OVERVIEW: The Floating heads and channel end covers were originally coated by another contractor with varying results. Made from exotic materials, they had pitting along the sealing face and localised areas from their environment of salt water at elevated temperature.
RB 332 was applied to the internals to prevent long term corrosion.
INDUSTRY
ENVIRONMENT
Salt water at elevated temperature
SUBSTRATE
Floating heads and channel end covers cast from various exotic materials
CHALLENGE
The end covers were originally coated by another contractor with varying results. Some items were made from exotic materials and had minor pitting along the sealing face and localised areas.
SOLUTION
Prevent long term corrosion by applying RB 332 to the internals of the end covers. Sealing areas showing signs of corrosion pitting were pre-machined to allow for 1mm of coating to be applied and post machined on completion.
SCOPE
High pressure washed internal & externals
Inspection of damaged/heat affected areas
Abrasive blasting to better inspect man hole cover
Pitfill application of RB 332 series in 2 coats
Thickness tested to ensure a minimum of 750µm and holiday test at 6Kv
Externals:
Application of 2 coats of RL 500PF to a nominal thickness of 300µm
Application of 2 coats of N35 Luxathane R
PRODUCTS
OUTCOME
Chemcote delivered a fast turnaround, reducing down-time for the client in the short term and delivering the end covers with expected long term corrosion protection.
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