1 general instrumentation works · the monitoring of treated paramenter of the mbbr are absolutely...

Tender for 46.76 MLD STP, KPS 3 & 4 Sewage Pumping stations of average capacities 10.62 MLD & 59.43 MLD at

Kharigaon, Thane, Phase II

Volume II E, Instrumentation Specifications

Contractor Inst-i Engineer Incharge, TMC

TABLE OF CONTENT: VOLUME II E, INSTUMENTATION SPECIFICATIONS

1 GENERAL INSTRUMENTATION WORKS ........................................... 1

1.1 Introduction ....................................................................................... 1 1.2 Scope of Work .................................................................................... 1

1.2.1 Bar Screen/Trash & Grit Removal ................................................................. 1 1.2.2 Grit Collectors .............................................................................................. 1 1.2.3 Open Channel Flow Meter ............................................................................. 2 1.2.4 MBBR .......................................................................................................... 2 1.2.5 Flash Mixer .................................................................................................. 3 1.2.6 Tube Settler.................................................................................................. 3 1.2.7 UV System ................................................................................................... 3 1.2.8 Sludge Pumps Feeding to Centrifuge ............................................................. 3 1.2.9 Sludge Sump Agitator ................................................................................... 3 1.2.10 Centrifuge Unit ............................................................................................. 3

1.3 Additional Scope ................................................................................ 4

2 SITE CONDITION AND VOLTAGE CRITERIA .................................... 7

2.1 Site Condition .................................................................................... 7 2.2 Utilization Voltages ............................................................................ 7 2.3 Earthing System ................................................................................. 7

3 APPLICABLE STANDARD AND ABBERIVIATION ............................... 8

4 PARTICULAR REQUIREMENT OF INSTRUMENTATION SYSTEM ..... 10

4.1 GENERAL ......................................................................................... 10 4.2 ON-LINE DISSOLVED OXYGEN (DO) ANALYSER ................................ 11 4.3 ON-LINE pH MEASUREMENT SYSTEM: ............................................. 14 4.4 FULL BORE ELECTROMAGNETIC FLOWMETER: ............................... 16 4.5 ULTRASONIC FLOW METER: ............................................................ 20 4.6 ULTRASONIC DIFFERENTIAL LEVEL TRANSMITTER ........................ 22 4.7 ............................................................................................................ 24 4.8 PC SYSTEM FOR SCADA ................................................................... 24 4.9 UNINTERRUPTED POWER SUPPLY .................................................... 25

5 INSTRUMENTATION CONTROL PANEL .......................................... 27

5.1 CONSTRUCTION ............................................................................... 27 5.1.1 Microprocessor Based Alarm Annunciator ................................................... 28 5.1.2 Surge Protection Devices............................................................................. 29 5.1.3 Intrinsic Safety Barriers .............................................................................. 30 5.1.4 Receiving Indicators / Controllers ............................................................... 30

5.2 PLC SYSTEM .................................................................................... 30 5.2.1 Basic Process Function ............................................................................... 31 5.2.2 Input / Output Module ............................................................................... 32

5.3 COMMUNICATION............................................................................. 33 5.4 PROGRAMMING SOFTWARE ............................................................. 34 5.5 SCADA SPECIFICATION .................................................................... 34

6 INSTALLATION AND COMMISSIONING .......................................... 36

6.1 FIELD MOUNTED INSTRUMENT ........................................................ 36 6.1.1 General ...................................................................................................... 36 6.1.2 Field Transmitter ........................................................................................ 36




Contractor Inst-ii Engineer Incharge, TMC

6.1.3 Instrument Connection ............................................................................... 37 6.1.4 Instrument Power Cables ............................................................................ 37 6.1.5 PVC Insulated Power Cable ......................................................................... 38 6.1.6 Cable Accessories ....................................................................................... 39 6.1.7 Cable Laying .............................................................................................. 39 6.1.8 Junction Boxes........................................................................................... 39

6.2 TEST ................................................................................................ 39 6.3 INSPECTION ..................................................................................... 40

7 LIST OF APPROVED MAKES FOR INSTRUMENTATION EQUIPMENTS

.................................................................................................... 41




Contractor Inst-iii Engineer Incharge, TMC

PREAMBLE

The Volume II D: Instrumentation Specifications are to be read for the purpose of pricing in conjunction with "Volume-I: Conditions of Contract" of the Tender Documents containing instructions to Tenderer and General Conditions of Contract; “Volume IIA: Scope of Work” under this tender; “Volume IIB: Civil Specifications”, “Volume IIC: Mechanical Specifications”, “Volume II D: Electrical Specifications” and “Volume-III: Price Schedule” of this tender. The prices quoted in the Volume III: Financial Bid shall be all inclusive value for the work described including all costs and expenses which may be required in and for the execution of the work described together with all general risks, liabilities and obligations set forth or implied in the document on which the tender is based. All works shall be carried out strictly as per detailed specifications whether actually specified or not. If not specified work shall be carried out as per directions of Engineer Incharge. The total amount entered in the Volume III: Financial Bid document shall be written in ink and shall be entered both in figures and words. If Tenderer needs any clarification, they shall obtain the same in writing from Engineer Incharge. No notice will be taken of any verbal discussions in such matters.




Contractor Inst-1 Engineer Incharge, TMC

1 GENERAL INSTRUMENTATION WORKS

1.1 INTRODUCTION

(a) Supply, installation, testing , commissioning and inspection (as required) at places of manufacture, painting, supply, delivery to site, storage at site, installation / erection, testing and commissioning of the entire instrumentation / automation including PLC/SCADA systems as per specifications and required quantities including all fittings, cables/wires, conduits, hardware and consumable and also including all relevant works like termination, cable jointing, earth excavation/backfilling, structural works for equipment support / M.S. fabricated cable trays, all allied civil works, etc. complete in all respects.

(b) In outdoor areas cables shall be mostly laid directly buried underground with adequate mechanical protection wherever applicable. Where as in indoor areas, cables shall be laid in trenches / walls / ceilings / structures through suitable trays / cleats.

(c) Installation of the contract work including furnishing labour (Skilled / Unskilled) and supervisory personnel inclusive of the services of an experienced engineer is included in the scope of work / services.

(d) It is to be noted that instrumentation and automation Scope of supply requirement given in this section are minimum. All other details or items not mentioned in this minimum scope of supply, which are necessary for successful completion of the work, shall be included in the scope of Bidder. The same shall be approved by Engineer In -charge.

1.2 SCOPE OF WORK-STP

1.2.1 Bar Screen/Trash & Grit Removal (a) Raw sewage water from SPS will be collect into the Inlet chamber. Sewage from inlet

chamber will flow from 3 Nos. Bar screen (2 Mechanical + 1 Manual) screen to Grit chamber.

(b) Differential level transmitter will be provided in up and down stream of mechanical bar screen. Operation of bar screen and conveyer belt will work in Local / auto mode. In Auto mode operation of bar screen will based on DLT and time based operation form local control panel having local PLC facility or from Main PLC panel.

(c) The electrically operated gates will be installed on both upstream and downstream sides each coarse screen so that each screen channel can be Isolated for maintenance. The electrically operated gates will be operated from local control panel mounted on gate or from remote through MCC / PLC / SCADA Station.

(d) Alarms shall be generated in case of any fault and logged into the SCADA system.

1.2.2 Grit Collectors (a) There are two mechanical grit collectors after screen channels.





(b) The grit collectors will be installed in the grit basin to transport settled grit into a pit of the basins by a rotating scraper. The pit also serves as the bottom of the grit washer/classifier. The de-gritted sewage overflows to a Flow measuring channel and then to the common Inlet of MBBR Basins.

(c) Motorised Gates will be installed so that each grit chamber can be isolated for

maintenance, which can be operated from actuator or from MCC / PLC / SCADA Station. The manual sluice Gate will be installed at the bypass channel.

(d) Alarms generated shall be in case of any fault and logged into the SCADA system.

1.2.2.1 GRIT SCRAPING MECHANISM (DETRITOR)

(a) Each grit chamber will be provided with a Grit Scraping Mechanism (Detritor).

(b) The Detritor will be operated from local Push Button station mounted adjacent to the

equipment/ remote from the MCC/ PLC / SCADA Station.

(c) Alarms shall be generated in case of any fault and logged into the SCADA system.

1.2.2.2 Rake MECHANISM

(a) The Rake Mechanism of grit chamber will be operated from local Push Button station

mounted adjacent to the equipment/remote from the MCC/PLC /SCADA Station.

(b) Alarms shall be generated in case of any fault and logged into the SCADA system.

1.2.2.3 ORGANIC MATTER RETURN PUMP

(a) The Recycling pump of grit chamber will be operated from local Push Button station mounted adjacent to the equipment / remote from the MCC/PLC / SCADA Station.

(b) Alarms shall be generated in case of any fault and logged into the SCADA system.

1.2.3 Open Channel Flow Meter (a) For measuring the flow Ultrasonic flow meter will be installed on Flow Measuring

Channel (FMC), which will have local transmitter and PLC / SCADA communication facility.

1.2.4 MBBR

(a) Dissolved oxygen analysers / meters shall be provided on the MBBR. The monitoring of

treated paramenter of the MBBR are absolutely essential for preventing process upset and improves treatment reliability and efficiency. Dissolved oxygen levels in the range of 2mg/l to 5 mg/l for MBBR reactor.

(b) Further, based on this monitoring, in order to maintain these levels, variable frequency drives shall be provided for speed variation of requisite no. of air blowers, as specified, for treatment schemes having diffused aeration based system.





(c) Motorised Gates will be installed both at the entrance the MBBR, so that each MBBR can be isolated for maintenance, which can be operated from actuator or from PLC / SCADA panel. Sluice Gate will be installed at the bypass channel.

1.2.5 Flash Mixer

(a) Under normal operation, the agitator will be in continous operation in the flash mixer. Fault / Alarm shall be generated in case agitators motor gets tripped.

1.2.6 Tube Settler

(a) Motorised Gates will be installed at the entrance of the Tube Settler, so that each tube

settler can be isolated for maintenance, which can be operated from actuator or from PLC / SCADA panel.

1.2.7 UV System

(a) UV system shall be fully automatic as per the UV requirement in treated water before

feeding into the discharge channel. Status of UV system along with power consumption in the UV system shall be monitored and logged in the SCADA system. Alarm shall be generated if there is any failure in UV System.

(b) Motorised Gates will be installed at entrance of the UV system, so that UV system can be isolated for maintenance, which can be operated from actuator or from PLC / SCADA panel.

(c) Online PH meter shall install on the outlet of the UV channel which shall have PLC / SCADA communication facility.

(d) Ultrasonic Flow meter will be also provided at the outlet of UV channel to measure the flow going into the discharge channel after treatment.

1.2.8 Sludge Pumps Feeding to Centrifuge (a) The Sludge Pumps will be manually operable in the field by local Push Button station

mounted adjacent to the equipment / remote from the MCC/Supervisory from SCADA HMI.

(b) The Ultrasonic level transmitter will be provided on Sludge sump. Based on the level in

sump, sump pump will operate in Auto mode and feed sludge to Centrifuge unit.

1.2.9 Sludge Sump Agitator (a) Under normal operation, the sludge sump agitator will be in continous operation in the

sludge sump. Fault / Alarm shall be generated in case agitators motor gets tripped.

1.2.10 Centrifuge Unit (a) The Centrifuge will be manually operable in the field by local Push Button station

mounted adjacent to the equipment / remote from the MCC/Supervisory from SCADA HMI.





(b) In auto mode once the water level in sludge tank reaches to desired level; the Sludge Pumps feeding to centrifuge start will be start. After that centrifuge and the poly dosing pump starts immediately. If anyone fails; all the system stops.

1.3 ADDITIONAL SCOPE

(a) Bourdontype pressure gauges shall be provided on discharge side of Blower. The datasheet will be submitted by contractor.

(b) In PS-9 and PS-10, Operation of Raw Sewage Pump will be controlled and monitored from Main PLC panel provided by STP Contractor. The operation of the pumps will be automatically based on level in sludge sumps and for level in SPS feedback shall be taken from ultrasonic level transmitter, which will be installed by SPS Contractor.

(c) Flow operation of pumps shall be in a sequence that it prevents dry run of the pumps and to have level or running hours based start / stop of pumps so that it will enhance equipment life. Status (MFM / pumps operation detail / power consumption) shall be taken in Main PLC panel for logging into SCADA by SITC of required cable.

(d) Status of all electrical parameter (MFM, KWH, PF, Relay status) of all panel shall be monitored in the PLC panel. Status of all main breakers shall be monitored in PLC / SCADA panel.

(e) Status of all electrical parameter of VFD shall be monitored in PLC / SCADA panel.

(f) STP shall have redundant PLC with PC based SCADA station for necessary controls of

STP process as well as remote monitoring and control of SPS.

(g) All Remote panel data will be collected at Main PLC control panel located at the Main Control Room. IO list provided by TMC representative shall have 15 % spares.

(h) It shall be possible to control the STP / SPS functions from the SCADA station with necessary password protections and authorized operations as per levels. It shall also possible to program the SPS/STP PLC from remote location, normally from engineering station at control room.

(i) Electric actuator based valves shall be controlled by PLC for ease of operation and isolation when required.

(j) Electrical Switchgears and other electrical parameters shall be interlinked with the PLC system.

(k) Level based pump operation shall be provided.

In addition to the above, the following services are also included in the Scope of the Contract:

(a) Supply of specified mandatory spare parts.

(b) Supply of specified standard and special tools.

(c) Furnishing of drawings, documents, operation and maintenance manual.





(d) Supervising and training Employer’s staff in the operation and maintenance of

instrumentation / automation / PLC & SCADA system under the present contract.

Drawings & Documents:

The successful bidder shall also furnish the following as-built documents in Six sets (Minimum 1 Set in Original and rest may be copies) in hard copies and Two sets in Soft Copy (shall be separate soft copy / CD for each item) along with material or submit separately to client prior to dispatch of material, for records purposes:

(a) Data sheet completely filled up along with all enclosures for each instrument / system.

(b) Network architecture drawing showing interconnection between redundant PLC

systems, SCADA PC and electrical MCC interfaces. List of Utility requirement.

(c) Instrument Cable Schedule.

(d) Dimensional / GA Drawing and location plan

(e) Hook – Up / Mounting / Installation Drawings.

(f) Quality Plan.

(g) Test Certificates (Prior to inspection / Dispatch of material).

(h) All relevant catalogues with detailed technical information including utilities or any other requirement for proper functioning of the instrument / equipment.

The contractor shall note that the material shall be procured strictly as per approved data sheets and drawings only. In case of any comments on the drawings, contractor shall resubmit the concerned documents again in required sets for approval of client / consultants. 1.3 SCOPE OF WORK- SPS

(a) SITC of PLC based control system with associated DI, DO, AI modules, alarm annunciation and UPS along with battery.

(b) SITC of Ultrasonic Level transmitter on sump and Differential level transmitter at screen. (c) The commissioning of pumps operation based on levels. Screen and conveyer belt

operation shall be based on differential level transmitter. (d) SITC of pressure gauge on each pump delivery. (e) SITC of Flow meter on common delivery header. (f) All interconnection between field instrumentation and electrical panel from PLC panel. (g) SITC of Instrumentation / Control Cable along with cable tray and treated earthing for

PLC.





2 SITE CONDITION AND VOLTAGE

CRITERIA

2.1 SITE CONDITION

All instrumentation equipment and installation shall be designed for the tropical climatic conditions and shall be suitable for continuous operation under the site conditions as described below for design purpose:

Maximum ambient temperature : 45 deg. C

Minimum ambient temperature : 5 deg. C

Design Ambient temperature : 45 deg. C (unless otherwise specified for specific components/equipment)

Relative humidity : 94%

Climate : Tropical, dusty, Corrosive

2.2 UTILIZATION VOLTAGES

Power Supply : 415V, 3 ph., 4 wire, 50Hz, AC

Control Voltage and Instrument Input supply : 110V AC / 24 V DC

lighting and space heating : 240V, 1ph, 2wire, 50 Hz, AC

Voltage Variation : +10%

Frequency Variation : + 3%

Combined Voltage & Frequency : +10%

2.3 EARTHING SYSTEM

Vendor shall provide separate earthing and bus bar connections for shield and panel electrical earthing.

Any special earthing requirements, if required, shall be provided by vendor during detailed engineering.

Provide a separate earthing arrangement (instrument earth) away from the power earth. Connect this arrangement to an (insulated) instrument earth bar mounted within the instrumentation compartment of the distribution board. Necessary earth pits shall be provided for by the same vendor.





3 APPLICABLE STANDARD AND

ABBERIVIATION

The following standard shall be applicable for Instrumentation work.

(a) AGA American Gas Association, Gas Measurement Committee

(b) ANSI/ASME American National Standards Institute/American Society of Mech.

Engineers

(c) B 1.20.1 Pipe Threads

(d) B 16.5 Steel Pipe Flanges and Flanged Fittings

(e) B 16.20 Ring Joint Gaskets and Grooves for Steel Pipe Flanges

(f) API American Petroleum Institute

(g) RP 521 Guide for pressure relieving and depressurising systems

(h) RP 526 Flanged steel safety relief valves

(i) RP 527 Seat tightness of pressure relief valves

(j) RP 551 Process measurement instrumentation

(k) S 2000 Venting atmospheric and low pressure storage tanks

(l) S 670 Vibration, Axial-Position and Bearing Temperature

(m) ASTM American Society for Tests and Materials

(n) BS British Standards

(o) BS-1042 Measurement of Fluid Flow in Closed Conduits

(p) BS-5308 Part-II Specification for PVC insulated cables

(q) DIN-43760 Temperature Vs. Resistance curves for RTDs

(r) DIN-19234 Electrical Distance Sensors; DC interface for distance sensors and

Signal converter

(s) DIN-50049 Document on Material Testing

(t) IEC 529 Classification of degree of protection provided by enclosures

(u) IEC 534-2 Industrial Process Control Valves - Flow capacity

(v) IEC 584-2 Thermocouples - Tolerances

(w) IEC 751 Industrial Platinum Resistance Thermometer Sensors

(x) IEC 801 Electromagnetic compatibility for industrial process measurement and

control equipment

(y) IS Indian Standard

(z) IS-5 Colours for ready mixed paints

The following abbreviations have been used in this specification.

(a) AC Alternating Current (b) Amp Amperes (c) CPU Central Processing Unit (d) DC Direct Current (e) DCDB Direct Current Distribution Board (f) Hz Hertz (g) ICA Instrumentation, Control and Automation (h) ICP Instrument Control Panel (i) I / O Input / Output





(j) Kg Kilograms (k) kV Kilovolts (l) mA Milliamps (m) MCB Miniature Circuit Breaker (n) MCC Motor Control Centre (o) met Meters (p) mm Millimetres (q) mv Millivolts (r) mwc Meters of Water Column (s) PC Personal Computer (t) PLC Programmable Logic Controller (u) RTD Resistance Temperature Detectors (v) SCADA Supervisory Control And Data Acquisition system (w) SPD Surge Protection Devices (x) UPS Uninterruptible Power Supply (y) V Volts





4 PARTICULAR REQUIREMENT OF

INSTRUMENTATION SYSTEM

4.1 GENERAL

The Contractor shall obtain all instruments from manufacturers of international standard. The design and quality of all instruments shall be fully suited to the conditions which will be met in service. The design of electronic instruments shall be in compliance with the electromagnetic compatibility requirements as per IEC-801. Field instrument shall meet with the process data requirements.

(a) The instrumentation and control system shall be manufactured and installed to ensure

highest standard of operational reliability. Major instrumentation shall be electronic type. All instruments shall be installed in accordance with the recommendations or instructions of the instrument manufacturer for particular application.

(b) All instruments shall be capable of carrying their full load currents without undue

heating. They shall not be damaged by the passage of fault currents within the rating of the associated MCB or through the primaries of their corresponding instrument transformers. All instruments shall be back connected and the cases shall be earthed. Approved means shall be provided for zero adjustment of instruments without dismantling.

(c) All voltage circuits to instruments shall be protected by MCB’s in each unearthed phase

of the circuit placed as close as practicable to the main connection.

(d) Analogue signals shall be 4-20 mA according to BS 5862: Part I 1986 or its latest edition. They shall operate over two wires and be isolated from earth. 1-5V DC signals shall only be permitted within the main instrument enclosure.

(e) The contractor shall furnish technical details / catalogues / drawings for the instruments

and panels offered for monitoring and control of the entire plant to client/consultant for their approval prior to procurement of the same. Contractor shall offer inspection for the instruments/panel offered by him and in case of waiver of inspection by the client / consultant, necessary test certificates shall be submitted for approval of client / consultant before clearing the material for dispatch. Contractor shall submit their inspection plan to client/consultant for their approval for this purpose.

(f) All instruments procured by the contractor as per the Engineer’s Incharge approval, and

those which perform similar duties shall be of uniform type and manufacture throughout the scheme (zone) in order to facilitate maintenance and the stocking of spare parts. Moving parts and contacts shall be adequately protected from the ingress of dust, and all instruments shall be protected by moisture and dust-proof cases including those mounted in panels. All equipment shall be suitable for its environment.

(g) Panel mounted receiving instruments shall be of the electrically operated miniature flush

mounting type unless other wise stated.

(h) Scales shall be clearly marked with black lettering and graduations on a white background. Instruments of the same type and range shall have identical scales. Instrumentation System shall be provided as per good engineering practice.





(i) Instruments as per following details and specifications shall be provided by vendor as a minimum. Quantities mentioned, if any, are indicative only and contractor shall provide all necessary instruments in required quantity as described in this section or as required for proper operation of the plant as described elsewhere in this tender or found necessary during detailed engineering in addition to below mentioned instruments and their locations/quantities i.e. variation in quantity as per site conditions.

(j) All instruments, gauges and control equipment shall be strictly procured as per the list of

approved vendors enclosed herewith as part of the tender documents.

4.2 ON-LINE DISSOLVED OXYGEN (DO) ANALYSER

TOTAL SPECIFICATION FOR ON-LINE DISSOLVED OXYGEN (DO) ANALYSER

A General 1 Location of Measurement At MBBR Unit. 2 Service Sewage /Sewage Sludge

Application 3 Function To measure & indicate the DO /

Transmit 4 Operating Temperature Ambient Temp 0 to 50 °C Max. 5 Operating Pressure Atm., Max. 150 psi 6 Installation Outdoor B. Electrodes & Electrode

Holder

1 Type of Sensor Photographic/ Optical / Luminescent Technology

2 Measurement (Calibration) Range

0 - 20 mg/l

3 Sensor Design Philosophy Shall offer long / extended life for sewage / sewage sludge Application, with minimum maintenance

4 Sensor Cable Integral Cable or with Water Tight Connector(IP-68) of specified length with or without junction box

5 Temperature Compensation Required, Automatic, In-built 6 Measuring Elements:

a Measuring Electrode Probe / Shaft MOC

SS 316 and Foamed Noryl equivalent. suitable as per mfr. Std.

b Sensor / other wetted parts

POM / Polybutyl Methachlorate or equivalent. Suitable as per mfr. Std.

Coating Luminescent / Fluorescent layer 7 Protection Class IP-68 8 Cable Length Min. 10 Mtr. (without junction box or

after junction box) 9 Process Connection

(Mounting) Type Suitable for immersion (open tank /

sump) type mounting with Ball Float Assembly

For

measurement

on Open Tank /

Measurement of DO at Open Tank / Sump shall be through suitable immersion mounting assembly






Sump along with Ball Float Assembly. Size 1" NPT or as per mfr. Std. for

immersion mounting. 10 Mounting Accessories

(Complete with adaptor, O rings, etc. of suitable MOC as required)

a Immersion Fitting MOC - Pipe / Fittings

PP / CPVC / SS304 or suitable. MOC Pipe mount immersion assembly, with pipe of required length. Swivel / Pivot / Pipe Clamp Assembly suitable for hand rail mounting in SS/equivalent. non-corrosive material. Shall be with Ball Float Assembly.

b Ball Float Assembly (along with Immersion Mount Assembly)

MOC PP / CPVC / SS or equivalent material

11 Calibration Certificate Required 12 Cleaning System Air blast cleaning system required C. Transmitter 1 Function Transmit and Indicate 2 No. of Inputs Channels Single / Dual 3 Transmitter Type Microprocessor based, User

Programmable, 2- Wire or 4-Wire type as per mfr. Std.

4 Location Field Mounting 5 DO Measurement: a DO Measurement Range 0-50 mg/l, programmable (Normal

measurement range shall be 0 - 3 mg/l)

b Accuracy + 0.2% of Measuring Range / Span or better

c Resolution Below 10 ppm: ±0.07 ppm or mg/L, ±0.1% saturation Above 10 ppm: ±0.01 ppm or mg/L, ±0.1% saturation

d Repeatability +/- 0.5% of Measuring Range / Span or better

6 Temperature Compensation:

a Temperature -10 to + 150 deg. C b Temperature Sensor Pt. 100 / Pt. 1000 / NTC 300 Ohm

Thermistor as per mfr. Std. with Temperature Element integral with DO Sensor

c Temp. Compensation Automatic / Manual d Accuracy ±0.2°C Measuring Range e Repeatability ±0.5% of span 7 Sensor Calibration Single Point Calibration in air or

other suitable as per mfr. Std. 8 Output Signal For DO, 4 -20 mA analogue / through 9 Communication Port For 4 -20 mA analogue






communication with PLC

Process Value Input to PLC

4 -20 mA analogue

Diagnostic Data Transfer to PLC

4 -20 mA analogue

10 Instrument Power Supply 100 – 240 Vac ±10%, 50/60 Hz 24 DC -15% + 20%

11 Cable / Conduit Entry 1/2" NPT Conduit 12 Local Indicator / Display DO & Temp. Graphic dot matrix LCD with LED

backlighting Trans reflective 13 Scale Graduation /

Measuring Units Engg. Units

14 Security Access Code Required, two password protected levels

15 Data Management SD Card service capable Memory Backup Flash memory

15 Protection: a Elec. Area Classification Safe b Enclosure Type &

Protection Class

NEMA4X / IP66

MOC Cast Alu. / Polycarbonate or SS as per mfr.Std. suitable for withstanding harsh environment

Paint Chemical Resistant / Epoxy Coating

16 Mounting Wall mounting / Pole/ pipe/ mounting

17 Operating Temperature 0 to 50 °C 18 Humidity 10 to 90% RH @40 °C (Non-

condensing)

D. Options / Accessories: 1 Mounting Accessories Required, Universal 2" Pipe and /

or Wall Mounting Kit 2 Tag Plate Required, SS 304 3 Cable Glands Required, IP-65/66 as a min., Ni-

Plated Brass / Polyamide 4 Plugs for addl. cable entries Close up Plugs shall be provided

for all unused cable entries, Ni-Plated Brass / Polyamide

5 Canopy for Analyser / Transmitter

To prevent from direct sun and rain

Required. MOC: FRP - min. 4mm thick / G.I. - min. 2mm thick





4.3 ON-LINE PH MEASUREMENT SYSTEM:

SPECIFICATION FOR ON-LINE pH MEASUREMENT SYSTEM

A. General 1 Location of measurement At Inlet of MBBR units, Outlet of UV

channel. 2 Service Sewage / Sewage Sludge

Application 3 function To measure & indicate the pH /

Transmit 4 Operating temperature Ambient, 70 °C Max. 5 Operating pressure Atm., Max. 6.9 Bar 6 Installation Outdoor B Electrodes & Electrode Holder 1 Type of sensor Differential / combination electrode

measurement 2 Measurement (Calibration)

Range 0 - 14 pH

3 Sensor cable Integral Cable or with Variopin /equivalent. Water tight (IP-68) connector with necessary cable

4 Temperature -10 deg. C to + 60 deg. C 5 Temperature compensation Required, Automatic, In-built 6 Pre-amplifier Integral or Remote as per mfr. Std. 7 Measuring Elements: a Measuring Electrode Material – Glass b Reference system Type- Double junction Electrolyte Material Ag/AgCl with saturated KCL (Gelled

Electrolyte) Ref. Junction / Diaphragm Porous PTFE / Silicore / as per mfr.

Std. c Soln. Ground Electrode Required Material Platinum / Titanium / as per Mfr. Std. d Temperature Sensor Type -Pt. 100 / Pt. 1000 / NTC 300

Ohm Thermistor / 3K Balco, as per mfr. Std.

8 Sensor (Shaft) Body MOC -Ryton (PPS) / PEEK / SS as per mfr. Std.

9 Calibration Certificate Required 10 Buffer Solution / Powder for

Sensor Calibration Buffer Solution / Powder of near about pH 4, pH 7 and pH 9 with NIST / DIN Std. traceability standards shall be provided in required quantity for periodic calibration of Sensor as per mfr. recommendation.

C Transmitter / Controller 1 Function Transmit and Indicate 2 No. of inputs Single / Dual 3 Transmitter type Microprocessor based, User

Programmable, 2- Wire or 4-Wire type as per mfr. Std.






4 Location Field Mounting 5 pH Measurement: a pH Measurement Range 0-14 pH, programmable b Sensitivity ± 0.01 pH c Stability 0.03 pH per 24 hours, non-

cumulative 6 Temperature Compensation: a Temperature Measurement Range 0 to 70°C or other suitable b Temperature Sensor Pt. 100 / Pt. 1000 / NTC 300 Ohm

Thermistor / 3 K Balco, as per mfr. Std. with Temperature Element integral with pH Sensor

c Temp. Compensation Automatic / Manual d pH calibration Semi-Automatic, 1 or 2 point

calibration using pre-configured buffer tables / Manual adjustment to grab sample

8 Control signal For pH, One per Channel 4 -20 mA analogue /

9 Communication port MODBUS 232/485 / Profibus DP V1.0

Process value input to PLC Through Communication Port as above to PLC

Diagnostic Data transfer to PLC Through Communication Port as above to PLC

10 Instrument power supply 100 – 240 Vac ±10%, 50/60 Hz 24 DC -15% + 20%

11 Cable / Conduit Entry 1/2" NPT Conduit 12 Local Indicator / Display pH & Temp.Backlit LCD Display 13 Scale Graduation / Measuring Units Engg. Units 14 Security Access Code Required, two password protected

level Data Management SD Card service capable Memory Backup Flash memory

15 Protection: Enclosure Type & Protection Class Weather

Proof to IP-66 as a minimum MOC Cast Alu. / Polycarbonate/ ss as per

mfr.Std. suitable for withstanding harsh environment

Paint Chemical Resistant / Epoxy Coating 16 Mounting Wall mounting / Pipe mounting 17 Operating temperature 0 to 60 °C 18 Humidity 10 to 90% RH @40 °C E Options / Accessories: 1 Mounting accessories Required, Universal 2" Pipe and / or

Wall Mounting Kit

2 Tag plate Required, SS 304 3 Cable glands Required, IP-65/66 as a min., Ni-

Plated Brass / Polyamide






4 Plugs for addl. cable entries Close up Plugs shall be provided for all unused cable entries, Ni-Plated Brass / Polyamide

5 Canopy for Analyser / Transmitter To prevent from direct sun and rain Required. MOC: FRP - min. 4mm thick / G.I. - min. 2mm thick

NOTE:

pH readings shall be continuously displayed along with Low / High pH level alarm and real time and historical trend shall be available for last 365 days at PLC HMI in main control room / CSCR, as a minimum.

PH Analyser along with Immersion fitting, Ball Float assembly, etc. complete in all respects as per above specifications.

4.4 FULL BORE ELECTROMAGNETIC FLOWMETER:

SPECIFICATION OF FULL BORE ELECTROMAGNETIC FLOWMETER

A Flow Measurement System

1 Type Full Bore Electromagnetic,

Microprocessor based.

2 Location After outlet of UV channel in Pipe.

3 Type of Excitation Pulsed or Dual Frequency Excitation

4 End Connection-Type Flange /

Wafer

Flanged

5 Process connection As per ANSI 16.5 / DIN standards,

face to face distance as per ISA

Standards

B Process / Service

1 Location of

Measurement

After outlet of UV channel in Pipe.

2 Service Sewage / Sewage Sludge application

3 Function To measure and indicate

instantaneous flow and totalized Flow

/ Transmit (Flow)

4 Pipe Size 600 mm ( or as per final engineering

design)

5 Pipe MOC CI / CS / SS

6 Operating

Temperature

Ambient , 50 Deg. C Maximum






7 Operating Pressure Atm., Maximum 6 Bar

8 Fluid Conductivity > 5 Micro S/cm

9 Specific Gravity Normal: 1.0 gms/cc, Maximum.: 1.1

gms/cc

10 Vacuum Possibility Nil

11 Installation Indoor or Outdoor, Below or above

Ground as per piping / site conditions

C. Flow Sensor / Tube / Element

1 Type of Sensor Full Bore type

2 Connection Size

3 Flange Materials CS or SS 304 or better as per mfr.

Std.

4 Paint, where

application

Chemical Resistant, Epoxy Painted

5 Upstream /

downstream clearance

Bidder to Furnish

D. Transmitter

1 Function Transmit and Indicate

2 Type Remote (Non-Integral) Type,

Microprocessor based, user

programmable, 2 Wire or 4 Wire type

as per mfr. Std.

3 Location Field Mounting

4 Flow / Velocity

Measurement Range

Maximum

Flow Velocity

Flow meter shall be capable to

measure flow with velocity up to max.

10 m/sec

Minimum

Flow Velocity

Up to 0.3 meter/sec. (shall measure

flow without loss of accuracy up to

0.5 m/sec and below that, accuracy

shall be as per mfr. Std.)

5 Accuracy Flow Velocity

>= 0.5 m/s

+/- 0.5% of Flow rate / Measured

value or better

Flow Velocity

< 0.5 m/s

As per mfr. Std. for flow velocity up to

0.3 m/s

6 Analogue Output

Signal

For Flow Isolated, 4-20 ma DC, Isolated

7 Load Resistance 500 Ohms maximum.

8 Pulse Output Required, for Totalized Output






9 Instrument Power

Supply

100 to 240 VAC +/- 10%, 50 Hz +/- 5

% or 24 V DC as per mfr. Std.

10 Cable / Conduit Entry ½ “ NPT

11 Local Indicator /

Display

Instant &

Total Flow

Backlit LCD Display (Inst. Flow and

8/9 digit internal totalized flow)

12 Scale Graduation /

Measuring Units

Engineering Units

13 Security Access Code Preferably Required, password

protected

14 Protection

a Elec. Area

Classification

b Intrinsically Safe

c Enclosure Type and

Protection

Class

Weather proof to IP-65 as a minimum

or better

MOC Cast Aluminium Or equivalent As per

manufacturer Standards suitable for

withstanding harsh environment


Requirement

for

Hazardous

Area

N.A.

15 Mounting Remote /

Integral

Remote Type

Type Wall mounting / Pipe mounting

16 Operating

Temperature

0 to 55 Deg. C.

17 Humidity

18 Vibration Conditions

19 Pipe not full detection /

Empty pipe detection

Required

E. Options / Accessories:

1 Mounting Accessories Required, universal 2” Pipe and / or

Wall Mounting Kit

2 Tag Plate Required , SS 304






3 Cable Glands Required, IP – 65/66 as a minimum,

Ni-Plated Brass / Polyamide

4 Plugs for addl. Cable

entries

Close up plugs shall be provided for

all unused cable entries, Ni-Plated

Brass / Polyamide.

5 Canopy for Analyser /

Transmitter

To prevent

from direct

sun and rain

Required MOC: FRP – minimum 4

mm thick / G.I – minimum 2 mm thick

6 Expansion Bellows Required at suitable location to enable

ease of removal / insertion of flow

meter for maintenance.

F. Specific Requirements for Flow meter Mounting

1 RCC / Brick Masonry

Chamber

In case of flow meter mounted outdoor

below ground level shall be provided

with suitable water proof chamber

constructed in RCC elevated

sufficiently above GL / HFL of

sufficient size for ease of operation

and maintenance. Chamber shall be

sized suitably to accommodate flow

meter and bellows in the same

chamber with necessary upstream /

downstream clearance requirement.

(Construction of chamber will be in

scope of civil work)

2 Modification Work in

piping / Supply of

flanges on pipe

Shall be included in the scope of

contractor, as required, for mounting

and proper operation of Flow meter

(includes providing the necessary

straight run of upstream / downstream

pipe, total 6 meters length maximum,

with necessary flanges on flow meter /

pipe side). MOC of straight run and

flanges shall be either C.I or MSEP for

sewage / sewage sludge / water

application. For rest applications, it

shall match with pipe MOC.





4.5 ULTRASONIC FLOW METER:

SPECIFICATIONS FOR ULTRASONIC FLOW METER

A. General

1 Location of Measurement

Open channel (FMC), After UV system.

2 Service Sewage / Sewage Sludge application.

3 Function To measure & indicate Flow

4 Operating Temperature

Ambient, 50 °C Max.

5 Operating Pressure Atm.

6 Installation Outdoor

B. Flow Transmitter / Sensor

1 Measuring Principle Ultrasonic Non-Contact type Level Measurement, Time of Flight method

2 Type Microprocessor based, User Programmable, 2-Wire type, with Integral or Remote Transmitter as per Mfr. Std.

3 Measurement Range As per depth of channel / flume

Up to 5m

-Blanking Distance Max. 0.4m

-Sensor Meas. Range Sensor Range shall be Actual Meas. Range + Unit

Selection Free Board + Blanking Distance. Sensor shall be mounted above the top of unit / tank by at least the blanking distance i.e. entire unit depth shall be measurable.

4 Temperature Compensation

Built-in, Automatic

5 Output Signal -Output Signal proportional to

Level or Flow 4 -20 mA analogue / Shall be proportional to Level with necessary Level to Flow Linearisation curves / calculation

6 Accuracy + 0.5% of Span

7 Resolution + 3mm or suitable as per mfr. Std.

8 Protection:

a Elec. Area Classification

Safe

b Intrinsically Safe N.A.

c Enclosure Type & Protection Class

Weather Proof to IP-65/66 as a minimum






MOC Aluminium / PBT or as per mfr. std. suitable

for harsh / corrosive atm.


Requirement for Hazardous

N.A.

d Sensor MOC PVDF or equi. as per mfr. std.

Prot. Class - Weather Proof to IP-67/68

Remote Tx.

9 Cable Length -Sensor Remote Tx. Version only

10m min.

10 Process Connection 1.5" / 2" NPT threaded or 3" or 4" Flanged or as

(Mounting) per mfr. Std.

11 Programmer Built-in or Hand held type to be supplied with each instrument

12 Communication Port

For communication with PLC

Profibus / Modbus / other suitable as per mfr. Std. Necessary coupler, converter card & accessories as required for network connectivity shall be included.


Through Communication Port as above to PLC

Diagnostic Data transfer to PLC


13 Instrument Power Supply

24V DC or as per mfr. Std.

14 Cable / Conduit Entry 1/2" NPT or M20 or equivalent. as per mfr. Std.

15 Local Indicator / Display

Level or Flow LCD Display

16 Scale Graduation / Measuring Units

Engg. Units

17 Flow Conversion / Control unit shall have built-in algorithms for

Measurement by instrument

converting level to flow or shall have facility to program level vs. flow curve (linearisation curve), with signal output proportional to flow or alternately control unit shall measure and transmit level with necessary level / flow linearisation curves and calculations through PLC / SCADA.

C. Options / Accessories:

1 Tag Plate Required, SS 304

2 Cable Glands Protection Required, IP-65/66 as a min.






MOC Ni plated Brass or Polyamide (IP-67/68 only)

3 Plugs for addl. cable entries

Close up Plugs shall be provided for all unused cable entries, SS316 / Polyamide / equivalent.

4 Canopy for Transmitter / Sensor (Remote Tx. Version)

To prevent from direct sun & rain

Required. MOC: FRP -min. 4mm thick / G.I. -min. 2mm thick.

4.6 ULTRASONIC DIFFERENTIAL LEVEL TRANSMITTER

SPECIFICATIONS FOR ULTRASONIC DIFF. LEVEL TRANSMITTER

A. General

1 Location of Measurement

To measure differential liquid level across Screen / process

2 Service Sewage / Sewage Sludge / Water & other such liquid application

3 Function To measure & indicate Diff. Level / Transmit

4 Operating Temperature Ambient, 50 °C Max.

5 Operating Pressure Atm.

6 Installation Outdoor

7 No. of Transmitters per Set

Level meas. Type

Two Nos. for Level Measurement type with Diff. Level calculation / measurement in PLC

Diff. Level meas. Type

One No. with in-built diff. level measurement / transmission

B. Diff. Level Transmitter / Sensor

1 Measuring Principle Ultrasonic Non-Contact type Level Measurement, Time of Flight method

2 Type Microprocessor based, User Programmable, 2- Wire type, with Integral or Remote Transmitter as per Mfr. Std.

3 Measurement Range As per depth of tank / sump

Up to 5m

-Blanking Distance Max. 0.4m

-Sensor Meas. Range Sensor Range shall be Actual Meas. Range + Unit

Selection Free Board + Blanking Distance. Sensor shall be mounted above the top of unit / tank by at least the blanking distance i.e. entire unit depth shall be measurable.






4 Temperature Compensation

Built-in, Automatic

5 Output Signal Level 4 -20 mA analogue

-Output Signal proportional to

Integral Tx. / Level Type Version Remote Tx. / Diff. Level type Version

Shall be proportional to Level for each of the two transmitters per Set with Diff. Level calculation through PLC / SCADA.

Shall be proportional to Diff. Level for each transmitter

6 Accuracy + 0.5% of Span

7 Resolution + 3mm or suitable as per mfr. Std.

8 Protection:

a Elec. Area Classification

Safe

b Intrinsically Safe N.A.

c Enclosure Type & Protection Class

Weather Proof to IP-65/66 as a minimum

MOC Aluminium / PBT or equi. as per mfr. std. suitable for harsh / corrosive atm.


Requirement for Hazardous Area

N.A.

d Sensor MOC PVDF or equi. as per mfr. std.

9 Cable Length -Sensor Remote Tx. Version

10m min.

10 Process Connection (Mounting)

1.5" / 2" NPT threaded or 3" or 4" Flanged or as per mfr. Std.

11 Programmer Built-in or Hand held type to be supplied with each instrument

12 Communication Port For communication with PLC

Profibus / Modbus / other suitable as per mfr. Std. Necessary coupler, converter card & accessories as required for network connectivity shall be included.



Diagnostic Data Transfer to PLC


13 Instrument Power 24V DC or as per mfr. Std.






Supply

14 Cable / Conduit Entry 1/2" NPT or M20 or equi. as per mfr. Std.

15 Local Indicator / Display

Level or Diff Level, in

LCD Display

mm or m

16 Scale Graduation / Engg. Units

Measuring Units

17 Instrument Configuration

Integral Tx. / Level

2 Nos. per Set (i.e. per application)

Type Version

Remote Tx. / 1 No. Remote Controller (Transmitter) with 2 Nos.

Diff. Level Type Transducers (Sensors) per Set (i.e. per

Version application)

C. Options / Accessories:

1 Tag Plate Required, SS 304

2 Cable Glands Protection Required, IP-65/66 as a min.

MOC Ni plated Brass or Polyamide (IP-67/68 only)

3 Plugs for addl. cable entries

Close up Plugs shall be provided for all unused

cable entries, SS316 / Polyamide / .

4 Canopy for Transmitter /

To prevent from Required. MOC: FRP -min. 4mm thick / G.I. -min.

Sensor (Remote Tx. Version)

direct sun & rain

2mm thick

4.7 PC SYSTEM FOR SCADA

SPECIFICATION FOR PC SYSTEM FOR SCADA

SR. Name of Item Technical Description

1 Microprocessor Pentium –IV, 1MB L2 cache, 2 GHz Core 2 Duo,533MHz FSB

2. Power Supply 230V AC

3. Mounting Desktop, 32 “, LED Screen

4. Ports 1 Parallel Port, 1 Serial

5. USB Port 4USB ports

6. Ethernet Interface HP 10/100 Ethernet Controller

7. Operating System XP Professional

8. Memory 2 GB RAM

9. Mother Board SIS66IFxCHIPSET Mother Board or Latest

10. CD Drive 48 X CD ROM

11. Hard Disk 160 GB

12. CD / DVD RW DRIVE 48x CD ROM

13. Mouse 2PS2 port





SPECIFICATION FOR PC SYSTEM FOR SCADA

SR. Name of Item Technical Description

14. Monitor 28” TFT

15. VGA 1VGA

16. Line in/out 1Line in/out

17. Printer A4 Size Laser colour Printer.

4.8 UNINTERRUPTED POWER SUPPLY

SPECIFICATION FOR UPS

Sr.No. Name of Item Technical Description

1. Make As per approved vendor list

2. Type Dual Redundant system

3. Model Vendor to specify

4. Rated Power at PF= 0.7 As required

INPUT

5. Nominal Input Voltage 220/230/240 VAC

6. Input Frequency 45-65 Hz auto selecting

7. Input Voltage Range 160-280 VAC typical load Single Phase

OUTPUT

8. Output Voltage 110 VAC single phases.

9. Output Voltage Regulation +/- 5% dynamic

10. Efficiency at Full Load 90% typical

11. Output Frequency (sync’d to mains)

50 or 60 Hz, +/- 3 Hz (Auto select default)

12. Bypass Automatic routed through Servo Controlled Voltage Stabiliser (SCVS)

13. Overload capacity 125% - 1 Minute , 150% - 30 seconds

BATTERIES

14. Battery Type Maintenance-free sealed Lead-Acid Battery

A Backup Period 60 minutes Backup

B Number of cells per unit 4

C Nominal cell voltage 12V, 17Ah

D Final cell voltage 12V, 17Ah x 4

E Mounting arrangement Battery rack

14. Operating Conditions 0-95% non-condensing humidity; 0-40 (deg) C

15. On Line thermal dissipation (BTU/hr)

478

LED INDICATORS

16. Mains On Available

17. Inverter On Available

18. Battery on Charge Available

19. Low Battery Imminent Available

20. Inverter Overload Available

21. Load On Inverter Available

22. Load on Auxiliary Supply Available





SPECIFICATION FOR UPS

Sr.No. Name of Item Technical Description

23. Capacity 2 kVA

24. Qty 1 No.





5 INSTRUMENTATION CONTROL PANEL

5.1 CONSTRUCTION

(a) The Control Panel (Main PLC panel) shall be free standing & enclosed cubicle type with backdoors. Minimum size of the control panel shall be considered 2100mm H*800mm W* 800mm D.

(b) Instruments to be mounted on control panel shall be as per this bid document as a minimum. Control Panel shall be constructed from 2/3 mm CRCA sheet steel reinforced with angle from frame of 50 x 50 x 4mm. Panel exterior shall be painted admiralty grey as per IS-5 No. 697.

(c) Panel interior shall be pale cream as per IS-5 No. 352. Panels shall be designed to ensure adequate ventilation without permitting entry of vermin and ingress of dust. No process fluid of any kind, except instrument air, shall enter the instrument cubicle. All cable entry shall be from the bottom of the panel. Also power supplies greater than 230 V shall not enter the LCP.

(d) The internal layout of the panel/cabinets shall be designed considering proper approach for each item for maintenance. Following point must be taken into consideration while deciding the internal layout:

1. All wiring inside the panels shall be housed in covered non-flammable plastic

raceways arranged to permit easy accessibility to various instruments for maintenance adjustment, repair and removal. No raceway shall be more than 70% full.

2. Separate wiring raceways shall be used for power supply wiring, DC and low level signal wiring.

3. Distance between terminal strips and side of the panel parallel to the strips up to 50 terminals: Min. 50 mm.

4. Distance between terminal strip and top and bottom of cabinet: Min. 75 mm.

5. Distance between two adjacent terminal strips: Min. 100 mm.

6. Distance between cable gland plate and the bottom of strips: Min. 300 mm.

7. 20% spare terminals shall be provided as a minimum.

8. Signals interfacing with PLC are to be protected with fuse TBs and Digital outputs are to be routed through potential free relay boards.

(e) Cable colour philosophy to be followed for PLC panels for internal wiring. Distinct cable colour to be followed for 230 VAC power, 24 V DC, analogue, digital, RTD, TC signals.

(f) Printed ferrules to be used for internal and external panel wiring.

(g) All cables routed to PLC panel to be tagged with aluminium tag plates at PLC panel

side.





(h) Control Panel shall be provided with fluorescent type lighting fixtures controlled from

totally enclosed door operated switches for internal illumination of the panel cabinets.

(i) Contractor shall provide with necessary cooling fans and cut-outs covered with appropriate filters for necessary air changes to limit temperature rise within panel to 5 deg C over ambient temperature.

(j) Contractor shall consider necessary power conditioning unit (UPS / Voltage Stabilizer- CVT etc.) to prevent power fluctuation and surge to damage the instruments as well as other electronic components.

(k) For cases where PLC is to be mounted, panel shall be designed suitably as per PLC manufacturer’s recommendation. Necessary marshalling boxes may be considered if required as per design.

(l) Control room shall be provided with air conditioners of sufficient numbers/quantities as recommended by Air conditioner manufacturer based on room size, heat load, etc. However, a minimum of 2 nos. 1.5TR capacity air conditioner shall be provided for all main control room at STP. Windows in control room shall be provided with suitable louvers to prevent direct heat / glare. False ceiling shall be provided in PLC / SCADA room.

5.1.1 Microprocessor Based Alarm Annunciator

(a) An alarm and annunciator in the instrumentation panel shall be provided as required to indicate low level, high level and high-High levels in sumps and tanks, motors, power failure, fault in VFD, as well as other required abnormal phenomena sensed by field instruments in location suggested in the process section of this bid specification.

(b) The specification of alarm and annunciator shall conform to the following:

1. Microprocessor based logic

2. Optically isolated inputs

3. Integral/split architecture

4. 3 U Standard size card with DIN 41612 two part Euro Connectors

5. Make / Break to alarm selectable by DIP switch

6. On-board input status indication

7. Power supply shall be 230 V AC

8. One enclosure

9. The no. of channels per card shall be 4

10. 2 LED Indications per window each are having 24V, 2W rating.

11. Photo type set legends. Having black letters against a milky white background.

12. Test, Accept, and reset push buttons provided on the front and facial and also wired up to terminals on the rear side

13. Dual tone solid-state 10W hooter with selectable tones and volume control.

14. The window size shall be 60 x 71 mm





15. The operating range shall be 0 to 50˚C and humidity shall be RH 95% nm condensing

16. Field terminations shall be on plug in connectors or type

17. Sixteen most popular sequences shall be built which shall include first out, ring back, auto and manual next type segments

18. Auto reset of alarm condition before accept shall be provided

19. Fully integrated unit with integral plug in power supply unit, rear terminals singings, door display with front accessibility of module power supply unit, and lamps

20. 18 gauge pressed steel with removable rear cover for chassis, 18 gauge pressed steel with punched windows, finished matt black for hinged front assembly and 20 gauge hinged assembly finished glossy stove enamelled white for lamp assembly shall be provided

21. 20% spare windows shall be provided in addition to the requirement

22. Alarms shall be initiated by the opening and closing of voltage free contacts which shall remain unchanged throughout the period in which the alarm conditions exist

23. Alarm circuits shall be capable of conversion from open-healthy to open-alarm or vice versa by a simple modification after installation without any additional parts or special equipment

24. Each alarm shall initiate the operation of both visual and audible devices. The sound intensity of each audible device shall be suitable for the maximum sound level of its environment

25. The operation or acceptance of one alarm shall not inhibit the operation of the audible device or the flashing of the appropriate alarm indicator if a future alarm condition occurs

26. The alarm circuitry shall be arranged so that spurious or transient alarm states persisting for less than 0.5 seconds do not initiate any action

27. Isolation facilities shall be provided for the hooter.

28. Enclosures for Field Instruments will be having with weather protection of IP65.

29. All field mounted instruments has to be provided with weather protection coverings. Suitable material to be chosen as per the environmental conditions.

5.1.2 Surge Protection Devices

(a) Current transformer shall be cast – resin type. All secondary connections shall be

brought out to terminal blocks where wye or delta connections will be made. Current transformers shall conform to IS: 2705 and comply with the specification.

(b) They shall have sufficient thermal and mechanical capacity to withstand the maximum momentary current rating of the breakers. The secondary terminals shall be of the solder-less clamp type. All current transformers shall be properly identified for polarity with standard marking symbols. The minimum acceptable accuracy class for metering and relaying shall be in accordance with the list.

(c) CT's shall be mounted over stationary primary disconnects. If multi-ratio CT’s all leads

shall be wired out to shorting type terminal strips.





(d) Magnetization curves and the secondary resistance shall be provided for each type and

rating of current transformer. Also all technical details, routine test reports of CTs shall be furnished with the offer.

5.1.3 Intrinsic Safety Barriers

(a) Intrinsic safe barriers shall be provided for all analog signals coming from hazardous area.

(b) The following points must be taken into consideration while selecting I.S. barriers:

1. Safety barriers must be based on entity concept.

2. Each instrument in the loop must be certified intrinsically safe by a statutory authority.

3. Each input/output in the loop shall have a separate I.S. barrier. No barrier shall be shared between two loops/inputs/outputs.

4. All safety barriers shall be isolating type, as far as possible.

5. All safety barriers shall be of MTL make or equivalent. The following barriers may be selected, unless otherwise necessary because of technical reasons:

6. Analogue inputs: MTL 3041 or equivalent. (Repeater Power Supply for Transmitters)

7. Analogue outputs: MTL 3042 or equivalent (4-20 mA Repeater)

8. Contact inputs: MTL 3011/2210B or equivalent

9. Contact outputs: MTL 2241/3021 or equivalent (Solenoid Valves)

5.1.4 Receiving Indicators / Controllers

(a) All indicators/controllers shall be electronic (microprocessor based) programmable

indicator and shall be mounted on the control panels. Notes: Indicating instruments shall indicate various process parameters as required.

5.2 PLC SYSTEM

(i) Programmable logic controller (PLC) shall be microprocessor based with 32 bit processor and be fully programmable and capable of performing control relay logic, including timing, counting, sequencing, and interlocking.

(ii) The PLC system shall be hot redundant type.

(iii) The PLC shall be high performance processors suitable for real time process application.

High inherent reliability, self-checking, error-recovery and trouble-shooting features shall be some of the features of PLC.

(iv) The PLC shall have a modular / modular chassis design which allows for ease of future expansion. The processor module shall be easily removed from the I/O chassis for service or repair. The I/O chassis shall have slots for installing I/O cards, communications, or other special function modules. All I/O cards and modules shall be





capable of being installed in any open slot in the chassis or DIN rail mounted. Module and channel level diagnostics should be standard feature.

(v) The PLC shall have a suitable power supply and can be easily serviced or replaceable. The system shall be capable of being powered on 120VAC / 230VAC / 24V DC as per manufacturer’s standards.

(vi) The PLC shall be rated to operate from 0 to 60 Degrees C, with a humidity rating of 5 to 95% (non-condensing). All module circuit boards shall be encased and protected such that, when properly installed, they are not exposed to accidental contact by personnel or other objects.

(vii) The PLC shall be of high quality and reliability with replacement processors, power supplies, chassis, I/O and specialty modules that are readily available on an urgent or emergency basis. All PLC products shall be fully supported and available for purchase for up to Ten (10) years from the date of the original system purchase.

(viii) PLC system shall be supplied with following minimum spare cards i.e. CPU=01, AI/AO/DI/DO=07 each, RTD=01, Power supply=04 Nos., Communication Module=04No. , O/P relay board=04 Nos.

(ix) Field I/O signals wire will be terminated on marshalling terminals blocks in a separate marshalling cabinet or section. They will not be terminated directly on the I/O module front connectors.

5.2.1 Basic Process Function

Real-time control of output points for turning on and off digital devices such as motor starters and solenoids.

(a) Read the status of real world digital inputs from limit switches, float switches, and other

field devices.

(b) Real-time control of analog process control variables.

(c) Read the status of real world analog set points and feedback values.

(d) Perform timing, counting, sequencing, and interlocking functions for pump/equipment control.

(e) Process local alarm handling functions.

(f) Math and Advanced Functions.

(g) Four function math in floating point or signed integer format.

(h) Convert to/from BCD

(i) Data comparison and manipulation.

(j) Scaling from integer data into engineering units such as flow, level and pressure.





(k) Full PID Instructions for control of process control variables such as flow, level and pressure.

(l) ASCII instruction set for interfacing to ASCII devices.

(m) Compute Instruction which executes a mathematical expression and can be used for

totalizing functions.

(n) Trigonometric and Exponential math functions.

(o) Real-Time Calendar Clock for time stamping alarms and events.

(p) Automatic restart of the system on resumption of power shall be provided.

(q) The processor shall have solid state RAM memory to store the application program, process data, and alarm status. This memory shall have both capacitor and battery backup in the event that input power to the processor is lost. It shall also have the capability of EEPROM backup which automatically reloads the memory on a power cycle. The processor shall have the ability to automatically control the process on a power cycle, provided there are no major or unrecoverable processor faults.

(r) Processor RAM memory shall be adequate and selected with at least 25-30% spare

capacity for application program storage over the actual requirement, and also should be expandable for future expansions. Bidder shall demonstrate the spare capacity at the time of commissioning and after completion of entire logic development for the plant controls and monitoring as per the logic write-up to be furnished by client / consultant to the successful bidder after award of work.

(s) Sufficient program memory and data memory space shall be provided. System

initialization and application software shall be stored in EEPROM or EPROM with necessary hardware. Running data shall be stored in a RAM with internal battery back-up.

(t) No Analog re-transmission shall be used to feed PLC analog input. Analog output of PLC

shall only be used to provide analog signal to panel mounted indicators. All process parameters and electrical parameters as specified in the tender shall be monitored at HMI and necessary controls actions shall be initiated.

5.2.2 Input / Output Module

(a) Standard DIN Rail / rack mounted I/O modules with plug-in cards shall be provided. Field

wiring shall be terminated in screwed terminal blocks and interconnected to the processor I/O system with preferably pre-fabricated cables and plug in card type connectors.

(b) Spare I/Os shall be wired to the terminal block of the control panel. Provision shall be made for future expansion of extra I/O modules of the installed capacity.

(c) Discrete Input Cards: Solid-state input circuits rated for 10-30VDC operation. Cards must

be available in 8 or 16 or 32 point configurations and shall source current to the field device. Each input point shall have a status LED which indicates the ON or CLOSED condition for that field sensor or switch. Cards must have removable terminal strips so





that module can be easily replaced without disturbing the field wiring online while system is running.

(d) Discrete Output Cards: Solid-state output circuits rated for 24VDC operation. Cards must

be available in 8 or 16 or 32 point configurations and shall be able to operate a control relay. Each output point shall have a status LED which indicates the ON condition of the output. Cards must have removable terminal strips so that module can be easily replaced without disturbing the field wiring. The control Relay-contact shall be rated for 5A @240VAC or 5A @125VDC. The control relay shall have a LED indication to show the status of the control relay.

(e) Digital Input and Digital output closed algorithm shall be 50 ms to 500ms and Open loop

algorithm shall be 50 ms to 2 sec. They shall be configurable from 50ms to 500ms.

(f) Analog Input Cards: Analog inputs shall capable of reading in 0 to 20mA or 4 to 20mA signal. The A/D converter shall provide a minimum 16 bit resolution over the full range from module minimum to module maximum. The scan time of Analog loops will be 50ms to 500ms.

(g) Analog Output Cards: Analog Outputs shall be capable of outputting 0 to 20mA or 4 to

20mA signals. The A/D converter shall provide a minimum 12 bit resolution over the full range from module minimum to module maximum. The Scan time of Analog loops will be 50 ms to 500 ms.

(h) All cards shall have optical isolation between digital and field side circuitry.

(i) Some of the common features of the I/O modules shall be as follows:

Filters for noise rejection.

Surges withstand facility as per standards.

All the modules shall be of addressable type.

(j) Programming for pump control system of SPS will be in scope of STP contractor. The logic and other details will be given by TMC during detailed engineering.

5.3 COMMUNICATION

(a) Minimum one port for High performance Ethernet communication at 10/100 Mbps network for data acquisition, SCADA / communication network connectivity in future shall be provided.

(b) Modbus and / or high performance Ethernet port, as applicable as per mfr. Standard for local program upload / download, on-line editing, peer-to-peer messaging, data acquisition and man machine interface.

(c) Modbus port for connectivity with multifunction meters for power parameter monitoring

provided in HT and LT panel.





5.4 PROGRAMMING SOFTWARE

(a) The programming software should help in maximizing performance, save on project development time and improve productivity.

(b) The programming software should be able to operate on latest Windows-XP / Windows 98, or Windows-NT operating system.

(c) The programming software shall have Online editing features which is used to modify the application program while the process is still operating.

(d) Features like drop and drag editing to copy instructions or part of a program from within a project or across projects to save project development time.

(e) Make system backup copies while the system is online.

(f) Upload and download programs to the PLC.

5.5 SCADA SPECIFICATION

(a) The Local SCADA system shall consist of a server cum operator station, an additional operator station as necessary and shall be provided with user friendly software for performing monitoring and control of the STP.

(b) The SCADA System shall be provided with proprietary Microsoft Windows based Supervisory Control And Data Acquisition (SCADA) software. The software package chosen shall be branded and written for applications in water industry and shall have a proven record of use for STP having similar applications

(c) The SCADA System shall consist of industrial grade PC and SCADA software package. A line printer shall be provided for alarm and event logging and report preparation:

(d) The SCADA System shall provide the following facilities:

(i) Display status of all the items of the pumping station viz. pumps, MBBR,

clarrifloculator, tube settler, blowers, valve, UV system, switchgears etc. in a graphical and tabular format (i.e. running, stopped, fault etc.)

(ii) Display analogue values on the appropriate graphic screen

(iii) Annunciate alarms along with time of occurrence of alarm. The software chosen shall

have a comprehensive alarm handling capability with the ability to annunciate, acknowledge, sort and maintain a historic record of current and past alarms including details of when the alarm occurred, when it was acknowledged and when it returned to normal

(iv) Provide facilities for the operator to:

Select duty and standby drives





Adjust process set points

Select operation modes

Acknowledge alarms

View a journal of alarms

Display the duty / standby status drives

Display set points

(v) Provide real time and historic trending of analogue values

(vi) Provide data archiving of all analogue values

(vii) Prepare daily and weekly reports, providing details of daily and weekly throughputs

against numbers of pump / blowers/ centrifuge running hours and power usage.

(viii) Display total running hours of drives.

(ix) Any additional features required to assist in the effective and efficient operation of the STP.

(x) Password protection shall be provided for security of operations, change of set points and changes in the software. There shall be various levels of security.

(xi) Printing of alarms and events along with the time of occurrence.

(e) The graphic display editor shall have the ability to attach, as a minimum, the following control to objects: blinking colors, visibility, rotation, horizontal and vertical movement, resizing (width and height), fill and touch. The graphic display editor shall have facility / support for web browser integration.





6 INSTALLATION AND COMMISSIONING

6.1 FIELD MOUNTED INSTRUMENT

6.1.1 General

(a) Field mounted instruments shall, where possible, be hermetically sealed. If this is not possible, they shall be of weatherproof construction with heavy cast cases. Transmitters and similar equipment shall be further enclosed in purpose made weatherproof; glass reinforced fire-retardant polyester resin cabinets.

(b) Particular regard shall be paid to the case of access to all instruments. Serial number/calibration plates shall be visible when the instrument is in its cabinet.

(c) Field mounted instruments shall be complete with all mounting brackets, pillars, fittings and fixings to complete the installation.

(d) Instrumentation and associated equipment shall be installed in accordance with the

manufacturer's instructions. The Contractor shall obtain in the field all information relevant to the placing of process control work and in case of any interference with other work; he shall proceed as directed by the Employer’s representative and furnish all labour and materials necessary to complete the work in an approved manner.

(e) The work shall be executed in full accordance with local codes and rulings.

(f) All piping to and from field instrumentation shall be provided with necessary unions, test tees, couplings, adapters, and shut-off valves.

(g) Brackets and hangers required for mounting of equipment shall be provided. They shall be installed in a workmanlike manner and not interfere with any other equipment.

(h) The screen on each process instrumentation cable shall be continuous from source to destination and be earthed as directed by the manufacturer of the instrumentation equipment but in no case shall more than one earth point be employed for each screen.

(i) The Contractor shall submit for review before ordering, details of construction, weights, physical dimensions, performance characteristics and maintenance access requirements of all switchboards, distribution boards and control panels, separately mounted motor drives and all other instruments and equipment.

6.1.2 Field Transmitter

(a) All field transmitters shall have accuracy of 0.25% of span and shall be provided with output meter / output gauge at the signal output.

(b) Smart transmitters when used shall be used in analog mode only. Smart transmitters when specified shall have accuracy of 0.1% of span, as a minimum or other as specified in detailed specifications of individual instrument.





(c) DP Type Flow Transmitter if used for congealing, corrosive and highly viscous services shall have Diaphragm Seal element with Capillary.

(d) Transmitter shall be capable of delivering rated current into external load of at least 600 ohms when powered with 24V DC nominal voltage.

6.1.3 Instrument Connection

(a) Electrical cable entry shall be ½” NPT (F) or other as specified. Suitable cable gland

shall be used.

(b) End connections shall meet the following unless, otherwise specified:

(c) Threaded end connection shall be NPT as per ANSI / ASME B.1.20.1

(d) Flanged end connection shall be as per ANSI / ASME B16.5

6.1.4 Instrument Power Cables

(a) All power & control cables for use on medium / low voltage shall be heavy duty type, aluminium / copper conductor. PVC (XLPE may also be accepted) insulated, inner sheathed, armored and overall PVC sheathed as described below.

(b) The Power and Control cables shall have the following minimum overall cross sectional areas:

1. Medium Voltage Power 6 sq.mm. (Aluminium) / 1.5 sq.mm. (Copper)

2. Control Cables 1.5 / 2.5 sq.mm. (Copper)

(c) Cables shall be sized based on the maximum continuous load current and the voltage

drop. The derating due to ambient air temperature, ground temperature, grouping and proximity of cables with each other etc. shall be taken into account.

(d) Below grade cables in paved areas shall be in concrete lined trenches with concrete covers having proper slope and suitable drainage arrangement to avoid water collection. In unpaved areas cables shall be in lined trenches or directly buries in ground. In hazardous areas and transformer bays, trenches shall be completely filled up with sand. Concrete lined cable trenches shall be sealed against ingress of liquids or gases wherever the trenches leave a hazardous area or enter control room or substation.

(e) The cable trenches shall be sized depending upon the number and voltage grade of

cables. Where underground cables cross roadways, pipe sleepers at grade, etc., they shall be protected by being drawn through PVC sleeves/ducts or suitable RCC Pipes to provide a permanent crossing. Pipes laid for mechanical protection shall be sealed at both ends.

(f) High voltage, medium/low voltage, control and signal cables shall be separated from each other by adequate spacing or running through independent pipes, trenches or cable trays as applicable.





(g) Cable trays, racks and trenches shall be sized to allow for 20% future cables. Cable installation shall provide minimum cable bending radii as recommended by cable manufacturer. Cable route markers shall be installed at every 30m interval all along the routes of directly buried cable trench and also at locations where the direction of cable trench changes.

(h) All power and control cables shall be of continuous lengths without intermediate joints. Where joints are unavoidable, these shall be provided with the permission of Engineer-InchargeIncharge. All cables shall carry tag numbers for easy identification. In case of control cables all cores shall be identified at both sides by their terminal numbers using PVC ferrules as per interconnection diagrams.

(i) Sequential marking of the length of the cable in meters shall be provided on the outer sheath at every one meter. The embossing/engraving shall be legible and indelible.

(j) Control cables having 6 cores and above shall be identified with prominent and indelible Arabic numerals on the outer surface of the insulation. Color of the numbers shall contrast with the color of insulation with a spacing of maximum 50mm between two consecutive numbers. Color coding for cables up to 5 cores shall be as per IS.

(k) Instrument Signal cables shall be stranded tinned copper conductors, twisted pair shielded with overall screen (or individual screened and collective screen IOAS in case of multipair cables) with high density polyethylene (HDP) insulation and armour protections.

6.1.5 PVC Insulated Power Cable

(a) Cables of 660V/1100V grade, multi-core cables, multi-stranded high conductivity

annealed 1.5 / 2.5 sq.mm or higher size as specified, stranded, tinned copper conductor, PVC insulated, PVC inner sheath, armoured with galvanised steel wire overall sheathed with PVC, conforming to IS:1554 & IEC:189 Part I & II shall be used for instrument power supply. (Higher diameter aluminium conductor where specified shall be of solid conductor).

(b) The conductors of nominal area less than 25 sq.mm shall be circular and above that it may be circular or sector shaped.

(c) The inner sheath shall be of vulcanized rubber proofed or plastic tap shall not be harder than PVC used for insulation. This shall conform to requirements of type ST-1 of IS: 5831.

(d) Armoring shall be applied over inner sheath, where specified and shall be of galvanized steel strip as per IS 3975. The armor shall be applied as closely as possible with left hand direction of lay. For cables having diameter over the inner sheath less than 13 mm, the armor shall be of galvanized round steel wires or galvanised steel strips. The dimension and resistance of armor shall be as per IS 1554 Part 1.

(e) The outer sheath of the cable shall be applied by extrusion and shall be of black color PVC compound conforming to requirements of type ST-1 compound of IS. 5831. The thickness of outer PVC sheath and its tolerance shall be as per IS 1554 (Part – I). To protect the cable against rodent and termite attack, suitable chemicals may be added into the PVC Compound of the outer sheath.





6.1.6 Cable Accessories (a) All accessories like cable glands, lugs and terminal markings etc. shall be used

conforming to relevant standards / as specified. For 650/1100 V grade cables, Ni-Plated Brass Double Compression type glands WP to IP-65 as a minimum and tinned copper crimping type lugs shall be used.

6.1.7 Cable Laying (a) HV, MV / LV, control and signal/communication cables shall be separated from each

other by adequate spacing or by running through independent pipes, trenches or cable trays. Cable Laying and termination shall be such that chances of cable getting damaged are remote.

(b) LT cable shall be laid in cable tunnel or tray racks or buried underground with appropriate protection. Black shall indicate the neutral, while red, yellow and blue for three different phases. All LT cables when laid on the cable racks shall be properly dressed and clamped as required without crisscrossing and unnecessary overlapping. Cables shall be properly dressed and clamped.

6.1.8 Junction Boxes

(a) In order to make the most economic use of cable ladder/tray and duct capacity, multicore

cabling shall be utilized in order to connect instrumentation groups by using suitably located sub-distribution junction boxes.

(b) The junction boxes shall have weather protection suitable for the area in which they are to be installed and for the type of circuit. They shall be readily accessible for maintenance and clearly labeled. Junctions boxes shall be constructed of die cast aluminum and provide degree of protection as per IP 65.

(c) Separate cables shall be used for digital and analog signals.

(d) Wires and terminals for the digital and analog signals shall be segregated within junction boxes.

6.2 TEST

The test plan shall be submitted for approval as part of the project plan. The Contractor shall provide the services (free of charge) of the servicemen, all special tools, calibration equipment and labour to perform the tests during commissioning, performance guarantee test etc. Certified copies of the test reports shall be furnished in duplicate to the Employer’s representative. After installation, check-out and final adjustment of all panels, instruments, meters, monitoring and control devices, a performance check shall be made. Meters shall be tested at 0 percent, 25 percent, 50 percent 75 percent and 100 percent of scale, as required. All status and alarm switches as well as all monitoring and control functions shall also be checked. Each device on the Process and Instrumentation diagrams must be signed by the





Employer’s representative as being acceptable. Testing shall be done from the signal source to the final element or device including all field wiring. If, during running of the tests, one or more points appear to be out by more than specified parameters adjustments or alterations shall be made as necessary to bring equipment up to specification performance. Following such adjustment, the tests shall be repeated for all specified points to ensure compliance.

6.3 INSPECTION

All instruments and PLC / SCADA panel shall be inspected as per approved inspection plan for calibration and operation prior to dispatch (Test Certificate Review). Unit shall be operationally checked for its proper operation along with the job instruments, panels and shutdown system before despatch in this material requisition.





7 LIST OF APPROVED MAKES FOR

INSTRUMENTATION EQUIPMENTS - STP

Sr.No. Equipment Approved Makes

1.0 PLC ALLEN BRADLEY / SIEMENS / SCHNEIDER / HONEYWELL / ABB

2.0 SCADA ROCKWELL / SIEMENS / SCHNEIDER / HONEYWELL / ABB

3.0 VFD ALLEN BRADLEY / SIEMENS / SCHNEIDER / HONEYWELL / ABB / DANFOSS

4.0 HUMAN MACHINE INTERFACE

ROCKWELL / SIEMENS / SCHNEIDER / HONEYWELL / ABB

5.0 INSTRUMENT CONTROL PANEL

SAI TECHNOLOGIES / POSITRONICS / /PYROTECH / ABB / SIEMENS/ LOGICON

6.0 PANEL ENCLOSURE RITTAL / ENCLOTEK / HOFFMAN

7.0 ALARM ANNUNCIATOR PROTON ELECTRONIC/ MINILEC

8.0 ETHERNET SWITCH DATA LINK / ROCK WELL

9.0 UPS APC / HP/ HI RELL

10.0 SMF BATTERIES PANASONIC / EXIDE / BASE / PRESTOLITE

11.0 COMMUNICATION CABLES D-LINK/ FINOLEX/ LAPP CABLE / DELTON

12.0 PC HP / DELL / ACER / IBM

13.0 LASER PRINTER HP / DELL

14.0 MINIATURE RELAY ABB / OMRON / SIEMENS

15.0 PANEL WIRES FINOLEX / HAVELL’S / RR KABLE

16.0 OPERATOR INTERFACE UNIT

SCHNEIDER / ROCKWELL / SIEMENS / ABB / HONEYWELL

17.0 SIGNAL MULTIPLIERS MTL OR EQUIVELENT

18.0 MCB ABB / SIEMENS / BCH / L&T / C&S / CG-SCHNIDER

19.0 INDICTING LAMPS L&T / SIEMENS / IEC / TECHNIK / EE / C & S / CG





Sr.No. Equipment Approved Makes –SCHNIDER / STANDARD

20.0 PUSH BUTTON & PUSH BUTTON STATION

L & T / BCH / SIEMENS / TECHNIK / C & S

21.0 TERMINAL BLOCKS ELMEX / PHOENIX CONTACT / CONNECTWELL / WAGO

22.0 PANEL ILLUMINATION PHILIPS / BAJAJ / CROMPTON / C & S

23.0 MINIATURE RELAYS ABB / OMRON / SIEMENS / PHONIX / ROCKWELL

24.0 MODULAR SWITCHES, SOCKETS & ACCESSORIES

CLIPSAL / MK / TOYAMA / ANCHOR ROMA

25.0 PVC CONDUITS AND ACCESSORIES

PRECISION / CLIPSAL / KALPDIP

26.0 ELECTROMAGNETIC FLOW METER WITH TOTALIZER

E+H / KROHNE / SIEMENS / YOKOGAWA / ABB

27.0 DIFFERENTIAL LEVEL TRANSMITTER WITH INDICATOR

ABB / SIEMENS/ YOKOGAWA / E+H / EMERSON / RTL

28.0 ULTRASONIC TYPE LEVEL TRANSMITTER WITH INDICATOR

ABB / SIEMENS/ YOKOGAWA / E+H / EMERSON / RTL

29.0 PRESSURE TRANSMITTER WITH INDICATOR

ABB / SIEMENS/ YOKOGAWA / E+H / EMERSON

30.0 PRESSURE SWITCH E&H / ABB / SIEMENS / SWITZER

31.0 DIFFERENTIAL PRESSURE TRANSMITTER

ABB / E&H / EMERSON / HONEYWELL / SIEMENS / YOKOGAWA / RTL

32.0 TURBIDITY MEASUREMENT

HACH INSTRUMENTS/ ABB/ FORBES MARSHALL / FISHER ROSEMOUNT / OMEGA / E&H

33.0 PH MEASUREMENT ABB / E+H / EMERSON/ HACH / POLYMETRON (FORBES MARSHALL) / YOKOGAWA / DENFOSS / RTL

34.0 FREE CHLORINE ANALYSER

ABB / E+H / EMERSON/ HACH / POLYMETRON (FORBES MARSHALL) / YOKOGAWA

35.0 DISSOLVED OXYGEN (DO) ANALYSER

ABB / E+H / EMERSON/ HACH / POLYMETRON (FORBES MARSHALL) / YOKOGAWA / RTL





7.1 LIST OF ACCEPTABLE MAKES OF EQUIPMENTS (PUMPING SWTATION)

Sr.No

Equipment Brand / Name

1. Ultrasonic Type Level Measuring system

Nivo (Toshniwal) / Endress + Hauser / Pune Techtrol /SBEM / RTL / Forbes Marshall.

2. Instrumentation and Control Cable Thermopad, Hyderabad. / Delton / Asian / Cable Corporation ltd. / Associated Cables ltd. / Thermo Control system

3. Programmable Logic Controller Allen Bradley / Honeywell / Siemens

4. Local Control Panel / Control- Automation & Instrumentation system Integrator

Sai Technologies / Autocon Engineers Pvt. Ltd. / VSAS / Technocrafts

5. Alarm Annunciator Insta alarm controls / Industrial Control & Appliances / Aplab / Minilec

6. Electromagnetic Flow Measurement Nivo (Toshniwal) / Endress + Hauser /Forbes Marshell/ RTL

7. Differential Level Transmitter Nivo (Toshniwal) / Endress + Hauser / Pune Techtrol/SBEM/ RTL/ Forbes Marshall.

NOTE: All the makes which are approved under MJP, PWD & MSEDCL are permitted.