Case Studies
Extracting Mining Dewatering Pump
Challenge
Goals
- Restore performance efficiency
- Reduce spare parts costs
- Increase MBTR
Root Cause
Drainage pump volute and impellor eroded
and corroded by pumping sand, water, and
acidic run off.
Submersible pumps subjected to adverse conditions.
Solution
Preparation
- Abrasive blast to Sa 2.5 with 3 mil (75 μm)
angular profile
Application
- Apply ARC 858 to replace metal loss and
repair large damage - Topcoat with ARC 855, the ceramic
reinforcement to provide erosion/abrasion
resistance and enhanced flow efficiency
Corroded impeller from submersible pump.
Results
Subsequent Inspection
Client reports that ARC coated impellers last
twice as long as new impellers.
Follow-up Actions
Client ordered 170 impellers to be coated with
ARC 858 and ARC 855.
Client Estimated Savings
Total savings of per year: $705,000 ($=USD)
Coated impeller awaiting installation in submersible pump.
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