Seawater Filtration System Repair: A Case Study

11th October 2024

A container ship’s seawater filtration system suffered from extensive internal corrosion, threatening the efficiency of its seawater intake. The filters required thorough restoration to eliminate corrosion and ensure long term protection. The customer sought a robust solution to protect the seawater filtration system and minimise future maintenance.

Resimac’s Seawater Filtration System Repair Solution

The internal surfaces were thoroughly cleaned using high pressure fresh water, effectively removing salt contamination and providing a clean base for further treatment.
The filter surfaces were then abraded to SSPC SP3 (ISO 8504-1 ST3) standards to prepare for coating.
Two coats of 202 Ceramic Repair Fluid were applied to protect the filters and provide long term resistance against abrasion, corrosion, and operational wear.

Application Details

The internal surfaces of the filters were abraded using handheld mechanical grinding tools to achieve the necessary surface profile. Afterward, the surfaces were cleaned with solvent to remove any remaining debris. Resimac’s 202 Ceramic Repair Fluid was applied in two coats using a brush, with each coat providing a nominal dry film thickness of 600 microns. This robust coating ensured the seawater filters would withstand the harsh marine environment and prolonged exposure to seawater.

Products Used

202 Ceramic Repair Fluid

Results and Benefits

The restoration process provided long lasting protection, safeguarding the seawater filtration system from corrosion and abrasion. By restoring the system’s integrity, the vessel’s performance improved, and maintenance requirements were reduced. This solution extended the lifespan of the seawater filtration system, offering a cost effective alternative to replacement.