(a.govt of india undertaking) chainsa – jhajjar pipeline project … · (a.govt of india...

GAIL (INDIA) LIMITED (A.GOVT OF INDIA UNDERTAKING)

CHAINSA – JHAJJAR PIPELINE PROJECT

BID DOCUMENT FOR

CATHODIC PROTECTION VOL II OF II – TECHNICAL

(BID DOCUMENT NO 11/0230/JPK/GAIL/13-R0)

DOMESTIC COMPETITIVE BIDDING

ISSUED DATE: 30.01.2009

ISSUED BY

GAIL (India) Limited

CHAINSA - JHAJJAR - BAMNOULI PIPELINE PROJECT

CLIENT JOB NO. 0230 TECHNICAL SPECIFICATION FOR

CATHODIC PROTECTION (CP) SYSTEM TOTAL SHEETS 45

DOCUMENT NO 11 0230 01 10 02 004

B 29/01/09 ISSUED FOR TENDER MT PKS MM

A 30/07/08 ISSUED FOR CLIENTS COMMENTS MT PKS MM

REV DATE DESCRIPTION PREP CHK APPR

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TECHNICAL SPECIFICATION FOR

CATHODIC PROTECTION (CP) SYSTEM

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TABLE OF CONTENTS

1.0 INTRODUCTION..........................................................................................................................4

2.0 CODES AND STANDARDS........................................................................................................5

3.0 PIPELINE DETAILS ....................................................................................................................6

4.0 CORROSION SURVEY DATA ....................................................................................................7

5.0 CATHODIC PROTECTION DESIGN PARAMETERS ..............................................................10

6.0 CATHODIC PROTECTION DESIGN CRITERIA.......................................................................11

7.0 SYSTEM DETAILS ....................................................................................................................12

8.0 ANODE GROUND BEDS ..........................................................................................................14

9.0 ANODES....................................................................................................................................15

10.0 AC INPU DC OUTPUT AUTO/MANUAL TRANSFORMER RECTIFIER UNIT [TRU].............19

11.0 REFERENCE ELECTRODE [CUCUSO4] PERMANENT TYPE ..............................................27

12.0 TEST STATIONS [TLP].............................................................................................................27

13.0 SURGE DIVERTER, GROUNDING CELL AND POLARISATION CELL.................................28

14.0 CP AT CASED CROSSING.......................................................................................................29

15.0 POLARIZATION ER PROBES/COUPONS...............................................................................30

16.0 PAINTING:.................................................................................................................................30

17.0 CABLES.....................................................................................................................................30

18.0 INSTALLATION.........................................................................................................................30

19.0 CIVIL WORKS ...........................................................................................................................31

20.0 TESTING AND INSPECTION AT WORKS ...............................................................................31

21.0 PACKING AND TRANSPORT ..................................................................................................32

22.0 SYSTEM TESTING, COMMISSIONING AND INTERFERENCE MITIGATION .......................32

23.0 SYSTEM MONITORING............................................................................................................34

24.0 DRAWINGS AND DOCUMENTS ..............................................................................................34

25.0 INSTRUMENTS, TOOLS AND SPARES ..................................................................................35

26.0 INFORMATION REQUIRED WITH THE BID ............................................................................35

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27.0 APPROVED MAKE OF EQUIPMENT / COMPONENTS FOR C.P. SYSTEM .........................36

APPENDIX – A..........................................................................................................................................38

APPENDIX-B ............................................................................................................................................39

APPENDIX-C ............................................................................................................................................41

ANNEXURE – 1: Soil Resistivity. ANNEXURE – 2: Details of Crossings. ANNEXURE – 3: Process Flow Diagram ANNEXURE – 4: Drawings:

S. No. Description Drawing Number Rev.

1) Impressed Current Cathodic Protection Schematic. 11-0230-00-10-01-001 0

2) Fabrication & Installation details of Pipeline. 11-0230-00-10-01-002 0

3) Fabrication & Installation details of Cable Laying (Typical). 11-0230-00-10-01-003 0

4) Fabrication & Installation–Deep Anode Ground Bed details. 11-0230-00-10-01-004 0

5) Test Lead Points and Junction Box with Foundation details. 11-0230-00-10-01-005 0

6) Test Station Connection Scheme – Typical Details. 11-0230-00-10-01-006 0

7) Fabrication & Installation of Thermit Welding Cable to Pipe Joint. 11-0230-00-10-01-007 0

8) Fabrication & Installation – Details of Cable Route Marker. 11-0230-00-10-01-008 0

9) Temporary Cathodic Protection Schematic. 11-0230-00-10-01-009 0

10) Typical Cathodic Protection Scheme for CASED Crossing. 11-0230-00-10-01-010 0

11) Installation Details of LIDA SINGLE ANODES. 11-0230-00-10-01-011 0

12) Pipeline Overall Schematic Diagram.

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1.0 INTRODUCTION

GAIL (INDIA) LTD. are laying an underground mild steel [API 5LX 70] pipeline (36” Dia) Chainsa to Jhajjar (85.822 Kms) Having a spur line (16” Dia) from RTU-3 a Bamnoli (Chainage 70.5 Kms.) to RTU-5 receiver station at PPCL Power station18.06 Kms for transporting re-gasified liquefied natural gas [LNG] to serve and meet the customer needs at various locations. The external surface of the cross country Chainsa Jhajjar pipeline [ Hereafter Abbreviated as CJPL] is provided three layer polyethylene [HDPE] coating, yard coated on mainline pipe and heat shrink sleeve HTLP 80 at Girth welds. It is envisaged to protect the external surface of [CJPL] by Cathodic Protection [CP] System: Temporary CP System [TCP] using sacrificial [Mg or Zn] Anodes for an initial two (2) year construction period, followed by Impressed Current [ICCP] Cathodic Protection system [PCP] using [MMO] Anodes & external Power source [AC Input DC Output Transformer Rectifier nit [TRU] for a Design Life of thirty five (35) years. TRU to be installed at locations where A C Dedicated feeder is available.

1.1 This specification defines the requirements of site surveys for design data generation from [CJPL] ROW, CP design, detailed engineering, supply of materials, quality assurance (QA) and quality control (QC), installation, testing and pre-commissioning, Commissioning, Testing of temporary cathodic protection system [TCP] and permanent cathodic protection system [PCP]for protecting throughout the design life [2+35 years] the external surface of cross-country 3XLPE coated underground [CJPL] cross country (103 Kms) pipeline including detection of A.C & D.C. interference / interaction with neighbouring structures/utilities all along the pipeline ROW, as well as Installation of requisite Mitigative measures for the [A.C/D.C.] interaction / Interference mitigation. Also included in the scope of work are post-commissioning surveys, to be conducted one month after the Commissioning of [ICCP] system, such as Computerized Potential Logging [CPL] and Coating conductance measurements along the pipeline ROW, followed by Pearson, DCVG [for defect classification] at defect locations indicated by CPL & Pearson surveys.

This specification defines the basic guidelines to develop a suitable temporary cathodic protection [TCP]

system followed by permanent cathodic protection [PCP] system for the underground [CJPL] mild steel [API 5LX 70] pipeline [external surface coated with 3XLPE] required to be protected from ravages of soil side corrosion. All data required in this regard including site surveys to verify, prior to CP design, the data annexed shall be taken into consideration by the CP contractor to develop an acceptable state of the art [TCP],[PCP] design and for appropriate engineering of the [TCP],[PCP] systems for GAIL [CJPL].

1.2 Compliance with these specifications and/or approval of any of the contractor’s documents shall in no

case relieve the contractor of his contractual obligations of providing adequate cathodic protection [TCP], [PCP] system suitable for desired number of service [2+35] years free of interference.

1.3 Activities of [ICCP] permanent cathodic protection [PCP] system which are common to temporary [TCP]

system shall be completed as part of temporary [TCP] system. The facilities installed for [TCP], if useful & required in [PCP] system (such as TLP, Reference electrodes, Corrosion coupons, Pin Brazing etc.) shall be utilized for [PCP] also & hence are to be designed as per [PCP] requirements.

1.4 All works to be performed and supplies to be effected as part of this contract shall require specific

approval of owner or his authorised representative. Major activities requiring approval shall include, but not be limited to, the following:

a) Methodology of Corrosion survey for site data generation, verification and interpretation

report and design basis for [TCP],[PCP] system. b) CP System design package including formulae used for calculations, design calculations, BOQ,

Technical Specifications and Post Commissioning Monitoring Methodology, Data Recording Formats, Frequency.

c) Quality Assurance/Control [QA/QC] methodology.

d) Methodology for Erection, Field testing and commissioning.

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e) Methodology for A.C and D.C. interference testing, detection and mitigation.

f) Procedure for Post Commissioning surveys.

g) As-Built Documentation.

h) O&M Manual and Monitoring Methodology, Frequency and Formats.

1.5 The Intending Bidder shall be deemed to have visited the Site Chainsa to Jhajjar [CJPL] pipeline ROW and Familiarized before Submitting the tender. Non familiarity with site conditions will not be accepted as a reason either for extra claims or for not carrying out the work in total conformity with these tender specifications.

1.6 The main pipeline laying contract will be divided into more than one spreads. The CP contractor will

have to accordingly mobilize simultaneously at all spreads concurrently, deploy adequate Manpower, Tools & Tackles, Construction & Testing Equipments requisite for smooth work progress so that CP work could also be completed within Schedule specified for the project. The CP contractor shall work in close coordination with the main pipeline contractor.

1.7 The installed [TCP] system to be monitored once a month and Monitoring Report submitted to Owner for Review and Approval.After installation & commissioning of [PCP] system the installed [ICCP] system to be Monitored by CP contractor,once a month,for a period of one (1) year from date of [PCP] commissioning and Report to be submitted to Owner for Review and Approval.

2.0 CODES AND STANDARDS

The system design, performance and materials to be supplied shall unless otherwise specified, conform to the requirements of latest relevant applicable standards: • BIS Standards

• BS Standards and codes of practice

• ANSI Standards

• BS Standards and codes of practice

• ANSI Standards

• NFPA Standards

• NACE Standards and Recommended practices

• IEC Standards

• DNV Standards

• IEEE Standards

• DIN Standards

• ASTM Standards

• OISD Standards & CCE Norms

• API Model code of safe practices

• GAIL Safety Standards

• All statutory, state, local requirements and norms

All latest available editions only.

In case of conflicting requirements amongst any of the above standards, the publication having most stringent requirement shall be governing. However, the priority in such instance shall be as follows:

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Statutory Regulations and norms

This Specification

Codes & Standards

3.0 PIPELINE DETAILS

Chainsa Jhajjar Gas Pipeline [CJPL]

Pipeline Material Carbon Steel API 5LX 70 PSL-2 Diameter Length Thickness Inch Metre mm 36”: : 30210 M 14.3 mm 36”: : 54399 M 15.9 mm 36”: : 2558 M 19.1 mm 36”: : 120 M 19.1 mm 16”: : 13015 M 6.4 mm 16” : 5429 M 8.7 mm 16” : 48 M 8.7 mm 16” : 48 M 11.1 mm Pipeline Coating 3XLPE [3.5 mm thick] Girth Welds Normal HTLP 80 (RAYCHEM) or Approved Equivalent HDD DIRAX (RAYCHEM) or Approved Equivalent High

Abrasive Resistant Heat Shrink Sleeve. + One (1) Tap-Off Total Number of SV Stations Four (4) + One (1) Tap-Off Total Number of Insulation Joints [Mono-Blocks] 36” 02 24” 01 18” 04 16” 02 Total 09

Casing Pipe Material of Construction Mild Steel IS 3589 42” 14.3 mm 24” 07.9 mm 06” 06.4 mm

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The Pipeline Overall Schematic Diagram PFD [Drawing Number: 11-0230-00-03-001 Rev.3] and Crossing Details, Soil Resistivity along ROW are Annexed herewith.

4.0 CORROSION SURVEY DATA

Corrosion Survey Data collected already from site [pipeline ROW] viz: Soil Resistivity, Soil Chemical analysis for chemical and microbial loading is enclosed: i Soil Resistivity along pipeline ROW - As per Annexure. However, verification of its veracity and Adequacy, prior to CP Design, shall be the entire responsibility of the CP contractor. In addition the CP contractor shall have to generate/collect additional Data from site such as:

4.1 The CP contractor shall carry out a site survey along pipeline ROW and at proposed Anode bed locations, in order to verify as well as generate requisite design data, prior to the final design of the [TCP], [PCP] system. The site survey shall generally include the following:

4.1.1 General information [Topographic] of terrain along which the pipeline is to be routed. 4.1.2. Anode bed locations proposed: Measurement of soil resistivity [ρ] along ROW and at Anode bed locations/plots. Each selected Anode

bed plot shall be sub-divided into sub-plots. Size of the sub-plots shall depend upon investigation of soil resistivity up to requisite depth. Each of these sub-plots shall be investigated individually. Sufficient observations at each of these plots shall be recoded as recommended by the Owner’s representative. This to obtain sufficient information about sub-soil stratification and water table depth wherever possible. The number of sub-plots shall be decided at site by Owner’s representative.Number, location, demarcation and size of sub-plots shall be individually decided for each ground bed plot location. One or more plots may be selected and surveyed at each CP station to finalize suitable ground bed location. For shallow Anode beds Soil Resistivity to be measured at depths 1,3,5,7 M and upto/beyond proposed Anode bed length. But at deep well Anode bed locations Soil Resistivity to be measured at 1,3,5,7,10,15,20,25,30,35,40,45,50……M depths depending on depth of deep well anode bed proposed.

4.2 Soil / water analysis for Chemical & Microbial loading from Anode bed plots from requisite depths such

as 1,3,5,7 M for shallow Anode beds and further at 15,20,25,30,35,40,45,50…M Depths for deep well Anode beds.

S.No. Sample from

Location Kms. 0

0 5 5

1 Depth in M 1 3 1 3 2 pH 3 RedoxPotential V 4 Total Dissolved

Solids ppm

5 Chloride ppm 6 Sulphate ppm 7 Sulphide ppm 8 Carbonate ppm 9 Bi-Carbonate ppm 10 Nitrate ppm 11 Nitrite ppm 12 Phosphate ppm 13 Sodium ppm

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14 Potassium ppm 15 Calcium ppm 16 Magnesium ppm 17 Sulphate Reducing

Bacteria [SRB] Counts

4.3 Survey for investigating possible sources of stray currents DC and AC Interference so that requisite

mitigative measures are included in the CP design. The CP contractor to avail the services of either of specified overseas expert agencies such as ( VAN DER VELDE, PENSPEN, PLE GMBH or any other Approved by Owner) carrying out CP Interference survey due to DC,AC [Overhead Hotline] by calling their expert to site so that after the site visit he could write Interference detection methodology to be followed by the CP contractor and Data so generated at/from site could be forwarded to the overseas agency for analysis and Recommending suitable and Appropriate Mitigative measures in presence of GAIL representative at Overseas agency headquarters for enabling GAIL representative to get needful done during O&M.

4.4 CP contractor,for the purpose of Resistance Bonding, will have to get necessary permissions from other

underground utilities such as underground pipelines of ONGC, IOCL, HPCL, GAIL, City Gas, etc., aboveground water pipeline running parallel on concrete pedestal, and DC rail traction etc. so that composite studies for interference detection are done and recommended mitigative measures are installed. At the time of handing over the interference free system to owners (GAIL), the contractor will hand over these permissions of other utility owners, for further needful by GAIL.

4.5. AC DC INTERFERENCE

Where a CP system is designed for installation on a structure which is in vicinity of one or more foreign structures the design shall include features to minimize possible interaction.Survey for investigating possible sources of stray currents to be carried out prior to design so that requisite mitigative measures are included in the CP design.

4.5.1.The C P Contractor to retain services of an overseas expert agency such as ( VAN DER VELDE, PENSPEN, PLE GMBH or any other Approved by GAIL/JPK) for devising survey and data collection methodology [after survey due to AC overhead lines and DC current due to Rail Traction,Other utilities and switch yards or welding yards.The Data collected as per this Approved methodology may include overhead powerline Voltage rating, minimum/maximum separation of parallelism, length of parallelism, number and angle of overhead powerline/pipeline/electrified railway crossings, soil resistivity, coating conductance, type of AC powerline support pole,GPS co-ordinates of all H.T.towers and any other factors as may be applicable on a case by case basis, will be sent to overseas agency headquarters where a GAIL representative will join the overseas agency experts to use special software for predicting likely hazardous voltages for AC induction and DC interference.Thereafter,on the basis of this computerized treatment of site data Recommend requisite Interference Mitigative measures so as to achieve AC within limits set out in [NACE RP 0177 2004 Standard].DC voltages to be within specified bracket (-)0.95V Minimum and (-)1.5V Maximum (both “On” potential) w.r.t.Copper Copper Sulphate reference electrode.This specification clearly stipulates that greater than 20mV DC potential will be deemed as un-acceptable Interference and will need Mitigation.

4.5.2. The above Recommendations will be implemented by C P contractor and after successful installation of these Mitigative measures the AC and DC Interference will again be measured/surveyed and if found still in un-acceptable limits or fluctuating a continuous computerized data logging will be done for 24 hours or more at these locations, the overseas experts will have to visit site again to evaluate the reasons of this un-acceptable levels of A C &/or DC interference despite of implementation of earlier recommendations and suggest further requisite mitigative measures required to achieve [P-S-P] within specified limits and Hazard free (to OPS personnel) pipeline.

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4.5.3. At the time of handing over the installed [ICCP] system to GAIL the pipeline need to be free of interference.

4.5.4. Post Commissioning of [ICCP] Interference detection and mitigation will be requisite and only after achieving full interference mitigation post commissioning surveys shall be carried out.

4.5.5. Survey for knowing the location of existing Cathodic Protection system to maintain appropriate clearance between the existing and upcoming C P Systems. CP contractor, prior to CP Design for [CJ PL], shall carry out extensive site surveys and data collection, from pipeline ROW and proposed Anode bed locations [more than one (1) plots for each Anode bed] upto appropriate depth, such as Soil Resistivity upto requisite depth from ROW, and on a grid at each Anode bed plot & ionic & Microbial loading of Soil & Water samples collected from ROW & Anode bed plots and Likely interfering elements along ROW, survey for sources of stray currents likely to cause interference, and shall base the CP System Design on this Data collected from site.

This data to be used for calculating soil/water corrossivity based on which and clause 5.1 of this specification, the protective current density and anode material (weight) is to be decided.

4.5.6. Ground Water Table Data to be collected by CP contractor either from GSI [Geological Survey Of India] or measured at site from existing wells etc. to ensure Anode bed location preferentially in appropriate perennially moist environment round the year throughout service life.

In addition contractor shall have to collect/ generate additional Data as required for completeness of the job as follows:

4.6. ADDITIONAL SITE DATA TO BE COLLECTED

The following data shall be collected to generate design data for evaluation of interaction/ interference possibilities due to presence of other services in ROW/ in close vicinity:

i. Route, type, material of construction of foreign service/pipeline utilities in and around or crossing the right of way (including those existing and those which are likely to come up during this contract execution or any abandoned underground pipelines/utilities).

ii. Grade, Diameter, wall thickness, pressure, pipeline coating against corrosion, soil cover used in

case of pipelines and methods of jointing [weld, flanged etc.].

iii. Details of the existing pipeline cathodic protection systems protecting the services i.e. location, rating, type of protection, anode beds, test station locations and their connection schemes.

iv. Graphical representation of existing structure/pipe-to-soil potential [P-S-P] records, T/R unit current/

voltage input/output ratings, present current/Potential Input/Output Data etc for the existing pipelines.

v. Remedial measures existing on foreign pipeline/ services to prevent interaction.

vi. Possibility of integration/ isolation of existing CP systems, which may involve negotiations with owners of other existing pipeline services.

vii. Crossing and parallel running of electrified and non-electrified traction (along with information

regarding operating voltage, type AC/DC etc.) as well as abandoned tracks near ROW having electrical continuity with the tracks in use.

viii. Crossing or parallel running of any HT AC/DC overhead line (existing/proposed) along with details of

distance from pipeline, voltage, type AC/DC, distance from pipeline of earthing of towers etc.

ix. Voltage rating, number of cores and sheathing details of underground power cables, along ROW or in its vicinity.

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x. Information on existing and proposed DC/AC power sources and system having earth as return path,

in the vicinity of the entire pipeline route such as HV DC sub stations, fabrication yards with electric welding etc.

xi. Any other relevant information that may be needed in designing and implementing proper protection

scheme for the proposed [CJPL] pipeline.

Unless otherwise mentioned, CP contractor shall conduct necessary potential gradient survey for any existing anode ground bed that may interfere with the CP system of the pipeline covered under this [CJPL] project.

5. REPORT

On completion of all field work a composite CP design report incorporating all the results generated from site surveys for data generation and details of additional data collected as above shall be furnished to owner for Approval. The report shall also contain detailed interpretation of survey results and resistivity data enclosed, probable interference prone areas etc. to form design basis for the scheme of cathodic protection [TCP] & [PCP] system. This report shall also include various drawings prepared in connection with the above work. The soil resistivity values shall be plotted on semi-log graph sheets and in Histograms. Log mean resistivity values to be calculated and used for the Design of CP system. The Cathodic Protection Design of [TCP] and [PCP] systems should be part of this composite Report. The Bill of Materials [B.O.M.], Technical Specifications, Vendor list QA/QC methodology, Erection methodology, Work schedule etc. will be included in this Report for Approval of Owner. All The Construction Drawings for Owners Approval shall be part of this composite report. COMPLIANCE The CP Design Report to include an explicit statement for Total Compliance with Technical Specifications for this Project and Deviation, if any, is brought out clearly giving justification/reasons for the deviation sought. This (deviation) needs owner Approval.

5.0 CATHODIC PROTECTION DESIGN PARAMETERS

Unless expressly varied and otherwise specified in the project specifications, following parameters shall be used for design of temporary cathodic protection [TCP] system and permanent [ICCP] cathodic protection [PCP] system. Those parts of sacrificial anode cathodic protection [TCP] system which will be integrated with permanent CP system [PCP] such as Reference Cu-CuSO4 electrodes, Test Lead Points, Junction Boxes, Pin Brazing connections, Epoxy encapsulation, Markers, Polarization coupons etc. shall be designed based on permanent CP parameters.

5.1 PROTECTION CURRENT DENSITY

Pipelines having polyethylene coating.

Pipeline surrounding Protection Current density * Temporary CP (µA/m2) Permanent CP (µ A/m2)

Normal soil 25 25 Marshy area/ buried in sea water

35 35

High resistivity area (more than 100 Ώm)

20 20

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However, the Protective Current Density to be chosen at site as per Environmental conditions obtained as per Detailed Chemical & Microbial Analysis and presence or absence of interfering elements in close vicinity of [CJPL] pipeline ROW. Pipe to soil potential shall not be more negative than (-) 1.5V (“ON”) or (-) 1.18V (“Off”) w.r.t. Cu-CuSO4 Reference electrode. *Actual current density to be adopted shall be decided based upon soil/water corrossivity and other environmental conditions, proximity of foreign pipelines/Interfering elements and structures resulting in interference. Where considered necessary for satisfactory protection of pipeline the current density shall be suitably increased or decreased by contractor with appropriate justifications subject to Owner Approval.

5.2 Other parameters for design Other parameters to be considered for [TCP] and [PCP] design: 5.1.1 Safety factor for current density : 1.3 5.1.2 Anode utilization factor : 0.85 for centre connected Anode : 0.5 for Ribbon Anode 5.1.3 Pipeline natural potential (-) 0.45V [as measured from existing /upcoming structure in the same soil

matrix]. 5.1.4 Unless otherwise specified in project specification the design life of [TCP] temporary CP shall be Two (2)

year and that of [PCP] permanent CP shall be 35 years. 5.1.5 Along the ROW where soil resistivity is higher than 100 Ώ m temporary CP for the pipeline may not be

necessary unless otherwise specified in project documents and Approved by Owner. 5.1.6 Steel Resistivity 2.2 X 10-7Ω M 5.1.7 Maximum Loop Resistance 1 Ω 6.0 CATHODIC PROTECTION DESIGN CRITERIA

Cathodic protection system shall be designed to meet the following criteria. Temporary Cathodic Protection [TCP]

6.1 The pipe to soil potential [PSP] measurements shall be between –0.95V (“On”) and –1.5V (“On”) both “On” Potentials w.r.t. Cu-CuSO4 reference electrode. At the location of Polarization coupons, the coupon to soil potential measurement shall be between (-) 0.95 (“Off”) minimum and (-) 1.18 V(“Off) maximum w.r.t. CuCuSO4 reference electrodes, both being “Off” potential.

6.2 In rare circumstances a minimum polarisation shift of (-) 100 millivolts w.r.t. Cu-CuSO4 reference

electrode shall indicate adequate levels of cathodic protection for the pipeline subject to Owner’s Approval.

Discretion to use any of the criteria, listed above, shall solely rest with the Owner/ Owner’s representative.

6.3 A positive potential swing of ›20 mV [P-S-P] shall be considered as the criteria for presence of an

interaction situation requiring investigation and incorporation of suitable mitigation measures by the C P Contractor.

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PERMANENT CATHODIC PROTECTION [P C P]

6.4 The pipe to soil potential measurements [PSP] shall be between (–) 0.95V (“Off”) minimum and (–) 1.18V (“Off”) maximum [both “Off” Potentials] w.r.t. Cu-CuSO4 reference electrode, the maximum remaining the same (-) 1.5V (“On”) w.r.t. Cu-CuSO4 reference electrode. At the location of Polarization coupons, the coupon to soil potential measurement shall be between (-) 0.95 (“Off”) minimum and (-) 1.18 V (”Off”) maximum w.r.t. CuCuSO4 reference electrodes [both being “Off” potential].

6.5 In rare circumstances a minimum polarisation shift of (-) 100 millivolts w.r.t. Cu-CuSO4 reference

electrode shall indicate adequate levels of cathodic protection for the pipeline.

Discretion to use any of the criteria, listed above, shall solely rest with the Owner/ Owner’s representative.

6.6 A positive potential swing of ›20 mV [P-S-P] shall be considered as the criteria for presence of an interaction situation requiring investigation and incorporation of suitable mitigation measures by the C P Contractor.

7.0 SYSTEM DETAILS 8.1 Temporary Cathodic Protection [TCP]

The [TCP] system unless specified otherwise, may include the following major equipment/ sub-systems.

Sacrificial anodes [Zn or Mg] ground beds in carbonaceous back-fill Test stations [Type A,B,C,D,E or a combination of these]

Junction Boxes with shunts and resistors

Permanent Reference Cu-CuSO4 Electrodes

Pin Brazing Cable to Pipe connection, epoxy encapsulated

Surge diverter/ Grounding cell at Insulation Mono - blocks

Polarization cells at A.C. Interference locations

Earthing of Motor Operated Valve and other Electrical equipments without disturbing CP

System, using sacrificial anodes Polarization Coupons

Interconnecting cables

Markers

CP System at Cased Crossings

8.2 PERMANENT CATHODIC PROTECTION [ P C P ]

The [PCP] system may include the following major equipment/ sub-systems unless otherwise specified.

Digital Power Source AC Input DC Output TRU with built-in Current interrupter and GPS based timer.

Distribution Board

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MMO anodes and anode ground beds in carbonaceous back-fill Test stations [TLP]

Computerized Test Stations [CTSU]

Junction Boxes with shunts and resistors

Permanent Reference Cu-CuSO4 Electrodes

Pin Brazing for pipe to cable connection [ epoxy encapsulated ]

Surge diverter/ Grounding cell across Insulation Mono - blocks

Polarization cells at A.C. Interference locations

Polarization Coupons

Interconnecting cables

Markers [for cable route, Anode bed etc.]

Insulating fittings

8.3 Site Conditions

The equipment will be designed for the following site conditions:

Min/Max. Temperature 00 C to 550 C Design Temperature 600 C Relative Humidity 90% Height above MSL < 1,000 M Atmospheric Pollution To withstand the site conditions, dust, vapour Hazardous area classification for plant Zone 2,Gas Group IIA,IIB Temp. Class T3 Control Room/Electrical Room/ D.G.Room/Guard Room/Battery Room Safe Area

8.4 EQUIPMENTS

All equipment shall be new and supplied by CP contractor sourcing only from approved manufacturers of repute with proven track record and approved by the owner for the supply for this project. Equipment offered shall be field proven. Equipment requiring specialised maintenance or operation shall not be acceptable hence should be avoided, as far as possible, and prototype equipment shall not be accepted. Make and construction of all materials shall be subject to owner’s approval. The detailed specification of each system and equipment shall be furnished by the contractor. However, certain minimum requirements for the major equipment are highlighted in this document.

7.4.1 Equipment Location In Hazardous / Non Hazardous Area

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As far as possible equipment including Power source, test stations, anodes, junction boxes, etc. shall be located in safe area. However, all equipment located in hazardous areas shall be flame proof type as per BIS: 2148, IEC 79 for gas groups IIA & IIB and temp. Class T3 (2000 C).All equipment to be located in Hazardous area should conform to and comply with BIS 2148 and IEC 79 (or equivalent) code requirements. All indigenous flame proof equipment should be certified by CMRS. All flame proof equipment of indigenous origin should also be BIS marked.

8.0 ANODE GROUND BEDS 9.1 Temporary Cathodic Protection [TCP] 8.1.1 Zinc (Zn) anodes, in suitable back-fill, shall be provided Along ROW where soil resistivity predominantly

remains low and ranges from 0-10 Ώ m 8.1.2 Magnesium (Mg) anodes shall be provided Along ROW where soil resistivity is predominantly higher

than 10 Ώ m. 8.1.3 Magnesium (Mg) ribbon anodes shall be provided At high resistivity area where resistivity is of the order

of 50 Ώ m and above. 8.1.4 Anodes shall be installed along the pipeline at suitable intervals as per pipeline protection voltage

attenuation calculations and ground bed resistance/current output of anode installations. 8.1.5 Each electrically continuous section of pipeline shall preferably be protected totally by one type

(material) of anodes [either Zn or Mg] to avoid inter-anode [Zn ↔ Mg] circulation currents. Grounding cell should also conform to this specific requirement.

8.1.6 The anodes shall be installed at sufficient depth to reach perennially moist soil [ascertained by ground

water table data] but minimum 2M depth from grade level and shall be separated linearly from the pipe line by at least 5m and 2m for Magnesium (Mg) and Zinc (Zn) anodes respectively. The ribbon anodes should be laid at least 0.5 M away from pipe. The anode connections to pipe line shall be routed through test stations.

8.1.7 However, environment suitability [such as excessive carbonate, bi-carbonates, sulphates, chlorides,

nitrates etc. which could result in anode passivation] should be checked prior to lowering of sacrificial anodes suitability in the Anode beds.

8.1.8 At the temporary [TCP] anode ground bed, the leads of all the anodes shall be connected individually

through Shunt and Resistor [for controlling each anode output individually] in a junction box. 8.1.9 For sacrificial anode ground beds which shall be integrated with permanent CP system the leads of all

the anodes shall be brought up to the test station and shall be terminated individually with shunts inserted in between so that individual anode current output can be regulated & measured as required.

8.1.10 For Sacrificial anode CP system the Anodes shall be supplied with Tail cable [6 mm2 PE PVC copper

conductor single core multistrand cable] of sufficient length so as to reach Junction box, for termination, without difficulty. No joints are permissible on the cable run from anode tail to junction box.

8.1.11 The tail cable connection with the Iron Insert of Cable should be tightly done followed by Epoxy

encapsulation so as to ensure that no Necking takes place which could result in snapping of cable connection due to spark. Anode cap of heat shrinkable PE material should be able to ensure this.

8.1.12. The casing pipe shall be coated with 2 pack epoxy, 750 microns thick as approved by owner on both

sides (internal and external sides of the casing pipe).

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9.2 PERMANENT CATHODIC PROTECTION [P C P] 8.2.1 Anode beds To be installed at every CP Station and located at least 100 M away from pipeline ROW to

ensure adequate remoteness which should also be calculated. 8.2.2 All [MMO] Anodes to be placed in Petroleum coke breeze, in appropriate [shallow –horizontal or vertical,

or deep well configuration as per design to achieve requisite circuit resistance and protective Current output throughout the [35 years] service life.

8.2.3 The MMO anode should be supplied with sufficient length of 10 mm2 XLPE PVC cable so as to run upto

junction box for termination in the junction box without in between joints. No joints are permitted in cable run from Anode tail to junction box. This cable size is minimum only and wherever necessary for appropriate safe operation of the CP system higher sized cables should be provided.

8.2.4 Appropriate tamping of carbonaceous backfill [petroleum coke breeze] should be done so as to ensure

appropriate compaction around [MMO] anode. 8.2.5 Anode bed Plot: CP contractor shall make available [On Ownership basis to GAIL (India)] a plot of land

measuring 150 M X 5 M at least 100 M away from pipeline ROW for locating Anode bed, at each Anode bed location along the pipeline ROW and cable laying route upto Anode Junction box and TRU for 35 years service life. CP Contractor to indicate the location of Anode beds along pipeline ROW and handover the requisite ownership documents to GAIL at the time of Handing over of the system.

9.0 ANODES a) SACRIFICIAL ANODES 9.1 MAGNESIUM ANODE

The Magnesium [Mg] alloy anode shall be of low voltage (-) 1.5 V type packed in special back fill and suitable for use with three layer extruded polyethylene coating. The anode to conform to ASTM B 843 specifications such as the metallurgical composition, potential and consumption rate of anode shall be as below: i Composition:

Element Weight

Manganese 0.15 – 0.7% Copper 0.02% max. Silicon 0.10% max. Zinc 2.5 – 3.5%% max. Aluminium 5.3 – 6.7% max Iron 0.003% max Nickel 0.002% max Other metallic elements - Each 0.05% max. - Total 0.3% max. Magnesium (Mg) Balance

ii Anode open circuit potential (-)1.5 volts. W.r.t. CSE iii Anode consumption rate 7.9 kg / (A Yr) Max.

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9.2 ZINC [Zn] ANODE

The Zinc [Zn] alloy anode shall conform to ASTM B 418 standard. The anode (other than ribbon anode) shall be packaged with special back fill. The metallurgical composition of anode, potential and consumption rate shall be as below:

i.Composition: Element Weight Aluminium 0.3 – 0.5% max. Cadmium 0.075-0.1% max. Copper 0.005% max. Iron 0.002% max. Silicon 0.005% max. Lead 0.005% max.

Zinc Remainder

ii. Anode open circuit potential (-) 1.1 volts w.r.t. CSE iii. Anode consumption rate 11.24 kg / (A yr) Max.

9.3 Contractor shall furnish spectrographic analysis from each heat both for Zinc (Zn) and Magnesium (Mg)

anodes along with electrochemical test results .CP Contractor shall mention specifically the method of Spectrography (Atomic Absorption/Emission Spectrometry/Photometrics) for Owner’s Approval.

9.4 SPECIAL BACKFILL FOR SACRIFICIAL ANODES

The composition of special backfill for sacrificial anodes shall be as below:

Gypsum 75% Bentonite 20%

Sodium sulphate 5%

9.5 Some Specific Requirements for sacrificial anodes are as follows:

The anodes shall be provided with cable tail of sufficient length to reach junction box/test station [TLP] as applicable in single run without tension and without in between joints.

9.5.1 TOLERANCE IN FABRICATION OF SACRIFICIAL ANODES

Visual Inspection shall be carried out on all the Anodes regarding surface finish, excessive shrinkage, cracks, cable joint to anode core etc.

The anode surface shall be free from cracks (which may reduce the performance of the anode.).

Any cracks which follow the longitudinal direction of elongated anodes shall not be acceptable.

Small cracks in the transverse direction of elongated anodes and in anodes of other shapes may be accepted provided the cracks would not cause any mechanical failure during service of the anode considering that the combination of cracks and lack of bond to the anode core is detrimental.

For transverse cracks the acceptable limits shall be furnished by the bidders along with the offer.

The anode shall be free from excessive shrinkages. The following limits shall be used.

o Maximum 10% of the depth of anode or 50% of the depth of the anode core whichever is less. The

depression may be measured from the edges of one side.

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The surface of the anodes shall be free from coatings and slag/ dross, inclusions etc.

The maximum deviation from straightness shall not exceed 2%.

The weight tolerance on individual anodes may be taken as ± 5%. The total weight of the anodes shall not have negative tolerance.

Recommended dimensional tolerance shall be as follows:

Length ± 2.5% Width/ thickness ± 5%

One Anode per heat shall be radiographed to evaluate slags, voids, inclusion etc.

At least 10% number of Anodes from each heat to be checked for conformity to Dimensions & Weight.

One Anode, at least shall be Tested Destructively to check bond between Anode material and steel insert, slag, inclusion etc. Failure of one anode during the test shall make the entire anode lot liable for rejection.

FOR PERMANENT CATHODIC PROTECTION [P C P]

9.6 Mixed Metal Oxide [MMO] Anodes: LIDA SINGLE

The Permanent Cathodic Protection [PCP] system will have Mixed Metal Oxide [MMO] Strip Anodes also known as LIDA [Linear Distributed] Anodes and LIDA single. The [MMO] LIDA single anodes shall be centre connected sealed tubular type. These Anodes shall be of Noble metals [group VIII] Mixed Metal Oxide coated Titanium [having Ti substrate composition conforming to ASTM B 338 Grade I and/or Grade II]. The LIDA [MMO] anodes shall be dimensionally stable. The characteristics of the [MMO] LIDA singe anodes are as follows:

• Shape and Dimension 1,000 mm ± 5 mm long 25 mm ± 0.2 mm wide

3 mm ± 0.1 mm thick

• Weight 0.27 Kgs ± 0.020 Kgs. Recommended Maximum

OPERATING CURRENT DENSITY

• With Carbonaceous Backfill 75 Amp / M2 • Current Output with Carbonaceous Backfill 3 Amp /M2

• Electrical Resistivity 6 x 10-5 Ω cms. • Type of Joint Epoxy Splicing • Contact Resistance of Anode to Cable joint 9 x 10-5 Ω maximum • MMO Coating thickness ≥ 6 gms/M2 • Anode Consumption Rate 1 mg/Amp. Yr. • Type of Cable XLPE PVC 10 mm2

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• Length of Cable As Required so as to reach JB

• Design Life 40 Years • The Anodes shall be provided with sheet steel canisters and petroleum coke breeze • The Anodes to be Installed at a distance of 5m (Minimum) apart and shall be electrically remote to

the pipeline [to be ascertained by calculations]. Normally the nearest part of anode for shallow horizontal/vertical type of Anode beds shall not be less than 100M from the pipeline. However, the actual distance will be as per site conditions. For Deep well Anode bed the first anode should be at least more than 15 M deep [as per NACE RP 0572 Standard] and the actual depth shall be as per Approved Design. However, for Deep well Anode bed instead of LIDA Single [MMO] anodes LIDA String Anodes shall be used.

• Anode LIDA [MMO] Single to cable [XLPE PVC 10 mm2] jointing and insulation shall be done by

anode manufacturer at his shop. • Dimension & weight of all anodes to be checked & recorded. Negative tolerance will not be

acceptable. • Routine & type test certificates of cable manufacturer to be furnished for anode lead cable as per

IEC 502 – 1983 or relevant BIS code. Length and identification tag to be verified by measurement. • Each anode to cable joint shall be tested for its electrical contact resistance & its value in Ω shall be

recorded. • First anode to cable joint shall be subjected to accelerated ageing test & destructive test to

determine pullout strength of cable to anode joint as well as effectiveness of the joint insulation. • Manufacturer shall furnish detailed dimensioned fabrication drawing of anodes as well as details of

cable connection& its insulation sealing to owner for approval. Manufacturer of anode will commence only after this Approval from owner.

• Vendor shall furnish for Owner’s Approval the following information

type & make of Heat Shrink cap & it’s properties procedure for making the joint procedure for accelerated ageing test Vendor shall submit all test reports for Owners review.

9.7 Petroleum Coke Breeze

Lubricated calcined petroleum coke breeze backfill material for use with LIDA Single [MMO] Anodes in [PCP] system shall have a carbon content of 91.77% minimum and a bulk density of 74 pounds per cubic ft. Zero percent shall be retained by a screen size of 16 mesh. The coke breeze shall have low resistance carbon lubricant added for lowering the combined resistance while developing the pumping qualities. Earth contact resistance shall be 0.1 Ω cm at 150 PSI.

BACKFILL DATA SHEET Carbon 91.770% Volatiles 00.700% Ash 02.230% Sulphur 05.850% Silicon 00.060% Iron 00.020% Moisture 00.000%

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TYPICAL PARTICLE ANALYSIS Screen Size % Retained % Retained (Cumulative) 16 Mesh 00.000 000.00 28 Mesh 02.100 002.10 48 Mesh 21.100 023.20 100 Mesh 60.300 083.50 200 Mesh 15.000 099.50 200+Mesh 01.500 100.00 TYPICAL PHYSICAL ANALYSIS Bulk Density 54 lb/cu ft. Real Density 02 gm/ml Porosity 40.8%

The Petroleum Coke Breeze Material shall be tested for chemical composition, bulk density, real density, particle size and resistivity, sieve analysis.

10.0 AC INPU DC OUTPUT Auto/Manual Transformer Rectifier Unit [TRU]

The TRU shall be supplied in accordance with the following specifications and Data sheets:

10.1 GENERAL DESCRIPTION

This specification covers the requirements of design, manufacture, inspection, testing and supply of Automatic Controlled Transformer Rectifier Unit for Cathodic Protection of underground structures. Reliability of equipment and ease of maintenance is of utmost importance. The workmanship shall be of highest grade and entire design and construction in accordance with the best modern practice. The C.P. Units shall be capable of continuous trouble free operation at full load rating specified. The protection devices and control components shall be of standard design and carefully chosen to meet the requirements of the sets. All similar materials and parts of similar equipments shall be interchangeable with each other. Special care shall be exercised in the design and manufacture for aging effects, low input voltage, DC voltage fluctuations, high forward current through the rectifying elements and high temperature conditions during operation. Apart from the derating for site conditions an additional derating of 20% shall be considered for the specific use. The components of the units shall be designed for maximum operating efficiency. The C.P. Units shall be provided with all the necessary protections required as detailed in the following pages. The C.P. Units shall have Automatic/Manual control and shall be metal clad, compact, indoor installation type, air natural cooled, dust and vermin proof systems exactly confirming to the following specifications and no deviations shall be allowed.

10.2 TECHNICAL REQUIREMENT 10.2.1 The CP Transformer Rectifier Units’ scheme for protection, monitoring, control, metering and indication

shall be designed to meet requirements of this specification. The control shall be achieved using thyristors and fully solid state logic only. The various features of the unit will be as per the details provided in the data sheet in this specification.

10.2.2 Transformer shall be of double wound, air cooled type with an electrostatic shield between the windings.

The transformer insulation shall be Class F. The winding size shall be based on maximum current density of 1.6 Amps/sq. mm of copper conductor.

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10.2.3 Rectifier shall be silicon type of approved make with adequate cooling arrangement and with moisture and humidity resistant finish. It shall be mounted on spindles or other suitable supports. It shall have configuration suitable for full wave rectification. Adequate filtering in the form of L-C filtering circuit shall be provided on output side to smoothen out the D.C. output to limit ripple content to less than 5% at rated output.

The input and output of rectifier shall be protected by fast acting fuses of suitable ratings. Lightning Arrestors/Surge Suppressors shall also be provided across D.C. output terminals and A.C. input terminals to protect the rectifier against surges. Each diode and SCR shall be provided with suitable surge suppressers.

10.3 OPERATION OF THE CP TRANSFORMER RECTIFIER UNIT

The T/R unit shall be provided with two modes of working as under. A mode selector switch shall be provided to select the desired mode of operation. Both the modes shall be independent of each other and failure of the unit in one mode shall not affect working of the unit in other mode. A brief description of these modes is given below. A) Auto Ref. Mode

The unit will be generally working in this mode. The operation of the unit in this mode shall be controlled by a reference signal. The output D.C. voltage of the unit in this mode shall vary right from 0V to rated voltage and form 0A to rated current to maintain the reference signal within ± 20 mV of the set value under all operating conditions. The response of the unit shall be instantaneous to suppress extremely fast acting external stray currents if present. The typical reference regulation in this mode shall be within ± 20 mV under all conditions. Fully solid state Automatic Reference Selector logic shall be provided to select the lowest of the Three Reference Inputs automatically. Facility shall also be provided for Manual selection of any one out of the three reference inputs for control. Suitable metering arrangement shall also be provided to monitor all the three external reference signals as well as the internal reference signals independently. In the event of failure of all the reference signals, the unit will provide alarm - “All Reference Fail" and the output of the unit shall get adjusted to a preset value, which will be operator adjustable from 0V to rated voltage. Independent ultra fast acting electronic current limit circuit shall be provided to limit the output current of the unit in Auto mode to any value from 0 A to rated value as desired by the operator. The current limit circuit will be capable of protecting the unit even under dead short circuit across output. The unit will be capable of sustaining dead short circuit across output indefinitely without degrading or damaging any internal components in this mode. B) Automatic Voltage-Current Control mode (AVCC mode)

This will be the second mode of operation. The working of this mode shall be totally independent of the Auto mode and failure of the unit in Auto mode shall not affect operation in this mode. The output voltage of the unit shall be adjustable to any value from 0V to rated voltage by means of a stepless voltage setter. The set voltage shall be maintained within ±0.25V of the set value for change in DC input voltage within specified limits and change in load from 0A to full load.

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The output current of the unit shall also be adjustable to any value from 0A to rated current by means of a stepless current setter. The current shall be regulated within ± 0.5A of the set value for change in DC input voltage within specified limits and change in load from zero to the rated value. The response of both current controller and voltage controller shall be ultra fast, instantaneous type. The current limit circuit will be capable of protecting the unit even under dead short circuit across output. The unit will be capable of sustaining dead short circuit across output indefinitely without degrading or damaging any internal components in this mode.

10.4 LOCAL & REMOTE MONITORING & CONTROL

The unit will be capable of working in Local Mode of control as well as Remote mode of control. For this purpose a mode selector switch will be provided on the unit. With this switch in ‘Local Mode’ it will be possible to control the various parameters of the unit by means of local controls located in the unit. With this switch in ‘Remote Mode’ it will be possible to control the various parameters of the unit remotely thru the RTU/SCADA system.

10.4.1 Local Monitoring & Local Control

Facility will be provided for monitoring and control of various parameters by means of controls provided on the front panel of the unit. The details of the parameters to be monitored and controlled locally are as under:

10.4.1.1 Local Monitoring

Facility will be provided for local monitoring of following:

A) Metering on Panel

1) AC Input Voltage - Digital Voltmeter 2) AC Input Current - Digital Ammeter 3) DC Output Voltage - Digital Voltmeter 4) DC Output current - Digital Ammeter 5) PSP (Set & Actual) - Digital Voltmeter with 10 Meg Impedance

B) LED Indications on Panel

1) AC Supply ON - LED indication 2) Pipeline Underprotection - LED indication 3) Pipeline Overprotection - LED indication 4) Reference 1 Lowest - LED indication 5) Reference 2 Lowest - LED indication 6) Reference 3 Lowest - LED indication 7) Reference 1 Fail - LED indication 8) Reference 2 Fail - LED indication 9) Reference 3 Fail - LED indication 10) All Reference Fail - LED indication 11) Overcurrent (Current Limit) - LED indication 12) Unit Working in Auto Mode - LED indication 13) Unit Working in AVCC Mode - LED indication 14) Unit Working in Local Mode - LED indication 15) Unit Working in Remote Mode - LED indication

10.4.1.2 Local Control

Facility will be provided for local control of following:

1) DC O/P Voltage - By means of potentiometer on panel 2) DC O/P Current - By means of potentiometer on panel

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3) PSP - By means of potentiometer on panel 4) Selection of Auto/AVCC Mode - By means of selector switch on panel 5) Start/Stop of Current Interrupter - By means of Keypad on Timer

10.4.2 Remote Monitoring & Remote Control

The T/R unit will be suitable for Remote Monitoring & Remote Control through the RTU/SCADA system. For this purpose Programmable Logic Control system (PLC) shall be provided in the TR unit. The PLC shall interface all the remote control and monitoring signals of the TR with RTU/SCADA. The PLC shall be of a reputed and proven brand like Allen Bradley, Siemens, GE, Schnider, and Mistubishi. PLC of any unknown and non-proven make will not be acceptable. The system shall comprise of Processor, I/O system, communication sub-system, power supply and serial link communications to RTU, including 10 meters of serial interface cables along with all necessary connectors at both ends for communication to RTU. The system shall include all accessories like isolators, relays, terminals, etc as per the specifications along with software and all other necessary hardware, etc required for proper operation of the PLC system. The design and the component used for the PLC system shall provide maximum reliability, maximum on-line performance and minimum maintenance. All items shall be field proven. No prototype item shall be supplied. The PLC shall not be damaged due to power failure. In case of power failure the PLC shall be able to retain the control settings prior to power failure and set accordingly on resumption of power. The system shall be modular in construction and expandable in future by adding additional modules, which shall be easily accessible for maintenance and repair. The types of modules shall be kept to minimum possible in order to have inter-changeability and low spares inventory. The PLC shall have very high noise immunity in order to ensure safe and reliable operation when subjected to electrical radio frequency interference and electro magnetic disturbances expected from other electrical/electronic equipment located near by and inside the TR unit panel. The communication subsystem shall be a digital communication bus that provides reliable and high speed data transfer between the processor subsystem, I/O subsystem, PLC display, or other devices connected to the system.

10.4.2.1 System Software

The vendor will supply the necessary system software such as all programs for the PLC, PLC display etc. which are required to perform all the PLC functions including communication and self-diagnostics. Logic program with necessary instructions shall be recorded on compact disc (CD) and shall be delivered with the system. The PLC system shall be rated for 24 V DC power supply voltage. The 24 V DC power supply shall be derived from 230V AC power supply for the TR unit, through a suitably rated 24 V DC Power supply module. The PLC and the DC for power supply module for the PLC shall be mounted inside the TR Unit panel.

10.4.2.2 Parameters for Remote Monitoring

Facility will be provided for remote monitoring of following: A) Analog Signals

1. DC Output Voltage - Hardwired 2. DC Output current - Hardwired 3. Lowest/Selected PSP - Hardwired

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B) Digital Status Signals

1) Pipeline Underprotection - Through PLC / RS 485 2) Pipeline Overprotection - Through PLC / RS 485 3) All Reference Fail - Through PLC / RS 485 4) Unit Working in Auto Mode - Through PLC / RS 485 5) Unit Working in AVCC Mode - Through PLC / RS 485 6) Unit Working in Local Mode - Through PLC / RS 485 7) Unit Working in Remote Mode - Through PLC / RS 485

10.4.2.3 Parameters for Remote Control

Facility will be provided for Remote control of following: 1) Setting of DC O/P Voltage - Through PLC / RS 485 2) Setting of DC O/P Current - Through PLC / RS 485 3) Setting of PSP - Through PLC / RS 485 4) Selection of Auto/AVCC Mode - Through PLC / RS 485 5) Start/Stop of Current Interrupter - Through hard wired potential free contact from

RTU/SCADA 10.5 Reliability and Factor of Safety

Due to very harsh conditions under which the units are going to operate, prime importance shall be given to ensure reliability and trouble-free operation. To take care of high transient voltages and high peak current demands adequate factor of safety shall be provided in choosing all the components. Minimum factor of safety to be provided for critical components is as under.

Components Factor of Safety All wound components : 50% additional capacity Thyristor & diodes : PIV : 1200V minimum Iav : At least 3 times actual max. average

current at full load. Passive components like switches, resistors

: 50% safety margin in current rating.

Overall system : The unit shall be capable of delivering 125% rated current output at rated voltage for 1 hour.

Electronic Control : The entire electronic circuitry shall be assembled on plug-in type glass epoxy PCBs. The control circuit shall be designed using the latest advanced ICs to minimize the component count. Status indicator LEDs shall be provided on each control card to indicate functioning of the card. All the control cards shall be completely sealed using protective coatings. The control circuit shall be capable of operating at elevated temperatures of upto 70 °C without any degradation in performance or life expectancy.

10.6 WORKING LIFE

The TR Unit shall be designed for a working life of minimum 35 years.

10.7 TECHNICAL SPECIFICATIONS AND DATA SHEET – TR Unit

A) A. C. Input Voltage : 230V + 20%, 1Ph, 50 Hz + 5%, AC B) A. C. Input Current : 8.0 A (max)

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C) D. C. Power Output : 625W D) D. C. Output Voltage : 0 to 25V DC E) D. C. Output Current : 0 to 25A DC F) Controls : 1. Auto PSP

2. AVCC (Manual) G) Full load efficiency of the TR unit : Not less than 70%

H) Power Factor at full load : Better than 0.8 Lag I) Insulation Level : 2 KV for 1 minute J) Cable entry : A.C. input, D.C. output, Ref. Cells and Alarm

cables. From the bottom plate of the unit, thru suitable cable glands.

K) Filtering circuit : L. C. Filter L) Ripple & Hum : Less than 5% at rated load M) Surge Diverters for

diodes/SCRs/Transistor : Metal oxide varistors / capacitors / R-C Networks

N) Lightning Arrestor : At both input & output side of the unit R.M.S. Voltage Rating : 500V R.M.S. Current Rating : 1.5KA Type : LT 0.5 or Eqv.

O) Protection : - 2 pole MCB in AC input for overload protection & Isolation. - 2 pole MCB in DC output. - HRC fuses in input & output. - Glass cartridge fuses in the live line of all lamps, auxiliary power lines to control circuit.

- Built in electronic current limit and short circuit protection feature. Current limit adjustable from 0 to rated value.

- All reference fail indication and automatic setting of O/P DC voltage to preset value.

P) Ref. Fail Safe Feature In the event of failure of all the Reference Electrodes the unit will provide “All Reference Fail” indication and the DC O/P voltage will get adjusted to a programmable preset value.

Q) Reference Electrode [Permanent]

: 3 Nos. Cu/CuSo4 Automatic Reference Selector Logic shall be provided to automatically select the lowest (least protected) reference signal out of three reference signals fed to the unit simultaneously. Facility shall also be provided to select one out of three ref. Electrodes by means of a Manually operated Reference Selector switch.

R) Control element : The DC output will be controlled using latest solid state SCRs. These SCRs will be controlled by the commands from the control circuits. All the electronic circuits will be assembled on plug-in type control cards.

S) Modes of operation : Following modes of control shall be provided. a) Auto Ref. Mode:

The operation of the unit in this mode will be fully Automatic and will be controlled by the Reference electrode feedback (PSP). The unit will automatically maintain Reference voltage or P.S.P. within ± 20mV of the set value under

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all conditions. b) AVCC Mode: This will be the second mode of operation. In

this mode the unit can be operated in either constant voltage or constant current mode.

The output voltage will be adjustable from 0 to rated value by means of stepless voltage setter potentiometer.

The output current will be adjustable from 0 to rated value by means of stepless current setter potentiometer.

T) Voltage Setting Range in AVCC Mode (Manual) Mode

: 0 to 25V

U) Current Limit setting Range : 0 to 25A V) P. S. P. setting Range : -0.4V to –2.5V

W) Ref. Regulation in Auto Mode : Better than ± 20mV X) DC Voltage regulation in AVCC

(Manual) Mode : Better than ± 0.25V

Y) Current Regulation in current limit mode

: Better than ± 0.5A

Z) Indications : a) Underprotection b) Overprotection c) Reference cell 1 Lowest d) Reference cell 2 Lowest e) AVCC mode of operation

AA) Annunciations : a) Underprotection b) Overprotection c) Reference cell 1 Lowest d) Reference cell 2 Lowest e) Reference cell 3 Lowest f) Reference cell 1 fail g) Reference cell 2 fail h) Reference cell 3 fail i) Reference cell All fail j) Overcurrent (Current Limit Mode)

AB) Meters/Instruments : Digital Meters as under: AC Input Voltage : 0 to 300V AC AC Input Current : 0 to 10A with CT 3-1/2 Digit Digital Meters as under: Output Voltage : 0 to 50V DC Output Current : 0 to 50A with shunt PSP & Set PSP : 0 to + 19.99 V DC

AC) Local control Mode : Following controls will be provided in local mode from local control panel.

1. Setting of Ref. PSP through Potentiometer 2. Setting of Output Voltage through

Potentiometer. 3. Setting of output current limit through

Potentiometer. 4. Auto/AVCC Mode Selection 5. START/STOP of Current Interrupter

AD) Remote Monitoring and control through PLC through RS 232C / RS 485 Serial Link

: Following features will be provided by means of PLC and RS232C / RS 485 Serial Link with MODBUS RTU Protocol.

Digital Input status to RTU/SCADA.

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1. Under Protection 2. Over protection 3. All Ref. Fail 4. TR unit in Auto mode 5. TR unit in AVCC mode 6. TR unit in Local mode 7. TR unit in Remote mode Digital control signal from RTU/SCADA

1. TR unit Operation in AUTO mode 2. TR unit Operation in AVCC mode Analog Input status to RTU/SCADA

1. Lowest/selected PSP value 2. Output DC voltage 3. Output DC current Analog Set points from RTU/SCADA

1. Setting of PSP 2. Setting of DC output voltage 3. Setting of DC output Current

AE) Current Interruption : Current interruption facility will be provided by means of a built-in contactor & microprocessor based fully programmable and GPS enabled Synchronisable digital timer with real time clock & ON/OFF time display. The timer will have facility for adjusting the ON time & OFF time from 0 to 999 sec. by means of front panel keypad. Timer will have START, STOP & RESET facility thru local keypad or thru remote potential free contacts. The Timer will have typical time accuracy of + 5 PPM

Facility for interconnection of an external timer shall also be provided. A removable bypass link will be provided for bypassing the interrupter contactor contacts.

AF) Enclosure/Construction : Floor mounted Indoor type. Fabricated from 1.5mm/2.0mm CRCA sheet. Confirming to IP42 degree of protection. Lockable doors shall be provided in the front and back.

AG) Cooling : Natural air cooled AH) Painting : Baked epoxy paint/Powder Coating of shade RAL

7032 Siemens grey with proper pre-treatment and primer application as per standard Industrial Practice.

AI) Earthing : 2 Nos. M6 earthing bolts and 1 no. nickel plated copper earth bus bar shall be provided.

AJ) Dimensions : L X B X H = 650mm X 600mm X 1700mm 10.8 MANUFACTURER'S TECHNICAL EXPERTISE & EXPERIENCE IN THE FIELD OF CATHODIC

PROTECTION RECTIFIERS

The manufacturer should be a reputed and established manufacturer of CP Rectifier Units and should have experience in manufacturing of C.P. rectifiers units of similar specifications. The manufacturer will have to submit a list of C.P. Rectifier installations having similar specifications executed in the past 5 years, giving present working status of various units.

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10.9 TESTING AND INSPECTION

The Manufacturer/Contractor shall provide all the necessary facilities to carry out full performance tests on the CP TR Units at his works.

10.10 GUARANTEE The manufacturer/Contractor will have to guarantee the successful working of the units for a period of 12 months from date of Installation & commissioning.

- All reference fail indication and automatic Setting of DC O/P voltage to preset value.

11.0 REFERENCE ELECTRODE [CuCuSO4] PERMANENT TYPE

Permanent Copper Copper sulphate reference electrodes three (3) numbers at each CP Station and one at middle of two consecutive CP Stations are to be installed for [P-S-P] Monitoring.

12.0 TEST STATIONS [TLP] 12.1 Test stations [TLP] shall be provided along the pipeline ROW for monitoring the performance of the

cathodic protection system at intervals not exceeding 1,500 meters unless otherwise specified. In addition to above, test stations of requisite type [A,B,C,D,E or Combination of any two of these Viz: DE] shall be provided at the following locations:

a) At both sides of major road crossings b) At all insulating joints c) At vulnerable locations with drastic changes in soil resistivity. d) At connections of surge diverters, grounding cells and polarisation cells. e) At HT AC/DC overhead line crossings and selected locations where HT overhead line is in the close vicinity of the pipeline. f) At railway line crossings and running parallel to the pipeline. g) At both sides of major river crossings. h) At high voltage cable crossings or along routes where HV cables are running in parallel. i) In the vicinity of DC net works or grounding system where interference problems are

suspected. j) At crossings/parallel running of other pipelines/ structures. k) At both sides of cased crossings.

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l) At any other locations considered vulnerable/locations where interference is expected. m) At any other locations considered necessary by owner/ owner’s representative.

Besides, every 10 Kms. Computerized Test station shall be installed for remote monitoring of the Protective Potential and Current profile.

12.2 Between the pipeline and foreign pipelines or structures that may exist in common ROW. Test stations for bonding shall be provided with shunt and resistor as a means to monitor and control current to ensure zero net flow of Current from one to the other.

12.3 Test stations used for sacrificial anodes shall have shunt for measurement of individual anode current,

and provision of resistance to limit & control the anode current output. 12.4 Test station with current measuring facility shall be provided at each intermediate CP station drainage

point ( to measure pipeline current on any one or both side of the pipeline from drainage point), at interference prone areas, on both sides of major river crossings and at least at two additional locations along the pipeline ROW between two CP stations.

12.5 All test stations shall have weather proof enclosure, having degree of protection IP55 with hinged lockable shutter. Enclosure shall be made of sheet steel of at least 3 mm thickness and shall be suitable for M.S. post mounting. The test stations shall be designed with terminals required for both temporary [TCP] and permanent CP system [PCP] and shall be suitable for total life of permanent CP system.

12.6 The test stations shall be installed with the front of the test station facing the pipeline. The name plate of

test stations shall in minimum carry following information. • Test station number • Chainage in km • Test station connection scheme type • Distance from pipeline in meters • Direction of product flow

12.7 Terminal blocks and different scheme of wiring as required shall be provided in the test station as per the

test station connection scheme sketch. 12.8 The location of all the test stations shall be marked with their connection schemes and other relevant

information on alignment sheets. A detailed test station schedule shall be prepared. 12.9 Computerized Test Stations [CTSUs] to be installed at pre identified [10] locations along pipeline ROW

for Monitoring the CP System adequacy from these locations. Readers three (3) numbers at least to be supplied with ten (10) CTSUs.

13.0 SURGE DIVERTER, GROUNDING CELL AND POLARISATION CELL 13.1 At the crossing or parallel run of pipeline and overhead HT line of 66 KV and above, the pipeline shall be

grounded through solid state polarisation cell/device. Alternatively, grounding could also be done with galvanic anodes [grounding cells] at the discretion of the owner. The grounding shall be done at regular intervals where transmission line run parallel within 25 m of the pipeline, to ground any surges in the pipeline potential that may appear in case of faults [phase to phase or phase to ground] in overhead transmission line.

13.2 Locations along pipeline where continuous induced over-voltage due to HT line etc. is expected &/or

observed during commissioning, the pipeline shall be earthed through solid state polarisation cell/device to the HT tower earth system causing the voltage induction to ground or through a separate earthing system. Alternatively the pipeline shall be grounded with galvanic anodes [Grounding cells] at the discretion of the owner.

13.3 The solid state polarisation cell/device shall be installed in a vandal proof steel housing by the

contractor.

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13.4 Spark gap surge diverter shall be connected across each insulating joint to protect it from high voltage surges.

Alternatively, Zinc or Magnesium grounding cell may be provided across insulating joints along ROW where the pipelines on both sides of the insulating joint are cathodically protected and difference of protection voltage is not more than 0.4 volts.

13.4.1 Surge diverter shall be provided for the protection of insulating joints located at the ends of the pipe

line/at terminals & in between. Alternatively owner on his own discretion may permit use of Magnesium (Mg)/Zinc (Zn) galvanic anodes [grounding cells] appropriately sized for protection of insulating joints. Choice between Zn & Mg anodes will depend up on the potential values on either side of the insulating joint locations. These anodes shall be sized for the specified design life of permanent cathodic protection system [PCP].

13.4.2 The total system including cable, cable termination, anodes/surge diverters shall be suitable for the

anticipated fault current magnitude at the location of its installation. 13.4.3 Unless otherwise specified the minimum rating of grounding cell, polarization cell and surge diverter

shall be as below:

i. Grounding Cell - Type : 2 or 4 plate type - Current rating : Suitable to pass more than 10 kA surge ii. Polarisation Cell - Type : Solid state device - Current rating : The rating shall be based on actual fault current expected at site. iii. Surge Diverter - Type : Spark gap - Current 8/20 µs) : 100 kA - Spark over AC voltage : - 50 Hz : 1 KV - Impulse (1.2/50 µs) : 2.2 KV

13.4.4 The grounding cell, surge diverter and the solid state polarisation cell/device system shall be sized for the design life of permanent CP system. The Zinc (Zn) or Magnesium (Mg) anodes meant for pipeline grounding shall also be sized for the life of the permanent CP system and the surge magnitude taking into account the current discharge from the anodes. The grounding system shall have minimum resistance to earth to restrict the pipeline voltage [PSP] as per NACE protection criteria.

14.0 CP AT CASED CROSSING

At all cased crossings the casing shall be coated using 2 pack epoxy,750 micros thick, both on internal and external surface of the casing. The casing shall be protected additionally by independent [from carrier pipe protection system] sacrificial anode installations for design life [2+35] years. The sacrificial anode installations shall be provided at both ends of casing. The anode installation shall be sized based on the permanent CP design parameters specified for the main pipeline.

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The carrier pipe inside casing shall be protected by Zn or Mg ribbon anodes well connected to the outer surface of bottom of carrier pipe extending between hour hand positions of 4 and 8 o’ clock. The anodes shall be placed at close intervals as per design calculations and sized based on the permanent CP design parameters. Casings upto 20 mts in length may not be provided additional cathodic protection to carrier pipe bottom inside casing. More than 20 mts length casing additional cathodic protection to carrier pipe bottom shall be provided. The annulus between the casing and the carrier pipe shall be filled with graded sand/ bentonite. The HDD contractor will arrange an agency to check the coating condition of the casing pipe post erection of HDD so that requisite repairs(if required) are done to the damaged coat.

15.0 POLARIZATION ER PROBES/COUPONS

Polarization ER probes/coupons to be installed by CP contractor at pre-identified two (2) locations, along ROW. The ER probes should have access for internal Corrosion monitoring while system is under full operating pressure.The tools are to be designed for exposure, insertion, retrieval and replace under pressure through [preferably] a 2” access fitting body and should incorporate such features to ensure that the equipment may be used safely, swiftly, and without difficulty by operating personnel that are versed in it’s simple principle of operation [Electrical Resistance Technique]. The Material of the ER Probe shall be pipeline alloy. The ER probes are to be integrated with corrosion monitoring system so that these can be readily retrieved for resistance measurement. Portable ER probe resistance measuring instruments shall be supplied with the system. The reading instrument to be re-chargeable-battery operated and capable of directly reading ER probe resistance. For External Corrosion monitoring Polarization Coupons to be placed at every CP Station and midway between two CP Stations,alongwith a permanent reference Copper Copper Sulphate electrode placed very close to the coupon [made of pipe alloy] so that iR drop free potential could be monitored. The Coupons shall be integral part of the installed CP System.

16.0 PAINTING:

The sheet steel used for fabrication shall be thoroughly cleaned and degreased to remove mill scale, rust, grease and dirt. Fabricated structures shall be pickled and then rinsed to remove any trace of acid. The under surfaces shall be prepared by applying a coat of phosphate paint and a coat of yellow zinc chromate primer. The under surfaces shall be free from all imperfections before undertaking the finished coat. After preparation of the under surface, spray painting with two coats of final paint shall be done. The finished panel shall be dried in oven in dust free atmosphere. Panel finish shall be free from imperfections like pin holes, orange peels, run off paint etc. All unpainted steel parts shall be cadmium plated to prevent rust formation.

17.0 CABLES

Cables shall be annealed high conductivity, tinned, stranded copper conductor, PE insulated 650V grade, and PVC sheathed FRLS. The size of the copper conductor shall be 6 sq mm for anode cable from anode to junction box, 10 mm2 from junction box to test station, 10 mm2 from test station to pipeline. The size of the conductor shall be 4 mm2 for potential measurement and 25 mm2 for bonding, polarisation cell / grounding cell and surge diverter connection purpose. The anode cable from anode to junction box shall be enamoured. The length of anode tail cable shall be sufficient enough to reach junction box (buried) in case of temporary CP anode and up to test station in case of permanent CP anodes.

18.0 INSTALLATION 18.1 CABLE LAYING

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18.2 Cables shall be laid in accordance with approved layout drawings to be prepared by the contractor. No straight through joint shall be permitted in a single run of cable. Cable route shall be carefully measured and cables cut to required length.

18.3 All cables inside station/plant area shall be laid at a depth of 0.75 M. Cables outside station/plant area

shall be laid at a depth of 1.5 m. Cables shall be laid in sand under brick cover back filled with normal soil. Out side the station/ plant area the routes shall be marked with polyethylene cable warning mats placed at a depth of 0.9 m from the finished grade.

18.4 All underground unarmoured cables forming part of permanent CP system shall run through PE sleeves.

Cables along the pipeline shall be carried along the top of the pipe by securely strapping it with adhesive tape or equivalent as required.

18.5 RCC or GI pipes of proper size shall be provided for all underground cables for road crossings. 18.6 Cables shall be neatly arranged in trenches in such a manner that crisscrossing is avoided and final take

off to equipment is facilitated. 18.7 Cable root markers shall be installed aboveground at suitable intervals. 18.8 In no case cables shall pass from below underground pipeline. All cables shall be placed above

underground pipeline and tightened with tape. 18.9 CABLE TO PIPE CONNECTIONS

All cable connections to the pipeline including charged foreign pipeline shall be made using an (owner) approved exothermic process e.g.: Pin Brazing & in exceptional cases with prior approval of owner Cadwelding. The Pin Brazing to have

• Extremely low Contact Resistance ≤ 0.1 Ω. • Low transition resistance 7.5 to 14 μΩ per brazed joint • High mechanical strength Binding strength 490 N/mm2 Shear Strength 245 N/mm2 • Brazing Temperature 6500 C • Time per Braze 2 Seconds • Weather Effect Suitable for all weather operation • Life 35 Years

o Field Test Cable Connection through Pin Brazing to be field tested for contact resistance & Temperature etc.

19.0 CIVIL WORKS

All civil works associated with the complete cathodic protection work shall be included in the scope of CP contractor. This shall include providing cable trenches, foundation for equipment and all test stations etc.

20.0 TESTING AND INSPECTION AT WORKS 20.1 Owner/ Owner’s representative shall visit the works during manufacture of various equipment [Anodes,

Cables, Junction Boxes, Test Lead Points etc.] to assess the progress of work as well as to ascertain that only quality raw material and fabrication technology is used for the same. All necessary assistance during such inspections shall be provided by the contractor/fabricator to owner’s representative.

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20.2 The minimum testing, inspection requirements for all components/ equipment shall conform to the requirements as defined in the relevant codes and standards. Detailed inspection and testing procedures along with the acceptance criteria, including various stages where hold points, review etc shall be for owners inspection, shall be prepared by CONTRACTOR for Owner’s approval.

20.3 Test certificates including test records, performance curves etc. shall be furnished. All test certificates

shall be endorsed with sufficient information to identify equipment to which the certificate refers to and must carry project title, owner’s name and purchase order details etc.

20.4 Owner reserves the right to ask for inspection of all or any item under the contract and witness all tests

and carry out inspection or authorise his representative to witness test and carry out inspection. CONTRACTOR shall notify the Owner or Owner’s representative at least 20 days in advance giving exact details of tests, dates and addresses of locations where the tests would be carried out.

21.0 PACKING AND TRANSPORT

All equipment/ material shall be protected for inland/ marine transport, carriage at site and outdoor storage during transit and at site. All packages shall be clearly, legibly and durably marked with uniform block letters giving the relevant equipment/ material details. Each package shall contain a packing list in a water proof envelope. Copies of the packing list, in triplicate, shall be forwarded to owner prior to despatch. All items of material shall be clearly marked for easy identification against the packing list.

22.0 SYSTEM TESTING, COMMISSIONING AND INTERFERENCE MITIGATION 22.1 SYSTEM TESTING AT SITE 22.2 Contractor shall furnish the detailed field testing and commissioning procedure for approval. Field tests

as per the approved procedures shall be carried out on the equipment/ systems before being put into service. The acceptance of the complete installation shall be contingent upon inspection and field test results being satisfactory.

22.3 Before the CP facilities are placed in operation all necessary tests shall be carried out to establish that

all equipment, devices, wiring and connection, etc. have been correctly installed, connected and are in good working condition as required for intended operation.

22.4 Owner/Owner’s representative may witness all the tests. At least one week’s notice shall be given before

commencing the tests. 22.5 All tools, equipment and instruments required for testing shall be provided by C P CONTRACTOR. 22.6 Generally following tests shall be carried out and recorded in proforma given in subsequent clauses.

Checking : Visual inspection, comparison with drawings and specifications. Inspection : Detailed physical inspection & Dimensions measurement Testing : Simulation tests of equipment to determine its operational fitness.

i. Cables

• Cable no. • Voltage grade • Conductor cross section • Continuity check • Voltage test • Insulation resistance values between core and earth. • All cables shall be tested by 500 V megger.

ii. Insulating Joints

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Checking of insulating joint for leakage, before and after energisation of C.P.by means of insulating joint tester. Structure-to-electrolyte potential of both protected and non-protected sides of insulating joint shall be checked before and after energisation of CP system. Grounding cell/Surge divertor shall be connected thereafter.

iii. Polarisation cell • Location/ identification number • Rating • Check for continuity • Check for wiring • Check for standby current drain with CP energisation (current drain with respect to

voltage across the device/cell shall be recorded).

iv. Grounding Cell

• Location • Type (no. of anodes) • Ratings

v. Surge diverter

• Location/ identification number • Ratings • Check for healthiness

vi. Anode ground beds

• Location/ test station number • Current Output of each Anode • Current output of the ground bed

22.7 COMMISSIONING 22.7.1 Natural pipe to soil potential [P-S-P] shall be measured at each test station [TLP] location prior to

connecting anodes to pipeline. The pipe to soil potential observation shall be repeated after connecting the anodes and allowing sufficient time for polarization. The current output of the anode installation shall also be measured to ensure that it does not exceed the output current capacity of the anodes. In case the anode output current exceeds the rated capacity it shall be controlled by insertion of resistance element in the anode circuit inside test station and the pipe to soil potential shall be rechecked for adequacy of protection. Additional anodes shall be provided where required to achieve desired level of protection [PSP].

Each anode installation shall become individually operational as above.

22.7.2 After connecting all the anode ground beds to pipe line, measurement of pipe to soil potentials shall be taken at each test station [TLP] to ensure adequate conformity to protection criteria.

22.7.3 In case of insufficient protection as per the NACE CP design criteria on any portion of the pipe line,

CONTRACTOR shall carry out necessary additions/ modifications to the provided protection in consultation with the ENGINEER so that NACE criteria is met.

22.8 INTERFERENCE MITIGATION

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Investigation shall be made by an expert agency with prior experience [such as Penspen U.K., PLE GmbH, Van De Velde etc.] for stray current electrolysis of the pipeline. Interference due to high voltage DC lines, electric traction & installed CP System of existing underground utilities (such as underground pipelines of ONGC,GAIL,IOCL H.P.C.L.,City Gas etc.), and make suitable Recommendations so that recommended D.C. Interference mitigative measures could be installed. The C.P. Contractor to carry out Interference due to overhead AC lines and install suitable mitigative measures for AC Interference. Measurements including pipe to soil potential [PSP] and pipe line current etc. on the pipeline/ structure being CP protected shall be made to investigate the current discharge [into surrounding soil electrolyte] and collection/pick-up locations. In case of fluctuating stray currents investigation shall be made continuously over a period of time 24 – 72 Hrs. using computerized data logger and if required simultaneously at different locations to find out the stray current source. For long line measurements, recorders data loggers (computerized) shall preferably be used. Where foreign pipeline (unprotected or protected by independent CP system) runs in parallel to the pipeline in same trench or very near to the pipeline, and is not bonded to the pipeline then investigation shall be made for current pickup & discharge points on both the pipelines. Mitigation measures shall be provided depending on type of interference. These shall include installation of bond with variable resistor and diodes, installation of galvanic anodes for auxiliary drainage of current, adjustment/ relocation (if possible) of offending interference source, provision of electrical shield etc. depending on the type of interference. Between an existing pipeline & upcoming pipeline a concrete raft [size to be approved by owner as per OISD] is to be provided as a barrier. The new pipeline will pass below the existing U/G Pipeline. Bonding with foreign pipeline/ structure as a mitigation measure shall be provided where the owner of the pipeline/ structure has no objection, otherwise alternative mitigation measure shall be provided. Wherever bonding is provided for mitigation the bonding resistor shall be adjusted for optimum value for minimum / no interference so that no net current flows from one to the other pipeline. Galvanic anodes installed as a mitigation measure shall be sized for the life specified for permanent CP.

23.0 SYSTEM MONITORING

The temporary CP system provided shall be monitored at all test stations once in a month for healthiness/ adequacy of protection till commissioning of permanent CP or for design life of temporary CP specified, whichever is more. During this period if any deficiency/ interference in protection system is noticed the same shall be rectified / augmented by additional anodes etc. as required. The monitoring report shall be submitted regularly to owner for his review / information / Approval.

24.0 DRAWINGS AND DOCUMENTS 24.1 GENERAL 24.2 Within three weeks from the date of issue of PURCHASER ORDER, CONTRACTOR shall submit four

copies of the list of all drawings/ data manuals/procedures for approval, identifying each by a number and descriptive title and giving the schedule date. This list shall be revised and extended, as necessary, during the progress of work.

24.3 All drawings and documents shall be in English and shall follow metric system. Number of copies of

each submission shall be as follows unless otherwise specified.

Submission No. of copies a. For review / approval 4 copies b. Final/ As built drawings execution/ construction 6 copies + 2 set of [CD] c. Drawings issued for execution/ construction 4 copies + [CD] d. Operation/ Maintenance manual, vendor data 6 copies + [CD]

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e. Original permissions for Interference detection and Mitigation from other utility owners. f. The Original deed for Anode Bed Plot shall be handed over to GAIL.

24.4 CONTRACT DRAWINGS AND DOCUMENTS 24.5 As a part of the contract, drawings and documents shall be furnished which shall include but not be

limited to the following:

a. Report on corrosion survey b. Basis of system design and design calculations, equipment selection criteria and sizing calculations. c. Bill of material, material requisitions, purchase requisitions. d. Quality assurance / Quality control procedures

24.6 Detailed construction drawings (including as built status)

a. Sacrificial anode fabrication drawings b. Typical layout drawing for anode ground bed installation and connection. c. Equipment layout, cable layout and schedules. d. TLP & Junction Box Erection / Installation Details Drawing e. Permanent Cu-CuSO4 reference electrode installation Drawing f. Fabrication, installation details of surge diverter, grounding cell and polarisation cell with its enclosure

and housing. g. Cable- to-pipe joint details for charged and non charged pipelines. h. Incorporation of anode beds, polarisation cell, surge diverters, test stations, etc. and other relevant

features of CP system-design in Pipeline alignment sheet and other related drawings. i. Identification of section of pipeline affected by interference, source of interference and details of

interference mitigation arrangements provided. Various measurement data at all relevant test stations with and without mitigation measures provided.

j. Detailed commissioning report including various measurement data at all test stations etc. k. Vendor drawings and catalogues, test certificates. l. Operation and maintenance manual. m. Miscellaneous • Equipment inspection and testing procedure • Construction, installation procedures • Field testing and commissioning procedures • Procedure for monitoring of cathodic protection after commissioning • Quality control procedures. • Post Commissioning Testing/Monitoring Periodicity and Methodology

25.0 INSTRUMENTS, TOOLS AND SPARES 25.1 CONTRACTOR shall include a List of all instruments, tools and tackles necessary for proper operation

and maintenance [O&M], Monitoring of complete cathodic protection [TCP] [PCP] systems and associated equipment that are to be deployed at site, such as Corrosion Voltmeter, Multi-combination Meter, CPL Survey Data Logger, DCVG Meter, Holiday Detector, Pipe Locator, Elcometer for Coating thickness measurement, CAT survey, Soil resistivity meter etc.

25.2 CONTRACTOR shall provide number of spares and consumables being provided for proper operation

and maintenance of part of cathodic protection [TCP] system to be integrated with permanent CP system [PCP] designed on the basis of permanent CP design parameters and associated equipment, for two (2) years un-interrupted operation of the system.

26.0 INFORMATION REQUIRED WITH THE BID

Bidders are advised in their own interest to provide the following information along with the bid without which the bids are liable for summary rejection. A. Work Experience, in detail, Project wise, giving Job content, Year, Status for client etc.

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B. List of Equipments, Tools, Tackles, etc. likely to be deployed at site

1. Basis and calculations for preliminary system design for cathodic protection system [TCP] and [PCP] Viz: Surface Area, Protective Current Required, Anode Weight and size required/provisioned, Anode bed type, Coke Breeze/Backfill required/provisioned, Anode bed Loop Resistance, Remoteness adequacy, Surge Redressal calculated/provisioned, etc.

2. List of formulae with legends to be used for detailed system design calculations. 3. Basis of system design, design calculations, equipment selection criteria, sizing calculations

along with characteristic curves for various equipment. 4. Preliminary bill of material [B O M] for major equipment for [TCP] and [PCP]. 5. Details of the equipment/ material offered along with technical leaflets / related literatures/

catalogues, make, rating, type test certificates. 6. Dimension, weight and general arrangement drawings for each offered equipment. 7. List of instruments, tools and tackles offered for maintenance and operation. 8. List of recommended maintenance / operation spares. 9. Clause-wise deviations, if any, to the specifications along with justifications. 10. List & Credentials of Crew to be deployed at site and contractors home office.

27.0 APPROVED MAKE OF EQUIPMENT / COMPONENTS FOR C.P. SYSTEM 27.1 Transformer Rectifier Unit [TRU] AC Input DC Output, & CPPSM

M/s Canara Electric Controls Mumbai M/s CIMCON Software Services Inc.,Ahmedabad

27.2 MMO Anodes

M/s Titanor Components,Goa M/s Eltech, Netherlands M/s Oranzio De Nora,USA M/s Corpro Technologies, Singapore

27.3 SACRIFICIAL ANODES

M/s METAL FOUNDERS MUMBAI M/S SHAKTI ENTERPRISES AHMEDABAD M/s PROTECH ALLOY ANODES KARAIKUDI M/s SCIENTIFIC METAL ENGINEERS KARAIKUDI M/s CORPEN ANODES M/s ELECTRO-PROTECTION SERVICES

27.4 REFERENCE COPPER COPPER SULPHATE ELECTRODES

M/s Harco USA M/s MC Miller USA M/s BORIN USA M/s Electrochemical Devices USA

27.5 JUNCTION BOXES [AJB,CJB,TLP]

M/s EX PROTECTA, MUMBAI M/s FCG LIMITED, MUMBAI M/s FLEXPRO, NAVSARI M/s BALIGA LIGHTING EQUIPMENTS, CHENNAI M/s UNDERGROUND PIPELINE & NDT SERVICES, NOIDA M/s CORROSION CONTROL SERVICES, MUMBAI M/S CORR-TECH INTERNATIONAL, AHMEDABAD

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27.6 CABLES

M/s NETCO CABLES M/s FORT GLOSTER CABLES M/s CABLE CORPORATION OF INDIA LTD.

27.7 PIN BRAZING

M/s SAFETRACK 27.8 THERMITWELD

M/s ERICO EUROPA

27.9 SURGE DIVERTORS

M/s DEHN GmbH M/s CITEL M/s MC MILLER M/s CONTROL TECHNOLOGY M/s DAIRYLAND ELECTRICAL INDUSTRIES M/s INTERNATIONAL CORROSION CONTROL Inc. M/s RAYCHEM

27.10 POLARIZATION CELLS / A C DECOUPLING DEVICE

M/s KIRK ENGINEERING M/s INTERNATIONAL CORROSION CONTROL Inc. M/s ELK ENGINEERING ASSOCIATES Inc,

27.11 INSULATION MONO BLOCKS

M/s BASCO M/s ALFA M/s R M A M/s NUOVAGIUNGAS M/s ZUNT M/s PHOCENNE M/s PIPELINE ENGINEERING & SUPPLY CO. M/s TUBE TURN TECHNOLOGIES M/s KEROTEST MFG. M/s INTERNATIONAL CORROSION CONTROL Inc. M/s PIPELINE SEAL & INSULATORS Inc.,

27.12 E R PROBES

M/s ROHRBACK COSACO SYSTEMS,INC. M/s METAL SAMPLES M/s CORRTEST

27.13 THIRD PARTY INSPECTION AGENCIES

M/s BVIS M/s EIL M/s PDIL M/s DNV

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APPENDIX – A

COMPUTERISED TEST STATION UNITS (CTSUS) FOR CATHODIC PROTECTION PERFORMANCE MONITORING

Each CTSU (Computerised Test Station Unit) is a Microprocessor based low CMOS circuitry with built in RTC, installed near a Computerised Test Station to acquire and store the complete CP System performance data available for each Test station. CTSUs are typically designed for outdoor applications and are NEMA4 protected. Once stored, the data can be downloaded as under: a) By a remote computer by telephone, cellular phone or radio link/OFC. b) By portable handheld data reader using local communication port. Key features of the CTSU are as under: 1. Recording Rate To be configured from 1 reading per second to 1 reading per

365 days. 2. Battery backup Lithium battery back up option allowing CTSU ECU to retain

data for 10 years on a single charge. 3. Timing Status input sampling time 10m sec to 2.5 m-sec. 4. Power requirement The CTSU to be powered by 24 ±15% Volts DC

5. The CTSU shall be able

to read and record. PSP and current data of pipeline & foreign pipeline/pipelines upto 10,000 sets to be stored till downloaded

6. Inputs available Minimum 10 nos. [5 inputs for PSP & 5 inputs for current.]

7. Protection against Voltage/current surges expected along the pipeline & foreign structure.

8. Test Station Reader (TSR)

Portable type suitable for field transport & handing. Unit enclosure is weather proof, IP55.

9. Input battery for TSR Internal rechargeable battery provided.

To be installed at preidentified locations [10 Numbers] for [CJ PL]

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APPENDIX-B

POST C.P. COMMISSIONING SURVEYS

1. Coating Conductance Surveys For evaluation of the electrical strength of the coating, post commissioning of the C.P. System, after one (1) Month, Coating Conductance surveys to be conducted, to serve as Reference for future comparison. Although same coating specifications are used throughout the length of the pipeline, effective electrical strength thereby it’s ability to resist flow of current would reasonably vary on account of terrain, construction defects, soil resistivity along the Pipeline length. For conducting coating conductance surveys, Potential (ΔV)& (ΔI) Current are to be measured at two consecutive “B” type Test Lead Points [TLP],w.r.t remote earth using CuCuSO4 reference electrode, alternatively with current interrupter “On” & “Off” at each measurement point. The difference of the two ΔI will be the C.P. Current being collected by this section of the pipeline. The difference of the two ΔV will be the average change in pipeline potential within the test section owing the current received from C.P. System. The above procedure to be repeated for all “B” type TLP for evaluating coating conductance value for different sections along the pipeline. All the Data obtained is to be handed over to the owner & will form part of final Technical Documentation. Before commencement of site surveys the survey procedure shall be got duly approved from the Owner.

2. Pearson & DCVG Survey Post commissioning of the C.P. System, after 30 days of Line polarization, CPL Survey will be conducted for evaluation of coating condition to serve as future Benchmark for comparative evaluation. Any finding of coating defect in particular, where coating defects and holidays are high, have to be further established through a separate Pearson cum DCVG survey for the defective stretch delineated as above from CPL survey findings.

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Prior to commencement of Pearson cum DCVG survey, the survey procedure to be got approved from the Owner. Only Good & Proven survey equipment and trained, experienced manpower to be used. Defects identified by Pearson to be further Surveyed using DCVG technique for defect classification. All survey Data to be submitted to Owner as part of Technical Documentation.

3. Computerized Potential Logging [CPL] survey

Post commissioning of the C.P. System, after 30 days of Line polarization, a Computerized Potential Logging [CPL] survey will be conducted, as per procedure, already got approved by the Owner. The “On”/”Off” Potential survey. For the survey, Data Logger of repute & Current interrupter [if not available in the TRU] will be used by experienced and trained manpower. All the survey data and findings of under-protected, over-protected zones, short etc. shall be handed over to the owner as part of final technical Documentation. Suitable remediation measures to be recommended for achieving adequacy of protection throughout the pipeline length. This CPL survey Data will serve as base Data for future comparative evaluations of the Protective system adequacy.

4. A.C. /D.C. Interference Detection & Mitigation

Post commissioning of the C.P. System, after 30 days of Line polarization, an AC / DC Interference survey to detect presence (or absence) of induced AC Voltages [which in certain circumstances may be fatal] on the underground pipeline that run parallel to AC transmission systems [having voltages greater than or equal to ≥63KV] shall be carried out. Measurement of P-S-P shall be taken at every TLP of the pipeline that run parallel to overhead AC transmission lines and are within 20 M of transmission line alignment. On detection of AC induced Hazardous voltages suitable Mitigative measures such as grounding of the pipeline with Zn / Mg Grounding cell, installation of Polarization cell etc. shall be resorted to dissipate Ac induced hazardous voltages to ground in controlled manner. Type “A” TLP shall be provided at these locations having AC induced Hazardous voltages on the pipeline. DC Interference Detection from existing CP system in close vicinity of [CJ] ROW and any other DC source such as electric traction, switching yard, welding shop etc. Appropriate measures for mitigation to be recommended for installation by CP contractor. Prior to site survey commencement, the Approval for survey procedure, from the Owner, shall be taken.

Σ Σ Σ

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APPENDIX-C

INTERFACING WITH SCADA

Cathodic Protection (CP) panel shall be properly interfaced with RTU through RS 485 serial link for various signals like pipeline under protection, pipeline overprotection, all reference fail, unit working in auto mode, unit working in AVCC mode, unit working in local / remote mode, setting of DC O/P voltage, setting of DC output current, setting of Pipe soil potential (PSP), setting of auto / AVCC mode. CONTRACTOR to note that SCADA vendor shall provide RS 485 serial link at the RTUs for interfacing with CP system. Hence, CONTRACTOR shall also provide RS 485 serial link (Modbus ASCII & Modbus RTU protocol which shall be user selectable). The digital and analog data shall be made available to RTU (SCADA) and it shall be mapped in the contiguous registers so that data can be fetched / written in minimum transactions. CONTRACTOR shall furnish all details like pin configuration and signal wise MODBUS address mapping list etc. for smooth interfacing of this communication link with RTU (SCADA). CONTRACTOR shall also furnish the details of implemented MODBUS protocol like function codes for read and write, CRC implementation, BCC implementation, register addressing methods / mapping etc. during detail engineering for serial interfaces with RTU (SCADA). The following hardwired signals shall be taken from CP system to SCADA system (however hardwired cables shall be routed through PLC cabinet):

PSP Value Impressed Voltage Impressed Current Start / Stop of Current Interrupter

Σ Σ Σ

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COMPLIANCE CERTIFICATE CP Contractor to submit the following Compliance certificate in case of compliance and attach Deviation if any duly Approved by The Owner

a. TABLE OF COMPLIANCE : to be filled by C P Contractor

S.No. Specification Clause Reference

Compliance Yes/No

Deviation

Justification Remarks

This being a no deviation bid,any deviation sought without appropriate justification is liable to be not accepted & rejection of Bid.

Additional sheets,if required,may be attached duly signed by CP contractor with seal.

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ANNEXURE –I SOIL RESISTIVITY DATA

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ANNEXURE – II CROSSING DETAILS

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ANNEXURE – III PROCESS FLOW DIAGRAM

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ANNEXURE – IV DRAWINGS

Page 46 of 132

GAIL (India) Ltd.Chhainsa-Gurgaon-Jhajjar-Hissar Gas Pipeline ProjectChhainsa Hissar SectionSoil Resistivity Survey Report

CGJHPL-S06-J00-001_0A THEO DESH CONSULTANTS

CONTENTS

Sr.No. DESCRIPTION Page

No.

1 Introduction 1

2 Scope of Work 1 - 2

3 Measuring Principal 2 - 4

4 Procedure for Taking an Aqua - II Reading 4 - 5

5 General Instructions 5

6 Corrosivity of Soil 5

7 Results 6

8 Conclusion & Recommendation 7

9 Date of Survey 7

10 ANNEXURES

Soil Resistivity Results Annex.-I 8 - 77

Soil Resistivity Results at a glance Annex.-II 78 - 87

Histogram Annex.-III 88

Foreign Pipeline Data Annex.-IV 89

Calibration Certificate 90

Page 47 of 132

GAIL (India) Ltd. Chhainsa-Gurgaon-Jhajjar-Hissar Gas Pipeline Project Chhainsa Hissar Section Soil Resistivity Survey Report

CGJHPL-S06-J00-001_0A THEO-DESH CONSULTANTS Page No. 1


CHHAINSA-GURGAON-JHAJJAR-HISSAR GAS PIPELINE PROJECT

(CHHAINSA HISSAR SECTION)

SOIL RESISTIVITY SURVEY REPORT 1. INTRODUCTION:

The measurement of soil resistivity along the entire route of the proposed Gas Pipeline from Chhainsa-Gurgaon-Jhajjar-Hissar is carried out as per terms and conditions of the contract. The length of the proposed pipeline from existing Chhainsa Terminal on Vijaypur-Dadri Gas Pipeline to Chorkarsa is 204.149 km. For the purpose of protecting pipeline against cathodic action, soil resistivities at various points have been measured as part of the work. This report covers the same.

The resistivity has been measured approximately at every 500 meters at 1, 1.5, 2 and 2.5 meters depth as per scope of work.

The instrument used for measuring resistivity is Aqua II AC resistivity meter. The instrument was

calibrated prior to starting of Soil Resistivity Survey work and Calibration Test Report is enclosed along with this report.

The locations where Soil resistivities are taken are designated as test location L1, L2 etc.

Resistivity at various locations is measured for the pipelines accordingly. In all Resistivity at 416 locations have been taken along the proposed route of Pipeline from existing Chhainsa Terminal on Vijaypur-Dadri Gas Pipeline to Chorkarsa, have been measured.

2. SCOPE OF WORK Corrosion survey includes measurement of soil resistivity along Right of Use (ROU) of the

proposed pipeline.

2.1 CODES AND STANDARDS Equipment and measurement techniques shall unless otherwise specified, conform to the

requirement of following latest applicable standards : BIS Specifications BS Specifications NACE Publications The work shall be carried out in compliance with all applicable local laws and regulations. 2.2 SOIL RESISTIVITY SURVEY : Unless otherwise specified the soil resistivity measurements shall be carried out at intervals

of approximately 500 m. Along the ROU where soil resistivity is less than 100 ohm / m. And twos successive reading differ by more than 2:1 then additional soil resistivity readings in between the two location shall be taken.

To carryout the soil resistivity measurement, Wenner’s 4 Pin method or approved equal shall

be used. The depth of resistivity measurement shall be approximate 1.5 m. From NGL. At locations where multi layer soil with large variation in resistivity / corrosiveness is expected

Page 48 of 132



measurements at additional depth of upto 2.5 m (approx.) or more shall be taken. In general the resistivity of soil which shall be surrounding the pipe shall be measured. Hence the depth of measurement / electrode spacing may vary depending on topography and strata at the area. In general, electrode spacing shall be approximately equal to 1.5 times the depth of the pipeline.

At places where Right of Way has not yet been cleared measurements shall be made right

over the centre line of pipeline route surveyed accounting for the cuttings / fittings also. All measurements shall be taken at right angles to the right of way unless otherwise asked by

OWNER or his representative at site. At places in right of way where other pipe lines are already existing care shall be taken to

precisely locate such pipes line and take such precautions that observations are not adversely affected by presence of such pipelines.

Care shall also be taken that the observations are not influenced by presence of other earth

currents in the area especially in the vicinity of HT lines and plants using earth return in their source of power etc.

All measurements shall be made and recorded in metric units. While recording the data

reference to the nearest intersecting point shall be made; To provide visual representation of variations in the resistivities along right of way, values shall be plotted on semi-log graph sheets. The resistivity graph shall also indicate the resistivities at additional depths measured at various locations and depth of water table.

2.3 TESTS OF SOIL SAMPLES Soil / water samples shall be collected along the Right of Way for analysis. Samples shall be

collected on an average at one location per every 10 KM along Right of way with minimum at two locations. Exact locations shall be decided at site depending on the type of soil, soil resistivity and in consultation with GAIL. The soil samples shall be collected at 1 m and 2 m depth at each location.

The collected soil / water samples shall be analysed to determine presence and percentage

of corrosive compounds including moisture content, oxygen activity and pH value. 3. MEASURING PRINCIPLE This Soil Resistivity at various depths viz. 1, 1.5, 2 and 2.5 meter was measured. The method for

measuring Soil resistivity adopted by us is 4 Terminal Method popularly known as Wenner Method. The calibration certificates for the instruments are attached with this report.

In the Wenner arrangement for measurement of resistivity, the four electrodes are driven into

ground at equal distance (D) when a small current is passed through outer electrodes, a potential difference is set up between the inner pair, and this potential is measured on the meter. Then it is compared with the potential drop across a known resistance. The value of the resistance (R) giving the same potential drop is the apparent resistance between the inner electrodes.

The Soil Resistivity (o) as per Wenner's principle is:

o = 2πDR ... Ohm - cm. Where D = Spacing between the electrodes in 'cm' & R = Resistance of the soil at a depth of 'D' meter in Ohm.

Page 49 of 132



REF REF

GENERATOR AMPLIFIER V1 V2 C C1 2

AIR

EQUIPMENTS USED:-

(i) Aqua II A.C. Resistivity Meter consists of two units - Generator & Amplifier 1 Set (ii) Current / Potential Electrodes 19 mm dia and 500mm long M.S. Rods4 Nos. (iii) Interconnecting Cable between meters and current and potential electrodes.

Aqua II is a compact, self contained instrument based on the principal of electrical resistivity. It consists of two units housed in a metal case. One unit - The Generator, generates the necessary low frequency square wave current. The Second unit - The Amplifier contains the necessary circuits to measure the resistivity of the ground. GENERATOR

The Generator generates low frequency about 4 Hz. square wave of electric pulse by using Relay as commutator. Different voltage ranges of 100 V, 200 V are generated using 9 Volts dry cells or 12 Volts rechargeable batteries. The high frequency oscillator and a specially designed transformer step up Voltages from Small battery voltages. Voltage Selector switch is used to obtain the desired voltage. The ammeter connected in series with output voltage indicates drain current.

The battery indicator is provided to assess the battery condition at any time. Specifications: (i) Power Supply 12 cells of 1.5 Volts type Eveready 1055 or equivalent. (ii) Power output 4 Watts max.

(iii) Voltage output Two Ranges i) 100 volts ii) 200 volts

(Peak to Peak) @ 4 Hz. approx.

(iv) Current output 80 mA max. (Peak to Peak)

SOIL ROD

D D D

Page 50 of 132



(v) Weight 4.75 Kg. (vi) Dimensions 370 mm x 140 mm x 120 mm AMPLIFIER This unit consists of a filter and an amplifier. The filter is used to filter to out unwanted signals and allow only the signals generated by the generator to pass through. Thus the effect of D.C. ground currents and 50 Hz power lines is filtered and selected signal is passed on to the amplifier. The amplifier like the generator has its built-in power source i.e. 2 x 9 Volts dry cells or 12 x 1.5 Volts dry cells. Integrated circuitry is used for high stability.

The amplifier is provided with minimum controls, which enable is getting quick readings. The external, internal switch is used to record the voltage developed between the points V1 and V2 and to compare it by using the ten turn helical potentiometer. Depending upon the position of the range selector, the reading of the potentiometer is recorded by using appropriate multiplying factor. Coarse gain control and fine gain control used to get a reading of 30 to 509 microamperes on the micro-ammeter on external seating. A battery indicated is provided to assess the battery condition at any time. Specifications: Power Supply 12 cells of 1.5 Volt type Everyday 1055 or its equivalent. Resistance Ranges i) 0 - 1 ohm ii) 0 - 10 ohm iii) 0 - 100 ohm 0 - 1000 ohm v) 0 - 10000 ohm. (iii) Least count 0.001 Ohm (iv) Weight 4.5 Kg. (v) Depth of Penetration 600 meters for 0 = 50 Ohm meter (vi) Accuracy + 2% up to 0.1 Ohm, + 8% upto 0.003 Ohm.

4. PROCEDURE FOR TAKING AN AQUA II READING:

1. Coarse gain was set on position '1' and fine gain was rotated completely anti

clock-wise. Then the amplifier was switched on. A momentary deflection was observed on the meter.

2. Voltage Selector Switch was set at 100 V and generator was switched on.

3. Internal / External switch was set on position external.

Amplifier was connected to Voltage electrodes and meter showed relative value of Voltage at EXT.

4. Fine and coarse gain control was adjusted in such a way that deflection of approx. three quarters on ammeter is obtained.

5. Internal / External switch was then positioned on internal.

Amplifier was connected to reference Voltage potentiometer measuring relative value of voltage.

6. Reference potentiometer and potentiometer range control was adjusted so that the same meter deflection was achieved in the position internal and external.

7. The necessary checks were carried out by switching from internal to external and multi turn Potentiometer was adjusted so as to give same reading, which was obtained for internal and external.

8. Generator was switched off. 9. Potentiometer scale reading was noted along with range setting. It was multiplied with

necessary range factor. 10. Amplifier was switched off.

Page 51 of 132



The resistivity was measured at every 500 meter distance. The above measurements were repeated for electrode spacing of 1, 1.5,2 & 2.5 meter at every location. The readings obtained from the meter were used in calculation for soil resistivity as described in methodology.

TEST RESULTS:

The test results are tabulated and enclosed in Table. The summary is also tabulated and represented. The above test results are also represented in a graphical form (Soil Resistivity Curves) with distance and locations indicated on X - axis and soil resistivity indicated on Y - axis. Soil Resistivity at various depths indicated by means of various soil resistivity curves.

5. GENERAL INSTRUCTIONS 1. The drawings show the soil resistivity at various locations marked at L1, L2. 2. 'X' axis represents chainage of various locations along the route. 3. 'Y' axis represents resistivity in ohm-cm. 4. The curves show joined resistivity values at various depths and they do not represent

intermediate values in between the locations marked. 5. The method of horizontal profiling is used to determine the variations in the apparent

resistivity in a horizontal direction within a pre-selected depth range.

INSTRUMENT DETAILS

Sr. No.

Instrument Type Instrument Sr. No.

Make Date of Calibration

1. AQUA II Plus AC Resistivity meter 20030406 A&G Minitronix 20.11.2007 2. AQUA II Compact AC Earth

Resistivity meter 20040203 A&G Minitronix 20.11.2007

3. AQUA II Plus AC Resistivity meter 980936 A&G Minitronix 20.11.2007 4. AQUA II AC Earth Resistivity Meter 950010 A&G Minitronix 20.11.2007

6. CORROSIVITY OF SOIL: -

Before any system of cathodic protection can be designed, a few data are necessary. These data pertain to the conditions existing on each location.

Soil can hold different moisture and thereby different dissolved salts. Increased dissolved salts increase the conductivity of the soil; increased conductivity means larger current for given potential difference, and therefore larger corrosion rate. Specific conductivity is reciprocal of specific resistivity. Therefore soil resistivity gives a fair measure of the corrosiveness in the manner indicated below:

Degree of Corrosivity of Soil

Very Low Low Medium High Very High Soil Resistivity In

Ohm-cm. 10,000

and above 5000

to 10000 2500 to 5000 1000

to 2500 Less than

1000 If any pipeline is yet at a design stage, this survey helps in determining the specifications of the

coating material. If the soil is of high resistivity, an average coating can be specified and in more corrosive soil, coating with very rigid specification and of higher standards of workmanship is essential. Also the presence of different chemicals present in the soil affects the degree of corrosivity of the soil.

Page 52 of 132



7. RESULTS (a) Degree of Corrosivity as per Resistivity Data. The field tests indicate the corrosivity of the soil in sections tabulated below: Chhainsa Hissar Section

Chainage (km) Sr. No From To Aggresivenes

1 0 - 6.48 HIGHLY CORROSIVE 2 6.48 - 13.01 MEDIUM CORROSIVE 3 13.01 - 13.51 HIGHLY CORROSIVE 4 13.51 - 15.02 MEDIUM CORROSIVE 5 15.02 - 15.52 HIGHLY CORROSIVE 6 15.52 - 16.52 MEDIUM CORROSIVE 7 16.52 - 17.49 HIGHLY CORROSIVE 8 17.49 - 18.42 MEDIUM CORROSIVE 9 18.42 - 19.03 HIGHLY CORROSIVE

10 19.03 - 19.52 MEDIUM CORROSIVE 11 19.52 - 20.02 HIGHLY CORROSIVE 12 20.02 - 21.52 MEDIUM CORROSIVE 13 21.52 - 23.53 HIGHLY CORROSIVE 14 23.53 - 27.07 MEDIUM CORROSIVE 15 27.07 - 27.56 HIGHLY CORROSIVE 16 27.56 - 28.01 MEDIUM CORROSIVE 17 28.01 - 28.55 HIGHLY CORROSIVE 18 28.55 - 30.05 MEDIUM CORROSIVE 19 30.05 - 30.53 HIGHLY CORROSIVE 20 30.53 - 45.16 MEDIUM CORROSIVE 21 45.16 - 45.37 LOW CORROSIVE 22 45.37 - 45.47 MEDIUM CORROSIVE 23 45.47 - 47.21 LOW CORROSIVE 24 47.21 - 120.04 MEDIUM CORROSIVE 25 120.04 - 123.04 HIGHLY CORROSIVE 26 123.04 - 123.52 MEDIUM CORROSIVE 27 123.52 - 124.01 HIGHLY CORROSIVE 28 124.01 - 143.52 MEDIUM CORROSIVE 29 143.52 - 146.01 HIGHLY CORROSIVE 30 146.01 - 154.03 MEDIUM CORROSIVE 31 154.03 - 155.5 HIGHLY CORROSIVE 32 155.5 - 157.01 MEDIUM CORROSIVE 33 157.01 - 162.03 HIGHLY CORROSIVE 34 162.03 - 162.51 MEDIUM CORROSIVE 35 162.51 - 163 HIGHLY CORROSIVE 36 163 - 172.51 MEDIUM CORROSIVE 37 172.51 - 173.01 HIGHLY CORROSIVE 38 173.01 - 174.51 MEDIUM CORROSIVE 39 174.51 - 176.03 HIGHLY CORROSIVE 40 176.03 - 181.02 MEDIUM CORROSIVE

Page 53 of 132



Chainage (km) Sr. No From To Aggresivenes

41 181.02 - 181.52 HIGHLY CORROSIVE 42 181.52 - 182.51 MEDIUM CORROSIVE 43 182.51 - 183.02 HIGHLY CORROSIVE 44 183.02 - 190.52 MEDIUM CORROSIVE 45 190.52 - 191.02 HIGHLY CORROSIVE 46 191.02 - 192.52 MEDIUM CORROSIVE 47 192.52 - 193.02 HIGHLY CORROSIVE 48 193.02 - 193.52 MEDIUM CORROSIVE 49 193.52 - 194.02 HIGHLY CORROSIVE 50 194.02 - 195.54 MEDIUM CORROSIVE 51 195.54 - 196.02 HIGHLY CORROSIVE 52 196.02 - 196.52 MEDIUM CORROSIVE 53 196.52 - 197.01 HIGHLY CORROSIVE 54 197.01 - 197.51 MEDIUM CORROSIVE 55 197.51 - 201.01 HIGHLY CORROSIVE 56 201.01 - 201.52 VERY HIGHLY CORROSIVE 57 201.52 - 202.02 HIGHLY CORROSIVE 58 202.02 - 204.14 VERY HIGHLY CORROSIVE

From the above summary we can conclude that the degree of corrosivity is very high in the stretches 201.01 – 201.52 km and 202.02 – 204.14 Km. The degree of corrosivity in most of the portion is medium to highly corrosive. So in general, the soil is medium to highly corrosive along the entire route of the proposed pipeline.

8. CONCLUSIONS & RECOMMENDATIONS: -

1. Based on aggressiveness of the soil it is recommended to design a good cathodic protection system like ICCP to protect the pipeline from corrosion.

2. Proper care should be taken while crossing existing Hydrocarbon Pipeline (List enclosed on

Page No. 89) which is cathodically protected. 9. DATE OF SURVEY The entire soil resistivity survey work as per specification was carried out within 10 days starting

from 26th October, 2007 to 4th November, 2007

FOR THEO-DESH CONSULTANTS (M. N. Deshpande) Partner

BHARUCH Dtd. 05.12.2007

Page 54 of 132


ANNEXURE -II

Location ChainageNo. (m) 100 150 2001 6 1822 2300 18852 480 1985 2111 16343 985 2212 2375 19604 1505 2199 2073 16345 2011 2073 1470 14076 2507 2086 1621 10817 3009 2042 1282 13578 3511 2350 2337 14339 4014 1822 1678 113110 4510 2073 1263 140711 5012 1960 1838 113112 5480 1458 2582 191013 5900 2099 2695 223714 6480 2488 3318 273915 6980 2865 3563 339316 7513 2941 3355 331817 8011 3091 3581 344318 8509 3607 3732 339319 8910 3468 3440 316720 9550 3493 3563 336821 10020 3607 3299 364422 10509 2953 2733 314223 11015 3330 3506 364424 11510 3619 3487 339325 12007 3506 3563 336826 12510 3632 3600 341827 13005 3619 3355 364428 13508 2362 3110 321729 14013 3468 3487 392130 14508 3619 3072 364431 15017 3355 3563 366932 15522 2476 3110 311633 16018 3368 3676 354434 16521 2915 3167 316735 17019 1747 5410 419736 17490 1571 2941 339337 17900 2947 3148 3644

Soil Resistivity Test Results at a Glance

27332765

307927333990

3204311038642922

2482311029531759

2953282724503204

2733238827963016

1068210527653047

141417592011

17281068

Resistivity (OHM-CM)

141411311037100510689421618

250

CGJHPL-S06-J00-001_0A THEO DESH CONSULTANTSPage 55 of 132

GAIL (India) Ltd.Chhainsa-Gurgaon-Jhajjar-Hissar Gas Pipeline ProjectChhainsa Hissar SectionSoil Resistivity Survey Report Page 78



Location ChainageNo. (m) 100 150 20038 18416 3079 3563 311639 19025 2237 2733 336840 19522 3217 3713 356941 20018 2438 3110 306642 20534 3355 3431 366943 20985 2941 2941 329244 21524 2702 3525 306645 22014 1659 1828 168446 22555 1282 1621 165947 23032 1527 1565 147048 23525 1910 1536 179749 24077 2777 2959 346850 24527 3079 3148 311651 25034 3330 3563 366952 25565 3217 3506 392153 26044 2941 3449 356954 26578 3607 2507 189855 27065 3493 1744 163456 27563 2350 1461 158357 28008 3217 1942 142058 28545 2099 2884 191059 29064 2903 3431 261460 29516 3217 3299 356961 30048 3079 3318 336862 30528 2073 2733 314263 31076 3569 3676 372064 31510 3079 3110 311665 32025 3820 3902 336866 32536 3870 4618 364467 33053 3318 3374 351968 33585 3079 3506 331869 34026 3594 4166 349370 34524 2941 3299 339371 35058 3217 3563 334372 35534 3795 5410 364473 36036 3217 3487 336874 36578 4298 4354 329275 37051 3079 3355 356976 37562 3217 3468 326777 38046 4109 3487 314278 38578 3858 3638 354479 39036 3833 3845 3443

20732325

2670147713671194

32672765295316651461128816021225163418542356260829532670314232672922263929222482304727961854279626392482267029223047

1178

2733

21053047

Resistivity (OHM-CM)250

263927333142



Location ChainageNo. (m) 100 150 200


Page 79





80 39567 4034 3468 316781 40037 4059 4222 344382 40525 3808 4354 339383 41027 3355 3563 329284 41547 3933 3676 339385 42067 3355 3374 304186 42510 3468 3713 331887 43038 3808 4166 341888 43574 3468 3468 324289 44052 3833 3676 331890 44583 3958 3563 334391 45017 3619 4448 329292 45164 4989 8435 402193 45219 5944 4807 779194 45365 6227 9142 1520595 45472 4210 17342 1809696 45691 5906 18567 2312297 46124 6786 18944 2802398 46507 7288 15457 3166799 47011 7037 18284 23625

100 47097 5089 11310 13697101 47210 6139 7728 7288102 47285 4675 6117 3770103 47568 3632 3487 3192104 48033 3695 3600 3519105 48512 3946 2771 3217106 49089 3896 3487 3318107 49566 3456 3186 2890108 50056 3958 3713 3318109 50532 3971 3958 3493110 51023 3456 2969 3142111 51566 3720 3487 2915112 52074 4034 3864 3468113 52509 3958 3695 3142114 53012 3695 3487 3116115 53541 3908 3091 3066116 54033 3946 3054 2966117 54562 3657 3431 3142118 55029 3795 3110 2815119 55506 3908 3487 3343120 56074 3468 3242 2815121 56541 3732 3676 3142

29222702295326392827267029852953285929533173293734566754

13195249762466238642406843125915865911148692482267025452953204228592922238820423204267023883016254524502042301621682545





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122 57089 3958 3487 3167123 57563 3908 3732 3418124 58026 3695 3110 3318125 58563 3921 3318 3167126 59013 4097 3299 3418127 59553 3223 3091 2915128 60029 3305 3186 3921129 60532 3958 3167 3695130 61056 3380 3676 3418131 61523 3958 3657 3581132 62059 3971 3732 3318133 62534 3380 3487 3091134 63059 3946 3563 3544135 63587 3958 3732 3167136 64051 3657 3657 2890137 64512 3946 3789 2991138 65029 3958 3468 3167139 65581 3908 3695 3116140 66052 3732 3468 2966141 66552 2752 2978 3066142 67046 2501 2969 2438143 67584 3833 3355 2890144 68059 3594 3695 2915145 68571 3845 3299 3167146 69023 3996 3318 3267147 69581 3946 3110 3343148 70056 3833 3487 2915149 70526 3607 3252 3142150 71056 3921 3468 2865151 71526 3318 3713 3142152 72089 3789 3487 2890153 72566 3921 3110 3242154 73013 3908 3695 3167155 73526 3745 3110 3644156 74056 3921 3468 3167157 74526 4285 3958 3493158 75026 3908 3695 3167159 75582 3958 3657 3242160 76038 4222 3996 2991161 76522 3594 3544 2815162 77026 3958 3110 2890163 77586 4285 3713 3493

257626702136248226702450295327962670279630162545298528902733267025452356254531262953232526702482216827332639226227332011307926703110279627332953298523562545263930472890





Page 81





164 78055 4222 3732 3644165 78532 4034 3487 3569166 79056 3933 4015 3418167 79572 4097 3487 3242168 80059 4335 4034 3041169 80546 3933 3789 3242170 81059 4210 3695 3167171 81556 3908 3676 3318172 82041 4109 3713 3418173 82513 4097 3695 3217174 83096 3808 3468 3493175 83518 3707 3657 3167176 84056 3958 3864 3142177 84566 3971 3789 3519178 85016 3782 3695 3318179 85569 3933 3808 3418180 86042 4034 3695 3318181 86523 4046 3713 3167182 87056 3720 3487 3242183 87526 4097 3676 3418184 88028 3607 3657 3167185 88541 3971 3732 2966186 89084 3707 3468 3242187 89546 3720 3280 3041188 90046 3883 3619 3418189 90586 3933 3563 3192190 91056 3870 3299 3418191 91584 4097 3676 3493192 92074 3883 3318 3192193 92566 4009 3525 3142194 93084 4097 3798 3418195 93546 3933 3544 3167196 94053 3594 3676 3318197 94586 4034 3695 3544198 95046 3958 3318 2915199 95562 4222 3487 3242200 96082 3632 3252 3028201 96503 3933 3468 2865202 97021 4172 3751 3418203 97562 3896 3713 2915204 98046 3958 3525 2865205 98575 3695 3563 3167

298531422859245025452733257629852953279625762608289021682639267030163079273332043189301628902969292232363016295329062702298526392890295327963330270226703079226227022890





Page 82





206 99079 3883 3318 3091207 99532 3958 3223 3116208 100048 3757 3487 3318209 100536 4084 3506 3368210 101054 3933 3525 3041211 101545 3971 3676 3167212 102089 3720 3525 3142213 102551 3493 3468 2915214 103047 4134 3676 3418215 103516 3607 3346 2865216 104085 3594 3468 3066217 104523 2978 2941 2890218 105052 3079 2752 2639219 105562 2840 3110 3418220 106023 3720 3167 3192221 106513 3217 2648 2136222 107045 3581 2733 3167223 107547 2903 2752 2161224 108098 3192 2941 3318225 108522 3318 2752 2966226 109068 3192 2564 2991227 109545 3569 3412 3167228 110011 3217 3110 3142229 110564 3556 3487 2639230 111029 3305 3280 3142231 111564 3720 3468 3468232 112088 3732 3261 3217233 112575 4034 3695 3544234 113058 4159 3506 3468235 113514 4185 3223 3594236 114007 4134 3412 3795237 114501 4159 3487 3695238 115001 4210 3563 3594239 115508 4134 3789 3443240 116015 4185 3902 3544241 116515 4122 3826 3745242 117006 3883 3977 3091243 117506 4059 4128 3343244 118006 4147 4166 3418245 118522 3858 3996 3091246 119015 3921 3921 2840247 119533 3984 4053 2966

295327023016282726702639273326392985307920422073201128901948204216962450289030162325238828592388219924822639304726702576285931423047295326702576304731102733254527652827





Page 83





248 120035 3808 3977 3041249 120538 3996 4166 3217250 121008 4059 4298 3368251 121501 3971 4241 3217252 122055 4059 4317 3041253 122535 3870 4109 2915254 123035 2199 3789 2488255 123522 2111 1923 2237256 124005 2086 1979 1860257 124505 1985 1470 1709258 125005 2111 1640 1860259 125535 2450 2959 3318260 126012 2538 3449 3418261 126505 2413 3374 3292262 127012 2551 3449 3443263 127511 2702 3581 3569264 128005 2777 3713 3619265 128505 2689 3864 3267266 129010 2652 3940 3569267 129504 2677 4203 3493268 130010 2853 4317 3695269 130510 2953 4222 3343270 131010 3016 4090 3116271 131514 2915 4034 2991272 132007 2865 3940 3091273 132507 2903 4034 3343274 133012 3003 4090 3443275 133508 3028 4185 3544276 134008 3054 4279 3443277 134515 3116 4203 3569278 135022 3054 3902 5554279 135522 2991 4034 3142280 136004 3041 6164 4147281 136508 4185 3223 3594282 137005 4134 3412 3795283 137505 4159 3487 3695284 138013 4210 3563 3594285 138506 4134 3789 3443286 139013 4185 3902 3544287 139504 4134 3789 3443288 140015 4185 3902 3544289 140508 4122 3826 3745

279628592890285929853173276524502608185426702796289025762608245028272450279625452890254522932356251326082859

30472953

3676395844612576

2576

267029532670

28593142

3519

27652827





Page 84





290 141018 4159 3789 3393291 141503 4210 3921 3594292 142011 4109 5843 3644293 142519 4159 3977 4197294 143007 4059 4317 3041295 143517 3870 4109 2915296 144010 3632 4203 2790297 144514 3682 4015 2941298 145048 3745 3977 3041299 145511 3782 3883 2966300 146013 3870 4109 2915301 146511 2199 3789 2488302 147005 2111 1923 2237303 147507 2086 1979 1860304 148005 1985 1470 1709305 148507 2111 1942 1860306 149035 2551 3449 3443307 149515 2702 3581 3569308 150009 2777 3713 3619309 150502 2689 3864 3267310 151010 2652 3940 3569311 151512 2677 4203 3493312 152003 2853 4317 3695313 152508 2953 4222 3343314 153008 2777 3713 3619315 153503 2689 3864 3267316 154025 2652 3940 3569317 154513 2677 4203 3493318 155009 2551 3449 3443319 155502 2702 3581 3569320 156003 2739 2187 2538321 156507 2526 1866 2212322 157012 1282 1678 1960323 157515 2388 2677 1910324 158001 2476 2714 2262325 158497 2576 2450 1960326 159004 2626 2677 2237327 159511 2802 2620 2036328 160004 2388 2677 3142329 160515 1458 1904 4398330 161010 1244 1659 4222331 161510 1118 1470 5404 5969

6754684963153204

6943672366296692

4995549852786754

2450279625452608

2545289025452827

2450282724502796

2608185426702608

2859317327652450

3173304731102922

26082985

298528592450





Page 85





332 162025 1784 1433 5554333 162506 1734 1621 4499334 163001 1608 1791 4247335 163524 1671 2262 3393336 164013 2331 2846 3217337 164509 2237 2818 3104338 165035 2507 2686 3217339 165511 2174 2300 2551340 166003 3946 3506 3418341 166503 3707 3468 3116342 167057 3908 3563 2815343 167507 3833 3487 3167344 168007 3971 3619 3066345 168509 4059 3487 3217346 169003 3066 2846 2614347 169518 3368 2432 2362348 170001 2532 2893 2702349 170516 3418 3025 3217350 171016 2790 3798 1910351 171522 2897 2903 2551352 172011 3713 3987 4662353 172511 2997 3779 3242354 173011 3160 4628 4084355 173505 3305 4590 4046356 174005 4115 4656 3204357 174514 2564 3553 3154358 175014 3475 2903 3594359 175503 2438 3223 3192360 176031 2551 3261 2576361 176524 2884 3449 3066362 177024 3148 4684 3343363 177506 2432 2394 2551364 178002 2494 2535 2576365 178502 2318 3346 2476366 179002 3186 3987 3858367 179527 2865 3798 4285368 180048 3789 4967 3921369 180518 3211 3091 3795370 181018 3826 4326 5165371 181518 3286 4411 4084372 182008 3695 4731 5290373 182508 2871 4072 4122

5152309444773848

1712326746183424

3283212128902419

3094248226393016

3094463425292655

1806257638962733

2372161831262450

46813189

562361895027

3157309430472985

279628593173

26392953





Page 86





374 183018 3462 4006 4046375 183518 3167 4543 5064376 184037 2438 2912 2576377 184528 2934 3921 4034378 185028 3179 4628 3971379 185515 2438 2761 3318380 186015 2859 2526 2476381 186515 2582 3431 2488382 187015 3217 4562 3996383 187517 4115 4505 4964384 188017 3443 3695 3619385 188517 3054 3883 3368386 189017 3274 3412 3870387 189519 2909 3204 3845388 190021 3544 3958 3757389 190521 3072 3506 3695390 191021 3632 4354 3946391 191521 3908 5165 5919392 192021 4040 3874 3594393 192521 2859 3478 3996394 193018 3123 4741 3343395 193518 2438 2912 3255396 194018 3104 4251 3971397 194518 3663 3921 3958398 195018 2739 2941 3569399 195538 2161 2535 2702400 196016 2915 3374 3581401 196516 2488 2799 3280402 197012 3544 3977 4021403 197512 3211 2875 3493404 198012 2922 2780 3368405 198509 2375 2036 2450406 199009 3091 2535 3242407 199509 2111 2799 2601408 200009 2985 3063 3192409 200513 2300 2941 3431410 201013 1816 2121 2438411 201516 1910 2460 1985412 202016 1879 2271 1960413 202516 1533 1536 1898414 203025 1640 1838 2036415 203504 1294 1791 1709416 204028 993 971 1181

14921272

2529223116182073

3047322032832073

3047315728901838

3094304732204524

3236342445243204

4728425743203990

3409386431893236

32204461

331448074257

3864326726392953

2922472826393990





Page 87


GAIL (India) Ltd. Chhainsa-Gurgaon-Jhajjar-Hissar Gas Pipeline Project Chhainsa - Hissar Section Soil Corrosion Survey Report


Page 75 of 132


CGJHPL-S06-J00-001_0A THEO-DESH CONSULTANTS

ANNEXURES

Page 76 of 132



SOIL RESISTIVITY TEST RESULTS

Page 77 of 132



SOIL RESISTIVITY TEST RESULTS AT A GLANCE

Page 78 of 132



HISTOGRAM

Page 79 of 132



FOREIGN PIPELINE DATA

Page 80 of 132

LOCATION NUMBER

CHAINAGE POINTS(IN METRES)

:

:

:

SURVEY AGENCY

:

SHEE

T N

O :

1

1/14

RESISTIVITY @ 100.0 CMIN ohm-cm




REV.DRAWING NO.SCALE

AS SHOWN

PROJECT

FROM

SECTION

SOIL RESISTIVITY CURVEDWG. TITLE

SHEET :

PROJENGRREVISIONSDATENO. APPDBY CHKD

THEODESH CONSULTANTSVADODARA-390005

REFERENCE DRAWINGS

PIPELINE ROUTE MAP (1:50,000)

SOIL RESISTIVITY REPORT

DRAWING TITLE DRAWING NO

0A

CGJHPL-S06-J00-001

CHHAINSA-GURGAON-JHAJJAR-HISSAR GAS PIPELINE

B-35-36, Sector-I , NOIDA - 201 301

GAIL (India) Limited.GAIL

0A 05.12.07 ISSUED FOR CLIENT APPROVAL AP AM

TO

SCALE :HORIZONTAL 1:25000 VERTICAL 1:200 ohm-cm

SOIL RESISTIVITY @ 100.00 CM DEPTH FROM G.L.




1822

6.00

1

1985

480.

002

2212

985.

003

2199

1505

.00

4

2073

2011

.00

5

2086

2507

.00

6

2042

3009

.00

7

2350

3511

.00

8

1822

4014

.00

9

2073

4510

.00

10

1960

5012

.00

11

1458

5480

.00

12

2099

5900

.00

13

2488

6480

.00

14

2865

6980

.00

15

2940

7513

.00

16

3091

8011

.00

17

3606

8509

.00

18

3468

8910

.00

19

3493

9550

.00

20

3606

1002

0.00

21

2953

1050

9.00

22

3330

1101

5.00

23

3619

1151

0.00

24

3506

1200

7.00

25

3632

1251

0.00

26

3619

1300

5.00

27

2362

1350

8.00

28

3468

1401

3.00

29

3619

1450

8.00

30

3355

1501

7.00

31

2300

2111

2375

2073

1470

1621

1282

2337

1678

1263

1838

2582

2695

3317

3562

3355

3581

3732

3440

3562

3299

2733

3506

3487

3562

3600

3355

3110

3487

3072

3562

1885

1634

1960

1634

1407

1081

1357

1433

1131

1407

1131

1910

2237

2739

3393

3317

3443

3393

3167

3368

3644

3142

3644

3393

3368

3418

3644

3217

3921

3644

3669

1414

1759

2011

1414

1131

1037

1005

1068

942

1618

1068

1728

1068

2105

2765

3047

2733

2388

2796

3016

2953

2827

2450

3204

2482

3110

2953

1759

3204

3110

3864

0

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

3200

3400

3600

3800

4000

CGJHPL-P91-J00-001

001 of 014

CHHAINSA-HISSAR

0.01 km 15.02 km

CGJHPL-S17-J00-001

Page 81 of 132

LOCATION NUMBER


:

:

:

SURVEY AGENCY

:

SHEE

T N

O :

2

2/14






AS SHOWN

PROJECT

FROM

SECTION


SHEET :



REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3355

1501

7.00

31

2476

1552

2.00

32

3368

1601

8.00

33

2915

1652

1.00

34

1747

1701

9.00

35

1571

1749

0.00

36

2947

1790

0.00

37

3079

1841

6.00

38

2237

1902

5.00

39

3217

1952

2.00

40

2438

2001

8.00

41

3355

2053

4.00

42

2940

2098

5.00

43

2702

2152

4.00

44

1659

2201

4.00

45

1282

2255

5.00

46

1527

2303

2.00

47

1910

2352

5.00

48

2777

2407

7.00

49

3079

2452

7.00

50

3330

2503

4.00

51

3217

2556

5.00

52

2940

2604

4.00

53

3606

2657

8.00

54

3493

2706

5.00

55

2350

2756

3.00

56

3217

2800

8.00

57

2099

2854

5.00

58

2903

2906

4.00

59

3217

2951

6.00

60

3079

3004

8.00

61

3562

3110

3676

3167

5410

2940

3148

3562

2733

3713

3110

3431

2940

3525

1828

1621

1564

1536

2959

3148

3562

3506

3449

2507

1744

1461

1941

2884

3431

3299

3317

3669

3116

3544

3167

4197

3393

3644

3116

3368

3569

3066

3669

3292

3066

1684

1659

1470

1797

3468

3116

3669

3921

3569

1897

1634

1583

1420

1910

2614

3569

3368

3864

2922

3079

2733

3990

2733

2765

2105

3047

2639

2733

3142

2733

2670

1477

1367

1194

1178

2073

2325

3267

2765

2953

1665

1461

1288

1602

1225

1634

1853

2356

0

300

600

900

1200

1500

1800

2100

2400

2700

3000

3300

3600

3900

4200

4500

4800

5100

5400

5700

CGJHPL-P91-J00-001

002 of 014

CHHAINSA-HISSAR

15.02 km 30.05 km

CGJHPL-S17-J00-002

Page 82 of 132

LOCATION NUMBER


:

:

:

SURVEY AGENCY

:

SHEE

T N

O :

3

3/14






AS SHOWN

PROJECT

FROM

SECTION


SHEET :



REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3079

3004

8.00

61

2073

3052

8.00

62

3569

3107

6.00

63

3079

3151

0.00

64

3820

3202

5.00

65

3870

3253

6.00

66

3317

3305

3.00

67

3079

3358

5.00

68

3594

3402

6.00

69

2940

3452

4.00

70

3217

3505

8.00

71

3795

3553

4.00

72

3217

3603

6.00

73

4298

3657

8.00

74

3079

3705

1.00

75

3217

3756

2.00

76

4109

3804

6.00

77

3858

3857

8.00

78

3833

3903

6.00

79

4034

3956

7.00

80

4059

4003

7.00

81

3808

4052

5.00

82

3355

4102

7.00

83

3933

4154

7.00

84

3355

4206

7.00

85

3468

4251

0.00

86

3808

4303

8.00

87

3468

4357

4.00

88

3833

4405

2.00

89

3958

4458

3.00

90

3619

4501

7.00

91

4989

4516

4.00

9259

4445

219.

0093

3317

2733

3676

3110

3902

4618

3374

3506

4166

3299

3562

5410

3487

4354

3355

3468

3487

3638

3845

3468

4222

4354

3562

3676

3374

3713

4166

3468

3676

3562

4448

8435

4807

3368

3142

3720

3116

3368

3644

3518

3317

3493

3393

3343

3644

3368

3292

3569

3267

3142

3544

3443

3167

3443

3393

3292

3393

3041

3317

3418

3242

3317

3343

3292

4021

7791

2356

2607

2953

2670

3142

3267

2922

2639

2922

2482

3047

2796

1853

2796

2639

2482

2670

2922

3047

2922

2702

2953

2639

2827

2670

2984

2953

2859

2953

3173

2937

3456

6754

0

400

800

1200

1600

2000

2400

2800

3200

3600

4000

4400

4800

5200

5600

6000

6400

6800

7200

7600

8000

8400

8800

CGJHPL-P91-J00-001-002

003 of 014

CHHAINSA-HISSAR

30.05 km 45.22 km

CGJHPL-S17-J00-003

Page 83 of 132

LOCATION NUMBER


:

:

:

SURVEY AGENCY

:

SHEE

T N

O :

4

4/14






AS SHOWN

PROJECT

FROM

SECTION


SHEET :



REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






5944

4521

9.00

93

6226

4536

5.00

9442

1045

472.

0095

5906

4569

1.00

96

6786

4612

4.00

97

7288

4650

7.00

98

7037

4701

1.00

9950

8947

097.

0010

061

3847

210.

0010

146

7547

285.

0010

2

3632

4756

8.00

103

3694

4803

3.00

104

3946

4851

2.00

105

3895

4908

9.00

106

3456

4956

6.00

107

3958

5005

6.00

108

3971

5053

2.00

109

3456

5102

3.00

110

3720

5156

6.00

111

4034

5207

4.00

112

3958

5250

9.00

113

3694

5301

2.00

114

3908

5354

1.00

115

3946

5403

3.00

116

3657

5456

2.00

117

3795

5502

9.00

118

3908

5550

6.00

119

3468

5607

4.00

120

3732

5654

1.00

121

3958

5708

9.00

122

3908

5756

3.00

123

3694

5802

6.00

124

3921

5856

3.00

125

4097

5901

3.00

126

3223

5955

3.00

127

3305

6002

9.00

128

4807

9142

1734

1

1856

6

1894

3

1545

6

1828

411

309

7728

6117

3487

3600

2771

3487

3185

3713

3958

2969

3487

3864

3694

3487

3091

3054

3431

3110

3487

3242

3676

3487

3732

3110

3317

3299

3091

3185

7791

1520

518

095

2312

1

2802

2

3166

6

2362

413

697

7288

3770

3192

3518

3217

3317

2890

3317

3493

3142

2915

3468

3142

3116

3066

2966

3142

2815

3343

2815

3142

3167

3418

3317

3167

3418

2915

3921

6754

1319

424

975

2466

1

3864

0

4068

2

3125

815

865

9110

4869

2482

2670

2545

2953

2042

2859

2922

2388

2042

3204

2670

2388

3016

2545

2450

2042

3016

2168

2545

2576

2670

2136

2482

2670

2450

2953

0

1900

3800

5700

7600

9500

11400

13300

15200

17100

19000

20900

22800

24700

26600

28500

30400

32300

34200

36100

38000

39900

41800

CGJHPL-P91-J00-002

004 of 014

CHHAINSA-HISSAR

45.22 km 60.03 km

CGJHPL-S17-J00-004

Page 84 of 132

LOCATION NUMBER


:

:

:

SURVEY AGENCY

:

SHEE

T N

O :

5

5/14






AS SHOWN

PROJECT

FROM

SECTION


SHEET :



REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3305

6002

9.00

128

3958

6053

2.00

129

3380

6105

6.00

130

3958

6152

3.00

131

3971

6205

9.00

132

3380

6253

4.00

133

3946

6305

9.00

134

3958

6358

7.00

135

3657

6405

1.00

136

3946

6451

2.00

137

3958

6502

9.00

138

3908

6558

1.00

139

3732

6605

2.00

140

2752

6655

2.00

141

2501

6704

6.00

142

3833

6758

4.00

143

3594

6805

9.00

144

3845

6857

1.00

145

3996

6902

3.00

146

3946

6958

1.00

147

3833

7005

6.00

148

3606

7052

6.00

149

3921

7105

6.00

150

3317

7152

6.00

151

3789

7208

9.00

152

3921

7256

6.00

153

3908

7301

3.00

154

3745

7352

6.00

155

3921

7405

6.00

156

4285

7452

6.00

157

3908

7502

6.00

158

3185

3167

3676

3657

3732

3487

3562

3732

3657

3789

3468

3694

3468

2978

2969

3355

3694

3299

3317

3110

3487

3251

3468

3713

3487

3110

3694

3110

3468

3958

3694

3921

3694

3418

3581

3317

3091

3544

3167

2890

2991

3167

3116

2966

3066

2438

2890

2915

3167

3267

3343

2915

3142

2865

3142

2890

3242

3167

3644

3167

3493

3167

2953

2796

2670

2796

3016

2545

2984

2890

2733

2670

2545

2356

2545

3126

2953

2325

2670

2482

2168

2733

2639

2262

2733

2011

3079

2670

3110

2796

2733

2953

2984

0

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

3200

3400

3600

3800

4000

4200

4400

CGJHPL-P91-J00-002-003

005 of 014

CHHAINSA-HISSAR

60.03 km 75.03 km

CGJHPL-S17-J00-005

Page 85 of 132

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REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3908

7502

6.00

158

3958

7558

2.00

159

4222

7603

8.00

160

3594

7652

2.00

161

3958

7702

6.00

162

4285

7758

6.00

163

4222

7805

5.00

164

4034

7853

2.00

165

3933

7905

6.00

166

4097

7957

2.00

167

4335

8005

9.00

168

3933

8054

6.00

169

4210

8105

9.00

170

3908

8155

6.00

171

4109

8204

1.00

172

4097

8251

3.00

173

3808

8309

6.00

174

3707

8351

8.00

175

3958

8405

6.00

176

3971

8456

6.00

177

3782

8501

6.00

178

3933

8556

9.00

179

4034

8604

2.00

180

4046

8652

3.00

181

3720

8705

6.00

182

4097

8752

6.00

183

3606

8802

8.00

184

3971

8854

1.00

185

3707

8908

4.00

186

3720

8954

6.00

187

3883

9004

6.00

188

3694

3657

3996

3544

3110

3713

3732

3487

4015

3487

4034

3789

3694

3676

3713

3694

3468

3657

3864

3789

3694

3808

3694

3713

3487

3676

3657

3732

3468

3280

3619

3167

3242

2991

2815

2890

3493

3644

3569

3418

3242

3041

3242

3167

3317

3418

3217

3493

3167

3142

3518

3317

3418

3317

3167

3242

3418

3167

2966

3242

3041

3418

2984

2356

2545

2639

3047

2890

2984

3142

2859

2450

2545

2733

2576

2984

2953

2796

2576

2607

2890

2168

2639

2670

3016

3079

2733

3204

3189

3016

2890

2969

2922

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

2750

3000

3250

3500

3750

4000

4250

4500

CGJHPL-P91-J00-003

006 of 014

CHHAINSA-HISSAR

75.03 km 90.05 km

CGJHPL-S17-J00-006

Page 86 of 132

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REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3883

9004

6.00

188

3933

9058

6.00

189

3870

9105

6.00

190

4097

9158

4.00

191

3883

9207

4.00

192

4009

9256

6.00

193

4097

9308

4.00

194

3933

9354

6.00

195

3594

9405

3.00

196

4034

9458

6.00

197

3958

9504

6.00

198

4222

9556

2.00

199

3632

9608

2.00

200

3933

9650

3.00

201

4172

9702

1.00

202

3895

9756

2.00

203

3958

9804

6.00

204

3694

9857

5.00

205

3883

9907

9.00

206

3958

9953

2.00

207

3757

1000

48.0

020

8

4084

1005

36.0

020

9

3933

1010

54.0

021

0

3971

1015

45.0

021

1

3720

1020

89.0

021

2

3493

1025

51.0

021

3

4134

1030

47.0

021

4

3606

1035

16.0

021

5

3594

1040

85.0

021

6

2978

1045

23.0

021

7

3079

1050

52.0

021

8

3619

3562

3299

3676

3317

3525

3798

3544

3676

3694

3317

3487

3251

3468

3751

3713

3525

3562

3317

3223

3487

3506

3525

3676

3525

3468

3676

3346

3468

2940

2752

3418

3192

3418

3493

3192

3142

3418

3167

3317

3544

2915

3242

3028

2865

3418

2915

2865

3167

3091

3116

3317

3368

3041

3167

3142

2915

3418

2865

3066

2890

2639

2922

3236

3016

2953

2906

2702

2984

2639

2890

2953

2796

3330

2702

2670

3079

2262

2702

2890

2953

2702

3016

2827

2670

2639

2733

2639

2984

3079

2042

2073

2011

0

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

3200

3400

3600

3800

4000

4200

4400

CGJHPL-P91-J00-003

007 of 014

CHHAINSA-HISSAR

90.05 km 105.05 km

CGJHPL-S17-J00-007

Page 87 of 132

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REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3079

1050

52.0

021

8

2840

1055

62.0

021

9

3720

1060

23.0

022

0

3217

1065

13.0

022

1

3581

1070

45.0

022

2

2903

1075

47.0

022

3

3192

1080

98.0

022

4

3317

1085

22.0

022

5

3192

1090

68.0

022

6

3569

1095

45.0

022

7

3217

1100

11.0

022

8

3556

1105

64.0

022

9

3305

1110

29.0

023

0

3720

1115

64.0

023

1

3732

1120

88.0

023

2

4034

1125

75.0

023

3

4159

1130

58.0

023

4

4184

1135

14.0

023

5

4122

1140

07.0

023

6

3883

1145

01.0

023

7

4059

1150

01.0

023

8

4147

1155

08.0

023

9

3858

1160

15.0

024

0

3921

1165

15.0

024

1

3983

1170

06.0

024

2

3808

1175

06.0

024

3

3996

1180

06.0

024

4

4059

1185

22.0

024

5

3971

1190

15.0

024

6

4059

1195

33.0

024

7

3870

1200

35.0

024

8

2752

3110

3167

2648

2733

2752

2940

2752

2563

3412

3110

3487

3280

3468

3261

3694

3506

3902

3826

3977

4128

4166

3996

3921

4053

3977

4166

4298

4241

4316

4109

2639

3418

3192

2136

3167

2161

3317

2966

2991

3167

3142

2639

3142

3468

3217

3544

3468

3544

3745

3091

3343

3418

3091

2840

2966

3041

3217

3368

3217

3041

2915

2011

2890

1948

2042

1696

2450

2890

3016

2325

2388

2859

2388

2199

2482

2639

3047

2670

2749

2576

3047

3110

2733

2545

2765

2827

2796

2859

2890

2859

2984

3173

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

2750

3000

3250

3500

3750

4000

4250

4500

CGJHPL-P91-J00-003-004

008 of 014

CHHAINSA-HISSAR

105.05 km 120.04 km

CGJHPL-S17-J00-008

Page 88 of 132

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REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3870

1200

35.0

024

8

2199

1205

38.0

024

9

2111

1210

08.0

025

0

2086

1215

01.0

025

1

1985

1220

55.0

025

2

2111

1225

35.0

025

3

2450

1230

35.0

025

4

2538

1235

22.0

025

5

2413

1240

05.0

025

6

2551

1245

05.0

025

7

2702

1250

05.0

025

8

2777

1255

35.0

025

9

2689

1260

12.0

026

0

2651

1265

05.0

026

1

2677

1270

12.0

026

2

2852

1275

11.0

026

3

2953

1280

05.0

026

4

3016

1285

05.0

026

5

2915

1290

10.0

026

6

2865

1295

04.0

026

7

2903

1300

10.0

026

8

3003

1305

10.0

026

9

3028

1310

10.0

027

0

3054

1315

14.0

027

1

3116

1320

07.0

027

2

3054

1325

07.0

027

3

2991

1330

12.0

027

4

3041

1335

08.0

027

5

4184

1340

08.0

027

6

4134

1345

15.0

027

7

4159

1350

22.0

027

8

4109

3789

1923

1979

1470

1640

2959

3449

3374

3449

3581

3713

3864

3939

4203

4316

4222

4090

4034

3939

4034

4090

4184

4279

4203

3902

4034

6164

3223

3412

3487

2915

2488

2237

1860

1709

1860

3317

3418

3292

3443

3569

3619

3267

3569

3493

3694

3343

3116

2991

3091

3343

3443

3544

3443

3569

5554

3142

4147

3594

3795

3694

3173

2765

2450

2607

1853

2670

2796

2890

2576

2607

2450

2827

2450

2796

2545

2890

2545

2293

2356

2513

2607

2859

2765

2827

3518

3676

3958

4461

2576

2859

3142

0

300

600

900

1200

1500

1800

2100

2400

2700

3000

3300

3600

3900

4200

4500

4800

5100

5400

5700

6000

6300

CGJHPL-P91-J00-004

009 of 014

CHHAINSA-HISSAR

120.04 km 135.02 km

CGJHPL-S17-J00-009

Page 89 of 132

of 132

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REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






2953

1500

09.0

030

8

2777

1505

02.0

030

9

2689

1510

10.0

031

0

2651

1515

12.0

031

1

2677

1520

03.0

031

2

2551

1525

08.0

031

3

2702

1530

08.0

031

4

2739

1535

03.0

031

5

2526

1540

25.0

031

6

1282

1545

13.0

031

7

2388

1550

09.0

031

8

2476

1555

02.0

031

9

2576

1560

03.0

032

0

2626

1565

07.0

032

1

2802

1570

12.0

032

2

2388

1575

15.0

032

3

1458

1580

01.0

032

4

1244

1584

97.0

032

5

1118

1590

04.0

032

6

1784

1595

11.0

032

7

1734

1600

04.0

032

8

1608

1605

15.0

032

9

1671

1610

10.0

033

0

2331

1615

10.0

033

1

2237

1620

25.0

033

2

2507

1625

06.0

033

3

2174

1630

01.0

033

4

3946

1635

24.0

033

5

3707

1640

13.0

033

6

3908

1645

09.0

033

7

3833

1650

35.0

033

8

4222

3713

3864

3939

4203

3449

3581

2186

1866

1678

2677

2714

2450

2677

2620

2677

1904

1659

1470

1433

1621

1791

2262

2846

2818

2686

2300

3506

3468

3562

3487

3343

3619

3267

3569

3493

3443

3569

2538

2212

1960

1910

2262

1960

2237

2036

3142

4398

4222

5403

5554

4499

4247

3393

3217

3104

3217

2551

3418

3116

2815

3167

2545

2827

2450

2796

2545

2607

4995

5498

5278

6754

6943

6723

6629

6691

6754

6848

6314

3204

5969

5623

6189

5026

4681

3189

3157

3094

3047

2984

2639

2953

2796

0

350

700

1050

1400

1750

2100

2450

2800

3150

3500

3850

4200

4550

4900

5250

5600

5950

6300

6650

7000

CGJHPL-P91-J00-005

011 of 014

CHHAINSA-HISSAR

150.01 km 165.04 km

CGJHPL-S17-J00-011

Page 91 of 132

LOCATION NUMBER


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SHEET :



REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3833

1650

35.0

033

8

3971

1655

11.0

033

9

4059

1660

03.0

034

0

3066

1665

03.0

034

1

3368

1670

57.0

034

2

2532

1675

07.0

034

3

3418

1680

07.0

034

4

2790

1685

09.0

034

5

2896

1690

03.0

034

6

3713

1695

18.0

034

7

2997

1700

01.0

034

8

3160

1705

16.0

034

9

3305

1710

16.0

035

0

4115

1715

22.0

035

1

2563

1720

11.0

035

2

3475

1725

11.0

035

3

2438

1730

11.0

035

4

2551

1735

05.0

035

5

2884

1740

05.0

035

6

3148

1745

14.0

035

7

2432

1750

14.0

035

8

2494

1755

03.0

035

9

2318

1760

31.0

036

0

3185

1765

24.0

036

1

2865

1770

24.0

036

2

3789

1775

06.0

036

3

3211

1780

02.0

036

4

3826

1785

02.0

036

5

3286

1790

02.0

036

6

3694

1795

27.0

036

7

2871

1800

48.0

036

8

3487

3619

3487

2846

2432

2893

3025

3798

2903

3987

3779

4627

4590

4656

3553

2903

3223

3261

3449

4684

2394

2535

3346

3987

3798

4967

3091

4326

4411

4731

4071

3167

3066

3217

2614

2362

2702

3217

1910

2551

4662

3242

4084

4046

3204

3154

3594

3192

2576

3066

3343

2551

2576

2476

3858

4285

3921

3795

5165

4084

5290

4122

2796

2859

3173

2372

1618

3126

2450

1806

2576

3895

2733

3094

4634

2529

2655

3094

2482

2639

3016

3283

2121

2890

2419

1712

3267

4618

3424

5152

3094

4477

3848

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

2750

3000

3250

3500

3750

4000

4250

4500

4750

5000

5250

5500

CGJHPL-P91-J00-005-006

012 of 014

CHHAINSA-HISSAR

165.04 km 180.05 km

CGJHPL-S17-J00-012

Page 92 of 132

LOCATION NUMBER


:

:

:

SURVEY AGENCY

:

SHEE

T N

O :

13

13/14






AS SHOWN

PROJECT

FROM

SECTION


SHEET :



REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






2871

1800

48.0

036

8

3462

1805

18.0

036

9

3167

1810

18.0

037

0

2438

1815

18.0

037

1

2934

1820

08.0

037

2

3179

1825

08.0

037

3

2438

1830

18.0

037

4

2859

1835

18.0

037

5

2582

1840

37.0

037

6

3217

1845

28.0

037

7

4115

1850

28.0

037

8

3443

1855

15.0

037

9

3054

1860

15.0

038

0

3273

1865

15.0

038

1

2909

1870

15.0

038

2

3544

1875

17.0

038

3

3072

1880

17.0

038

4

3632

1885

17.0

038

5

3908

1890

17.0

038

6

4040

1895

19.0

038

7

2859

1900

21.0

038

8

3123

1905

21.0

038

9

2438

1910

21.0

039

0

3104

1915

21.0

039

1

3663

1920

21.0

039

2

2739

1925

21.0

039

3

2161

1930

18.0

039

4

2915

1935

18.0

039

5

2488

1940

18.0

039

6

3544

1945

18.0

039

7

3211

1950

18.0

039

8

4071

4005

4543

2912

3921

4627

2761

2526

3431

4561

4505

3694

3883

3412

3204

3958

3506

4354

5165

3873

3478

4741

2912

4250

3921

2940

2535

3374

2799

3977

2874

4122

4046

5064

2576

4034

3971

3317

2476

2488

3996

4964

3619

3368

3870

3845

3757

3694

3946

5919

3594

3996

3343

3255

3971

3958

3569

2702

3581

3280

4021

3493

3848

2922

4728

2639

3990

3864

3267

2639

2953

3314

4807

4257

3220

4461

3409

3864

3189

3236

4728

4257

4320

3990

3236

3424

4524

3204

3094

3047

3220

4524

3047

0

300

600

900

1200

1500

1800

2100

2400

2700

3000

3300

3600

3900

4200

4500

4800

5100

5400

5700

6000

CGJHPL-P91-J00-006

013 of 014

CHHAINSA-HISSAR

180.05 km 195.02 km

CGJHPL-S17-J00-013

Page 93 of 132

LOCATION NUMBER


:

:

:

SURVEY AGENCY

:

SHEE

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O :

14

14/14






AS SHOWN

PROJECT

FROM

SECTION


SHEET :



REFERENCE DRAWINGS




0A

CGJHPL-S06-J00-001


B-35-36, Sector-I , NOIDA - 201 301



TO






3211

1950

18.0

039

8

2922

1955

38.0

039

9

2375

1960

16.0

040

0

3091

1965

16.0

040

1

2111

1970

12.0

040

2

2984

1975

12.0

040

3

2300

1980

12.0

040

4

1816

1985

09.0

040

5

1910

1990

09.0

040

6

1879

1995

09.0

040

7

1533

2000

09.0

040

8

1640

2005

13.0

040

9

1294

2010

13.0

041

0

993

2015

16.0

041

1

1030

2020

16.0

041

2

817

2025

16.0

041

3

792

2030

25.0

041

4

635

2035

04.0

041

5

861

2040

28.0

041

6

2874

2780

2036

2535

2799

3063

2940

2121

2460

2271

1536

1838

1791

971

782

745

839

914

999

3493

3368

2450

3242

2601

3192

3431

2438

1985

1960

1897

2036

1709

1181

905

880

917

1043

1030

3047

3157

2890

1838

3047

3220

3283

2073

2529

2230

1618

2073

1492

1272

1100

817

1052

1084

1162

0

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

3200

3400

3600

CGJHPL-P91-J00-006

014 of 014

CHHAINSA-HISSAR

195.02 km 204.03 km

CGJHPL-S17-J00-014

Page 94 of 132

1 2 3 4 5 6 7 8 9 10 11 12

13

14

15

16

17

18 19 20 21 22

IN (OHM-M)

CHAINAGE POINTS

LOCATION NUMBER

(IN METRES)

RESISTIVITY @ 2.5 M.

RESISTIVITY @ 1.5 M.

VERTICAL 1:100 M

HORIZONTAL 1:25000

SCALE

IN (OHM-M)

DATUM :

RESISTIVITY IN OHM METRES

SHEET NO : 01

REVISION

AS SHOWN

TITLE:-

SCALE

PROJECT :

NO. DATE

0

DRAWING NO.

GAIL/SKP/TRANSCO/2007/GRAPH1

REV.

BY CHKD. APPD. PROJ.ENGR.

FROM:-

10.0

11.0

12.0

13.0

18.0

15.0

14.0

16.0

17.0

19.0

20.0

0

23

24

25

26

27

28

29

30 31 32

33

34

35

36

37

38

39

500.0

1000.0

3.0

2500.0

1500.0

3000.0

2000.0

4000.0

4500.0

3500.0

5500.0

5000.0

6000.0

5436.0

6500.0

7500.0

7000.0

9000.0

8000.0

9500.0

8500.0

10000.0

11000.0

10500.0

12500.0

11500.0

12000.0

13000.0

13500.0

17000.0

15500.0

15000.0

14500.0

14000.0

16500.0

16000.0

17691.0

17500.0

18069.0

19.643

20.428

27.971

30.642

24.042

21.371

20.742

28.914

19.014

13.514

22.157

11.786

29.228

26.242

19.171

25.457

25.300

36.928

38.814

19.643

24.985

23.257

21.057

35.261

17.914

23.100

19.800

19.328

18.071

17.914

21.371

16.500

19.328

19.014

19.014

14.928

19.800

17.128

18.385

22.250

27.718

25.550

41.106

24.513

33.092

36.204

33.469

21.213

27.813

32.527

27.247

29.698

43.086

35.072

44.689

33.375

48.271

49.308

42.520

43.463

30.735

45.914

35.261

36.298

44.029

29.415

24.136

36.204

32.715

42.992

27.058

28.001

37.429

45.537

35.921

20.270

33.375

41.106

40.0

50.0

21.0

22.0

23.0

24.0

25.0

26.0

27.0

28.0

29.0

30.0

31.0

32.0

33.0

34.0

35.0

36.0

37.0

38.0

39.0

41.0

42.0

43.0

44.0

45.0

46.0

47.0

48.0

49.0

Ph.No. (0265) 2641059, 6595047 Fax. No. 2641059Makarpura Road, Vadodara-390 009C-43,44, Rishi Enclave, Opp. O.N.G.C. Office,

( A. Govt of India Undertaking )

08/09/07 RajendraThakur

AshokKanaujia

CONTRACTOR:

(AN ISO 9001:2000 CERTIFIED COMPANY)

AG I L

GAIL (INDIA) LIMITED

NOIDA

CLIENT:

Page 95 of 132

TRANSCO POWER PLANT AT BAMNAULI CONNECVITY PROJECT

Location ChainageNo. Km' 1.5 2.51 0+003.00 27.718 20.4282 0+500.00 22.250 19.6433 1+000.00 25.550 27.9714 1+500.00 24.513 24.0425 2+000.00 36.204 20.7426 2+500.00 41.106 30.6427 3+000.00 33.092 21.3718 3+500.00 27.813 19.0149 4+000.00 33.469 28.91410 4+500.00 21.213 13.51411 5+000.00 27.247 11.78612 5+436.52 29.698 26.24213 5+500.00 32.527 22.15714 6+000.00 43.086 29.22815 6+500.00 35.072 19.17116 7+000.00 33.375 25.30017 7+500.00 44.689 25.45718 8+000.00 49.308 38.81419 8+500.00 43.463 24.98520 9+000.00 48.271 36.92821 9+500.00 42.520 19.64322 10+000.00 30.735 23.25723 10+500.00 35.261 35.26124 11+000.00 45.914 21.05725 11+500.00 44.029 14.91426 12+000.00 29.415 19.80027 12+500.00 36.298 23.10028 13+000.00 24.136 19.32829 13+500.00 37.429 18.07130 14+000.00 45.537 19.01431 14+500.00 35.921 19.32832 15+000.00 42.992 16.500

Soil Resistivity Test Results

Resistivity (OHM-M)

GAIL (India) LIMITED

Soil Resistivity Survey Report

SKP PROJECTS PVT. LTD.14

Page 96 of 132

33 15+500.00 32.715 21.37134 16+000.00 20.270 14.92835 16+500.00 27.058 19.01436 17+000.00 36.204 17.91437 17+500.00 28.001 17.12838 17+691.25 33.375 19.80039 18+069.00 41.106 18.385

SKP PROJECTS PVT. LTD.14

Page 97 of 132

GAIL (India) LIMITED Transco Power Plant at Bamnauli Connectivity Project Soil Resistivity Survey Report

GAIL (India) LIMITED (A Government of India Undertaking)

VOLUME-II

Transco Power Plant at Bamnauli Connectivity Project

SOIL RESISTIVITY SURVEY REPORT

1. INTRODUCTION

The resistivity method in principle is based on resistivity contract rather than on

absolute resistivity values and the resistivity obtained by this method are average

values for large volumes of ground. Inspite of the widely varying resistivity values

that can be obtained from measurements on small values of a formation, its average

resistivity is usually nearly constant within areas of reasonable size if no change

occurs in the geologic faces or in the content of water.

The soil resistivity measurement shall be carried out at intervals of approximately

500 mtr. Along the ROU where soil resistivity is less than 100 ohm/mtr. And two

successive reading differ by more than 2:1 then additional soil resistivity readings in

between the two locations shall be taken.

The instrument used for measuring resistivity is DDR 3 resistivity meter. The

instrument was calibrated prior to starting of Soil Resistivity Survey work and

Calibration Test Report is enclosed along along with this report.

The locations where Soil resistivity have been taken are designated as test location

L1, L2 etc. Resistivity at various locations is measured for the pipelines accordingly.

In all Resistivity at approximately 39 locations along the route of pipeline have been

measured.

SKP PROJECT PVT. LTD., VADODARA

1Page 98 of 132

GAIL (India) LIMITED Transco Power Plant at Bamnauli Connectivity Project Soil Resistivity Survey Report 2. SCOPE

The specification covers the corrosion survey including measurement of soil resistivity

chemical analysis of soil/water and other Cathodic protection related data collection

along Right of Use (ROU)

3. MEASURING PRINCIPLE This Soil Resistivity at various depths viz. 1.5 and 2.5 mt. were measured. The

method for measuring Soil resistivity adopted by us is 4 Terminal Method popularly

known as Wenner Method.

In the Wenner arrangement for measurement of Resistivity, the four electrodes are

driven into ground at equal distance (D) when a small current is passed through outer

electrodes, a potential difference is set up between the inner pair, this potential is

measured on the Metre. Then it is compared with the potential drop across a known

resistance. The value of the resistance (R) giving the same potential drop is the

apparent resistance between the inner electrodes.

The Soil Resistivity (o) as per Wenner's principle is:

o = 2IIDR ... Ohm - cm.

Where D = Spacing between the electrodes in 'cm' &

R = Resistance of the soil at a depth of 'D' meter in Ohm.

4. METHODOLOGY EQUIPMENT USED: (i) DDR 3 Resistivity Meter 1 Set (ii) Current / Potential Electrodes 19 mm dia and 500mm long M.S. Roads 4 Nos.


2Page 99 of 132


(iii) Interconnecting Cable between meters and Current and potential electrodes.

4.1. GENERAL:

The IGIS DDR 3 is a Dc Resistivity Meter with several innovative features built into

Its design & is known for its high quality data acquisition capability as well as for its

Field worthiness .The DDR 3 Resistivity Meter is very compact, elegant & high

Reliable equipment, which can be deployed for resistivity as well as self-potential

Investigations.

The DDR Resistivity Meter consist of two units 1) Current Unit (C Unit) & 2

Potential Unit (P Unit). While the current serves unit the purposes of sending the

Required output of constant current, the potential unit provides accurate

Measurement & display of potential/resistance values directly over a liquid crystal

Display.

4.2. CALIBRATION OF THE INSTRUMENT

Before conducting the field measurements, the performance of the instrument is

tested/calibrated using the box provided by the manufacture. The test box has

known resistivity. In order to calibrate the instrument, the respective input and order

terminals are connected to known resistivity values in the test box. On passing the

current, if LCD of the instrument displays the connected resistance value, then the

instrument is correct and calibrated. This procedure is repeated for 20th

measurement.

4.3. CURRENT UNIT:

The Current Unit, working on a 24V-recharge battery delivery power in constant

Current mode. The maximum possible output is 80 watts, depending on voltage &

Current settings.


3Page 100 of 132

GAIL (India) LIMITED Transco Power Plant at Bamnauli Connectivity Project Soil Resistivity Survey Report 4.4. POTENTIAL UNIT: The has the facility to measure the potential difference across the potential

Electrodes, as also the resistance values & provides direct display over digital

Panel meter.

4.5 PANEL UNIT:

CURRENT UNIT:(C UNIT)

1. C1, C2 : Terminals for connecting current electrodes.

2. DIRECT/REVERSE : Switch to change the direction of the energizing.

Current.

3. CURRENT : Control to select appropriate current to the

ground. This has two sets of marking in RED

(10,2,1,0.5) & the other in BLACK

(10,50,100, 200,V/L).The numbers marked in

RED indicated the multiplication factor.

4. DISPLAY : To display the readouts resistance/potential

Values.

5. RANGE(1.0&0.1) : To select appropriate ‘RANGE’ for achieving

achieving necessary resolution in reading

resistance / potential values display on the P

display (15). This has two operating positions

1 & 0.1.

6. R & V switch : To change the potential unit to Direct Resistance

& voltage modes.


4Page 101 of 132

GAIL (India) LIMITED Transco Power Plant at Bamnauli Connectivity Project Soil Resistivity Survey Report 5. PROCEDURE

The field measurements for DC resistivity investigations basically involves sending a

known current into the ground through the current electrodes & observing

the across the Potential electrodes, to get the resistance values. The DDR 3

equipment has the facility to provide the operator the direct readout of these

resistance values on liquid crystal display. The operation of DDR 3 equipment

involves broadly (a) cancellation of S.P. & (b) sending a known amount of current

into the ground at appropriate voltages by adjusting the controls (3) & (4) &

observing the readouts of the resistance value on the display (16). To accomplish

this, the following operational steps are to be followed systematically, observing the

necessary precautions indicated.

5.1 OPERATION STEPS FOR MEASUREMENT OF DIRECT ‘R’ In this case the instrument works in constant current mode

1. Connect the terminal C1 & C2 (1) on the current unit to the current electrodes.

2. Connect the terminals P1&P2 (12) on the potential unit to the potential

electrodes.

3. Keep the DIRECT/REVERSE switch (2) in ‘Direct’ position.

4. Switch ‘ON’ the digital display switch (13) on P unit.

5. Switch ‘ON’ the S.P. switch (14) of the P unit.

6. Switch ‘ON’ the digital display switch (10) on the current.

7. Set the ‘P’ display (16) to read ‘000’ by suitably adjusting the S.P. coarse &

fine controls (15). This cancels the background self-potential across the

potential electrodes. Keep R&V switch in ‘R’ position.

8. Set the current control knob (3) of current unit in ‘1’ position (RED). In this

Position the sends 100, of current. (100, the number marked is black).

. The C-display should display the value of the current set on the current

Control (3), (i.e. for e.g. for setting ‘1’ it should read 100, for setting 2 it


5Page 102 of 132

GAIL (India) LIMITED Transco Power Plant at Bamnauli Connectivity Project Soil Resistivity Survey Report Should read 100, for setting 2 it should read 50 & so on, when the

Appropriate voltage is set on (14).

5.2 POTENTIAL UNIT: (P-UNIT)

1) P1, P2 : Terminals for connecting potential electrodes.

2) DISPLAY ‘ON’ : The switch to put ‘ON’ the digital display (p-display)

3) CANCEL S.P. : The switch to put ‘ON’ potential circuit. Facilities

cancellation of self potential with the help of

potentiometers (Coarse and Fine)

4) COARSE AND FINE : The two potentiometers on for coarse adjustment

and the other for fine adjustment for the purpose of

S.P. cancellation.

The resistivity was measured at every 500 mt. distance. The above measurements

were repeated for electrode spacing of 1.5 mt. & 2.5 mt. at every locations. The

readings obtained from the meter were used in calculation for soil resistivity as

described in methodology.

5.3 TEST RESULTS:

The test results are tabulated and enclosed in Table. The summary is also tabulated

and represented. The above test results are also represented in a graphical form

(Soil Resistivity Curves) with distance and locations indicated on X - axis and soil

resistivity indicated on Y - axis. Soil Resistivity at various depths indicated by means

of various soil resistivity curves.

6. GENERAL INSTRUCTIONS 1. The drawings show the soil resistivity at various locations marked at L1, L2.


6Page 103 of 132

GAIL (India) LIMITED Transco Power Plant at Bamnauli Connectivity Project Soil Resistivity Survey Report 2. 'X' axis represents chainage of various locations along the route and the scale

used is 1 cm = 500 mt .

3. 'Y' axis represents resistivity in ohm-cm and the scale used is 1 cm = 100 Ohm-

cm.

4. The curves shown join resistivity values at various depths and they do not

represent intermediate values in between the locations marked.

7. AGGRESSIVENESS OF SOILS

Before any system of cathodic protection can be designed, a few data are necessary.

These data pertain to the conditions existing on each location.

Soil can hold different moisture and thereby different dissolved salts. Increased

dissolved salts increase the conductivity of the soil, increased conductivity means

larger current for given potential difference, and therefore larger corrosion rate.

Specific conductivity is reciprocal of specific resistivity. Therefore soil resistivity gives a

fair measure of the corrosiveness in the manner indicated below :

Degree of Corrosivity of Soil

Low Normal Over normal High Very High

Soil 10,000 2,000 1,000 500 500

Resistivity and to to to And

In Om-cms. above 10,000 2,000 1,000 Less


7Page 104 of 132


If any pipeline is yet at a design stage, this survey helps in determining the

specifications of the coating material. If the soil is of high resistivity, an average

coating can be specified and in more corrosive soil, coating with very rigid

specification and of higher standards of workmanship is essential.

8. CONCULSIONS

The field tests indicate the aggressivencess of the soil in sections tabulated below:

Section Chainage (Km.) Aggressiveness of Soil

0.00 – 18.069 Normal to Overnormal

9. RECOMMENDATIONS

For the above conclusions it is recommended that for normal aggressiveness of the

soil within Ch. 0.00 – 18.069 Km. of pipe line the degree of corrosivity is less and

hence demands for normal cathodic protection.

FOR SKP PROJECTS PVT. LTD.

PROJECT DIRECTOR


8Page 105 of 132

S.N.O XING NO. TYPE OF XING METHODOLOGY CHAINAGE(m) XING WIDTH(m)

EXTRA

LENGTH

FOR

XING(m)

THK(mm) CLASSCLASS

ADOPTED

MIN. COVER

DEPTH (M)ALIGNMENT SHEET NO.

Start

LocationEnd Location

1.00 11-0230-00-07-01-501 PIPELINE NTPC OC 294.93 15.46 4 15.9 2 2 11-0230-00-07-01-101 TP-1 TP-2

2.00 11-0230-00-07-01-502 ASPHALTED ROAD ODR OC 301.14 15.46 4 15.9 2 2 1.5 11-0230-00-07-01-101 TP-1 TP-2

3.00 11-0230-00-07-01-503 ASPHALTED ROAD ODR OC 672.91 38.18 6 15.9 2 2 1.5 11-0230-00-07-01-101 IP-3/1 IP-3/2

4.00 11-0230-00-07-01-504NALA UNC CHAINSA DISTRIBUTARY

OC +CC 1201.80 21.36 6 15.9 2 2 1.5 11-0230-00-07-01-101 IP-5/1 IP-5/2

5.00 11-0230-00-07-01-505 ASPHALTED ROAD ODR OC 3681.07 5.93 4 15.9 1 2 1.5 11-0230-00-07-01-103 TP-11 IP-11/1


7.00 11-0230-00-07-01-507 UNC RAMPUR DISTRIBUTARY B+C 7671.86 20.66 6 19.1 2 3 1.5 11-0230-00-07-01-105 TP-20 IP-20/2


9.00 11-0230-00-07-01-509 METALLED ROAD B+C 9133.89 7.20 6 19.1 2 3 1.5 11-0230-00-07-01-106 TP-23 IP-23/1

10.00 11-0230-00-07-01-510 ASPHALTED ROAD ODR OC 9461.89 8.71 4 15.9 2 2 1.5 11-0230-00-07-01-106 IP-23/2 TP-24

11.00 11-0230-00-07-01-511 CANAL AGRA UNC HDD 10717.97 74 20 19.1 2 3 2.5 11-0230-00-07-01-107 IP-27/1 IP-27/2


13.00 11-0230-00-07-01-513 PIPELINE 12" NTP OC 11824.70 25.11 4 15.9 2 2 11-0230-00-07-01-107 IP-30/3 TP-31

14.00 11-0230-00-07-01-514 PIPELINE 18" GAIL OC 12218.10 15.00 4 15.9 2 2 11-0230-00-07-01-107 TP-32 TP-33

15.00 11-0230-00-07-01-515 PIPELINE 12" BPCL OC 12546.69 21.18 4 15.9 2 2 11-0230-00-07-01-108 IP-33/1 IP-33/2


17.00 11-0230-00-07-01-517 RAILWAY BG B+C 13762.31 33.99 6 15.9 1 2 1.8 11-0230-00-07-01-108 TP-36 TP-37



20.00 11-0230-00-07-01-520 NATIONAL HIGHWAY-2 B+C 17212.34 46.00 6 15.9 1 2 1.5 11-0230-00-07-01-110 IP-43/1 TP-44

21.00 11-0230-00-07-01-521 GAUNCHHI DRAIN OC +CC 20243.39 30.50 6 15.9 1 2 1.5 11-0230-00-07-01-112 IP-49/1 IP-49/2



24.00 11-0230-00-07-01-524 DHATIR DISTRIBUTARY UNC B+C 22032.45 15.90 6 19.1 3 3 1.5 11-0230-00-07-01-113 IP-52/1 IP-52/2


26.00 11-0230-00-07-01-526 CANAL LINED B+C 22975.07 27.47 6 15.9 1 2 1.5 11-0230-00-07-01-114 IP-53/2 IP-53/3

HDD- HORIZONTAL DIRECTIONAL DRILLING

OC+CC-OPEN CUT+CONCRETE COATING

B+C-BORING+CASING

CREEK

NALA

METTALED ROAD /MAJOR

LEGEND FOR METHODOLOGY

ASPHALTED ROAD /MUD OC-OPEN CUT METHOD

LEGEND FOR XING TYPE

STATE HIGH WAY

CANAL

NARROW GAUGE RAILWAY

RIVER

CROSSING DETAILS FOR CJPL PROJECTCROSSING DETAILS FOR 36" MAIN LINE ( CJPL PROJECT )

Page 1 of 3

Page 106 of 132


EXTRA

LENGTH

FOR

XING(m)

THK(mm) CLASSCLASS

ADOPTED

MIN. COVER


Start




B+C-BORING+CASING

CREEK

NALA





STATE HIGH WAY

CANAL


RIVER

CROSSING DETAILS FOR 36" MAIN LINE ( CJPL PROJECT )

27.00 11-0230-00-07-01-527 DRAIN SAHARALA OC +CC 24045.28 28.43 4 15.9 1 2 1.5 11-0230-00-07-01-114 IP-55/1 IP-55/2




31.00 11-0230-00-07-01-531 CANAL GURGAON B+C 28683.59 44.33 6 15.9 1 2 1.5 11-0230-00-07-01-117 IP-62/1 IP-62/2




35.00 11-0230-00-07-01-535 PIPELINE 12" BPCL OC 32164.08 8.99 4 15.9 2 2 11-0230-00-07-01-119 IP-73/1 TP-74

36.00 11-0230-00-07-01-536 ASPHALTED ROAD ODR OC 32242.17 15.32 4 15.9 2 2 1.5 11-0230-00-07-01-119 IP-73/1 TP-74

37.00 11-0230-00-07-01-537 PIPELINE 12" GAIL OC 32280.99 15.00 4 15.9 2 2 11-0230-00-07-01-119 TP74 IP-74/1

38.00 11-0230-00-07-01-538 PIPELINE IOCL MJPL OC 33373.67 18.05 4 15.9 2 2 11-0230-00-07-01-120 IP-75/1 IP-75/2




42.00 11-0230-00-07-01-542 NADI MEHANDARI OC +CC 36614.02 29.77 6 15.9 2 2 1.5 11-0230-00-07-01-121 IP-78/4 IP-78/5

43.00 11-0230-00-07-01-543 DRAIN OC +CC 37198.42 40.61 6 15.9 2 2 1.5 11-0230-00-07-01-122 IP-78/7 IP-78/8

44.00 11-0230-00-07-01-544 NALA OC +CC 37491.11 11.93 4 15.9 2 2 1.5 11-0230-00-07-01-122 IP-78/9 IP-78/10

45.00 11-0230-00-07-01-545 STATE HIGHWAY-16 B+C 39760.63 12.30 6 19.1 2 3 1.5 11-0230-00-07-01-123 IP-81/1 IP-81/2


47.00 11-0230-00-07-01-547 NALA OC +CC 44929.42 9.19 4 15.9 2 2 1.5 11-0230-00-07-01-126 IP-86/1 TP-87

48.00 11-0230-00-07-01-548 ASPHALTED ROAD ODR OC 46828.96 4.66 4 15.9 2 2 1.5 11-0230-00-07-01-127 TP-92 TP-92/1


50.00 11-0230-00-07-01-550NALA

OC +CC51114.54 8.52

4 15.9 2 2 1.511-0230-00-07-01-130 IP-95/3 IP-95/4

51.00 11-0230-00-07-01-551ASPHALTED ROAD ODR

OC51798.12 11.23

4 15.9 2 2 1.511-0230-00-07-01-130 IP-95/6 IP-96/7


OC55420.63 21.68

4 15.91

2 1.511-0230-00-07-01-132 IP-106/1 TP-107

53.00 11-0230-00-07-01-553NATIONAL HIGHWAY-8

B+C56335.2 28.48

6 19.1 2 3 1.511-0230-00-07-01-133 IP-112/1 TP-113

Page 2 of 3

Page 107 of 132


EXTRA

LENGTH

FOR

XING(m)

THK(mm) CLASSCLASS

ADOPTED

MIN. COVER


Start




B+C-BORING+CASING

CREEK

NALA





STATE HIGH WAY

CANAL


RIVER

CROSSING DETAILS FOR 36" MAIN LINE ( CJPL PROJECT )


OC59695.29 12.77

4 15.9 2 2 1.511-0230-00-07-01-135 IP-115/4 IP-115/5

55.00 11-0230-00-07-01-555NALA

OC +CC60590.38 10.66

4 15.9 2 2 1.511-0230-00-07-01-135 IP-116/3 IP-116/4


OC61136.68 11.49

4 15.9 2 2 1.511-0230-00-07-01-135 IP-117/2 IP-117/3


OC62079.63 6.04

4 15.9 2 2 1.511-0230-00-07-01-136 IP-119/1 IP-119/2


OC62308.25 5.72

4 15.9 2 2 1.511-0230-00-07-01-136 TP-120 TP-120/1

59.00 11-0230-00-07-01-559STATE HIGHWAY-26

B+C63037.28 27.42

6 19.1 2 3 1.511-0230-00-07-01-137 IP-121/2 IP-121/3


OC63738.98 15.1

4 15.9 2 2 1.511-0230-00-07-01-137 IP-122/2 IP-122/3

61.00 11-0230-00-07-01-561RAILWAY BG

B+C64228.58 8.64

6 19.1 2 3 1.811-0230-00-07-01-137 IP-123/1 IP-123/2

62.00 11-0230-00-07-01-562RAILWAY MG

B+C70172.65 3.34

6 19.1 2 3 1.811-0230-00-07-01-141 IP-128/1 IP-128/2

63.00 11-0230-00-07-01-563STATE HIGHWAY-15A

B+C70543.7 22.41

6 19.1 2 3 1.511-0230-00-07-01-141 IP-129/1 IP-129/2

64.00 11-0230-00-07-01-564U/C DELHI PASS ROAD

OC71609.68 33.24

6 15.9 2 2 1.511-0230-00-07-01-141 IP-130/1 IP-130/2


OC74625.06 20.74

4 15.9 2 2 1.511-0230-00-07-01-143 IP-133/4 IP-133/5

66.00 11-0230-00-07-01-566CANAL NEW MINOR

B+C75497.52 34.99

6 19.1 2 3 1.511-0230-00-07-01-144 IP-133/9 IP-133/10


OC76069.3 17.13

4 15.9 2 2 1.511-0230-00-07-01-144 IP-133/13 IP-133/14


OC76988.8 10.79

4 15.9 2 2 1.511-0230-00-07-01-144 IP-134/4 IP-134/5

69.00 11-0230-00-07-01-569DRAIN NAJAFGARH

OC +CC78350.81 49.58

6 15.9 2 2 1.511-0230-00-07-01-145 IP-136/1 IP-136/2


OC79813.41 18.94

4 15.9 2 2 1.511-0230-00-07-01-146 IP-138/4 IP-138/5


OC81254.31 15.26

4 15.9 2 2 1.511-0230-00-07-01-147 IP-139/6 IP-139/7

72.00 11-0230-00-07-01-572CANAL UNC 1L JAHANGI

B+C82638.38 32

6 15.91

2 1.511-0230-00-07-01-148 IP-139/13 IP-139/14


OC83463.42 12.45

4 15.91

2 1.511-0230-00-07-01-148 IP-139/18 IP-130/19

1081.05 264.00 15.9 1 / 2 2

273.17 88.00 19.1 2 / 3 3

TOTAL OF CROSSING PIPELINE (Thickness 15.9mm) CLASS 2

TOTAL OF CROSSING PIPELINE ( Thickness 19.1mm) CLASS 3

Page 3 of 3

Page 108 of 132

S.No. Description Start Ch. End Ch.Center

CH.

Crossing

Width

CLASS

LOCATIONWGEIPL ALIGN.NO. WGEIPL CROSS.NO. ALIGNMENT SHEET NO. CROSSING SHEET NO.

Start

Location

End

Location

Main

Crossing

1.00 ASPHALTED ROAD 122.35 133.05 127.700 10.70 1 11-0230-S1-07-01-101 11-0230-S1-07-01-501 GAIL/SKP/TRANSCO/2007/A.S./01 GAIL/SKP/OSRAM/2007/C.S./01 TP-1 TP-2 1

2.00 CART TRACK 814.570 TP 1 TP 2

3.00 11 KV Power Line 1399.810 IP 2/2 TP 3

4.00 ASPHALTED ROAD 1481.18 1489.81 1485.490 8.63 1 11-0230-S1-07-01-101 11-0230-S1-07-01-502 GAIL/SKP/TRANSCO/2007/A.S./02 GAIL/SKP/OSRAM/2007/C.S./02 TP-3 TP-4 2

5.00 440 V Power Line 2544.080 TP 5 IP 5/1

6.00 440 V Power Line 2611.560 TP 5 IP 5/1

7.00 440 V Power Line 3319.860 IP 5/1 TP 6

8.00 440 V Power Line 3339.240 IP 5/1 TP 6

9.00 CART TRACK 3429.550 TP 3 TP 4

10.00 440 V Power Line 3531.700 TP 6 IP 6/1

11.00 440 V Power Line 3984.780 IP 6/1 TP 7

12.00 440 V Power Line 4105.840 IP 6/1 TP 7

13.00 CART TRACK 4295.020 TP 6 IP 6/1

14.00 11 KV Power Line 4895.910 TP 7 IP 7/1

15.00 ASPHALTED ROAD 4896.89 4908.93 4902.910 12.04 1 11-0230-S1-07-01-103 11-0230-S1-07-01-503 GAIL/SKP/TRANSCO/2007/A.S./03 GAIL/SKP/OSRAM/2007/C.S./03 TP-7 IP-7/1 3

16.00 11 KV Power Line 5002.850 TP 8 TP 9

17.00 STATE HIGHWAY 5417.99 5434.02 5426.000 16.03 1 11-0230-S1-07-01-104 11-0230-S1-07-01-504 GAIL/SKP/TRANSCO/2007/A.S./04 GAIL/SKP/OSRAM/2007/C.S./04 TP-9 IP-9/1 4

18.00 DISTRIBUTARY CANAL 5444.67 5460.35 5452.510 15.68 1 11-0230-S1-07-01-104 11-0230-S1-07-01-505 GAIL/SKP/TRANSCO/2007/A.S./05 GAIL/SKP/OSRAM/2007/C.S./05 IP-9/1 TP-10 5

19.00 CART TRACK 5459.070 IP 9/1 TP 10

20.00 DISTRIBUTARY CANAL 5938.30 5953.96 5946.130 15.66 1 11-0230-S1-07-01-104 11-0230-S1-07-01-506 GAIL/SKP/TRANSCO/2007/A.S./06 GAIL/SKP/OSRAM/2007/C.S./06 TP-11 TP-12 6

21.00 CART TRACK 6133.580 TP 11 TP 12

22.00 24" U/G WATER PIPELINE 7181.640TP 12 TP 13

23.00 CART TRACK 7406.620 IP 13/1 IP 13/2

24.00 CART TRACK 7844.610 IP 13/1 IP 13/2

25.00 400 KV HT Power Line 8579.590 IP 13/3 IP 13/4

26.00 NALA 9258.05 9267.75 9262.900 9.70 1 11-0230-S1-07-01-106 11-0230-S1-07-01-507 GAIL/SKP/TRANSCO/2007/A.S./07 GAIL/SKP/OSRAM/2007/C.S./07 IP-13/5 IP-13/6 7

27.00 DRAIN 10333.16 10341.55 10337.350 8.39 1 11-0230-S1-07-01-106 11-0230-S1-07-01-508 GAIL/SKP/TRANSCO/2007/A.S./08 GAIL/SKP/OSRAM/2007/C.S./08 TP-14 TP-15 8

28.00 NALA 11766.52 11782.16 11774.340 15.64 1 11-0230-S1-07-01-107 11-0230-S1-07-01-509 GAIL/SKP/TRANSCO/2007/A.S./09 GAIL/SKP/OSRAM/2007/C.S./09 TP-16 TP-17 9


30.00 11 KV Power Line 12532.110 IP 18/1 IP 18/2

31.00 440 V Power Line 13452.400 IP 19/1 TP 20

32.00 440 V Power Line 13525.390 IP 19/1 TP 20

33.00 CART TRACK 13641.120 TP 18 IP 18/1

34.00 440 V Power Line 13962.460 TP 20 TP 21


36.00 440 V Power Line 14236.430 IP 22/1 TP 23

37.00 ASPHALTED ROAD 14234.47 14247.71 14241.090 13.24 3 11-0230-S1-07-01-109 11-0230-S1-07-01-512 GAIL/SKP/TRANSCO/2007/A.S./12 GAIL/SKP/OSRAM/2007/C.S./12 IP-22/1 TP-23 12

38.00 440 V Power Line 15193.460 TP 24 TP 25

39.00 NALA 15933.960 IP 22/1 TP 23

40.00 400 KV HT Power Line 17329.980 TP 32 TP 33

41.00 STATE HIGHWAY-15A 17704.43 17724.39 17714.410 19.96 1 11-0230-S1-07-01-111 11-0230-S1-07-01-513 GAIL/SKP/TRANSCO/2007/A.S./13 GAIL/SKP/OSRAM/2007/C.S./13 IP-34/1 TP-35 13

42.00 22 KV Power Line 17724.110 IP 34/1 TP 35

43.00 RCC DRAIN 17728.550 IP 34/1 TP 35

BANMOULI SPUR LINE CJPL (GAIL)

Page 1 of 1

Page 109 of 132

of 132

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SCALE DRAWING NUMBER REV

11-0230-00-10-01-001110230

PROTECTION SCHEMATIC

IMPRESSED CURRENT CATHODIC

N.T.S.

JOB NO.

0

(A Government of India Undertaking)

30000

1200 (MIN)

30 M DEEP ANODE BED

50

200Ø

1500

015

000

400

350

5010

0

800

700

600

CHAINSA-JHAJJAR GAS PIPELINE PROJECTPROJECT:

TITLE:

CLIENT:

REVISIONDATENO BY CHKD APPD.

0 29.07.08 ABC SNP PKS

CONSULTANT:


J. P. KENNY PTY. LTD.

2. AT NTPC END LOCATED OPPOSITE TO TLD GANTYR LICENCED AREA FENCING ACROSS THE ROAD & DRAIN, BY THE SIDE OF BOUNDARY WALL. 1. AT IOCL TERMINAL LOCATED BY THE SIDE OF GATE (1), AFTER THE LICENCED AREA FENCING.

NOTES:

RECTIFIER UNIT/CPPSM

TRANSFORMER

GRADE

PIN BRAZING

PIPE

(-)

(+)

D.C. OUTPUT

230V A.C. INPUTJUNCTION BOX

BORE HOLECONSISTING OF 1 STRING ANODES

COATED5000 PIPE TOP BE

TOP BE FILLED WITH

GRAVEL AND SAND

BREEZE COLUMN

TOP OF COKE

P.V.C PIPE 1"Ø

HANDLE

150 M.S.

TLP

3. 15000 INDICATIVE TO SUIT ACTUAL SITE CONDITION

4. 30000 INDICATIVE TO SUIT ACTUAL SITE CONDITION

PIN BRAZING

ISSUED FOR TENDER

Page 111 of 132

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ELECTRODES PIPELINE

FABRICATION AND INSTALLATION DETAILS OF

JOB NO.

0


N.T.S. 110230 11-0230-00-10-01-002

NOTES :-

BILL OF MATERIAL

Ø 90

1530

380

2550

Ø 84

3

2

1

4

5

6

7

8

9

10

11

12

ARRANGEMENT OF TWO REFERENCE

ELECTRODES ON PIPE LINE TYPICAL

INSTALLATION DETAILS

100

CARRIER PIPE

REF.-1 (CP STATION) REF.-3

50 50

REF.-2 (CP STATION)


TITLE:

CLIENT:



CONSULTANT:



1. ALL DIMENSIONS ARE IN MM UNLESS OTHERWISE SPECIFIED.

2. FOR CABLE TO REFERENCE CELL CONNECTION FOLLOW THE

NORMAL CABLE CONNECTION PROCEDURE.

1 NO.

5.

DESCRIPTIONSL NO.

P.V.C PIPE 3 MM THICK1.

2. SAG WOOD PLUG

3. CUSO4 CRYSTALS

4.

AS REQD.

1 NO.

1 NO.

QTY.

ELECTROLYTIC COPPER SPIRAL 8 MM Ø

9.

8.

7.

6.

10.

11.

12.

BRAZED COPPER JOINT

WATER FILLING BOLTED HOLES Ø 8 MM

CUSO4 SATURATED SOLUTION

1 NO.

2 NOS.

CONNECTION CABLE 10 MM

EPOXY FOR SEALING

BOLTED CABLE CONNECTION

COPPER LUG

HYLAM BUSH

AS REQD.

1 NO.

1 NO.

1 NO.

AS REQD.

AS REQD.

10 MM CABLE2

2

G.L. G.L.

1200 M

M(MIN)

REF. ELEC.II

TO JUNCTIONBOX

C.P. STATION.

AT LEAST 2 NOS REF. ELECTRODE SHOULD BE INSIDE THE3.

ISSUED FOR TENDER

Page 113 of 132

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DETAILS OF CABLE LAYING (TYPICAL)

FABRICATION AND INSTALLATION

JOB NO.

0


N.T.S. 110230 11-0230-00-10-01-003

NOTES :-SECTION VIEW OF CABLE

LAYOUT IN CONCRETE

800

SECTION A-A

FOR NORMAL LAYING IN EARTH

ENLARGED DETAIL-X

X

3"

500


TITLE:

CLIENT:



CONSULTANT:



1. ALL DIMENSIONS ARE IN MM UNLESS OTHERWISE SPECIFIED.

CABLE

CONCRETE

P.V.C PIPE/CONDUIT/SLEEVE

G.I. PIPE

G.L.

FINE SOIL BACKFILLING

SAND BACKFILLING ARROUND CABLE

CABLE

BRICKS

P.V.C PIPE/CONDUIT/SLEEVE

CABLE

ALL UNDERGROUND CABLE SHALL BE LAID IN BRICK COVERING2.WITH SAND BACKFILL.

SHALL BE LAID SIDE BY SIDE IN SEPARATE BRICK COVERING.3. FOR MORE THAN ONE CABLE IN THE SAME CABLE TRENCH CABLE

AT BOTH ENDS OF CABLE TERMINATION A LOOP OF ONE METER4.(MINIMUM) SHALL BE KEPT AS SPARE.

ELBOWS SHALL BE PROVIDED.5. WHEREVER TERMINATION IN BETWEEN IS REQUIRED T-JOINTS OR

AT ROAD/NALA CROSSINGS, G.I. PIPE CONDUIT SHALL BE USED.6.

WARINING PLASTICK MAT

ISSUED FOR TENDER

Page 115 of 132

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DEEP ANODE GROUND BED DETAILS


JOB NO.

0


N.T.S. 110230 11-0230-00-10-01-004

NOTES :-

600

700

80010

050

350

400

1500

015

000

200Ø

1

2

3

4

5

6

50

7

8

9

10

11

DETAIL-BM.S. CENTRALISER CLAMP ARRANGEMENT

30 M DEEP ANODE BED

150

251204

2515

0

BILL OF MATERIAL

1554 4

3

14

4

700

350

350

700

PLAN OF PIT COVER

DETAIL-A

11

13

12

ANODE TAIL CABLE LENGTHS

30 M DEEPWELL ANODE BED.

30000


TITLE:

CLIENT:



CONSULTANT:



ALL DIMENSIONS ARE IN MM UNLESS OTHERWISE SPECIFIED.

150 M.S.

HANDLE

P.V.C PIPE 1"Ø

TOP OF COKE

BREEZE COLUMN

GRAVEL AND SAND

TOP BE FILLED WITH

5000 PIPE TOP BECOATED

SEE DETAIL-A

SEE DETAIL-B

CONSISTING OF 1 STRING ANODES

1 NO.

AS REQD.

1 NO.

1 NO.

CONCRETE WORK FOR TOP OF ANODE BED

CABLE TIE WITH 1/4" NYLON ROPE

G.I. PIPE 2" Ø FOR SUPPORTING CABLE

ANODE LEAD JUNCTION BOX

M.S. PLATE TOP COVER

1 NO.

P.V.C PERFORATED VENT PIPE 1" Ø

P.V.C PIPE 100 MM Ø

CABLE LEADS

12.

11.

10.

6.

7.

8.

9.

M.S. CENTRALISER

QTY.

30 M

AS REQD.

1 STRING MMO

4.

ANODE 50 MM Ø x 1554 MM LONG3.

COKE BREEZE2.

1. M.S. CASING PIPE 200 NB

SL NO. DESCRIPTION

5.

10 NOS.

ANODE TAIL CABLE LENGTHANODE NO.

31 M.1

14.

15.

13.

AS REQD.

AS REQD.

AS REQD.

P.V.C PIPE 4" Ø

M.S. NUT & BOLT

M.S. LIFTING HANDLES

AS REQD.

2 NO.

56 NOS.

BORE HOLE

30000 INDICATIVE TO SUIT ACTUAL SITE CONDITION.

15000 INDICATIVE TO SUIT ACTUAL SITE CONDITION.

ISSUED FOR TENDER

Page 117 of 132

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WITH FOUNDATION DETAILS

TEST LEAD POINTS & JUNCTION BOX

JOB NO.

0


N.T.S. 110230 11-0230-00-10-01-005

25022

5

130200

130

FRONT ELEVATION SIDE ELEVATION

400

50

200

600

125

600

250

225

200

600

400

397

50

50

SIDE ELEVATION

TERMINAL PLATE DETAIL

200

225

250

37.5 125 37.5

150

2525

25

2525

FRONT VIEW DOOR REMOVED

BILL OF MATERIAL

24


TITLE:

CLIENT:



CONSULTANT:



3

9

17

18

GL

22

20

25

LEAN CONCRETE 1:4:8

3

4

1

6

5

18

20

22

23

CONCRETE MIX M15

OVERALL LENGTH OF PIPE CAN BE MAINTAINED BY WELDING STANDARD BEND

21

10

7

11 12 13

P1 P2 P3 P4

R4R3R2R1 R5

004

044

004

BRASS WASHER

MS. ANGLE 5TKx50x50x30

STEEL SCREW, M6x16

002

066

13.

15.

14.

001

5.

DESCRIPTIONSL NO.

BOTTOM PLATE, 5TKx194 MS PLATE1.

2. REAR & SIDE, 2.67x217x704 MS

3. TOP, 2.67x250x300 MS

4.

001

001

001

QTY.

FRONT TOP 2.67 x190x81 MS

9.

8.

7.

6.

10.

11.

12.

SHUTTER 2.67x234x234 MS

SPRING WASHER SC. B.6

FRONT BOTTOM, 2.67x190x81 MS

BRASS STUD M6x50LG (FOR TERMINALS)

BRASS NUT M6

TERMINAL PLATE, 8x150x150 PHENOLIGE LAM SHT.

HINGE FOR SHUTTER

CASTLE LOCK WITH MASTER KEY (3NOS. KEY)

044

001

001

001

001

001

16.

17.

18.

19.

20.

21.

22.

23.

24.

LATCH FOR SHUTTER

MS PIPE, 100 NB x 5.4 TKx 1275MM

NEOPRENE RUBBER GASKET 6 TK.

FOUNDATION PLATE 6TKx400x400 AA 10108

RUBBER BUSH

FOUNDATION BOLT M14x125 LG WITH

STIFFENER PLATE 6TKx100x100

NAME PLATE ANNODISED AL 0.9x120x160

MS COUPLING PLATE, STKx130x130 MS PLATE

001

001

001

001 SET

002

001

001

001

001

SPRING WASHER AND NUT

RCC FOUNDATION FOUNDATION

RCC

GL

ISSUED FOR TENDER

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(TYPICAL) DETAILS

TEST STATION CONNECTION SCHEME

JOB NO.

0


N.T.S. 110230 11-0230-00-10-01-006

TYPE-ATYPE-B

TYPE-C

TYPE-D TYPE-EB

TYPE-E

NOTES :-

DETAILS OF CONNECTION SCHEME

À'

À'

À'

À'

À' À'

À'

À'

À'À'

VIEW-À'

TYPE-A1

5M 5M60MÀ' À'


TITLE:

CLIENT:



CONSULTANT:



4 MM CABLE2

PIN BRAZINGSPIPE LINE

SHORT LINE

TERMINAL (S) FOR

ANODE (S)

10 MM CABLE2

PIN BRAZINGS

SHORT LINE

225 MM CABLE

4 MM CABLE2

PIN BRAZINGS

VARIABLE RESISTOR

SHUNT

PIN BRAZINGS

SHORT LINK

4 MM CABLE

CARRIER PIPE

PIN BRAZINGSS

CASING PIPE

ANNODE

210 MM CABLE

25 MM CABLE2

BOND/SHORT LINK

PIN BRAZINGSS

GROUNDING CELL

INSULATING JOINT

225 MM CABLE

10 MM CABLE2

GROUNDING

INSULATING JOINT

PIN BRAZINGS

1. THE CONNECTION SCHEMES ARE TYPICAL

2. REQUIRED CONNECTION SCHEME SHALL BE

PROVIDED ON THE TERMINAL PLATE OF TESTLEAD POINT.

TYPE A : PSP MONITORING ONLY.

TYPE B : ANODE TO PIPE CONNECTION.

TYPE D : CASED CROSSING.TYPE C : PIPE LINE CROSSING.

TYPE E : GROUNDING CELL UNBONDED.TYPE EB : GROUNDING CELL BONDED.

2

CELL

4 MM CABLE

TYPE A1 : LINE CURRENT MEASUREMENT.

PIPE LINE

PIN BRAZINGS

24 MM CABLE

PIN BRAZINGS

ISSUED FOR TENDER

Page 121 of 132

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WELDING CABLE TO PIPE JOINT

FABRICATION AND INSTALLATION OF THERMIT

JOB NO.

0


N.T.S. 110230 11-0230-00-10-01-007

NOTES :-

2

1

4

5

PROCEDURE FOR CARRYING OUT THERMIT WELDING CABLE TO PIPE JOINT

BILL OF MATERIAL

3


TITLE:

CLIENT:



CONSULTANT:



1.

PIPE LINE COATING

STEEL PIPE WALL

INSTRUCTION APPEARING WITH THIS DRG. ARE SUITABLE FOR Cu

CABLE CONNECTIONS

MOULDS SHALL BE USED.

FOR DIFFERENT SIZES OF CABLES, MATCHING SIZES OF WELDING 2.

3. FOR SEALING THE COMPLETED JOINT FILL WITH EPOXY RESIN

FORMULATION ENSURING THAT EVERY METALIC PART OF THE

JOINT IS COMPLETELY INSULATED.

HAS BEEN REMOVED AND IN ADDITION AT LEAST 15 MM

SUCH THAT IT COVERS THE AREA FROM WHERE PIPE COATING

FOR EFFECTIVE SEALING, THE SIZE OF P.V.C CAP SHOULD BE4.

OVERLAPPING THE EXISTING GOOD COATING OF THE PIPE LINE.

REMOVE PIPE COATING FROM A SPOT ON TOP OF PIPE APPROX. 15MM LARGER THAN MOULD BASE.1.

4.

3.

2. CLEAN PIPE TO BRIGHT METAL FOR APPROX. 40MM PIPE SPOT.

REMOVE 5MM OF INSULATION FROM END OF CABLE, CRIMP 10MM LONG COPPER SLEEVE ON CABLE END.

POSITION COPPER SLEEVE ON CLEAN PIPE SPOT.

SECURE AND FASTEN CABLE ON PIPE WITH ADHESIVE TAPE AND STRAPPING BANDS.5.

PLACE MOULD ON CABLE TO PIPE JOINT AND HOLD SECURELY.6.

7. PLACE METAL DISC IN MOULD DEPOSIT WELD CHARGE ON DISC AND PLACE LID ON MOULD.

IGNITE THE CHARGE WITH IGNITER FOR WELDING.8.

9. REMOVE MOULD AFTER COMPLETE IGNITION OF THE CHARGE.

TEST THE CONNECTION BY STRIKING SEVERAL BLOWS ON THE CONNECTIONS USING A 1 Kg. HAMMER. TOP10.OF WELD MAY BE HAMMERED FLAT, IF DESIRED.

COVER THE CONNECTION WITH P.V.C CAP.11.

12. FILL THE P.V.C CAP WITH EPOXY MIXED HARDENER AND ALLOW TO DRY TO BECOME HARD.

QTY.

1 NO.

1 NO.

AS REQD.

EPOXY RESIN4.

CABLE3.

COPPER SLEEVE2.

1. P.V.C CAP

SL NO. DESCRIPTION

5. CAD WELD 1 NO.

AS REQD.

ISSUED FOR TENDER

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CHAINSA-JHAJJAR GAS PIPELINE PROJECT

DETAILS OF CABLE ROUTE MARKER


JOB NO.

0


N.T.S. 110230 11-0230-00-10-01-008

50 255025

460

Ø90

Ø 100

62

4515

A A

C P

CABLE

3

1

3

4

2

50

50

SECTION A-A

NOTES:

BILL OF MATERIAL

Ø8Ø8

PROJECT:

TITLE:

CLIENT:


0 29.07.08 ISSUED FOR TENDER ABC SNP PKS

CONSULTANT:



LETTER SIZE

20 x 10

1. ALL DIMENSION ARE IN MM

DESCRIPTIONSL NO.

MARKER PLATE (CAST IRON)1.

2. M.S. ANGLE 25x25x510 LONG

3. BOLTS M6x20 LONG

4. NUTS M6 2 NOS.

2 NOS.

1 NO.

1 NO.

QTY.

2. IN CASE OF POWER CABLE REPLACE "C.P" WITH "POWER"

3. THE CABLE MARKER SHALL BE PAINTED WITH APPROVED GRADE ALUMINIUM PAINT.

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SCHEMATIC

TEMPORARY CATHODIC PROTECTION

JOB NO.

0


N.T.S. 110230 11-0230-00-10-01-009

Test Lead Points (TLP) at every 1.5 Km.

GL

Insulation Monoblock

Pre-packed Mg Anodes.

TLP Connection Details

GL


5M (

min.

)


VIEW - À'

À'

INSULATOR

ANODES

À'

Station

1

Station5M (

min.

)

5M

2 N N21

PIPE

Mg Anode

Shorting Link

(Anodebed)

5M

(Anodebed)


TITLE:

CLIENT:



CONSULTANT:



NOTE:

Mg ANODES TO BE BUNCHED TOGETHER IN ANODEBEDS AT

LOCATIONS MOST SUITED AS PER ATTENUATION CALCULATIONS.

ISSUED FOR TENDER

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PROJECT:

TITLE:

CLIENT:

SCHEME FOR CASED CROSSINGS

TYPICAL CATHODIC PROTECTION

JOB NO.

0

CONSULTANT:


N.T.S. 110230 11-0230-00-10-01-010

VENT

GRADE

COATED CARRIER PIPE

CASING PIPE (COATED) - APPROX. 65M

END SEAL

SACRIFICIAL ANODESFOR ADDL. CARRIER PIPE PROTECTION(14 NOS. @5M APART)

CASING INSULATORS

SACRIFICIAL ANODES (PREPACKED)FOR CASING PIPE PROTECTION(3 NOS. @5M APART)

END SEAL

VENT

5M (MIN.)

NOTES:

1. CASING PIPE- SACRIFICIAL ANODE CATHODIC PROTECTION AT THE TWO ENDS TOINDEPENDENTLY PROTECT THE CASING PIPE FROM RAVAGES OF SOILSIDECORROSION.

2. CARRIER PIPE - ICCP IS ALREADY PROTECTING THE CARRIER PIPE. IN ADDITION

SACRIFICIAL ANODES ARE INSTALLED, AS ABOVE, BETWEEN 4-7 O' CLOCKPOSITION TO COUNTER ELECTROLYTE.

3. CASINGS OVER 20mtr. LENGTH SHALL HAVE ADDITIONAL CATHODIC PROTECTIONFOR CARRIER PIPE BOTTOM AND THE ANNULUS SHALL BE PACKED WITH SAND ORBENTONITE.

4. CASINGS LESS THAN 20mtr. LENGTH SHALL NOT HAVE ADDITIONAL CATHODICPROTECTION FOR CARRIER PIPE BOTTOM AND THE ANNULUS SHALL BE PACKEDWITH SAND OR BENTONITE.






ISSUED FOR TENDER

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PROJECT:

TITLE:

CLIENT:

LIDA SINGLE ANODES

INSTALLATION DETAILS OF

JOB NO.

0

CONSULTANT:


N.T.S. 110230 11-0230-00-10-01-011

2M3M

5M

5M

A1

A2

A3

A10

A11

A12

ANODEJUNCTION

BOX

LIDA SINGLE ANODE

CANISTER

BACKFILL COKE BREEZE

NATIVE BACKFILL

0.8M

GL GL

200 MM

2M

3M

TO TRU






ISSUED FOR TENDER

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