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Floating Restaurant Structure Repairs Using Underwater Curing Epoxies

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Floating Restaurant Structure Repairs Using Underwater Curing Epoxies

Industry

Marine

Date

October 2017

Substrate

Steel Brackets

Epo-chem™ RS 500P a surface and moisture tolerant primer

Epo-chem™ RA 500M a glass flake filled epoxy

Environment

Seawater

Challenge                  

The use of underwater curing epoxies were the most practical solution for this project. In the complete refurbishment of the underside of this floating structure some areas were replaced. Others areas required repairs to be done in-situ by using underwater curing epoxies. A team of experienced divers applied the underwater curing epoxy coating.

Chemcote’s Solution

Chemcote’s surface tolerant Epo chem™ system is able to provide full coverage to surfaces where ideal surface preparation cannot be achieved

Condition after application of 2nd coat

After application of second coat
After application of second coat
Final Application

Scope                      

Repairs were carried out at low tide where possible. Fresh water 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 was lathered on in small, workable sections and cured overnight

The next day at low tide, the repair area above the surface was washed with fresh water, then RA 500M, glass flake filled topcoat was applied to above and below water sections

Results                

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