An industrial operator handling brine and water services required urgent refurbishment of a critical horizontal split case (HSC) pump to restore performance and prevent further operational risk.

The Challenge

During operation, the pump experienced a bearing failure which caused the impeller to shift within the casing.

This resulted in significant internal damage to the phosphor bronze casing, including:

• Severe wear at the impeller landing areas
• Compromised casing integrity
• Increased risk of reduced efficiency and potential failure
• Given the aggressive nature of the brine environment, a robust and long-term repair solution was essential.

The Solution

Corroserve delivered a comprehensive repair and protection solution, combining precision engineering with advanced coating technology.

The scope of work included:

• Installation of phosphor bronze rings in both upper and lower casing halves
• Assembly and precision machining to suit new wear rings, ensuring correct tolerances and clearances
• Rebate machining of upper and lower casing sealing faces
• Abrasive blasting of all internal surfaces to achieve the required cleanliness and surface profile
• Application of multi-directional GRP matting, wetted with L600 laminating resin, to rebuild and reinforce damaged areas
• Full internal coating using Corroglass 600 series, applied to a minimum dry film thickness (DFT) of 1250 microns

The Results

• Fully restored casing integrity and functionality
• Improved resistance to corrosion and chemical attack
• Enhanced pump efficiency through correct clearances and surface finish
• Extended service life of the asset in a highly aggressive environment

Key Benefits

• Cost-effective alternative to full pump replacement
• Engineered repair tailored to operational conditions
• Long-term protection using high-performance coating systems
• Reduced risk of future failure and unplanned downtime

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