Diffuser Pump Repair: Water Treatment Facility, Australia
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21st January 2025
Industry: Water
Location: Australia
Application: Diffuser Pump Repair
Products: 101 Metal Repair Paste & 203 Super Flow
The Challenge
In a water treatment facility in Australia, the performance and structural integrity of a desalination pump system was compromised due to severe chloride crevice corrosion to the diffuser which was made from duplex stainless steel. The harsh operating conditions, including high chloride levels and fluctuating temperatures, accelerated the damage. A comprehensive solution was required to restore the unit’s functionality and ensure its long term durability in this highly corrosive environment.
The Solution
The damaged diffuser pump underwent an extensive cleaning and surface preparation process to eliminate contaminants and ensure optimal adhesion of the repair materials. Abrasive blasting was used to remove corrosion deposits and expose clean metal, creating the ideal substrate for repair. Once prepared, 101 Metal Repair Paste was applied to restore the heavily pitted and corroded areas. This high strength material filled cavities and rebuilt structural integrity, leaving a smooth, uniform surface for subsequent coating application.
To further protect the diffuser from the harsh operating environment, the entire unit was coated with Resimac 203 Super Flow. The first coat, in grey, provided a durable and impermeable base layer designed to withstand abrasion and chemical attack.
A second layer in blue added an additional level of corrosion protection, improving the system’s overall resilience. This dual layer coating approach ensured comprehensive coverage, safeguarding the diffuser pump from both internal and external threats.
Results & Benefits
- Restored structural integrity caused by chloride crevice corrosion
- Protective barrier to resist both chemical attack and physical wear, ensuring consistent performance over time
- Diffuser pump operational lifespan was extended significantly, contributing to a more stable and efficient desalination process
- By eliminating the risk of recurring issues, allowed for broader operational goals without concerns over unexpected equipment failures
- The customer expressed confidence in the systems long term benefits, recognising its positive impact on overall productivity and reliability
A hug thanks to Opticorr for this great application!
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