Westinghouse Electric Co. and ClydeUnion Pumps have signed a teaming agreement to market jointly the ClydeUnion Pumps Turbine Water Lubricated (CUP-TWL) pump for new plant applications and operating nuclear power plants worldwide.
The CUP-TWL is employed as a turbine-driven auxiliary feed water pump in pressurized water reactors (PWRs), and in boiling water reactors (BWRs) it is used as the reactor core isolation cooling pump. The CUP-TWL can pump process fluids above 100 deg C, does not use AC or DC power, and does not utilize flammable lubrication.
The agreement with ClydeUnion Pumps allows Westinghouse’s PWR and BWR customers to have more safety pump options, according to Doug Holderbaum, director of Westinghouse’s Post-Fukushima Safety Products and Services. “The CUP-TWL extended [station blackout] coping package is part of Westinghouse’s larger effort to provide its global customers with products and services that enhance safety,” Holderbaum said.
According to Westinghouse, the most safety-significant systems in a complete electrical power loss at a nuclear power station, known as a station blackout (SBO) event, are the reactor core isolation cooling system for the BWRs and the auxiliary feedwater (AFW) system for the PWRs. The CUP-TWL enables continued AFW system operation without electrical power.
The CUP-TWL has “undergone full nuclear quality assurance,” since it is considered a safety-related pump for both PWRs and BWRs, according to Westinghouse. It has the American Society of Mechanical Engineers’ “N” stamp. The company says more than 400 CUP-TWLs are in use in nuclear and non-nuclear applications worldwide (it was originally developed for maritime applications).
Westinghouse is part of Toshiba Corp.