Class 1E Medium-Voltage Motors

Westinghouse Pump & Motor Services supplies interchangeable medium-voltage motors in the World Series, Lifeline D, Lifeline A, and Type CSP designs for safety-related Class 1E applications. This enables utilities to maintain original Class 1E qualification when replacing Westinghouse medium-voltage motors.

These medium-voltage motors (200-4500 HP) are built to Westinghouse original design specifications with horizontal or vertical mounting and are available in a range of NEMA enclosures. A key feature of these motors is that they utilize the Westinghouse environmentally qualified Class B or F form-wound
Thermalastic® Epoxy insulation system (579K).

The Lifeline D, Lifeline A, and Type CSP duplicate motor designs are certified to be electrically and mechanically interchangeable in form, fit, function, and seismic and environmental qualification with the original motors. This is applicable to all motors that were originally supplied with qualification. The World Series updated replacement design motor is also certified to be electrically and mechanically interchangeable in fit and function to the original motor, but may vary in size and weight. The World Series motor is environmentally qualified consistent with the original motor, as applicable. The seismic qualification can be furnished upon customer request.

Westinghouse supplies these medium-voltage motors through an exclusive arrangement with the TECO-Westinghouse Motor Company (formerly Westinghouse Electric Large Motor Division (LMD), located in Buffalo, NY).

Description

Westinghouse medium-voltage motors are designed for high efficiency. They utilize copper/copper-alloy rotors, induction brazing, swaging, and through-bolt construction. All of the medium-voltage motors are squirrel-cage induction-type motors and feature the Westinghouse environmentally qualified and reliable Class B or F form-wound "Thermalastic Epoxy?" insulation system.

Performance Options

Interchangeability

Utilities can maintain the original qualification by replacing existing motors with those supplied by Pump & Motor Services, which will certify to the electrical and mechanical interchangeability of replacement motors. When replacing Westinghouse motors, certification is based upon review of the design records for the original motors. For replacement of non-Westinghouse motors, certification is based upon review of information supplied by the customer. Although minor changes in motor weight may occur, Pump & Motor Services will certify that environmental and seismic qualification equals or exceeds that of the original motor.

Equipment Qualification

Westinghouse supplies Class 1E medium-voltage motors for both harsh and mild environment applications. Westinghouse Class 1E medium-voltage motors, components, and parts are furnished in accordance with the Westinghouse Quality Management System (QMS). This document meets the applicable requirements of the NRC for quality control and quality assurance, including the requirements set forth in 10CFR50, Appendix B. Westinghouse RRS also complies with 10CFR21, reporting requirements and holds the ISO 9001 certification.

For safety-related Class 1E applications, the medium-voltage motors are further qualified to accepted environmental and seismic standards.

Seismic Qualification

Seismic qualification is accomplished using a standard static or a static coefficient analysis. If Westinghouse performed the original analysis, the seismic requirements originally supplied to Westinghouse will be met or exceeded, and the original report remains applicable if a duplicate motor is purchased. For updated replacement motor designs, for those motors that originally did not have a seismic analysis performed or for those that have new seismic requirements, seismic qualification can be provided as an option.

Environmental Qualification

The medium-voltage motors supplied by Pump & Motor Services are qualified to the following typical environmental parameters.

Medium-voltage motors can be qualified for out-of-containment, high energy line break environments on a case-by-case basis.

Lifeline A and Type CSP motors for in-containment applications (reactor containment fan cooler and safety injection recirculation pump) are qualified to IEEE Standard 323-1971 and IEEE Standard 344-1975.

Ordering and Delivery

Typical manufacturing lead time for motors not in inventory is approximately 52 weeks. In critical-need situations, expedited delivery may be possible at an additional cost.

Prior to motor shipment, Pump & Motor Services will transmit standard performance data, outline drawing, storage instructions, and an instruction manual for each motor design. At the time of shipment, a standard test report, Certification of Conformance, Certificate of Qualification, quality release, and a spare parts list will be provided.