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11.16 Coating System 9: Light Duty Area Non-Skid Steel Deck Coating

Surface Preparation Grit blast to ISO 8501-1 [7] SA2.5 Blast profile 75 m to 100 m Blast roughness:- Quadrant 3 of the Elcometer 125 Surface Roughness Comparator

Primer Zinc Phoshate Epoxy 50 m NDFT

1st

Coat Modified Epoxy 350 m NDFT

Aggregate Non-Sparking Aggregate N/A

2nd

Coat Modified Epoxy 200 m NDFT

Total 600 m NDFT

Notes: i) Coating system 8 shall be used on decks not subject to heavy traffic.

ii) Roof surfaces where there is no normal access shall be coated with Coatings System 9 without the aggregate.

iii) Where written permission for the use of mechanical surface preparation methods has been given by BG Tunisia, Coating System 8M is to be used.

11.17 Coating System 9M: Light Duty Area Non-Skid Steel Deck Coating Mechanically Prepared Surfaces

Surface Preparation Mechanically Prepare to SSPC-SP11 [33]

Primer Zinc Phoshate Epoxy 50 m NDFT

1st

Coat Modified Epoxy 350 m NDFT

Aggregate Non-Sparking Aggregate N/A

2nd

Coat Modified Epoxy 200 m NDFT

Total 600 m NDFT

Notes: i) The performance of Coating System 9 is degraded when applied to a mechanically prepared surface. System 9M shall only be used to repair small isolated breakdown areas.

11.18 Coating System 10: Insulated & Uninsulated Ferritic and Stainless Steels

This Coating System is applicable to:

a) New build or replacement insulated austenitic stainless steel pressure vessels, pipe, fittings and in-line components with PREN < 30 operating in the range 60C to 150C.

b) New build or replacement Insulated austenitic stainless steel pressure vessels, pipe, fittings and in-line components with PREN < 30 operating above 150C but cycling into the range 60C to 150C.

c) New build or replacement insulated austenitic stainless steel equipment, piping & in-line components with 30 PREN < 40 operating in the range 100C to 150C.

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d) New build or replacement insulated austenitic stainless steel equipment, piping & in-line components with 30 PREN < 40 operating above 150C but cycling into the range 100C to 150C.

e) New build or replacement stainless steel equipment, piping & in-line components with PREN 40 operating in the range 110C to 150C.

f) New build or replacement insulated stainless steel equipment, piping & in-line components with PREN 40 operating above 150C but cycling into the range 110C to 150C

g) New build or replacement insulated ferritic steel equipment, piping and in-line components operating in the range -4C to 150C.

h) New build or replacement insulated ferritic steel equipment, piping and in-line components operating above 150C but cycling into the range -4C to 150C.

Surface Preparation Grit blast to a standard visually analogous to ISO 8501-1 [7] SA3 Blast profile 50 m to 75 m Blast roughness:- Quadrant 2 of the Elcometer 125 Surface Roughness Comparator

1st

Coat Thermal Spray Aluminium 250 m NDFT

Sealer Coat Epoxy Phenolic 40 m NDFT

Total 290 m NDFT

11.19 Coating System 11: Insulated & Uninsulated Ferritic and Stainless Steels On-site System.

This Coating System is applicable to:

a) On-site repairs to ferritic and stainless steel pipework and components coated with Coating System 10.

b) Non-insulated ferritic equipment, pipework & in-line components operating in the range -4C to 150C.

c) Non-insulated portions of insulated equipment, piping & in-line components (e.g. nozzles, clips, flanges, brackets etc.) including exposed areas at personnel protection mesh guards.

Surface Preparation Grit blast to a standard visually anomalous to ISO 8501-1 [7] SA2.5 Blast profile 35 m to 50 m Blast roughness:- Quadrant 2 of the Elcometer 125 Surface Roughness Comparator

1st Coat: Epoxy Phenolic 100 m NDFT

2nd Coat: Epoxy Phenolic 100 m NDFT

Total 200 m NDFT

Notes: i) Where written permission for the use of mechanical surface preparation methods has been given by BG Tunisia, Coating System 11M is to be used.

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