OVERVIEW: In the complete refurbishment of the underside of this floating structure, some areas were replaced. Other areas required repairs to be done in-situ by using underwater curing epoxies. A team of experienced divers applied the underwater curing Epo chem™ system, which is able to provide full coverage to surfaces where ideal surface preparation cannot be achieved.
INDUSTRY
ENVIRONMENT
Seawater
SUBSTRATE
Steel Brackets
CHALLENGE
The use of underwater curing epoxies was the most practical solution for this project. In the complete refurbishment of the underside of this floating structure, some areas were replaced. Other areas required repairs to be done in-situ by using underwater curing epoxies. A team of experienced divers applied the underwater curing epoxy coating.
SOLUTION
Chemco’s surface tolerant Epo chem™ system is able to provide full coverage to surfaces where ideal surface preparation cannot be achieved
SCOPE
Repairs were carried out at low tide where possible. Freshwater washing sections provide suitable surface preparation before applying the underwater curing epoxies
Removal of large, flaking corroded areas and coating back to bare steel by mechanical preparation using pneumatic needle gun, air chisel, scabbling and bristle blaster
Preparation underwater to St 2 by using an underwater grinder
Primer applied to create a continuous coating without pinholes wearing gloves and application mitts
Product lathered on in small, workable sections and cured overnight
The next day at low tide, the repair area above the surface washed with fresh water, then RA 500M, glass flake filled topcoat applied to above and below water sections
PRODUCTS
OUTCOME
By coating with Epo chem™, follow up inspections indicate the coating and repairs are still in good condition and is expected to exceed 10 years life in service
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