efw-wsp-83002-rv-d01

HOLDS AND INPUT STATUS

DOCUMENT NUMBER TITLE STATUS

Document No. EFW-WSP-83002

Area Elgin/Franklin Wellhead

Topsides

Discipline MATERIALS

Doument Type SPECIFICATION

Contract No. CA9233

Rev. Date Rev.Description Prepared by

Checked LE PM Client Review

D01 10/2/98 APPROVED FOR DESIGN JWH AB JWH

SPECIFICATION FOR PROTECTIVE COATING

ELGIN/FRANKLIN WELLHEAD TOPSIDES EFW-WSP-83002 - REV D01 SPECIFICATION FOR PROTECTIVE COATINGS PAGE 2 OF 46

REVISION LIST REVISION DESCRIPTION OF CHANGES D01 Document Transferred From EAF-WSP-83002 Rev.D03

with amendments

Printed on 25 February 2002 14:42


CONTENTS

1. GENERAL

1.1 Introduction

1.2 Scope of work

1.3 Conflicts

1.4 Definitions

2. REFERENCE SPECIFICATIONS

2.1 Statutory Requirements

2.2 British Standards

2.3 International Standards

3. SERVICE CONDITIONS

3.1 Locations

4. DETAILED REQUIREMENTS

4.1 Materials

4.2 Equipment

4.3 Surface Preparation

4.4 Preparation Of Materials For Application

4.5 Application

4.6 Pollution Control

5. GALVANISED SURFACES

6. INSPECTION

7. TESTS

7.1 Environment

7.2 Blast standard

7.3 Thickness

7.4 Galvanising

7.5 Adhesion

7.6 Holiday test

8. REPAIRS

8.1 General


8.2 Inadequate Coating Thickness

8.3 Contaminated Surfaces

8.4 Coating Damage Not Exposing Steel Substrate

8.5 Coating Damage Exposing Steel Substrate

8.6 Repair Of Galvanised Surfaces

8.7 Repair Of Thermally Sprayed Aluminium (TSA) Surfaces

9. LIST OF APPROVED PAINT MANUFACTURERS [HOLD]

ADDENDUM A COATING SYSTEMS System 1 Coating System For Internal Surfaces Of Diesel Storage Tanks - Epoxy System. System 2 Jacket atmospheric zone, Topsides Structural Steelwork And Facilities Operating At

Temperatures Up To 120°C - Under Thermal Insulation - TSA Coating. System 3(a) Carbon Steel Topside Facilities Operating At Temperatures Up To 120°C - Not

Thermally Insulated - Epoxy Coating. System 3(b) Carbon Steel - Underside of Cellar Deck - Epoxy Coating. System 4 Aluminium Helideck - Epoxy Coating System 5 Carbon and Stainless Steel Topside Facilities Operating At Temperatures Between

121°C And 350°C - TSA Coating System 6 Carbon Steel Topside Facilities Operating At Temperatures Between 351°C And

550°C - TSA Coating System 7 Austenitic Stainless Steel Topside Facilities Operating At Temperatures Between

51°C And 120°C - Not Thermally Insulated - Epoxy Coating System 8 Glass Flake Internal Lining Of Steel Tanks And Vessels - Glass Flake Epoxy Coating System 9 Galvanised Steel Surfaces, Excluding Gratings - Epoxy Coating System 10 Galvanised Steel Gratings - Bituminous Coating System 11 Heavy Duty Non-Slip Steel Deck Surfaces - Epoxy Coating System 12 Light Duty Non-Slip Steel Deck Surfaces - Epoxy Coating System 13 Jacket, Caissons and J-tubes External Splash Zone Coating System - Glass Flake

Epoxy System System14 Submerged Zone of the Jacket Structure - Epoxy System

ADDENDUM B COLOUR SCHEDULE [HOLD]


1. GENERAL

1.1 Introduction This specification defines the minimum technical requirements for the Elgin PUQ

for:

i) The painting and coating of carbon steel and, where relevant, stainless steel, nickel or copper based alloys and aluminium surfaces.

ii) The internal lining of tanks.

This includes the requirements for environmental conditions during application,

surface preparation, inspection, repair work and documentation, in addition to the coating/painting/lining systems and procedures for the topside facilities.

Finally, this specification defines colours required for painted coated surfaces and

the colour banding necessary for pipework identification.

1.2 Scope of work The scope of work covered by this specification includes:

i. Underside of Integrated Deck & Primary Steelwork not coated with Passive Fire Protection (PFP). For details of the coatings to be used under the PFP refer to specification ELP-SSP-72005.

ii. All structural, deck and pipework surfaces and, where relevant, galvanised

steel, iii. stainless steel, nickel or copper based alloys and aluminium surfaces. iv. Non slip surfaces. v. Galvanised surfaces to include ductwork. vi. Temporary steelwork to be removed offshore. vii. The jacket structural steelwork including j-tubes, caissons and conductors,

but excluding risers and rubber lined appurtenance guides. Notes:

1. Intact galvanised surfaces referenced in ii) and iv) above shall not be overpainted except for areas expressly identified and specified by the Purchaser.

2. All galvanised and stainless steel bolts shall be left uncoated unless shown otherwise on the drawings.


All vendor supplied equipment shall be supplied with a certificate detailing the coating system applied, the colour, thickness and all appropriate test results.

1.3 Conflicts All conflicts between the requirements of this specification, related contract

documents, codes and standards, shall be referred to the Purchaser for clarification. Where conflicts occur the order of precedence shall generally be:

1. This specification 2. Minimum Code/Standard requirements.

1.4 Definitions The following definitions shall apply to this specification:

“COMPANY” shall mean Elf Exploration (UK) plc “PURCHASER” shall mean Kvaerner Oil & Gas Ltd., acting as agent

for Elf Exploration (UK) plc “SUPPLIER” shall mean the person, firm or company to whom the

order is issued and who is responsible for the application of paint coatings as described in this specification.

“MANUFACTURER” The Manufacturer is the organisation which

produces the coating system(s).

2. REFERENCE SPECIFICATIONS The codes and standards referred to in the requisition and/or data sheets shall be

taken to mean the latest edition of that Code or Standard, including addenda, supplements or revisions, except where noted.

2.1 Statutory Requirements Health and Safety at Work Act 1974. Construction (Working Places) Regulations 1966 Offshore Construction - Booklet No 12 (Health and Safety Executive) Control of Substances Hazardous to Health Regulations (1988) HSE Guidance Notice EH-15 Threshold Limit Values HSE Guidance Notice EH-16 Isocyanates: Toxic Hazards & Precautions


HSE Guidance Notice MS-8 Isocyanates - Medical Surveillance Factories Act 1966 Section 4 & 63 Ventilations of Workroom etc. HSE Offshore Installations Guidance on Design and Construction and

Certification, Fifth Edition 1995 Flammable Liquids Regulations SI 1709 Control of Pollution (Special Wastes)

Regulations 1980 SI 2252 Merchant Shipping Prevention of

Pollution by Garbage Order 1988 CAP 437

2.2 British Standards BS 729 Hot dip galvanised coatings on iron and steel articles BS 2569 Part 2 Sprayed Metal Coating. Protection of Iron and Steel: BS 7079 Surface finish of blast cleaned steel for painting BS 4800 Paint Colours for Building Purposes BS 5378 Safety Colours and Safety Signs BS 5750 Quality Systems

2.3 International Standards ASTM A123 Zinc (hot galvanised) coatings on products fabricated

from rolled, pressed and forged steel shapes, plates, bars and strip.

SSPC US Specifications of the Steel Structures Painting Council SIS 05 59 00 Pictorial Surface Preparation Standard for Painting Steel

Surfaces NORSOK M-CR-501

Surface Preparation and Protective Coating


3. SERVICE CONDITIONS

3.1 Locations This coating specification is for use on the Elgin Franklin Wellhead Topsides,

located in the UK Sector of the Central North Sea.


4. DETAILED REQUIREMENTS This section deals with the detailed requirements for materials, equipment, surface

preparation and application of paint or coating systems covered by this specification. Any differences between this specification and the paint/coating manufacturers issued information shall be highlighted to the Purchaser for clarification.

4.1 Materials

4.1.1 Receipt and Storage Flammable products and thinners are to be stored in accordance with the

Flammable Liquids Regulations, away from combustible materials, and all precautions taken to avoid creating a fire hazard.

All materials shall be delivered to the Supplier in the original containers with labels

intact and seals unbroken. They shall be kept in a safe, well ventilated storage space assigned for this purpose and which is to be kept clean and tidy.

Any manufacturers instructions regarding storage shall be strictly adhered to. Any paint materials susceptible to freezing shall be stored in a heated area.

4.1.2 Abrasives Abrasive blast cleaning using dry sand is not permitted. Where air operated blasting equipment is used, the operators hood/headgear is to be

ventilated by clean cool air served through a regulator filter to prevent blasting residues being inhaled by the operator.

4.1.3 Paint All painting materials shall be purchased by the Supplier from the list of paint

manufacturers listed in section 9. The Supplier shall advise the Purchaser of the selected paint manufacturer together with all procedures necessary to comply fully with this specification.

All paints in any one particular paint system, whether shop or site supplied, shall

originate from one paint manufacturer so that products from different manufacturers are not mixed within the same finish.

All safety precautions detailed in the paint manufacturers literature shall be strictly

adhered to. Each container shall be date coded so that the shelf life expiry date can be readily

checked. Covers are to be kept on opened containers when not in use.


Paint which had been livered, gelled or otherwise deteriorated during storage, will not be used. Thixotropic materials which may be stirred to obtain normal consistency are satisfactory for use.

4.2 Equipment The Supplier is responsible for supplying and maintaining in good conditions all

plant equipment, protective equipment and tools necessary to carry out his work in an efficient manner and to provide such consumable materials and parts necessary to maintain his plant, and tools, in good working order.

4.3 Surface Preparation

4.3.1 General Preparation of surfaces to be coated must remove all foreign matter and

contaminants to bring the surface to the state specified for the application of coatings.

Unless otherwise indicated in the systems listed in addendum A, surface

preparation shall not take place at temperatures below 5°C, when the relative humidity is greater than 85%, when the metal surface temperature is less than 3°C above the ambient dew point, or later in the day than can be prime coated before the end of the working period or a maximum of 4 hours. Surface preparations may also be suspended by the Purchaser if adverse weather conditions are likely to develop before painting could be carried out.

Satisfactory lighting facilities shall be provided for all stages of preparation for

painting. Prior to commencement of surface preparation, surface irregularities such as weld

spatter, rough capping, undercuts, slag, rough edges, burrs, laminations and laps will be removed by the Supplier and made smooth. Oil and grease contamination shall be removed by either wiping or scrubbing the surfaces with rags or brushes wetted with white spirit and then wiping down with clean dry cloths. Alternatively, proprietary emulsifying agents may be used for this purpose and the surface must be allowed to dry out before proceeding with further preparation and painting. All drill holes should be completed, de-ragged and solvent cleaned prior to blast cleaning.

Steel surfaces shall be prepared by blast cleaning to the appropriate quality

specified in each system specification. The compressed air supply used for blasting is to be free of water and oil.

Adequate separators and traps shall be provided and these shall be kept emptied of water and oil.

Accumulations of oil and moisture are to be removed from the air receiver by

regular purging.


Surfaces shall be made free of abrasive and dust before they are primed or initially

coated they shall be blown with dry compressed air, or wiped or vacuum cleaned free. It is of the greatest importance that no grit or foreign matter is left on the cleaned steel.

A 300mm wide strip of un-coated blasted surface is to be left between primed and

un-blasted surfaces to prevent damage to the newly dried coating when additional blasting is done. When blast cleaning is resumed, the 300mm strip of previously blasted surface will require only a light brush blast to remove any rust that might remain. Cleaning shall be accomplished by holding the cleaning nozzle in a direction away from the coated surface.

Intended weld lines/areas are to be masked to 50mm either side of weld before

priming, unless otherwise indicated in the coating systems listed in Addendum A. Blasting will continue a minimum of 25mm into adjoining coated surface. Where extensive rectification has been necessary on abrasive blast cleaned surfaces,

the dressed areas are to be re-blasted to remove all rust and slag to provide adequate paint key.

The preparation of newly galvanised surfaces when specified by the Purchaser to be

overpainted, and damaged galvanised coatings prior to repair shall be prepared by very thorough degreasing and then etched with a phosphate pre-treatment solution such as T-wash or a 2 pack etching primer. Weathered galvanised surfaces - i.e. where no chemical residue from the galvanising process remains - shall be prepared by steel wire brushing to remove all contaminants, and then followed by degreasing with white spirit.

Surfaces delivered to the construction site with a temporary or holding primer only

shall be degreased and re-blast cleaned (unless specified otherwise) to the required standard.

4.3.2 Blast Cleaning : General Only dry blast cleaning techniques shall be employed, and blasting shall be carried

out by experienced operators with approved equipment and clean facilities, including suitable flooring, lighting and efficient grit/dust removal. The Supplier shall comply with regulations in force regarding the use of abrasives for blast cleaning.

The type and size of abrasive, which must be free from dust, salts and other

impurities, will be selected in accordance with BS 7079 to give a surface amplitude of 50-75 microns with a maximum of 100 microns for rogue peaks, unless otherwise specified in a particular paint/coating system. Metallic abrasives must be regularly checked and sieved to remove fines and impurity. A non-metallic grit is always to be used for blast cleaning internal surfaces of piping.


Blast cleaning of stainless steel, nickel and nickel based alloy surfaces, where specified for painting, shall be blast cleaned using a metallic free abrasive (free from chlorides) to give a surface profile between 75-100 microns. Copper slag abrasives are not acceptable.

Grit blasting shall not be done in areas close to painting operations and/or wet

coated surfaces to prevent dust or grit contamination. Maximum speed and most effective cleaning is obtained by systematic even

blasting. Work shall be blocked out by areas to a planned pattern so that preparation and application can be programmed to ensure that each area is blast cleaned to the correct standard and then receives the prime coat within the specified time.

All welded areas and appurtenances are to be given special attention for the

removal of welding flux in crevices. Welding silvers, laminations and underlying mill scale exposed before and during grit blasting operations are to be removed by the best mechanical means and the edges smoothed or rendered flush.

4.3.3 Power Tool Cleaning - SSPC SP3 Prior to power tool cleaning, oil, grease and salts shall be removed by solvent

cleaning. Care is to be exercised in the use of power tools to prevent excessive roughening of the surface and the formation of ridges and burrs. Excessive power wire brushing of mill scale produces a burnished surface not suitable for coating.

Chipping, scraping and steel wire brushing using manual or power driven tools

shall only be used where blast cleaning is impractical and with the approval of the Purchaser.

Such preparations shall be in accordance with the photographic illustrations in SIS

05 59 00 Grade C ST 3.

4.3.4 Solvent Cleaning - SSPC SPI The solvent must not contain paraffin or other slow evaporating additive, and

should be the solvent recommended by the manufacturer of the intended paint system.

All metal surfaces which do not require blasting or power tool cleaning and all

galvanised metal shall be thoroughly cleaned to remove all foreign matter. Prior to solvent cleaning, soil, cement spatter, salts or foreign matter (other oil or

grease) shall be removed by suitable means. After blast cleaning or disc cleaning and prior to priming, all surfaces are to be

examined for traces or smudges of oil or grease. If any exist they shall be removed by solvent washing and then re-cleaned.

All bolt holes shall be solvent cleaned prior to blasting and plugged or coated. No

acid washes or other cleaning solutions or solvents are to be used on metal surfaces


after they have been blast cleaned; this includes inhibiting washes intended to prevent rusting.

4.4 Preparation Of Materials For Application The paint manufacturers recommendations regarding the mixing of paint prior to

application shall be used. Paints containing high density fillers shall always be mixed in an agitated pressure

pot which will be kept not lower than the spray gun at all times. All other coating materials shall be mixed by mechanical agitators for a sufficient time to thoroughly mix pigment and vehicle and bring the material to a uniform consistency.

Hand mixing shall only be permitted for quantities up to 2 litres, and a thorough

mixing procedure must be used to completely incorporate the heavy liquid material at the bottom. Where pigment separation readily occurs, provision shall be made for continuous mixing during application.

Paint shall not be thinned except as recommended by the paint manufacturer, and

only the thinners or reducer recommended shall be used. The entire contents of the paint container shall be used in the mixing to ensure correct proportion of paint and pigment, and paint shall be thoroughly mixed immediately prior to application.

Prior to and during preparation and painting at the application site the Contractor

shall be responsible for the protection by drop cloths, sheets, covers or effective shields of all structural and equipment surfaces (including pipework and ducting) from any damage of a mechanical nature, or paint overspray and droppings. Such protection shall be carried out to the satisfaction of the Purchaser. Such surfaces shall include but not be limited to valve spindles, glass faced pressure gauges, light fittings, cables, racking, grating, nameplates, signs and instrument panels.

Spraying units are to be earthed and non-conductive hoses used. Any further

precautions, as may be required, shall be used by the Contractor to avoid build up of static electricity.

4.5 Application Painting/coating shall not take place in the open under adverse weather conditions,

e.g. rain, fog, snow or frost, or when such conditions are likely to occur before the paint has cured or become dry. For outdoors painting/ coating shall not take place when the air temperature is below 5°C, (10°C for epoxy coatings); or when the relative humidity is greater than 85% in the immediate vicinity; or when the metal surface temperature, without heat assistance, is less than 3°C above the ambient dew point, or higher than the maximum application temperature recommended by the paint manufacture. Shop painting shall not take place when air temperature is below 10°C.

Painting/coating may also be suspended due to wind blown dust, injurious airborne

elements or other weather circumstances at the discretion of the Purchaser.


If coating materials require the addition of a catalyst, the pot life under application

conditions shall be clearly stated on the label and this pot life must not be exceeded. When the pot life limit is reached, the spray pot must be emptied, material discarded, the equipment cleaned and new material catalysed.

The paint or coating shall be applied in the manner detailed by the manufacturer,

e.g. brush, roller, conventional, airless spray or in the case of Thermally Spayed Aluminium (TSA) by flame or arc spray process , and within strict observance of the time intervals between coats.

The method of application shall be selected to ensure that the paint or coating is

applied in a uniform manner to the prescribed film thickness without any runs, sags or other blemishes. Particular care shall be taken to ensure that sharp edges and welds are adequately coated to the full film thickness. To achieve this, sharp edges and welds shall be precoated (stripe coated) immediately prior to application of each layer of paint or coating.

The coating systems are detailed in “Addendum A - Coating Systems” and the

minimum dry film thickness is given for each coating together with the minimum total system dry film thickness. The minimum dry film thickness of the total system shall be met. For individual coats the average dry film thickness shall not vary by more than ± 20%, or in accordance with the manufacturers recommendations.

Where the quality of the film is impaired by excess film thickness (wrinkling, mud

cracking or general softness) the Supplier shall be responsible for removing the unsatisfactory paint coating and for its re-application.

In all instances where two or more coats of the same paint are specified, such

coatings shall be of contrasting colours so that each stage of the work can be readily identified and film thickness’ determined accordingly.

The spray equipment to be used shall meet the recommendations set forth by the

coating manufacturers for applying each specific coat layer. Lines and pots are to be thoroughly cleaned when adding new materials, and only the paint manufacturer's recommended cleaning agent is to be used.

All equipment for spray application must be inspected and approved by the

Purchaser's inspector before any application is begun. Suitable working regulators and gauges shall be provided for air supply to the

pressure pot and the air supply to the pressure gun. Zinc rich primers shall be sealed with a tie coat as soon as practical after complete

curing has taken place (generally within 7 days, unless agreed with the Purchaser's Inspector), to avoid salt or chemical contamination of the porous zinc rich primer.


The tie coat shall be selected to ensure sound adhesion to the zinc rich primer and be compatible with the finishing coat process. When overcoating with aluminium silicone paint, a tie coat is not necessary.

Thermally Sprayed Aluminium (TSA) Coatings shall be sealed with the appropriate

sealant as soon as practical after TSA application and inspection. In application of material, each spray shall overlap the previous pass by 50%.

Large surfaces are always to receive passes in two directions at right angles to each other (cross hatched). Large surfaces in this instance are defined as anything in excess of 2m². Spray width adjustment on the gun and re-adjustment of atomising pressure at the regulators shall be made until the desired spray pattern is found. Each coat is to be applied uniformly and completely over the entire surface. Any runs or sags are to be brushed out immediately or the paint is to be removed and the surface resprayed.

Unless otherwise required by the coating systems listed under Addendum A,

coating shall not be applied within 50mm of edges/areas prepared (masked) for welding. Further coating shall not be applied within 50mm of unblasted areas.

Intervals between coats shall comply with the manufacturer's specified time for

thorough drying and shall generally be kept to the minimum in order to prevent contamination between coats. Where contamination occurs between coats, this must be completely removed generally by washing with detergent solution or equivalent, and rinsing with clean water.

The manufacturers recommendations shall be ascertained in respect of re-cleaning,

such as sweep blasting or washing with fresh water. Applied coatings are to be protected from inclement conditions such as rain, snow,

fog and wind blown dust, and other factors such as condensation and debris from nearby other working.

If necessary temperature and humidity must be controlled with temporary covers,

heaters, de-humidifiers to ensure all coatings are correctly cured. Temporary steelwork which is to be removed offshore shall be given a sweep blast

and paint applied to 50 microns DFT.

4.6 Pollution Control Paints and primers contain substances which are listed as special wastes under the

Control of Pollution Act. It is the Supplier’s responsibility to ensure the disposal of waste products conform to the relevant legislation.

Where painting is carried out offshore the waste products shall be segregated from

other wastes offshore, in order to comply with onshore legislation.


Additionally, no paint, containers or associated applicators shall be dumped overboard.

5. GALVANISED SURFACES The items to be galvanised in accordance with the following requirements are:

• stair treads • stairway gratings • grating walkways • kick plates • hand rails and supports • ladders and cages

Surfaces listed above shall be hot dipped galvanised in accordance with BS 729

after cutting, shaping and welding has been carried out. The weight of deposited zinc shall not be less than the following:

Material Thickness (mm)

Deposited Zinc Each Side

Weight (g/m²) Coating Thickness (mm)

1.5 to 1.9

2.0 to 2.9

3.0 to 3.9

4.0 to 4.9

5 and thicker

430

500

600

750

900

60

70

84

105

126

In order to achieve these minimum coating figures the Supplier shall consider the

material composition, surface finish and surface preparation prior to coating. Small areas of galvanised coating damaged by cutting, welding, drilling or any

preparation during fabrication, erection, transportation or installation shall be repaired as detailed in Section 8.6.

All galvanised items shall be QA/QC inspected, any item not complying with the

above may be rejected by the Purchaser.

6. INSPECTION


The whole of the work shall be inspected on a continuous basis by the Supplier who shall record and report the results of all his inspection and tests to the Purchaser, in writing or on a read-only disc or electronic copy.

Inspection records shall include but not be limited to:

• Identification of individual items being painted/lined • Detail of the area in which work is taking place • Recording atmospheric temperature, relative humidity, dew point and steel

temperature at least 4 times per day at the location where work is taking place

• Recording quality of surface preparation and profile (by surface replica technique) shall be carried out on prepared steel surfaces at least 4 times per shift or once every 20m2 which ever is the greater. For the internal of pressure vessels the test/recording frequency shall be twice the above.

• Recording colour and dry film thickness of paint coatings on each individual item being painted.

• Recording approval of all items finish painted/lined/coated to the specification by the inspector's signature.

• Recording any repairs or further painting/lining/coating that may become necessary after finished work.

All equipment used during the course of this inspection shall be approved by the

Purchaser's Inspector prior to the start of work. Visible blast standards and blast profile shall be prepared for each system by the

Supplier with reference to BS 7079 and Swedish Standard SIS 05 59 00. Surface profile or anchor pattern shall be in accordance with the individual paint system requirements. These shall be used as a reference for all testing.

The Supplier will provide paint thickness gauges for both wet paint and dry paint.

The "Elcometer", Mikrotest" or equivalent type shall be used for dry film thickness whereas simple gauges such as wet combs are acceptable for wet paint. These gauges will be calibrated and checked at periodic intervals to the satisfaction of the Purchaser, against procedures agreed by the Purchaser.

7. TESTS

7.1 Environment A psychrometer shall be used to measure the relative humidity before blasting and

painting can be carried out.

7.2 Blast standard Surface amplitude shall be measured by direct assessment of replicas taken from

the surface. At the beginning of each work, blast-cleaned steel panels shall be


prepared complying with the surface preparation requirements and subsequently used as a reference.

Where other methods of on-site determination of profile are used the instruments

concerned must be calibrated against the reference steel panels. For field measurements, replica tape or comparitors and a portable micrometer shall

be used.

7.3 Thickness The wet film thickness shall be spot checked in random areas as an initial

indication of the required dry film thickness. The minimum sampling frequency for dry film thickness checking shall be as

follows:

1. Uninterrupted surfaces - 3 minimum, or one sample every 2 metres 2. Interrupted surfaces - 3 minimum equispaced around the junction

The dry film thickness of individual coats and of the total coating system shall be

checked by means of a magnetic type thickness gauge. The limits specified in Section 4.5 shall be adhered to.

The thickness gauge shall be calibrated on a minimum twice daily basis, in

accordance with NORSOK M-CR-501. The thickness of the sealer coat of TSA coatings shall be using a suitable method

developed by the Supplier. Wet film thickness gauges shall be employed during the application. Where absorption into the aluminium surface is too rapid to allow meaningful wet film measurements to be made, a polished steel plate may be coated in parallel with production coating. Wet and dry film thickness measurements shall be correlated between this plate and the aluminium surface. Under no circumstances shall the finished dry film thickness be less than 25µm.

7.4 Galvanising Test certification for galvanised surfaces shall be supplied by the Supplier in

accordance with BS 729 - letters of conformity are not acceptable. The extent of testing shall be in accordance with BS 729.

7.5 Adhesion The adhesion of TSA coatings, before sealing, shall be checked once per shift using

a tensile adhesion tester, such as a Hate meter. A minimum of three separate tests shall be conducted on a one m2 area, generally the test shall be carried out on the workplace, however in special situations where this is impractical a flat plate coated in parallel with the coating operations may be used. The minimum acceptance


value shall be 650 psi[HOLD]. Testing shall be essentially non-destructive i.e. the tensile load shall be increased to the acceptance value, plus 10%, to allow for reading inaccuracies, and, providing that no failure has occurred in the coating or adhesive, the result shall be acceptable.

7.6 Holiday test All coatings applied to the internal of pressure vessels, the submerged zone and the

splash zone of the jacket shall be subjected to 100% holiday testing, in order to ensure that the coating is pinhole free.

8. REPAIRS

8.1 General Unless otherwise advised by the coating systems listed under Addendum A, damage

to paintwork incurred at any stage of transit or installation, including site welding operations, shall be re-prepared by blast cleaning to the original standard, or other cleaning as specified by the Purchaser, and re-coating the affected area as for the Specification, with the exception that in the case of zinc rich primed areas where primer is damaged, repair will be as stated under 8.5 of this Section. The above requirement is equally applicable to damage sustained by Thermally Sprayed Aluminium coated surfaces.

Preparation shall extend a minimum of 25mm into the sound paintwork, a further

25mm of sound paintwork shall be chamfered by light blasting or abrading. Re-painting shall then cover the area, extending 50mm on to the adjoining prepared paint surface.

Prior to the application of any coating all damage to previous coats will have been

repaired.

8.2 Inadequate Coating Thickness Areas with inadequate coating thickness will be thoroughly cleaned and if necessary

abraded and additional compatible coats applied until they meet specifications. These additional coats are to blend in with the final coating or adjoining areas.

8.3 Contaminated Surfaces Surfaces to be overcoated which become contaminated will be cleaned as outlined

under Solvent Cleaning (Section 4.3.4). The whole of the surface to be painted is to be cleaned with fresh water.

8.4 Coating Damage Not Exposing Steel Substrate The damaged area will be solvent cleaned (Ref. Section 4.3.4) to remove all

contamination and be allowed to dry. The coating around the damaged area will be chamfered to ensure continuity of the patch coating. The full coating system removed will then be re-applied in accordance with this specification.


8.5 Coating Damage Exposing Steel Substrate The damaged area will be re-cleaned as originally specified for that surface and

primer applied as follows. In the case of zinc rich primed areas, the repair primer will be a zinc rich epoxy, applied in accordance with this specification and the paint manufacturer's recommendations, in other cases the specification primer will be re-applied in accordance with this specification and the paint manufacturer's recommendations.

The re-cleaning is to carry over to secure surrounding coating and the edges

chamfered. The remaining coats will be applied to complete the paint system.

8.6 Repair Of Galvanised Surfaces Local damage to galvanising will be repaired by cleaning the area of all weld

spatter, flux and contamination, and thereafter wire brushing area thoroughly to clean bare steel.

The cleaned area is to be made good with zinc rich coating as detailed under

System 9.

8.7 Repair Of Thermally Sprayed Aluminium (TSA) Surfaces Repair of TSA shall be carried out in accordance with the appropriate system

specification.

9. LIST OF APPROVED PAINT MANUFACTURERS [HOLD] All paints shall be obtained from one of the following Paint Manufacturers. Other

paint suppliers may be approved by Purchaser subject to product review.

• Ameron Protective Coatings • Crown Paints Ltd. • Hempel Marine Paints Ltd. • International Paints • Jotun - Henry Clark Ltd. • W & H Leigh & Co. • Mebon Paints • Sigma Coatings Ltd. • Tretol (Carboline) • Kemira Coatings Ltd.


ADDENDUM A COATING SYSTEMS CONTENTS: SYSTEM 1 COATING SYSTEM FOR INTERNAL SURFACES OF DIESEL STORAGE TANKS - EPOXY

SYSTEM. SYSTEM 2 JACKET ATMOSPHERIC ZONE, TOPSIDES STRUCTURAL STEELWORK AND FACILITIES

OPERATING AT TEMPERATURES UP TO 120°C - UNDER THERMAL INSULATION - TSA COATING.

SYSTEM 3(A) CARBON STEEL TOPSIDE FACILITIES OPERATING AT TEMPERATURES UP TO 120°C - NOT THERMALLY INSULATED - EPOXY COATING.

SYSTEM 3(B) CARBON STEEL - UNDERSIDE OF CELLAR DECK - EPOXY COATING. SYSTEM 4 ALUMINIUM HELIDECK - EPOXY COATING SYSTEM 5 CARBON AND STAINLESS STEEL TOPSIDE FACILITIES OPERATING AT TEMPERATURES

BETWEEN 121°C AND 350°C - TSA COATING SYSTEM 6 CARBON STEEL TOPSIDE FACILITIES OPERATING AT TEMPERATURES BETWEEN 351°C

AND 550°C - TSA COATING SYSTEM 7 AUSTENITIC STAINLESS STEEL TOPSIDE FACILITIES OPERATING AT TEMPERATURES

BETWEEN 51°C AND 120°C - NOT THERMALLY INSULATED - EPOXY COATING SYSTEM 8 GLASS FLAKE INTERNAL LINING OF STEEL TANKS AND VESSELS - GLASS FLAKE EPOXY

COATING SYSTEM 9 GALVANISED STEEL SURFACES, EXCLUDING GRATINGS - EPOXY COATING SYSTEM 10 GALVANISED STEEL GRATINGS - BITUMINOUS COATING SYSTEM 11 HEAVY DUTY NON-SLIP STEEL DECK SURFACES - EPOXY COATING SYSTEM 12 LIGHT DUTY NON-SLIP STEEL DECK SURFACES - EPOXY COATING SYSTEM 13 JACKET, CAISSONS AND J-TUBES EXTERNAL SPLASH ZONE COATING SYSTEM - GLASS

FLAKE EPOXY SYSTEM SYSTEM14 SUBMERGED ZONE OF THE JACKET STRUCTURE - EPOXY SYSTEM


System 1 Coating System For Internal Surfaces Of Diesel Storage Tanks - Epoxy System.

Scope Internal surfaces of diesel including all structural steelwork, stiffeners, piping, etc. Exclusions Internal surfaces of tanks where anything other than diesel is held. Surface Preparation Blast clean to SIS 05 59 00 Sa2½ (white metal) to provide a surface profile of 50 to

75 microns, at the time of coating. Approved Systems

PAINT SYSTEM

PRIMER 40 microns

1st COAT 125 microns

2nd COAT (White) 125 microns

Total Dry Film Thickness = 290 microns Notes On System 1

1. Prior to shot blasting and application of lining, the internal tank surfaces shall be suitably prepared to remove all burrs, weld spatter and sharp corners. All corners shall have a minimum radius of 3mm.

2. If necessary to use a blast hold primer in order to avoid contamination of prepared surfaces, the blast hold primer used shall be in accordance with the paint supplier's recommendation.

3. Aluminium anodes are required in all diesel storage tanks in order to provide cathodic protection.


System 2 Jacket atmospheric zone, Topsides Structural Steelwork And Facilities Operating At Temperatures Up To 120°C - Under Thermal Insulation - TSA Coating.

Scope Application of Thermally Sprayed Aluminium (TSA) in accordance with BS 2569

(Part 1) to carbon steel equipment, piping and oil/gas riser tie-ins supplied with the topsides including steelwork in the atmospheric zones, as well as the atmospheric zone of the jacket, i.e. from the top of the splash zone and upwards.

Application of TSA coatings to carbon and stainless steel piping, vessels

exchangers, instruments and valves, under thermal insulation and operating at temperatures up to 120°C.

Exclusions Oil and Gas risers. Surfaces beneath passive fire protection. Duplex and super

duplex stainless steel operating below 80°C. Surface Preparation Surface preparation of substrates to be TSA coated shall essentially be in

accordance with section 4.3 of this specification, with the following additional requirements:

i. All surfaces to be coated shall be degreased before grit blasting using an

approved procedure (i.e. steam cleaning or solvent washing). The degree of surface cleanliness shall be confirmed by a UV fluorescence test or an alternative Company approved technique.

ii. The surface shall be dry blast cleaned to SIS 055900 Grade Sa 3 (white

metal). The blasting operation shall achieve a surface profile of 75 - 100 microns. The blasting abrasive shall be either aluminium oxide or recyclable chilled iron/steel grit with a hardness exceeding 750 BHN.

iii. All dust, grit and foreign matter shall be removed from the blast cleaned

surface before coating application. System

a. TSA application shall be conducted essentially in accordance with BS 2569 (Part 1).

b. TSA coating application shall commence preferably within 4 hours of

completion of blasting - after the surface has been inspected and passed and before the onset of any visible surface deterioration. In the event that deterioration of the blasted surface does occur before commencement of TSA application, then the surface shall be re-blasted to recover the Sa 3 finish.


c. Intended weld areas shall be masked off for a distance of 100mm from the component end after blasting, inspection and before metal spraying.

d. As far as practicable, all aluminium metal spraying shall be conducted under

enclosed and environmentally controlled conditions. For major site work this requirement may be relaxed, subject to prior approval of procedures by the Purchaser.

e. All surfaces to be aluminium metal sprayed shall be free from moisture

throughout the coating operation and shall have a surface temperature of at least 5°C above dew point.

f. For optimum coating adhesion the Supplier is advised to maintain the

substrate temperature above 20°C. For coating applied below 10°C the Supplier must perform a test to demonstrate sufficient adhesion (see also note 2).

g. The method of TSA application shall be by either the flame or arc spraying

processes (see note 1). Wire fed spraying equipment shall be used. h. Items shall be sprayed with high purity metallic aluminium (minimum

99.5% Al). Aluminium wire conforming to BS 1475 Grade 1050A shall be used.

i. The aluminium coating shall be applied to a minimum average thickness of

200 microns, with a tolerance over the workpiece of +100 microns, -25 microns.

j. The specified coating thickness shall be applied in multiple passes of the

spray nozzle to achieve a coating of uniform thickness and homogeneity. Under no circumstances shall less than two (2) passes of TSA be applied to any surface. Each pass shall overlap the previous pass such that an even coating of uniform thickness is produced.

k. The final surface of the unsealed coating shall be smooth and free from

lumps, coarse areas and loosely adherent particles. l. Not more than 5% of the surface of any TSA coated component shall be less

than 175 microns in thickness (before sealant application). m. A sealer (see Note 3) shall be applied after the TSA coating has been

inspected and approved. The sealer coat is applied to further enhance the anti corrosion characteristics of TSA, and if pigmented, can also serve as a “cosmetic” coating. The sealer should be applied immediately after completion of the metal spraying and inspection, and definitely within 12 hours of completion of TSA coating. Application should be in multiple


passes to obtain a guaranteed minimum dry film thickness of 25 to 50 microns, excluding any absorption into the metal spray.

Notes To System 2

1. The Supplier shall submit to the Purchaser a proposal for the application of TSA to cleaned and grit blasted component surfaces. As a minimum requirement, the proposal shall contain details of :

• The TSA application method offered • Environmental control measures • Equipment type • Automation method (if offered) • Metal spray deposition rate • Applied thickness per pass and total coating thickness • Time between :

a) Each TSA pass b) Completion of TSA application and sealing

• Mechanical characteristics of the deposited coating • Deposited coating QA/QC, test panel production and scope and

frequency of panel evaluation • Repair procedure

As a minimum requirement TSA application and acceptance criteria shall be

in compliance with BS 2569. 2. Where the Supplier has had prior involvement in TSA application for

offshore projects, these shall be cited and any lessons learned which could impact on TSA coating performance or this specification shall be put forward to the Purchaser for consideration.

3. The sealer coat shall be formulated to penetrate and absorb into the porous

TSA coating surface layers and shall be of proven performance in offshore marine environments. The sealer shall be applied in at least two coating operations and result in the production of a tenacious film of 25 to 50 microns (minimum) thickness when dry. A section taken through a test panel shall demonstrate the ability of the coating to penetrate the TSA coating.

4 Whilst the need for a cosmetic finish with high sheen and good gloss

retention is not a requirement of this paint system a uniform quality of surface finish and colour shall be obtained on all exposed surfaces.

5 After completion of welding any bare (masked off) surfaces of previously

aluminium metal coated components shall be cleaned, grit blasted and TSA coated in accordance with this specification and coating system. A distance of minimum 100mm of the previously sealed TSA shall be sweep blasted to


expose the aluminium coating prior to TSA being applied to the weld joint area and the sweep blasted area. On completion of TSA application and achievement of the required aluminium coating thickness, the newly metal sprayed surface shall be sealed, per note 3. The sealer coat shall overlap onto the previously sealed surface by a minimum of 25mm. In special cases where grit blasting is prohibited the company may approve other coatings as specified in Note 6.

6 Coating damage severity falls into four categories:

A) Damage resulting in exposure of the steel substrate. B) Damage arising from welding Operations i.e. charring. C) Damage to the aluminium coating NOT resulting in exposure of the

steel substrate. D) Damage to sealer coating.

The method adopted to repair Category À' and `B' damaged shall generally

be to reinstate the coating in accordance with this specification and this system. However in special cases where grit blasting is prohibited the company may give dispensation for the surfaces to be power wire brushed, needle gunned to produce an anchor pattern and then coated with a suitable pigmented `High Build' polyurethane coating such as Àcothane' or a high build glass flake epoxy to a minimum DFT of 1mm.

It shall be noted that whilst the use of high build coating system may be

permitted in lieu of TSA as a repair method for Category À' and `B' damaged areas it is stressed that this is a concession which may be given by the company on a cases by case justification in order to assist in site fabrication, and that the resultant performance and useful lifetime of the high build coating system is unlikely to match that obtainable from a fully reinstated TSA coating system.

In BOTH the above cases the area of repair shall be recoated with TSA

sealant to obtain a uniform surface colour finish. Category `C' damaged areas shall have the remaining TSA thickness

checked. If below 175 microns then the affected area shall be repaired in accordance with the guidelines proposed for the repair of category À' and `B' damage.

Category `D' damage, i.e. damage to the sealer coat ONLY as may arise

during coated component handling or as a consequence of heat damage from welding operations, should be repaired by light wire brushing of the TSA surface to remove any loose or charred sealant, followed by re-application of the sealer coat (and top coat, as required).


System 3(a) Carbon Steel Topside Facilities Operating At Temperatures Up To 120°C - Not Thermally Insulated - Epoxy Coating.

Scope All carbon steel tanks, vessels, heat exchangers, instruments, valves and piping

SP's, Structural Steel not specified as being coated in accordance with System 2 and all equipment not thermally insulated operating at temperatures up to 120°C not covered by System 2.

For painting beneath passive fire protection the coating system shall be agreed with

the PFP supplier. If acceptable the primer and the tie coat only as listed in the table below may be used.

Topcoats for PFP shall be in accordance with the PFP manufactures

recommendations, if acceptable the topcoat systems listed below may be used. Exclusions Top surfaces of decks, internal surfaces of tanks and vessels and surfaces operating

at temperatures in excess of 120°C. Carbon steel vessels and heat exchangers with solid stainless steel, titanium or nickel-based alloy nozzles, and structural steelwork.

Surface Preparation Blast clean to SIS 05 59 00, Sa2½ (near white metal). Paint before any visible

deterioration occurs and within a maximum of 4 hours. Approved Systems

PAINT SYSTEM PRIMER Epoxy Zone Phosphate

50 microns

MID COAT Glass Flake Epoxy

300 microns

TOP COAT Polyurethane

50 microns

Total minimum Dry Film Thickness = 400 microns


System 3(b) Carbon Steel - Underside of Cellar Deck - Epoxy Coating. Surface Preparation Blast clean to SIS 0559 00 Sa 2½. Paint before any visible deterioration occurs and

within a maximum of 4 hours.

PAINT SYSTEM PRIMER Epoxy Zinc 50 microns

TOP COAT Glass Flake Epoxy

500 microns

Total Minimum Dry Film Thickness = 550 microns Notes To System 3

1. Primer/tie coat and top coat shall be infinitely overcoatable. 2. The tie-coat for System 3(a) may be deleted with the prior approval of the

Purchaser if the first coat can be applied within seven days. Any zinc salts which have formed within this period shall be removed in accordance with the paint manufacturer's recommendation.

3. For electrical switchgear, control panels and other equipment which will be installed in controlled environment conditions, the equipment supplier's standard offshore paint may be acceptable. In all cases the equipment supplier shall supply full details of the paint specification in writing for the Purchaser's approval.

4. For electrical switchgear, control panels and other equipment which will be installed outside controlled environments, equipment supplier's alternative paint specifications will be considered for acceptance by the Purchaser providing it meets the following stringent requirements: a) any alternative paint specification offered by the equipment

suppliers shall be submitted in writing for the Purchaser's approval before use;

b) surface preparation, dry film thickness and paint quality must be comparable with this specification;

c) equipment supplier's specification must be shown to have proven track record performance.

5. Any repairs necessary to the damaged paint system shall be prepared for: i) small defects (less than 50mm diameter) by disking to St3 and patch

prime with epoxy primer (30 micron minimum) and coatings as per original specification.

ii) large defects (greater than 50mm diameter), blast clean (Sa2½) and patch prime with epoxy primer (30 micron minimum) and coatings as per original specification.

6. Alternative equivalent paint systems will be considered by the Purchaser if improved performance can be demonstrated. Such demonstrations shall


include documented service histories and long term test data such as required by NORSOK M-CR-501.


System 4 Aluminium Helideck - Epoxy Coating Scope Upper surface of aluminium helideck requiring non-slip deck finish and all aviation

marking requirements. Surface Preparation Thoroughly degrease using a proprietary aqueous emulsified degreasing agent and

rinse with clean water. Blast clean using non-metallic abrasive (Stonegrit or similar) to achieve an

appearance similar to Sa2½ with a surface profile 75-100 microns as measured by surface replica technique (Testex).

Approved System

PAINT SYSTEM

PRIMER 2-pack Epoxy

50 microns

TOP COAT 3-pack Epoxy Non-slip finish

Total Minimum Dry Film Thickness = 400 to 600 microns Notes To System 4

1. Markings to be applied over non-slip paint to meet aviation requirements by applying one coat two pack epoxy finish to 50 microns dry film thickness in appropriate colour.

2. Equivalent non-slip system to the above may be submitted from other paint Manufacturer's. Approval must be obtained in writing prior to use. Such systems could include those where the Top Coat is applied as 2 coats with the aggregate broadcast over the surface between coats. The size and type of aggregate must be approved prior to use. Alternative systems shall be scheduled from the following Manufacturer's: • Crown • Hempel • International • Jotun • Sigma

3. The paint manufactures advise regarding recommended application practice shall be sought prior to application.

4. For repair to damaged areas spot blast to original profile and paint as per original specification.

5. Manufacturers shall provide documentary evidence of previous compliance with CAP 437 for friction factors. Preference will be given to those manufacturers with the longest demonstrable friction check interval.


System 5 Carbon and Stainless Steel Topside Facilities Operating At Temperatures Between 121°C And 350°C - TSA Coating

Scope All carbon and stainless steel piping, vessels, heat exchangers, equipment and

instruments operating at temperatures between 121°C and 350°C, including surfaces beneath thermal insulation.

Exclusions Exhaust ducting subject to shock heating. Surface Preparation In accordance with System 2. System In accordance with System 2 except that the sealer coat shall be as follows: Approved Systems

PAINT SYSTEM

SEAL COAT Aluminium Silicone

20 -50 microns

Total Minimum Dry Film Thickness = 200 microns


System 6 Carbon Steel Topside Facilities Operating At Temperatures Between 351°C And 550°C - TSA Coating

Scope Steelwork subject to continuous or intermittent temperatures between 351°C and

550°C. Exhaust systems subject to shock heating and flare booms including all associated piping.

Exclusions Stainless steels, nickel-based alloys and copper-based alloys. Surface Preparation In accordance with System 2. System In accordance with System 2 except for the sealer coats which shall be as specified

below. Approved Systems

PAINT SYSTEM

SEALER High Temperature Silicone

20 microns

Total Minimum Dry Film Thickness = 200 microns (Including Aluminium

Metal Spray) Notes To System 6

1. The silicone sealer shall be capable of meeting the maximum temperature. 2. Repairs to damaged areas must be reinstated as to the requirements of the

original specification unless otherwise approved by the Purchaser.


System 7 Austenitic Stainless Steel Topside Facilities Operating At Temperatures Between 51°C And 120°C - Not Thermally Insulated - Epoxy Coating

Includes: Mixed Metal Combinations of Carbon Steel, Stainless Steel and Nickel Alloys at

all Temperatures up to 120°C Scope Austenitic stainless steel piping, vessels, heat exchangers and including carbon steel

vessels and heat exchangers with solid stainless steel or nickel-based alloy nozzles, not thermally insulated, operating at temperatures between 51°C and 120°C.

Mixed metal combinations including carbon steel with other metals on instrument

pipework and other equipment; carbon steel actuators used on stainless steel or nickel-based alloy or copper based alloy valves operating at temperatures up to 120°C, not thermally insulated.

Exclusions Items of carbon steel, scheduled for painting to be included in mixed metal

combinations which can be prepared and painted in isolation. These items shall be painted in accordance with System 3 for that surface.

Surface Preparation Blast clean to SIS 05 59 00, Sa2½ (white metal) using a metallic free abrasive (free

from chlorides) such as alumina oxide to provide a surface profile of 30 to 60 microns. Paint before any visible deterioration occurs and within a maximum of 4 hours.

Approved System

PAINT SYSTEM

PRIMER 35 microns

1st MID-COAT 125 microns

2nd MID-COAT 100 microns

TOP COAT 40 microns

Total Minimum Dry Film Thickness = 300 microns Notes On System 7

1. All carbon steel appurtenances and nozzles shall be fully painted in accordance with this specification.

2. All abrasives used shall be iron-free and free of chlorides, metallic zinc and metallic aluminium. Copper slag shall not be used. The abrasive used shall be selected to give the specified profile.

3. All paints used shall be essentially chloride-free and not in any form contain low melting point metals. The dried film must not contain more than 200 ppm chlorides or 250 ppm of any low melting point metals.

4. For repair to damaged areas disk to ST3 and paint as per original specification.


System 8 Glass Flake Internal Lining Of Steel Tanks And Vessels - Glass Flake Epoxy Coating

Scope Carbon Steel tanks and vessels associated with handling Potable water,

seawater/crude oil mixtures and other hazardous production-related hydrocarbon waste products at temperatures up to 95°C (slightly higher temperature may be tolerated for short periods).

The application of glass flake vinyl ester resin coatings to vessels. The glass flake

coating shall be applied to the entire internal surface of the subject equipment, where overlaid nozzles have been installed the coating shall be blended into the overlay. The overlay, as such, does NOT require coating with glass flake. The coating shall extend over the faces of all non weld overlaid flanges, including blind flanges and manway covers. Carbon steel flanges shall be rebated to facilitate lining and allow a metal to metal seal.

Exclusions Diesel Storage Tanks. Solid stainless steel or weld overlaid nozzles shall not be

coated, but shall have the coating blended/feathered onto their surface for continuity.

Surface Preparation Before blast cleaning the surface of the item to be coated shall have all sharp

surfaces, including welds, ground smooth and radiused to no less than 2mm. All weld spatter shall be removed. Ground components shall be free from porosity, undercuts, cracks and cavities. The use of fillers such as resin putties and low melting point solders for filling holes, cracks and other surface breaking defects is not permitted under any circumstances.

Oil, grease, general dirt and any other contaminants shall be removed with a water

emulsifiable degreasing solvent, followed by a thorough fresh water wash. Items NOT requiring blast cleaning i.e. flange faces and weld overlaid nozzles shall have suitable protection applied i.e. masking.

The internal surface shall be blast cleaned to SIS 05 5900 Sa 2½ to give a surface

profile if 75-100 microns, minimum, and a maximum peak amplitude of no more than 150 microns.

All dust and debris shall be removed from the blasted surface by vacuum cleaning

only. Once cleaning to Sa 2½ no contact whatsoever shall be made with the prepared surface until primer application.

Procedure Qualification Prior to the start of coating, the coating operation shall be pre-qualified as follows : A detailed procedure, including details of surface preparation, coating application,

inspection and coating repair methods shall be submitted for approval by the Purchaser.


As part of this qualification the Supplier shall submit a steel panel (300mm x 150mm) illustrating the coating sequence in stepped format. This panel shall subsequently become the reference standard to be achieved on all internal coating carried out by the supplier.

Coating Application The primer shall be applied within 4 hours of blast cleaning or before rash rusting

of the surface occurs. `Stripe' coats shall be brush applied to all difficult access areas such as edges, welds

and corners during the application of each coat to ensure compliance with the specified film thickness.

Primer and all subsequent build and top coats shall only be applied to surfaces that

are clean and dry, and when the ambient temperature is above 10°C. Relative humidity shall not exceed 80%, and the metal temperature shall be at least 5°C above the dew point throughout the entire operation (unless otherwise recommended by the coating manufacturer).

Each coating shall have a different colour to ensure proper coverage and full

overcoating. Thickness checks on each coat of the lining shall be made on a continuous basis throughout the lining application to ensure that the required lining thickness is met.

Application shall be by trowel. It is important to ensure that the flakes of glass are

orientated parallel to the substrate and that they are completely covered with resin to prevent wicking.

All coatings shall be applied in a minimum of two applications to give an overall

dry film thickness of fully cured material of 1.0mm (-0/+0.5mm), unless otherwise directed. Excessive film thickness shall be avoided and no coating shall be force dried.

The coating manufacturers recommendations for coating application and stipulated

drying times shall be carefully observed and recorded. Repairs Any damage or defects shall be repaired using agreed procedures. The procedure

shall verify fully effective adhesion of coating repair material with the originally applied lining.

Major coating defects shall necessitate partial or total rework after the cause of the

problem has been established. Areas below the required thickness shall be overcoated to bring the lining up to the

recommended minimum value. Any pinholes shall be ground out and fresh lining material applied overlapping the

sound material by a minimum of 25mm.


All repair area shall be subjected to spark testing in accordance with the procedures

described in the notes below. Notes No tank, vessel or associated equipment shall be internally coated until all hydro-

testing or other pressure testing has been completed. All internal/external hot work (i.e. welding) shall be completed prior to

commencement of coating application. This coating system shall only be applied by application approved by the Purchaser

and the coating manufacturer. Products from different glass flake coating suppliers shall not be mixed. The

applied system shall be of single coating manufacturer origin. The complete system shall be 100% spark tested after curing has taken place using

a DC Holiday Detector Elcometer model 105 or similar. The test voltage shall be 1kV per 250 microns of lining thickness (4kV/mm). Spark testing of the coating shall be witnessed by the Company or its nominated representative.

The coating shall be visually inspected for any irregularities such as raised area, soft

spots, disbondment, poor jointing, surface discontinuity and delamination. Any defects shall be marked for subsequent repair.

Personnel requiring access into the vessel following coating application shall wear

soft protective footwear. Care is particularly necessary when installing vessel internals and tools may accidentally damage the lining if dropped.

All products for use with potable water must have Water Bylaw Advisory Service

Certification for potable water. Approved Systems

PAINT SUPPLIER GLASS FLAKE VINYL ESTER Corrocoat Polyglass V.E.F. Rigidon System 503

Minimum Total Dry Film Thickness = 1.0mm.

Alternative Glass Flake Vinyl Ester lining system may be submitted to the

Purchaser for approval. Note : System to have glass strand length of approximately 3mm.


Primer DFT should be ca 25-50 microns. Individual glass flake coatings should be applied to 300/500 microns DFT each - differential colours to verify full over coating of previous layer.


System 9 Galvanised Steel Surfaces, Excluding Gratings - Epoxy Coating Scope

i. Overcoating of intact galvanised surfaces when expressly identified and specified by the Purchaser.

ii. The repair of steel surfaces galvanised to BS 729 or ASTM A123 operating

at temperatures up to 120°C, including galvanised carbon steel flanges on firewater lines and external surfaces of galvanised HVAC ducting that is outside controlled environmental locations.

Exclusions Galvanised steel gratings, galvanised steel surfaces with temperatures above 120°C

and galvanised surfaces located within controlled environmental locations. Surface Preparation Surface preparation shall be selected from the following two options to meet Paint

Suppliers requirements:

i. Thoroughly degrease. Chemically etch the cleaned zinc surface with an approved mordant solution (T-wash). Rinse with clean water and thoroughly dry.

ii. Thoroughly degrease. Remove all corrosion products and lightly etch the

surface overall by sweep blasting. Approved Systems

PAINT SYSTEM

PRIMER 2-Pack Zinc Phosp. Epoxy -

25 microns

2 MID-COATS 2-Pack Epoxy

125 microns each

TOP COAT 2-Pack Modified PU

40 microns

Total Minimum Dry Film Thickness = 315 microns over Galvanising Notes To System 9

1. The importance of thorough degreasing cannot be overstressed. (See Clause 4.3.4.1).

2. When using T-wash, the etched surface should uniformly darken to confirm etching has taken place.

3. The modified polyurethane topcoat shall be infinitely overcoatable. 4. Surfaces of carbon-steel exposed by cutting or drilling galvanised steel

components shall be immediately cleaned and twice primed with a zinc rich epoxy primer before any rusting develops.

5. For repair to damaged areas scrape to a firm tight edge and paint as per original specification.


System 10 Galvanised Steel Gratings - Bituminous Coating Scope All steel gratings galvanised to BS 729 or ASTM A123 (minimum coating weight

900 g/m²), only when expressly identified on the fabrication drawings and specified by the Purchaser.

Exclusions All other galvanised steel surfaces. Surface Preparation Thoroughly degrease. Approved Systems

PAINT SYSTEM

2 Coats Bituminous Paint

40 microns per coat

Total Minimum Dry Film Thickness = 80 microns over Galvanising Notes To System 10

1. The importance of thorough degreasing cannot be overstressed. 2. The paint shall be applied by dipping.


System 11 Heavy Duty Non-Slip Steel Deck Surfaces - Epoxy Coating Scope Carbon steel deck surfaces , such as designated lay-down areas and personnel

traffic areas requiring heavy duty non-slip finish. Exclusions Carbon steel deck surfaces requiring normal duty non-slip finish. Surface Preparation Blast clean to SIS 05 59 00, Sa2½ (near white metal). Surface profile shall meet

paint manufacturers requirements. Paint before any visible deterioration occurs and within a maximum of 4 hours.

Approved System

PAINT SYSTEM PRIMER (optional) 75 microns

TOP COAT Epoxy non-slip

3mm

Total Minimum Dry Film Thickness in one coat = 3mm Notes To System 11

1. The grade and type of non-slip aggregate shall be approved by the Purchaser prior to use.

2. All products must be non-incendive sparking and have certificate to prove this, i.e. Warrington Fire Research Certificate).

3. A holding or temporary protective primer shall be applied following blast cleaning (Sa2½), to facilitate yard handling where it is desirable to apply Heavy Duty coat in the final stages of construction. Prior to application of the paint detailed in System 11, the surface shall be thoroughly cleaned to remove all contaminates, oil, grease, dirt deposition and rust (to SIS 05 59 00, St3) and shall be brought to a dry sound condition before repriming and finished as System 11.

4. For repair to damaged areas dress back loose screed to a firm tight edge and wire brush exposed areas to St3 and restore screed as per original specification.


System 12 Light Duty Non-Slip Steel Deck Surfaces - Epoxy Coating Scope Carbon steel deck surfaces requiring light duty non-slip finish. Exclusions Carbon steel deck surfaces requiring heavy duty non-slip finish, i.e. areas covered

by System 11.. Surface Preparation Blast clean to SIS 05 59 00, Sa2½ (near white metal). Surface profile shall meet

paint manufacturers requirements. Paint before any visible deterioration occurs and within a maximum of 4 hours.

Approved System

PAINT SYSTEM

PRIMER (optional) 2-Pack Epoxy

75 microns

TOP COAT * Epoxy non-slip

400 microns

Total Minimum Dry Film Thickness = 475 microns * The top coat shall be applied with the aggregate added to the

paint before application. Notes To System 12

1. This specification is to be used for areas adjacent to System 11, which will not be subjected to heavy foot traffic or for specific areas (Control Room, etc.) where only light foot traffic is envisaged.

2. All products must be non-incendive sparking and have certificate to prove this, i.e. Warrington Fire Research Certificate).

3. A holding or temporary primer shall be applied following blast cleaning (Sa2½), to facilitate yard handling where it is desirable to apply the "Light Duty" system in the final stages of construction. Prior to application of the paint detailed in System 12, the surface shall be thoroughly cleaned to remove all contaminates, oil, grease, dirt deposition and rust (to SIS 05 59 00, St3) and shall be brought to a dry sound condition before repriming and finished as System 12.


System 13 Jacket, Caissons and J-tubes External Splash Zone Coating System - Glass Flake Epoxy System

Scope This coating system shall be applied all carbon steel jacket legs and bracing,

caissons and j-tubes in the splash zone. Exclusions Risers shall not be coated with this system. Surface Preparation Blast clean to SIS 055900 Sa 2½ (near white metal). Painting must take place

before any visible deterioration occurs or within a maximum of 4 hours after blasting.

Approved Systems

PAINT SUPPLIER GLASS FLAKE EPOXY Ameron Amerlock 400 GF International Interzone 1000

Total minimum Dry Film Thickness = 1500 microns

Other manufactures Glass Flake Epoxy coatings may be acceptable provided they

are of the same generic type as those given above and have a proven record for offshore use in the splash zone of fixed structures.

Notes To System 13

1. The coating type used must be a Glass Flake filled two pack epoxy with a high solids volume ( > 80%).

2. The splash zone coating system shall overlap on to both the atmospheric and the submerged zone coating systems by a minimum of 150mm.

3. The splash zone shall be subjected to 100% holiday detection following the application of the coating system.

4. Three coats shall be applied unless the manufacture can demonstrate successfully with the Purchaser’s approval that a two coat application will result in the required DFT being achieved on a repeatable basis in the coated area.


System14 Submerged Zone of the Jacket Structure - Epoxy System Scope All steel in the submerged zone exposed to seawater, e.g. legs and braces, caissons,

j-tubes, appurtenances guides and supports the splash zone. Exclusions Internal surfaces of guides and supports unless shown otherwise on the drawings.

Risers and conductors which will be covered by separate specifications. The internal surface of pile sleeves and the external and internal of piles, except as shown on the drawings

Surface Preparation Blast clean to SIS 055900 Sa 2½ (near white metal). Painting must take place

before any visible deterioration occurs or within a maximum of 4 hours after blasting.

Approved Systems

PAINT MANUFACTURE 2 PACK POLYAMIDE CURED EPOXY Ameron Amercoat 358 International Interzone 954

Total Minimum Dry Film Thickness = 350 microns

Other manufactures products may be acceptable provided they are of the same

generic type as those given above and have a proven record for offshore use in the submerged zone of fixed structures. This shall either comprise extensive documented case histories in a similar environment or testing in accordance with NORSOK M-CR-501 or equivalent. The use of “winter cure” derivatives of all such systems shall be subject to individual approval and/or further testing.

Notes On System 14

1. The Epoxy must be a polyamide cured two pack high solids epoxy. 2. All damage shall be repaired using the above systems or company approved

equivalents. 3. Three coats shall be applied unless the manufacture demonstrates

successfully that a two coat application will result in a full cover of the coated area, in this case the applicator may ask for the Purchaser’s approval to reduce the number of applied coats to two.


ADDENDUM B COLOUR SCHEDULE [HOLD]

B.1 Finish Colour Schedule

B.1.1 Structure and Equipment All equipment listed shall be uniformly coloured in accordance with the tables

below:

ITEM COLOUR BS 4800 NUMBER

1. Topsides primary and secondary structural steel up to and including underside of cellar deck.

2. General skids, small miscellaneous brackets, pipe

cradles, straps and all such like connections 3. Bulkheads, external walls and partitions, fire proofed

steel work 4 Secondary decks, not normally subject to heavy

traffic. 5. Walkway and traffic surfaces. 6. Helideck top surface.

Yellow Grey Yellow Green Dark Grey Dark Grey

08 E 51

18-B-17

14-E-53

00 A 09

00 A 09

7. Helideck markings In accordance with DEn "Offshore Installations Guidance on Design and Construction"

8. External doors Dark Grey 00 A 09 9. Uninsulated tanks, process vessels, pressure vessels

and heat exchangers. 10. Compressors.

Light Grey Aluminium HT

18-B-17

Silver

11. Pumps, crude oil 12. Pumps, water injection 13. Pumps, produced water

Dark Brown Emerald Green Green

14. Firewater piping including flanges and attached appliances.

Firefighting equipment, including diesel engines 15. First aid stations, safety shelters and showers 16. Valve Handles

Red Red Green/white diagonal stripes Red

04 E 53

04 E 53

14 E 53/ 00 E 55

04 E 53

17. Temporary Steelwork Orange 06 E 51

B1.2 Piping Identification Colours Unpainted firewater lines to be identified by banding with a durable PVC material

(colour Red 04 E 53). Appliances and flanges attached to firewater lines are to be completely painted in Red 04 E 53.


Uninsulated piping : all carbon steel, including stainless steel operating above 50°C, shall be painted with continuous ground colour white (BS 4800, Shade 00 E 55) with service indicated by colour banding.

Uninsulated corrosion resistant piping, including stainless steel with operating

temperature of 50°C and below, shall have service indicated by colour banding alone.

Insulated piping shall have service indicated by colour banding alone over the

cladding. Colour banding may be by painting or by using a durable PVC material. Banding shall be applied at:

• Both sides of valves, bulkheads, deck and other penetrations, major changes of direction.

• No more than 1 metre from package and vessel termination points, pipe

junctions. • Positions such that two sets of banding are normally visible and no greater

than 7m apart. The primary colour (outside) band shall be placed directly adjacent to, and on each

side of, the secondary colour (inside) band. Width of bands shall be 150mm for 6" lines and above and 100mm wide for 4" lines and below. A flow direction arrow shall be located on the pipe adjacent to the primary colour band, for details see below

Colour banding shall be in accordance with the following table (numbers in

brackets refer to BS 4800 colours): Flow direction arrows shall comprise a black or white adhesive tape 150mm wide

supplied in rolls with transparent arrows at 150mm centres. When applied to the pipe the arrow(s) shall indicate the direction of the pipe contents flow. Service labels shall be incorporated in the flow direction arrows. Service text shall be in a contrasting colour.


SERVICE BAND COLOURS

Description Code Primary (Outside)

Secondary (Inside)

Instrument Air Plant Air Closed Drains Desanding Drains Fire Water Fire Foam Halon Gas Gas Condensate Compressed Gas Fuel Gas Inert Gas Crude Oil Diesel Oil Hydraulic Fluid Lube Oil

AI AC,AP DC,DH

DD,DE,DO FF,FW FM,FD

FG PT

GL,PV GF

GN,VC PL PF OH OL

Blue( 20.E.51) Blue (20.E.51) Black (00.E.53) Black (00.E.53) Red (04.E.53) Red (04 E 53) Red (04.E.53) Yellow (08.C.35) Yellow (08.C.35) Yellow (08.C.35) Yellow (08.C.35) Brown (06.C.39) Brown (06.C.39) Brown (06.C.39) Brown (06.C.39) )

White (00.E.55) Blue (20-E-51) Silver Grey (10-A-03) Black (00.E.53) Red (04.E.53) Blue (18.E.51) Yellow (08.C.35) Crimson (04-D-45) Yellow (08.C.35) White (00.E.55) Blue (18-E-53) Brown (06.C.39) White (00.E.55) Pink (04.C.33)

efw-wsp-83002-rv-d01

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