Goulds Safety Injection
Application: Safety Injection in Safe Shut Down Service
Pump Details: Goulds 3x6x9 3300 8-Stage
Pump Type: Multi-Stage Horizontal Split Case
A safety injection pump failed after experiencing a “dry run” event. Air got into the pump, severely damaging the impeller and other critical parts. When a spare OEM rotor was installed, performance was unacceptable upon startup. Hydro’s challenge was to correct the spare OEM impellers to meet the plant’s hydraulic performance requirements. To avoid derating, the plant needed a replacement rotor within a critical 2-week time frame.After the failed rotor was decontaminated, Hydro reverse engineered the hydraulic configuration to obtain the original impeller geometry and underfiling data. The underfiling data was validated using our in-house engineering software and then used in conjunction with computational fluid dynamics software to confirm that Hydro’s proposed modifications to the spare OEM impellers would in fact meet the required performance criteria.
With a 2-week turnaround, Hydro delivered a rebuilt rotor with engineered upgrades that would increase pump performance and improve reliability. Upon start-up, the pump performed at 1288lbs. pressure – 8lbs. better than the original rotor and 88lbs. above the minimum allowance!
Nuclear Certifications held by HydroAire’s Madison Facility