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Protection of crude water filtration tanks from seawater

Project Coating of a coarse water filter vessel
Target Protecting components against sea water damage.
Photo description

The new vessel, uncoated.

Vessel coated internally and stripe coated externally in preparation for top coat.

Vessel externals coated with first full coat of Plasmet ZF.

Customers and industries
Oil & gas industry. UK
Target equipment
Seawater equipment
Target Item
Filter vessel
Coating period
September 2007.
Scope of work
Internals of new vessel protected against sea water damage using Corroglass 600 Series and Polyglass VEF. Rebate flanges to protect against crevice corrosion.
Terminate coating on steel rings.
Materials used
Polyglass VEF.
Plasmet ZF/Corrothane AP1.
Coating process
Internal coating system.
Grit blasted internally to ISO 8501 - Cleanliness Standard SA 21/2.
Coated internally using Corroglass 600 Series/Polyglass VEF to a minimum 1.25mm DFT
Thickness checked and spark tested at 19Kv.
Flange faces rebated and coated to prevent crevice corrosion.
External coating system
Grit blasted externally to ISO 8501-1 – Cleanliness Standard SA 2.
Applied two coats of Plasmet ZF with a topcoat of Corrothane AP1.
Merits of this application
Polyglass offers a remarkably low permeation rate, combined with excellent resistance to abrasion and cathodic disbondment. The inherent durability and undercutting resistance of this high performance coating enables it to remain intact, even when damaged through to the metal substrate, with negligible under-film creep.
Corrocoat Japan credentials etc
Polyglass VEF has a proven track record protecting components against sea water damage.
Many projects completed by Corrocoat for use within a sea water environment are still working well after more than 25 years in service.