Seawater Pump Protection in a Nuclear Plant: A Case Study

6th November 2024

At a nuclear power plant in Zhejiang Province, China, the casing of a recycling seawater pump exhibited extensive corrosion and pitting due to prolonged exposure to harsh marine conditions. This damage threatened the pump’s operational efficiency, highlighting the need for reliable seawater pump protection to restore functionality and prevent future degradation.

Resimac’s Seawater Pump Protection Solution

Fill corrosion holes and pitted areas with 201 Ceramic Repair Paste.
Apply two coats of 202 Ceramic Repair Fluid for abrasion and corrosion resistance.

Application Details

The pump casing was abrasive blasted to ISO 8501/4 SA 2.5 (SSPC SP10/NACE 2) standards, achieving a 75-micron angular profile to ensure optimal coating adhesion. After blasting, MEK was used to clean and degrease the surface thoroughly. 201 Ceramic Repair Paste was then applied to fill in corrosion holes and pitted areas, providing a stable foundation. Finally, two coats of 202 Ceramic Repair Fluid were applied, each at a thickness of 350 microns, to enhance resistance against abrasion and erosion, ensuring long lasting durability under demanding conditions.

Products Used

Results and Benefits

The multi-layered protective system effectively restored the pump casing’s structural integrity, providing a durable and long lasting solution suited to the nuclear plant environment. By addressing the pitted areas and applying a robust coating, this repair minimised future wear and tear, ensured sustained pump performance, and significantly reduced maintenance and downtime. The client’s satisfaction with the extended pump lifespan highlights the reliability and durability of Resimac’s solution.