AMEC Coating Specification 01

Document No:

UOG-ENG-SPC-45-006

Revision No.:

01

PROTECTIVE COATING

01 Issue Rev

Issued for Comment Issue or Revision Description

J. Wells

6/07/04

C. Gillard

Origin By

Date

Chkd By

6/07/04 Date

AMEC

Appd By

Date

Appd By CLIENT

Date

Protective Coating

CONTENTS 1.0

INTRODUCTION ............................................................................................................................................ 4

2.0

ABBREVIATIONS .......................................................................................................................................... 4

3.0

REFERENCED DOCUMENTS ....................................................................................................................... 4

4.0

SCOPE............................................................................................................................................................ 5

5.0

HEALTH, SAFETY AND ENVIRONMENT..................................................................................................... 6

5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 6.0 6.1 6.2 6.3

REGULATIONS ............................................................................................................................................. 6 SAFETY PRECAUTIONS FOR PRESSURISED HOSES ........................................................................................ 6 GENERAL HAZARDS ..................................................................................................................................... 6 SCAFFOLDING, STAGING AND ACCESSIBILITY ................................................................................................ 7 COATING MANUFACTURER'S INFORMATION ................................................................................................... 7 FLAMMABLE ATMOSPHERES (AREA CLASSIFICATION) .................................................................................... 7 PRECAUTIONS IN CLEANING AND APPLICATION OF PAINTS ............................................................................. 7 PERSONNEL/ ITEMS TO BE PROVIDED BY THE CONTRACTOR ........................................................................... 7 PREPARATION FOR COATING ................................................................................................................... 8 SURFACE IRREGULARITIES ........................................................................................................................... 8 SURFACE CONTAMINANTS ............................................................................................................................ 8 BLAST CLEANING ......................................................................................................................................... 8

7.0

SELECTION OF COATING MATERIAL SUPPLIER ..................................................................................... 9

8.0

QUALITY ASSURANCE .............................................................................................................................. 10

8.1 8.2 8.3 9.0

INSPECTION/ QUALITY CONTROL ................................................................................................................ 10 REPRESENTATIVE PANELS ......................................................................................................................... 10 COATING MANUFACTURER'S SUPPORT ....................................................................................................... 10 INSPECTION ................................................................................................................................................ 11

9.1 9.2 9.3 9.4 9.5

GENERAL REQUIREMENTS ......................................................................................................................... 11 CONTRACTOR'S INSPECTION RECORDS....................................................................................................... 11 CONTRACTOR'S INSPECTION EQUIPMENT .................................................................................................... 11 ACCESS AND FACILITIES............................................................................................................................. 11 DOCUMENTATION OF THE WORK................................................................................................................. 11

10.0

SELECTION OF COATING SYSTEM ....................................................................................................... 12

SYSTEM 1 .......................................................................................................................................................... 13 Jacket and Structure to Top of Jacket (including cellar deck), Bottom of Risers, Caissons, Process Pipework to ESDV Termination ....................................................................................................................................... 13 SYSTEM 2 .......................................................................................................................................................... 14 Topsides Structure, Carbon Steel Equipment & Pipework.............................................................................. 14 SYSTEM 3 .......................................................................................................................................................... 15 Insulated – Topsides Carbon Steel Equipment & Pipework............................................................................ 15 SYSTEM 4 .......................................................................................................................................................... 16 Controlled Environment/ Internal Areas, Carbon Steel Structure, Equipment & Pipework (excluding insulated systems)........................................................................................................................................................... 16 SYSTEM 5 .......................................................................................................................................................... 17 Corrosion Resistant Alloy Equipment and Pipework, Insulated or operating above 50°C (Stainless Steel 316) and 60°C (Duplex Steels and Alloy 825) ......................................................................................................... 17 SYSTEM 6 .......................................................................................................................................................... 18 Stainless steel and Alloy 825 Operating above 150°C, Carbon Steel Operating above 120°C, and Flare .... 18 SYSTEM 7 .......................................................................................................................................................... 19 Carbon Steel, Stainless steel and Alloy 825 operating above 120°C (or design above 150°C) where Access is Poor .............................................................................................................................................................. 19 SYSTEM 8 .......................................................................................................................................................... 20 Galvanising and Coating over Galvanising...................................................................................................... 20 UOG-ENG-SPC-45-006

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Protective Coating SYSTEM 9 .......................................................................................................................................................... 21 Decks ............................................................................................................................................................... 21 SYSTEM 10 ........................................................................................................................................................ 22 Internal Surfaces of Carbon Steel Vessels (Hydrocarbon or Seawater) ......................................................... 22 SYSTEM 11 ........................................................................................................................................................ 23 Internal Surfaces of Carbon Steel Pipework – Corrosion Protection .............................................................. 23 SYSTEM 12 ........................................................................................................................................................ 25 Internal Surfaces of Pipework – Stainless Steel, Titanium & Nickel-Alloy Insulation Spools.......................... 25 SYSTEM 13 ........................................................................................................................................................ 27 Internal Surfaces of Potable Water Tanks....................................................................................................... 27 11.0

PICKLING AND PASSIVATION................................................................................................................ 28

11.1 BASE MATERIAL ........................................................................................................................................ 28 11.2 AFTER WELDING........................................................................................................................................ 28 11.2.1 Seawater (25%Cr super duplex, 6%Mo)........................................................................................ 28 11.2.2 Corrosive duty (including all process) (stainless steels, e.g. 316L, 22%Cr & 25%Cr duplex)....... 28 11.2.3 Clean duty (e.g. nitrogen, air) (stainless steel 316L) ..................................................................... 28 12.0

COLOUR SCHEDULE............................................................................................................................... 29

12.1 GENERAL .................................................................................................................................................. 29 12.2 PIPEWORK IDENTIFICATION......................................................................................................................... 29 12.3 PIPING SYSTEM COLOUR SCHEDULE .......................................................................................................... 29 12.4 EQUIPMENT AND STRUCTURE COLOUR SCHEDULE ...................................................................................... 31 FIGURE 1 FLANGE REBATE FOR GLASS FLAKE EPOXY LINED VESSELS AND PIPEWORK ............................................. 35

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1.0

INTRODUCTION This document gives requirements and recommendations for the surface preparation, coating and colour schedule to be applied to both new and maintenance work which will be exposed to atmospheric conditions (irrespective of whether it will be insulated). An AMEC Materials Engineer should be consulted if further information is required. This document identifies a range of coating systems that combine improved technology to give enhanced performance/ longer life, and in many cases reduced number of coats, therefore reducing the overall total coating times. Application of coatings is a task with inherent safety implications and requires adherence to certain prescriptive methods of working. This specification defines safe operating practice for such activities. It also specifies coating systems that will minimise impact on health and safety of operatives. Specifically isocyanate and lead chromate-based systems are excluded. Prior to carrying out a coating operation it is necessary for the coating sub-contractor to submit a full procedure for review and approval by an AMEC Materials Engineer.

2.0

3.0

ABBREVIATIONS DFT:

Dry Film Thickness

LTC:

Low Temperature Curing

HB:

High Build

MIO:

Micaceous Iron Oxide

TSA:

Thermal Spray Aluminium

REFERENCED DOCUMENTS SIS 05 5900:

Swedish standard – Surface preparation prior to painting

BS 4800:

Paint colours for building purposes

BS 7079 A3:

Preparation of steel substrates

BS 1710:

Specification for identification of pipelines and services

BS 5493:

Code of practice for protective coating of iron and steel structures against corrosion

BS 7079/ ISO 8501:

Preparation of steel substrates before application of paints and related products. Visual assessment of surface cleanliness. Preparation grades of welds, cut edges and other areas with surface imperfections.

NORSOK M-501:

Surface preparation and protective coating.

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SCOPE The contents of this specification define the essential requirements of surface preparation and coating for structural steel, decks, modules, process-equipment, piping and production facilities. Specifically excluded from this specification is the protection of subsea pipeline items. Coating requirements outwith the scope of this specification will be subject to prior approval by the AMEC Materials Engineer.

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5.0

HEALTH, SAFETY AND ENVIRONMENT

5.1

Regulations

Account shall be taken of all relevant technical, health, safety and environmental legislation. Plant and equipment shall be maintained in good condition and shall comply with applicable health, safety, and environmental (HSE) requirements: • • • • •

National or local law requirements; Statutory requirements; Site regulations; Explosive atmosphere special regulations; Company and Client procedures.

Compressors and any associated pressure vessels shall be protected against overpressure. Current test certificates shall be held on site for inspection. Blast cleaning and spray-painting equipment shall be continuously bonded from the nozzle to the surface being painted and backwards from the nozzle to the compressor, which shall be earthed. Compressors used shall meet any HSE requirements specified by AMEC. 5.2

Safety Precautions for Pressurised Hoses

Pressurised hoses shall be marked, tested and results logged to ensure safe operation. Test certificates shall be available on site giving the maximum safe working pressure. Hoses and other pressure items shall be checked at least once per week to confirm that any damage or loss of electrical conductivity will not be a safety hazard. The 'dead-man' handle shall only be manually held in position by the blaster. The Contractor shall keep a log of safety inspections. 5.3

General Hazards

All hazards shall be identified and all necessary safety equipment shall be provided to ensure personnel protection in accordance with the Personnel Protective Equipment Regulations, 1992. The Contractor shall carry out COSHH and environmental assessments prior to start of the work in accordance with Control of Substances Hazardous to Health Regulations, 2002. At the job planning stage an assessment of the potential for release of hazardous materials into the environment shall be made, including provisions for the safe disposal of used materials and waste. Special attention shall be given to personnel protection. The Contractor shall provide all the necessary items to ensure protection of his personnel whilst carrying out their duties. Appropriate protective clothing shall be worn at all times. Routine checks shall be made of the integrity of all personal protective equipment. Risk assessments will be conducted to determine adequate fire fighting equipment will be deployed in high-risk areas such as paint mixing areas and close to hydrocarbon or diesel driven plant and sufficient ventilation should be provided whilst blasting or spraying operations are in process. Independent breathing apparatus shall be worn such that the operator is unaffected by the environment. Face fit testing will be required, in accordance with the Personnel Protective Equipment Regulations, 1992. In particular areas where natural ventilation is insufficient, positive ventilation shall be applied. Solvent drums and containers shall be earthed. Work areas shall be cordoned off with appropriate warning signs and appropriate containment to avoid damage to adjacent items.

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5.4

Scaffolding, Staging and Accessibility

In the UK, fixed scaffolding, staging, trolleys, cradles, etc. shall be used in accordance with the Construction (Health, Safety and Welfare Regulations (1996) and where relevant, the Offshore Installations (Operational Safety, Health and Welfare) Regulations. In other countries safe working practice shall be in accordance with a national standard to be agreed. All boards are to be firmly fixed or tied down at all times. No loose boards or items of equipment are to be left overnight. Access shall be provided for painting and inspection of all surfaces in accordance with this Specification, and enabling free movement of operators taking account of the effect of wearing protective clothing on safety aspects. 5.5

Coating Manufacturer's Information

Manufacturer's data sheets and materials safety data sheets containing information on HSE factors shall be provided for all products used, prior to start of the work, and shall be available on site at the job location. The sheets shall give specific information on the chemical composition of the materials involved and precautions that must be taken. 5.6

Flammable Atmospheres (Area Classification)

The Client will advise area classifications for both plant design and construction/ maintenance periods. Some classification may preclude use of certain paint compositions. The classification for construction or maintenance periods will affect the minimum rating permissible for the Contractor's electrical equipment. The Contractor shall provide all necessary data for the proposed paint systems and solvents in order to permit area classifications to be determined for the duration of the painting works. 5.7

Precautions in Cleaning and Application of Paints

Specific precautions shall be taken to avoid the build-up of flammable atmospheres from cleaning solvents or paints in confined spaces. These shall include attention to weather protection, ventilation and type of lighting used. Work shall be carried out to company and client procedures and take account of all applicable HSE regulations and statutory requirements. 5.8

Personnel/ Items to be provided by the Contractor

The Contractor shall supply all necessary personnel, equipment, painting, inspection and recording instruments, including (unless specified otherwise) the following: • • • • • • • • • •

Evaluation of all hazards and provision of proposals to meet HSE requirements; Skilled, experienced and competent personnel/ supervision (taking account of work scheduling, transportation and accommodation requirements); Product data and materials safety data sheets, including valid COSHH assessment; Provision and maintenance of plant, equipment and tools including those listed below; Scaffolding, staging, cradles, etc.; The required lighting to meet the electrical classification for the work area; Ventilation, spray booths, weather protection, heating; Surface preparation equipment; grinders, blasting equipment, vacuum cleaners etc.; Paint and thinners; Paint mixing equipment, spraying equipment (including air compressors and generators) rollers, brushes solvents and clean rags.

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PREPARATION FOR COATING Prior to commencing any coating application surfaces shall be free of irregularities, millscale and rust and surface contaminants.

6.1

Surface Irregularities

Surface irregularities shall be removed/ made smooth prior to surface preparation. Irregularities include: • • •

Sharp or rough edges and burrs; Surface laminations and laps; Weld spatter, and slag.

Such irregularities, which appear after surface preparation by blast cleaning, shall be similarly treated. If grinding is necessary it shall be subject to AMEC approval and checking of remaining wall thickness. 6.2

Surface Contaminants

Steel that has been exposed to a salt laden atmosphere shall be tested for the presence of salts using the potassium ferricyanide test in accordance with BS 5493 Appendix G. Salts shall be removed by washing. Cleaning to remove oil and grease shall be carried out using proprietary emulsifying agents and then washing with clean water. The surface shall be allowed to dry before proceeding with further preparation and painting. 6.3

Blast Cleaning

Open dry grit blasting is required in general for new construction. Open dry grit blasting is not acceptable to Maintenance Operations as it produces large amounts of dust and grit, which contaminate a large area surrounding the location where grit blasting is being used. This can be controlled by use of the Vacublast system. Although, power tool cleaning may be more suitable in certain areas, it produces a poorly prepared surface, hence the coating applied over it can be expected to fail in 18 months to 3 years. The surface preparation method to be used for maintenance coating is precision wet abrasive blasting. The advantages of wet abrasive blasting are as follows: • • • • • •

Removes most surface contaminates including millscale and profiles the steel surface; Other trades can work safely in close proximity; Virtually dust free; Environmentally friendly; Intrinsically safe and can be used in Zone 1 and 2 locations; Extended coating life expectancy.

Disadvantages of wet abrasive blasting are as follows: • • • •

Grit and water are used, though low quantities of each; Grit has to be removed from site to avoid blocking open drains; Sheeting and light enclosures are necessary to prevent slight grit spread; Confined spaces and overhead working are difficult due to splash-back effect and poor operation visibility.

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SELECTION OF COATING MATERIAL SUPPLIER Materials for coatings shall be selected based on the following: • • • •

Prior long-term good experience; Compliance with Health and Safety criteria specific to the location and Platform; Qualification to NORSOK M-501; Compatibility with substrate.

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QUALITY ASSURANCE

8.1

Inspection/ Quality Control

The Contractor shall nominate the person or persons responsible for inspection/ quality control. Details of the qualifications of such persons shall be submitted for approval. Verification of the Vendor's quality system is normally part of the pre-qualification procedure, and is therefore not specified in the core text of this specification. 8.2

Representative Panels

The Contractor shall prepare and coat two 300mm square sample plates with each coating system required. This shall take place at least 7 days before starting the work and shall be witnessed by the Contractor's Inspector. Any additional material samples and test panels to be provided by the Contractor will be specified where necessary. 8.3

Coating Manufacturer's Support

The coating Manufacturer's technical representative shall support the coating Contractor by:• • • •

Being on site at the start of application (when required); Providing expertise in case of any problems with his material and its application; Making sufficient site visits during the contract to ensure that the coatings are being applied in accordance with the Manufacturer's recommendations; Providing a written report to AMEC following each site visit.

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9.0

INSPECTION Contractor is responsible for ensuring that the correct paint materials are obtained and applied, within the shelf life, such that work is performed to the standards of quality required by this Specification and meeting the appropriate HSE requirements.

9.1

General Requirements

Paintwork shall be subject to inspection on a continuous basis by the Contractor's nominated person who shall make a daily record and record the results of his inspections. 9.2

Contractor's Inspection Records

These shall include details of the following:• • • • • • • • • • • 9.3

Receipt and correct storage of coating materials including batch numbers and product reference numbers. Items being painted/ lined. Location of work. Ambient conditions recorded at least 4 times per day at the place of work. i.e. atmospheric temperature/ relative humidity/ dewpoint/ metal surface temperature and general weather conditions. Condition of abrasives and equipment. Surface preparation quality and profile, recorded by replica technique at least 4 times per day on prepared steel surfaces. Colour, wet and dry film thickness of paint coating on each item painted. Repairs or other further work necessary. Calibration of inspection instruments. Details of any problems together with details of their resolution and actions taken to prevent their recurrence. Signature of Contractor's personnel responsible for inspection approving individual items of work.

Contractor's Inspection Equipment

Contractor shall have available calibration certificates for all instruments. 9.4

Access and Facilities

Contractor shall provide access and facilities for Inspectors Inspection and testing equipment comprising of air and surface thermometers, hygrometers, surface profile gauges, wet and dry film thickness gauges, copies of the visual standard BS 7079-A1/ ISO 8501-1. 9.5

Documentation of the Work

Contractor shall ensure protection of the surroundings to painting works and shall ensure subsequent safe disposal of materials or equipment used. He shall be responsible in the case of any failure in this respect leading to damage, which shall be repaired and cleaned as appropriate. Contractor shall ensure protection of sensitive items during paint works, e.g. notices, nameplates, lettering, gauges, sight glasses, light fittings. Blasting dust and grit shall not be allowed to cause contamination of coated surfaces, which are not yet dry.

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SELECTION OF COATING SYSTEM SYSTEM 1

Jacket and Structure to Top of Jacket (including cellar deck), Bottom of Risers, Caissons, Process Pipework to ESDV Termination.

SYSTEM 2

Topsides Structure, Carbon Steel Equipment & Pipework.

SYSTEM 3

Insulated – Topsides Carbon Steel Equipment & Pipework

SYSTEM 4

Controlled Environment/ Internal Areas, Carbon Steel Structure, Equipment & Pipework (excluding insulated systems)

SYSTEM 5

Corrosion Resistant Alloy Equipment and Pipework, Insulated or operating above 50°C (Stainless Steel 316) and 60°C (Duplex Steels and Alloy 825)

SYSTEM 6

Stainless steel and Alloy 825 operating above 150°C, Carbon Steel operating above 120°C, and Flare.

SYSTEM 7

Carbon Steel, Stainless steel and Alloy 825 operating above 120°C (or design above 150°C) where Access is Poor.

SYSTEM 8

Galvanising and Coating over Galvanising

SYSTEM 9

Decks

SYSTEM 10

Internal Surfaces of Carbon Steel Vessels (Hydrocarbon or Seawater)

SYSTEM 11

Internal Surfaces of Carbon Steel Pipework – Corrosion Protection

SYSTEM 12

Internal Surfaces of Pipework – Stainless Steel, Titanium & Nickel-Alloy Insulation Spools

SYSTEM 13

Internal Surfaces of Potable Water Tanks

NOTES: Material that are inherently resistant to external corrosion in the relevant operating conditions such as copper nickel alloys, and titanium, do not require coating. Maintenance painting on live piping is acceptable provided any integrity concerns are assessed and cleared by the Safety Engineer. Stripe coating by brush shall be carried out on all welds, seams, corners and edges and shall be in addition to the requirements of the Schedules. Coating of panels for electrical and instrument enclosures shall be in accordance with the manufacturers proprietary offshore system and shall be subject to review by the Purchaser.

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SYSTEM 1 Scope

JACKET AND STRUCTURE TO TOP OF JACKET (INCLUDING CELLAR DECK), BOTTOM OF RISERS, CAISSONS, PROCESS PIPEWORK TO ESDV TERMINATION

Operating Temperature

Up to 120°C.

Life

> 12 years.

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by fresh water rinse.

2

Blow dry with clean dry compressed air.

Surface Preparation

New Build

Dry abrasive blast clean all steel: Splash zone and region to top of jacket: Submerged zone:

Application

Sa 3 (SIS 05 5900) to achieve an angular anchor profile of 75 – 125µm. Sa 2.5 (SIS 05 5900) to achieve an angular anchor profile of 50 – 75µm.

Maintenance

Wet abrasive blast clean all rusted and damaged areas to Sa 2.5 (including overall sweep blast of sound existing coating). Wet blast primer can be applied to a wet surface provided it is free of water or a slightly gingered dry surface. This is subject to client approval in each case. Flash rusting must be no more than light as defined in the SSPC/ NACE standard for UHP water jetting.

Time between Coats

5 – 24 hours

Metal Temp.

10°C to 50°C

Relative Humidity

< 85%

Method

Airless Spray 450 µm DFT

Submerged

Coat 1

Two component high solids high build glass flake epoxy

Splash zone and region to level 1

Method

Apply thermal spray aluminium by the Arc Spray process using high purity aluminium (minimum purity 99.5%)

Coat 1

TSA

200 µm OR 2 × 100 µm

Coat 2

Air drying silicone aluminium sealer

40 µm DFT

Coat 3

Air drying silicone aluminium sealer

40 µm DFT

TSA in excess of 300 µm shall be rejected. The entire coating shall be removed and re-coated in accordance with the specification. TSA is to be applied in two coats, unless it can be demonstrated that the required thickness can be achieved successfully using a single coat application. The inspection and testing requirements for TSA application along with the qualification of the metal spray operators shall be as per NORSOK Standard M-501 Rev.4 1999. Adhesion pull-off values measured on the test plates shall meet the individual acceptance criteria of 9.0 MPa. Each test plate will be subject to inspection by all parties. In the event that any single adhesion measurement during production drops to a minimum of 9.0 MPa, a further 3 readings shall be taken to achieve an overall average of 10.0 MPa. Each sample plate will be subjected to adhesion testing as specified in EN ISO 4624. Prior to the commencement of the contract all operatives engaged in the application of thermal metal materials must produce sample plates for each coating system. The thickness of the metal spray applied to a non-ferrous substrate is to be determined by using an, Elcometer 345 electronic gauge (or equivalent) fitted with a non-ferrous probe. A sample plate is to be produced by each operative at the commencement of each working shift, this is to be used as a comparison sample for production work completed on that shift. All sample plates are to have the metal spray thickness recorded using an Elcometer gauge (or equivalent). The thickness recorded together with the operative’s name /number is to be attached to the sample plate. Sharp edges and welds shall be rounded or smoothed by grinding (min. radius = 2mm). Where TSA is used no further coating is required to achieve specific colours.

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SYSTEM 2 Scope

TOPSIDES STRUCTURE, CARBON STEEL EQUIPMENT & PIPEWORK

Operating Temperature

Up to 120°C.

Life

Dry blast (New build): Wet blast (Maintenance): Power tool clean (Maintenance):

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by fresh water rinse

2

Blow dry with clean dry compressed air

Surface Preparation

New Build

Dry blast to Sa 2.5 (SIS 05 5900) to achieve an angular anchor profile of 50 – 75µm. Pre-surface preparation not required

Maintenance

Wet abrasive blast clean all rusted and damaged areas to Sa 2.5. Feather (sweep blast) edges of any existing sound coating. Wet blast primer can be applied to a wet surface provided it is free of standing water or a slightly gingered dry surface, subject to Client approval. Flash rusting must be no more than “light” as defined in the SSPC/ NACE standard for UHP water jetting OR If wet blasting not permitted, Power Tool Clean all rusted and damaged areas to ST3

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Time between Coats

24 hours to 7 days

Application

Method Coat 1

Coat 2

Coat 3

Coat 4

UOG-ENG-SPC-45-006

> 12 years > 8 years 18 months to 3 years

Airless Spray

Brush

New Build

Two pack, zinc rich epoxy primer

75 µm DFT

N/A

Maint.

Two pack epoxy wet blast primer

50 µm DFT

Two pack, LTC surface tolerant epoxy

New Build

Low temperature curing, two component high solids high build glass flake epoxy

400 µm DFT

N/A

Maint.

Low temperature curing twopack glass flake epoxy.

400 µm DFT

Two pack LTC high build epoxy undercoat

New Build

Isocyanate-free epoxy acrylic two pack epoxy (for colour matching only)

50 µm DFT

N/A

Maint.

Isocyanate-free epoxy acrylic two pack epoxy (for colour matching only)

50 µm DFT

Two pack LTC high build epoxy undercoat

100 µm DFT

Isocyanate-free epoxy acrylic two pack (for colour matching only)

50 µm DFT

N/A

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100 µm DFT

100 µm DFT

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Protective Coating

SYSTEM 3 Scope

INSULATED – TOPSIDES CARBON STEEL EQUIPMENT & PIPEWORK

Operating Temperature

Up to 150°C

Life

Dry blast (New build): Wet blast (Maintenance): Power tool clean (Maintenance):

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by fresh water rinse

2

Blow dry with clean dry compressed air

Surface Preparation

New Build

Dry blast, to Sa 2.5 (SIS 05 5900) to achieve an angular anchor profile of 50 – 75µm. Pre-surface preparation not required

Maintenance

Wet abrasive blast clean all rusted and damaged areas to Sa 2.5 (including overall sweep blast of sound existing coating) OR If wet blasting not permitted, Power Tool Clean all rusted and damaged areas to ST3 or SSPC SP11.

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Method

Airless spray

Coat 1

New Build

Epoxy phenolic (high cross linked)

150 µm DFT

Maint.

Epoxy phenolic (high cross linked)

150 µm DFT

New Build

Epoxy phenolic (high cross linked)

150 µm DFT

Maint.

Epoxy phenolic (high cross linked)

150 µm DFT

Application

Coat 2

> 12 years > 8 years 18 months to 3 years

NOTE: Special precautions are required when using phenolic coatings to address the safety issues.

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SYSTEM 4 Scope

CONTROLLED ENVIRONMENT/ INTERNAL AREAS, CARBON STEEL STRUCTURE, EQUIPMENT & PIPEWORK (EXCLUDING INSULATED SYSTEMS)

Operating Temperature

Up to 120°C.

Life

Dry blast (New build): Power tool clean (Maintenance):

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by fresh water rinse.

2

Blow dry with clean dry compressed air.

Surface Preparation

New Build

Dry blast to Sa 2.5 (SIS 05 5900) to achieve an angular anchor profile of 50 – 75µm. Pre-surface preparation not required

Maintenance

Power Tool Clean all rusted and damaged areas to ST3.

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Method

Airless spray

Coat 1

LTC two pack surface tolerant epoxy aluminium-containing primer

100 µm DFT

Coat 2

Two pack epoxy acrylic finish

50 µm DFT

Application

UOG-ENG-SPC-45-006

> 12 years 18 months to 3 years

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SYSTEM 5 Scope

CORROSION RESISTANT ALLOY EQUIPMENT AND PIPEWORK, INSULATED OR OPERATING ABOVE 50°C (STAINLESS STEEL 316) AND 60°C (DUPLEX STEELS AND ALLOY 825)

Operating Temperature

-50°C to 150°C.

Life

> 10 years

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by fresh water rinse.

2

Blow dry with clean dry compressed air.

Surface Preparation

New Build

Blast clean using chloride-free aluminium oxide or silicon carbide to achieve a surface profile of 75-100 µm. Blow dry with compressed air

Maintenance

Mechanically abrade with medium emery paper to provide key

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Method

Airless spray OR Brush

Coat 1

New Build

Epoxy phenolic (high cross linked)

150 µm DFT

Maint.

Epoxy phenolic (high cross linked)

150 µm DFT

New Build

Epoxy phenolic (high cross linked)

150 µm DFT

Maint.

Epoxy phenolic (high cross linked)

150 µm DFT

Application

Protective coating is not required for continuous operating temperatures below -50°C.

Coat 2

NOTE: Specification is only suitable for application to in-service pipework with a maximum surface temperature of 50°C. This restriction does not apply if process facilities are taken out of service. Special precautions are required when using phenolic coatings to address the safety issues.

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SYSTEM 6 Scope

STAINLESS STEEL AND ALLOY 825 OPERATING ABOVE 150°C, CARBON STEEL OPERATING ABOVE 120°C, AND FLARE

Operating Temperature

-50 to 400°C.

Life

> 20 years

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by rinse with fresh water with maximum chloride concentration of 30ppm.

2

Blow dry with clean dry compressed air.

New Build

Carbon steel:

Maintenance

Carbon steel: Stainless steel & Incoloy:

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Method

Apply thermal spray aluminium by the Arc Spray/ Flame Spray process using high purity aluminium (minimum purity 99.5%)

Coat 1

TSA

200 µm OR 2 × 100 µm

Coat 2

Air drying silicone aluminium sealer

40 µm DFT

Coat 3

Air drying silicone aluminium sealer

40 µm DFT

Surface Preparation

Application

Protective coating is not required for continuous operating temperatures below –50°C.

Blast clean to Sa 3 (SIS 05 5900) to achieve an angular anchor profile of 75 – 125µm using chilled iron grit. Stainless steel & Alloy 825: Blast clean using chloride-free aluminium oxide or silicon carbide grit to achieve a surface profile of 75-100 µm. Blow dry with compressed air Power Tool Clean all rusted and damaged areas to ST3 Mechanically abrade with medium emery paper to provide key

NOTES TSA in excess of 300 µm shall be rejected. The entire coating shall be removed and recoated in accordance with the specification. TSA is to be applied in two coats, unless it can be demonstrated that the required thickness can be achieved successfully using a single coat application. The inspection and testing requirements for TSA application along with the qualification of the metal spray operators shall be as per NORSOK Standard M-501 Rev.4 1999. Regardless of application method used, adhesion pull-off values measured on the test plates shall meet the individual acceptance criteria of 9.0 MPa. Each test plate will be subject to inspection by all parties In the event that any single adhesion measurement during production drops to a minimum of 9.0 MPa, a further 3 readings shall be taken to achieve an overall average of 10.0 MPa. Each sample plate will be subjected to adhesion testing as specified in EN ISO 4624. Prior to the commencement of the contract all operatives engaged in the application of thermal metal materials must produce sample plates for each coating system. The thickness of the metal spray applied to a non-ferrous substrate is to be determined by using an, Elcometer 345 electronic gauge (or equivalent) fitted with a non-ferrous probe. A sample plate is to be produced by each operative at the commencement of each working shift, this is to be used as a comparison sample for production work completed on that shift. All sample plates are to have the metal spray thickness recorded using an Elcometer gauge (or equivalent). The thickness recorded together with the operative’s name /number is to be attached to the sample plate. Metal spray readings are to be taken after the application of the first coat. Any low thickness areas highlighted to the operative prior to the application of the second coat. These results are to be recorded. The thickness reading process is to be repeated after the application of the second coat of metal spray and recorded. Sharp edges and welds shall be rounded or smoothed by grinding (min. R = 2mm). Where TSA is used no further coating is required to achieve specific colours. UOG-ENG-SPC-45-006

Page 18 of 3535

Revision 01

Protective Coating

SYSTEM 7 Scope

CARBON STEEL, STAINLESS STEEL AND ALLOY 825 OPERATING ABOVE 120°C (OR DESIGN ABOVE 150°C) WHERE ACCESS IS POOR

Operating Temperature

-50 to 150 - 200°C.

Life

18 months to 3 years

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by rinse with fresh water with maximum chloride concentration of 30ppm.

2

Blow dry with clean dry compressed air.

Protective coating is not required for continuous operating temperatures below -50°C.

Surface Preparation

Carbon steel:

Power tool clean to ST3.

Stainless steel & Alloy 825:

Abrade to provide a key with a surface profile of 75-100 µm.

Application

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Method

Airless spray OR Brush

Coat 1

Two pack, epoxy aluminium primer

100 µm DFT

Coat 2

Two pack, epoxy aluminium primer

100 µm DFT

NOTES Some manufacturer’s aluminium primers do not perform satisfactorily at temperatures in excess of 150°C. Therefore test data of tests carried out at maximum operating temperature using the proposed product shall be supplied to the Purchaser for review.

UOG-ENG-SPC-45-006

Page 19 of 3535

Revision 01

Protective Coating

SYSTEM 8 Scope

GALVANISING AND COATING OVER GALVANISING

Operating Temperature

-10 to 65°C.

Life

> 10 years

Pre-Surface Preparation

Galvanising Coating

As per Vendors’ developed procedure 1

Degrease using high-pressure detergent wash, followed by fresh water rinse.

2

Blow dry with clean dry compressed air.

3

Previously painted galvanised steel requires pre-surface treatment followed by coats 3 – 5 of coating application.

Surface Preparation

Galvanising

As per Vendors’ approved procedure

Coating

Abrade all new galvanising and aged galvanising by sanding or sweepblasting with fine abrasive (80 – 100 mesh) at 80 psi. Power Tool Clean all rusted and damaged areas to ST3.

Application

GalvanIsing

Method

Coating

Not applicable for handrails, gratings, ladders and safety hoops

As per Vendors’ approved procedure.

Handrails, gratings, ladders & safety hoops: Backing flanges and other

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 80%

Method

Airless spray

Coat 1

Prime bare steel with a touch-up coat of LTC two pack, surface tolerant epoxy aluminium primer

100 µm DFT

Coat 2

Phosphoric acid based etching solution.

5 -20 µm DFT

Coat 3

Apply full overall intermediate coat of two pack, surface tolerant LTC epoxy MIO primer

100 µm DFT

Coat 4

Two pack epoxy

50 µm DFT

Coat 5

Two pack epoxy (Only required if specific final light colour is required)

50 µm DFT

NOTE: Special precautions are required when using phosphoric acid to address the safety issues.

UOG-ENG-SPC-45-006

Page 20 of 3535

Revision 01

Protective Coating

SYSTEM 9 Scope

DECKS

Operating Temperature

-20 to 50°C.

Life

Dry blast to Sa 2.5 (New build): Wet blast (Maintenance): Power tool clean (Maintenance):

Pre-Surface Preparation

Degrease using high-pressure detergent wash followed by fresh water rinse (as necessary). Blow dry with clean dry compressed air.

Surface Preparation

New Build

Dry blast to Sa 2.5 (SIS 05 5900) to achieve an angular anchor profile of 50 – 75µm. Pre-surface preparation not required

Maint.

Wet abrasive blast clean all rusted and damaged areas to Sa 2.5. Feather (sweep blast) edges of any existing sound coating Blow dry with clean dry compressed air OR Power Tool Clean all rusted and damaged areas to ST3

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Time between Coats

24 – 48 hours

Method

Airless Spray

Coat 1

Two pack zinc rich epoxy

75 µm DFT

Surface tolerant aluminium

125 µm DFT

Coat 2a

Aggregate dressed heavy-duty anti-slip solventless epoxy (coal tar free) deck coating by trowel to a wet film thickness of 3.0 mm prior to dressing with heavy nonsparking aggregate.

3mm DFT

Aggregate dressed heavy-duty antislip solventless epoxy (coal tar free) deck coating by trowel to a wet film thickness of 3.0 mm prior to dressing with heavy non-sparking aggregate.

3mm DFT

Coat 2b

2 pack epoxy + non-sparking aggregate

250µm

2 pack epoxy + non-sparking aggregate

250µm

Coat 3

Apply by brush isocyanate-free epoxy sealer coat after screed has cured for 24 hours and surplus aggregate has been removed. Markings for escape routes to be white hatched lines.

50 µm DFT

Apply by brush isocyanate-free epoxy sealer coat after screed has cured for 24 hours and surplus aggregate has been removed. Markings for escape routes to be applied as white hatched lines.

50 µm DFT

Application

> 12 years > 8 years 18 months to 3 years

Brush Primer & Trowel

NOTES: Coat 2a to be used for the following:

ƒ

All areas on the weather deck.

ƒ

Primary access routes, including escape routes on all remaining decks.

ƒ

Lay down areas

Coat 2 B to be used for other deck area apart from galvanised gratings and areas covered by 2a. If screed system for primary decks cannot be applied due to time constraints, apply EPOK TREAD tile system as per manufacturer’s recommendations.

UOG-ENG-SPC-45-006

Page 21 of 3535

Revision 01

Protective Coating

SYSTEM 10 Scope

INTERNAL SURFACES OF CARBON STEEL VESSELS (HYDROCARBON OR SEAWATER)

Operating Temperature

-50 to 110°C.

Life

If %Benzene in crude & chemicals ≥ 2%:

4 – 7 ye

If %Benzene in crude & chemicals < 2%:

> 12 ye

Protective coating is not required for continuous operating temperatures below -50°C.

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by fresh water rinse.

2

Blow dry with clean dry compressed air.

Surface Preparation

New Build

Dry abrasive blast clean all areas to Sa 2.5 with a blast profile of 50 – 100 µm.

Maintenance

Wet abrasive blast clean all exposed and damaged areas to Sa 2.5 with a blast profile of 50 – 100 µm. Sweep blast existing sound coating. Where vessels have been in service, a second blast clean is essential after the internal examination/repairs to ensure all surface contamination is removed. Blow dry with clean dry compressed air

Application

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Method

Airless spray

Coat 1

Two pack, vinyl ester holding primer, buff colour

50 µm DFT

Coat 2

Glass reinforced, vinyl ester, buff colour

500 µm DFT

Coat 3

Glass reinforced, vinyl ester, buff colour

500 µm DFT

Coat 4

Glass reinforced vinyl ester, white colour. 2nd coat of glass flake, vinyl ester coating can be replaced with modified vinyl ester coating containing silicon carbide for improved abrasion resistance where fluids contain sand

500 µm DFT

NOTES: Primer to be optional. All internal welds are to be ground smooth where accessible. Inaccessible welds shall be inspected for smoothness and freedom from weld spatter and slag Flange faces are to be rebated as per the drawing in figure 1in order that the coating can be carried from the pipe bore out across the inner part of the flange face. This procedure will prevent service attack of gasket seal face. Accessible sharp edges to be coated shall be ground to a minimum radius of 1.5mm. Each internally coated vessel shall be marked in black letters “GLASS FLAKE LINED – NO HOT WORK”. Replacement coatings shall utilise the same coating type, from the same Manufacturer as the original coating. If this cannot be achieved compatibility tests shall be carried out. Vinyl ester coatings are suitable for immersion service up to temperatures of 100°C. Localised general wastage of internal surfaces shall be protected using a laminating resin reinforced with glass roving as per the manufacturer’s recommendations. All internally lined vessels shall be holiday detected in accordance with NACE RP0-188. Repairs shall be done with the same materials as used for original lining. Only repaired areas should be re-holiday checked after repairs. Do not recheck the lining that has already been checked and found to be holiday free. Consult the vendor for proper surface preparation to repair areas.

UOG-ENG-SPC-45-006

Page 22 of 3535

Revision 01

Protective Coating

SYSTEM 11 Scope

INTERNAL SURFACES OF CARBON STEEL PIPEWORK – CORROSION PROTECTION

Operating Temperature

-50 to 105°C.

Life

If %Benzene in crude & chemicals ≥ 2%:

4 – 7 ye

If %Benzene in crude & chemicals < 2%:

> 12 ye

Protective coating is not required for continuous operating temperatures below -50°C.

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by fresh water rinse.

2

Blow dry with clean dry compressed air.

Surface Preparation

Dry abrasive blast clean all areas to Sa 2.5 with a blast profile of 50 – 100 µm. Sweep blast existing sound coating. Where pipe spools been in service, a second blast clean is essential after the internal examination/repairs to ensure all surface contamination is removed. Blow dry with clean dry compressed air

Application

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 80%

Method

Airless spray

Coat 1

Two pack, vinyl ester holding primer, buff colour

50 µm DFT

Coat 2

Glass reinforced, vinyl ester, buff colour

500 µm DFT

Coat 3

Glass reinforced, vinyl ester, buff colour

500 µm DFT

Coat 4

Glass reinforced vinyl ester, white colour. 2nd coat of glass flake, vinyl ester coating can be replaced with modified vinyl ester coating containing silicon carbide for improved abrasion resistance where fluids contain sand

500 µm DFT

NOTES: Primer to be optional. Replacement coatings shall utilise the same coating type, from the same Manufacturer as the original coating. If this cannot be achieved compatibility tests shall be carried out. Vinyl ester coatings are suitable for immersion service up to temperatures of 105°C. Localised general wastage of internal surfaces shall be protected using a laminating resin reinforced with glass roving as per the manufacturer’s recommendations. Inter-coat and final coat spark testing shall be done using kV settings recommended by coating supplier. For corrosive service flange faces are to be weld overlaid with an appropriate corrosion resistant alloy, as per the material selection report and pipe class. Flange faces are to be rebated as per the drawing in figure 1 in order that the coating can be carried from the pipe bore out across the inner part of the flange face to prevent service attack of gasket seal face. All internal welds are to be ground smooth where accessible. Inaccessible welds shall be inspected for smoothness and freedom from weld spatter and slag Accessible sharp edges to be coated shall be ground to a minimum radius of 1.5mm After completion of internal coating, the external surfaces shall be blast cleaned and coated as per system 2. Each internally coated spool shall be marked in black letters ‘GLASS FLAKE LINED – NO HOT WORK, HANDLE WITH CARE’. All internally lined pipe spools shall be holiday detected in accordance with NACE RP0-188. Repairs shall be done with the same materials as used for original lining. Only repaired areas should be re-holiday checked after repairs. Do not recheck the lining that has already been checked and found to be holiday free. Consult the vendor for proper surface preparation to repair areas.

UOG-ENG-SPC-45-006

Page 23 of 3535

Revision 01

Protective Coating Each potential coating Contractor shall carry out a coating test prior to award of contract. Prior test results would be reviewed if relevant. The test shall involve the following: •

Two internal coatings shall be applied to fabricated pipe spools manufactured from any grade of steel of nominal size 1.5 - 2” and 6” - 10”. For the purpose of this exercise it would be acceptable to completely weld the root and hot passes only. The spools shall incorporate a 90° long radius elbow welded to two pipes and a flange at one end. The minimum length of the pipe sections shall be 2m.

•

The test spool shall be internally coated and inspected fully in accordance with this specification.

•

On completion of all coating stages the test spool should be sectioned longitudinally along the intrados and extrados of the elbow and one side of the flange. Coating thickness checks shall be made at d/4 intervals (where d = pipe diameter) along the cut edges at a magnification of ×10 and the Holiday test shall be repeated on all exposed surfaces.

UOG-ENG-SPC-45-006

Page 24 of 3535

Revision 01

Protective Coating

SYSTEM 12 Scope

INTERNAL SURFACES OF PIPEWORK – STAINLESS STEEL, TITANIUM & NICKEL-ALLOY INSULATION SPOOLS

Operating Temperature

Rubber coating:

-10°C to 85°C (standard system)/ 110°C (special system).

Epoxy coating:

-50 to 110°C

Life

> 5 years

Pre-Surface Preparation

Degrease using high-pressure detergent wash followed by rinse with fresh water with maximum chloride concentration of 30ppm. Blow dry with clean dry compressed air.

Surface Preparation

Blast clean using chloride-free aluminium oxide or silicon carbide grit to achieve a surface profile of 75-100 µm. Blow dry with compressed air

Application

Metal Temp.

10°C to 50°C

Relative Humidity

< 50%

Time between Coats

6 – 48 hours (epoxy coating)

Method

Rubber Lining (Seawater duty)

Epoxy Lining (Hydrocarbon duty)

Coat 1

See below

Copon KS16W

50 - 75 µm DFT

Coat 2

Copon KS16W

50 - 75 µm DFT

Coat 3

Copon KS16W

50 - 75 µm DFT

Coat 4

Copon KS16W

50 - 75 µm DFT

NOTES: Rubber Coating Spools are to be designed to contain no more than one bend/ elbow. Internal flange weld roots must be ground flush and the flange/ bore edge radiused to 5.0 mm (equal to the rubber coating thickness). Spool dimensions must be adjusted to allow for 5.0 mm thick ebonite rubber to be applied to flange faces. Seawater - 5.0 mm thick neoprene, Shore A Hardness 65 ± 5. Produced Water - 5.0 mm thick abrasion resistant natural rubber, Shore A Hardness 45 ± 5. Maximum operating temperature of this rubber is 85°C. Higher operating temperatures necessitate use of neoprene which does not have such good abrasion resistance. Flange faces shall be lined with ebonite with a thickness of 5 mm and Shore D Hardness 70 ± 5 This is relatively incompressible and still requires that a suitable flat rubber gasket is used for rubber lined flange faces. All rubber coatings shall be cured by applying the vulcanising process in a steam autoclave.

UOG-ENG-SPC-45-006

Page 25 of 3535

Revision 01

Protective Coating Epoxy Lining Each potential coating Contractor shall carry out a coating test prior to award of contract. Prior test results would be reviewed if relevant. The test shall involve the following: •

Two internal coatings shall be applied to fabricated pipe spools manufactured from any grade of steel of nominal size 1.5 - 2” and 6” - 10”. For the purpose of this exercise it would be acceptable to completely weld the root and hot passes only. The spools shall incorporate a 90° long radius elbow welded to two pipes and a flange at one end. The minimum length of the pipe sections shall be 2m.

•

The test spool shall be internally coated and inspected fully in accordance with this specification.

•

On completion of all coating stages the test spool should be sectioned longitudinally along the intrados and extrados of the elbow and one side of the flange. Coating thickness checks shall be made at d/4 intervals (where d = pipe diameter) along the cut edges at a magnification of ×10 and the Holiday test shall be repeated on all exposed surfaces.

Accelerated drying times can be achieved as follows: Temperature, °C

Overcoating Time, Hours

15

24

20

16

25

12

30

8

35

6

Maximum time between coatings: 48 hours. The completed coating shall be cured in accordance with the following guidelines prior to entry into service: Temperature, °C

Curing Time, Days

20

7

32

4

The coating shall be brush applied to the inside of small diameter nozzles where spraying is impractical. It is permissible to apply Copon KS16W by pouring successive coatings through spools if diameter/ configuration is unsuitable for spray application. Flange faces are to be rebated as per the drawing in figure 1 in order that the coating can be carried from the pipe bore out across the inner part of the flange face. This procedure will prevent service attack of gasket seal face. The coating shall stop on the flange rebate. All internally lined pipe spools shall be holiday detected in accordance with NACE RP0-188. Repairs shall be done with the same materials as used for original lining. Only repaired areas should be re-holiday checked after repairs. Do not recheck the lining that has already been checked and found to be holiday free. Consult the vendor for proper surface preparation to repair areas.

UOG-ENG-SPC-45-006

Page 26 of 3535

Revision 01

Protective Coating

SYSTEM 13 Scope

INTERNAL SURFACES OF POTABLE WATER TANKS

Operating Temperature

-10 to 50°C

Life

> 10 years

Pre-Surface Preparation

1

Degrease using high-pressure detergent wash, followed by fresh water rinse.

2

Blow dry with clean dry compressed air.

Surface Preparation

New Build

Dry abrasive blast clean all areas to Sa 2.5 (SIS 05 5900) to achieve an angular anchor profile of 50 – 75µm. Sweep blast existing sound coating

Maintenance

Dry abrasive blast clean all exposed and damaged areas to Sa 2.5 with a blast profile of 50 µm. Sweep blast existing sound coating. Where vessels have been in service, a second blast clean is essential after the internal examination/repairs to ensure all surface contamination is removed. Blow dry with clean dry compressed air

Time between Coats

5 – 24 hours

Metal Temp.

10 °C to 50°C

Relative Humidity

< 85%

Method

Heated airless spray

Coat 1

Solvent free 100% solids epoxy coating that is approved by the Drinking Water Inspectorate (DWI) or Norwegian Health Authority for potable water

Application

600 µm DFT

NOTE Spark test after minimum 24 hours curing using a kV setting recommended by coating manufacturer. All internally lined vessels shall be holiday detected in accordance with NACE RP0-188. Repairs shall be done with the same materials as used for original lining. Only repaired areas should be re-holiday checked after repairs. Do not recheck the lining that has already been checked and found to be holiday free. Consult the vendor for proper surface preparation to repair areas.

UOG-ENG-SPC-45-006

Page 27 of 3535

Revision 01

Protective Coating

11.0

PICKLING AND PASSIVATION

11.1

Base Material

All stainless steel base materials (316L, 22%Cr duplex, 25%Cr super duplex, 6%Mo, 17/4PH etc.) require to be supplied in the pickled and passivated condition. 11.2

After Welding

Pickling and passivation of weld areas is required for the following duties: 11.2.1 Seawater (25%Cr super duplex, 6%Mo) Internal surfaces. 11.2.2 Corrosive duty (including all process) (stainless steels, e.g. 316L, 22%Cr & 25%Cr duplex) External surfaces that are not subsequently protected by coating. 11.2.3 Clean duty (e.g. nitrogen, air) (stainless steel 316L) Not required.

UOG-ENG-SPC-45-006

Page 28 of 3535

Revision 01

Protective Coating

12.0

COLOUR SCHEDULE

12.1

General

Unless stated otherwise, British Standard colours referred to are to BS 4800-1989. All equipment, pipework, valves flanges and fittings are to be painted throughout the entire length, including in flange bolt holes in accordance with ground colour specified. Working pressures and arrows indicating direction of flow should be shown on ground colour, preferably in black (or white where contrast is required) near to junctions, valves and vessels.

12.2

Pipework Identification

Colour banding maybe by painting or by using a durable adhesive PVC tape, which must be suitable for external weathering. The tape should be applied in accordance with manufacturer’s instructions. Banding shall be applied at: •

Bulkheads, deck and other penetrations, major changes of direction

•

Package and vessel termination points, pipe junctions

• Positions such that banding sets are normally visible and no greater than 7m apart. The primary colour (outside) banding shall be placed directly adjacent to and on each side of, the secondary colour (inside) band. Width of bands shall be 150mm. A flow direction arrow in black shall be located on the pipe downstream of the colour bands on pipe-work. Arrows shall be 150 - 200 mm long x 25mm wide at the base of the band head and at the tail. Stainless steel pipework and pipework coated with thermal spray aluminium shall have service indicated by colour banding alone, unless otherwise specified. Insulated piping shall have service indicated by colour banding alone over the cladding. Colour banding shall be in accordance with the following table and if required with BS 1710:1984 and amendment No 1-1989.

12.3

Piping System Colour Schedule

Piping shall be painted white in accordance with BS4800 00E55. For corrosion resistant alloys where protective coating is not required, and for thermally sprayed aluminium surfaces, the material shall be left self-coloured. All piping shall be identified by service using colour bands in accordance with table 1. These colours shall normally be applied by coloured adhesive plastic tape markings rather than by painting, and such markings shall as a minimum be placed at all bulkhead and deck penetrations, either side of every valve, at each tee or branch connection. In order to avoid any requirement for separate marking of flow direction with arrows and for individual service names, the colour marking tapes may incorporate flow arrows and service names if desired.

Service Name

Outer Bands

BS4800 Colour

Inner Bands (TO BS1710 in bold)

BS4800 Colour

Instrument Air

Light Blue

20 E 51

Plant Air

Light Blue

20 E 51

Biocide

Brown

06D43

Lettering - “Biocide”

Base Oil

Brown

06 C 39

White

Chemical Additive

Brown

06D43

Lettering - “Chemical Additive”

Glycol

Brown

06 D 43

H.P. Cement Slurry

Black

00 E 53

White

Corrosion Inhibitor

Brown

06 E 50

(Lettering)

L.P. Cement Slurry

Black

00 E 53

White

00 E 55

Methanol

Violet

22 D 45

L.P. Cement Powder

Black

00 E 53

White

00 E 55

Closed Drains

Grey

10 A 11

Non-hazardous Open Drains

Grey

10 A 11

Green

14 E 51

Hazardous Open Drains

Grey

10 A 11

Yellow

08 E 51

Emulsion Breaker

Brown

06 D 43

(Lettering)

UOG-ENG-SPC-45-006

Page 29 of 3535

00 E 55

00 E 55

Revision 01

Protective Coating

Service Name

Outer Bands

BS4800 Colour

Inner Bands (TO BS1710 in bold)

BS4800 Colour

Firefighting Foam

Black

00 E 53

Red

04 E 53

Fuel Gas

Yellow

08 E 51

Lt. Orange

BS 381c shade 557

Aviation Fuel

Brown

06 C 39

Yellow

BS 381c shade 309

Diesel Oil

Brown

06 C 39

Grey

00 A 05

CO2

Red

04 E 53

Halon

Red

04 E 53

Inert Gas

Light Blue

20 E 51

Black

00 E 53

Sodium Hypochlorite

Brown

06 E 50

Lettering

H.P. Drilling Mud

Black

00 E 53

Blue

20 E 51

Choke and Kill Fluids

Black

00 E 53

Violet

22 C 37

L.P. Drilling Mud

Black

00 E 53

Blue

18 E 53

L.P. Mud Additive Powders (Baryte/Bentonite)

Black

00 E 53

Hydraulic Fluid (Oil Based)

Brown

06 C 39

Black

00 E 53

Hydraulic Fluid (water based)

Brown

06 D 43

Black

00 E 53

Lube Oil

Brown

06 C 39

Pink

04 C 33

Seal Oil

Brown

06 C 39

Yellow

08 C 35

Utility Oil

Brown

06 C 39

Hydrocarbon Condensate

Yellow

08 E 51

Brown

08 C 35

Hydrocarbon Gas

Yellow

08 E 51

White

00 E 55

Cold Hydrocarbons

Yellow

08 E 51

White

00 E 55

Scale Inhibitor

Brown

06 D 43

(Lettering)

Atmospheric Vent

Yellow

08 E 51

Silver Grey

10 A 03

Vacuum

Light Blue

20 E 51

White

00 E 55

H.P. Flare

Yellow

08 E 51

Grey

10 A 11

L.P. Flare

Yellow

08 E 51

Grey

10 A 07

Vessel Trim

Colour as vessel service

Seawater

Green

14 E 51

Brine (Completion Fluid)

Green

14 E 51

Green

12 C 39

Cooling Medium

Green

14 E 51

White

00 E 55

Potable Water

Green

14 E 51

Auxiliary Blue

18 E 53

Firewater

Green

14 E 51

Red

04 E 53

Heating Medium

Green

14 E 51

Brown

06 D 43

Flushing / Jet Water

Yellow

08 E 51

Green

14 E 51

Drilling Water

Green

14 E 51

Brown

06 C 39

Produced Water

Yellow

08 E 51

Green

14 E 51

Service Water

Green

14 E 51

Auxiliary Blue

18 E 53

BOP Test Water

Green

14E51

Auxiliary Blue

18E53

Sewage

Grey

10 A 11

Black

00 E 53

Exhaust Gas

Thermal spray aluminium

Biocide

Brown

06D43

Lettering - “Biocide”

pH Correction

Brown

06D43

Lettering - “pH Correction”

Cuttings Injection (H.P.)

Black

00 E 53

Cuttings Slurry (L.P.)

Black

00 E 53

UOG-ENG-SPC-45-006

Page 30 of 3535

Revision 01

Protective Coating

12.4

Equipment and Structure Colour Schedule

Equipment and platform coating shall be in accordance with this Colour Schedule except where subject to mandatory Government Regulations. All colours shall conform to BS 4800-1989 (five reference characters) and BS 381c (three reference characters). All machinery should be accepted in vendor standard colours unless there is minimal cost impact. Exceptions are mandatory safety items such as coupling guards, cranes etc. where the specified colours are required. Item/ Area

Ground Colour Colour

STEELWORK

TOWERS AND VESSELS CRUDE OIL AND GAS PROCESSING

BS Shade

Additional Colour Markings

Band

BS Shade

Topsides structure

GREY

00A01

Splash zone to top of jacket

As applied (TSA)

N/A

Solid stairtreads and walkways

DARK GREEN

Jotun 137

Kickplates

OFF WHITE

08B15

Internal non-slip surfaces

DARK SEA GREY

638

Runway beams

YELLOW

08E51

Weight limit in 150 mm high letters

Temporary supports, sea fastenings etc.

ORANGE

06E51

N/A

Installation bumpers

GREEN

14E51

Installation guides (including pins)

RED

04E53

Designated laydown areas

YELLOW/ BLACK

In-deck tanks

Deck plate forming tank roof to be painted with diagonal 500mm wide Red/White stripes. Perimeter of tank roof to be marked with a 755mm white band broken at 3000mm intervals by the words “XXX TANK” stencilled in white 100mm high lettering

Tanks

WHITE

00E55

Towers, Vessels, Heat Exchangers

WHITE

00E55

WELL XMAS TREES

SILVER

WELLHEAD CONTROL EQUIPMENT

RED

WELL SUBSURFACE COMPLETION – REPAIR OR SERVICE EQUIPMENT

Manufacturer's standard colours

ELECTRICAL

UOG-ENG-SPC-45-006

H.V. Switchgear; L.V. Switchgear; Electrical Panels/ Cubicles; Distribution Boards; Transformers; L.V. Motors

LIGHT ADMIRALTY GREY (Per supply agreement)

Page 31 of 3535

N/A

BLACK

Perimeter to be marked with 75mm yellow Band. Inside area to be painted with alternating black/ yellow diagonal stripes 500mm wide ters

N/A YELLOW

00E51

N/A 539

N/A N/A

697

N/A

Revision 01

Protective Coating

Item/ Area

Ground Colour Colour

BS Shade

Additional Colour Markings

INSTRUMENTATION

Instruments, Regulators; Instruments Panels; Insts for Panel Mounting; Mimic diagram panel; Mosaic panel; Instrument housings; Instrument air or gas. All equipment should be accepted in vendor standard colours unless there is minimal cost impact. Exceptions are mandatory safety items such as coupling guards, cranes etc. where the specified colours are required.

EAU DE NIL

216

N/A

MACHINERY

All machinery motors, compressors etc.

BLUE

18E53

N/A

Machinery hand controls, gear cases, couplings guards, caution signals, moving equipment (such as overhead cranes, etc.), chain hoists, runway beams, etc.

YELLOW

08E51

Pumps

OFF WHITE

08B15

Emergency shower booths

GREEN

14E53

Diagonal Lines

Fire Fighting Equipment

RED

539

N/A

Dangerous material

WHITE

00E55

Safe Materials

WHITE

00E55

Protection Materials

GREEN

Escape Routes- 1200mm wide band to include 75mm fluorescent edge marking

DARK GREEN

SAFETY

UOG-ENG-SPC-45-006

BS Shade

WHITE

00E55

Checks

RED

539

Checks

GREEN

14E53

14E53

N/A

N/A

N/A

Jotun 137

75mm Wide Bands at edges of Escape Route

Photo-luminescent Paint

Emergency Exit Door Outlines/ Handles & Pushbars MISCELLANEOUS

Band

50mm wide strip around doors

Exterior Paintwork of: i) Plant House ii) Ventilators iii) Modules

OFF WHITE

08B15

Interior Paintwork of: i) Control Rooms ii) Modules iii) Lavatories, etc.

OFF WHITE (or to suit architectural features)

08B15

Information Signs

BLUE

18E53

Page 32 of 3535

N/A

Revision 01

Protective Coating

Item/ Area

Ground Colour Colour

BS Shade

Additional Colour Markings

DOORS (Carbon Steel only, Stainless Steel doors to be unpainted)

General - Internal- External

OFF WHITE

08B15

Control Room - InternalExternal

RED

539

PLATFORM, PRODUCTION WORK AND CRANES, HOISTS, MOBILE WINCHES, DRILLING AND PRODUCTIONN SITES

Helicopter Landing Identification

Statutory requirements

Communication Aerial Towers

WHITE

00E55

Power units

ORANGE

557

Hoists and davits

ORANGE

557

Crown and travelling blocks

ORANGE

557

Swivels

RED

539

Crane Jibs and Gantries, Derricks and Masts, Exhaust Stacks

WHITE

00E55

Band Interval to be scaled in accordance with height/ length of tower jib so that a min of 3 RED bands are clearly visible. Bands not less than 0.5m not more than 6m

Crane and Hoist Machinery Housings

ORANGE

557

N/A

Crane Driver Compartment

RED

557

UOG-ENG-SPC-45-006

Page 33 of 3535

Band

BS Shade

N/A

N/A

RED

539

Revision 01

Protective Coating

FIGURE 1 FLANGE REBATE FOR GLASS FLAKE EPOXY LINED VESSELS AND PIPEWORK

Flange Face

Coating

RF WN Flange

Rebate width = 1/3 of flange face width

Corrosion Resistant Overlay (alloy 625) to extend 20 mm into bore of flange

5° ± 1° radius (typ) 20 mm

Rebate Depth (see note 1)

Bore

Gasket

NOTE:

1. Coating thickness required in the rebated area shall be as referenced in the applicable table + 0mm / - 0.1mm 2. Rebate diameter shall be 10mm - 20mm greater than the diameter of the inner sealing face of the gasket.

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