CPR Coating for Low Pressure Service Water Pump Impeller
CUSTOMER: A nuclear power plant in Ontario
APPLICATION DATE: 2002
PROBLEM: Extensive cavitation on LPSW pump impeller
SUBSTRATE: Steel
APPLICATION METHOD: After surface preparation was applied to restore impeller vanes to original profile. Final topcoat consisted of two coats of CPR Material.
CPR FACTS: Customer chose to repair deepest areas of cavitation via welding. Note: CPR today offers a more highly cavitation resistant coating.
PHOTOGRAPHS
![](https://www.polymericcoatings.com/wp-content/uploads/2018/10/77986-1.png)
Overall view of impeller after surface preparation.
![](https://www.polymericcoatings.com/wp-content/uploads/2018/10/77987-1.png)
Close up of impeller vanes showing welding and remaining cavitation pits in blades.
![](https://www.polymericcoatings.com/wp-content/uploads/2018/10/77988-1.png)
CPR Material applied and smoothed over blades.
Completed application after two coats of CPR Material. Impeller was dynamically balanced prior to return to service.