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Westinghouse Sigma™ RCP/SHIELD® Seals

The Westinghouse Sigma™ Reactor Coolant Pump Seal provides reliable performance and cost savings to ensure safe and long-term plant operation. This seal has been rigorously developed and tested to provide up to a 12-year life in order to reduce your seal maintenance cost, decrease refueling outage dose, eliminate seal installation issues, and more.

Combining the Westinghouse Sigma™ RCP and SHIELD® seals brings additional benefits of integrated passive safety and high reliability.

The number one Sigma™ seal completed long–term qualification testing in April 2018 and will be first installed during the Fall 2018 outage season. The Sigma™ innovation program continues development of the numbers two and three seal redesigns with prototype ongoing testing. The number two Sigma™ seal is planned for completion in mid-2019, and the number three Sigma™ seal is on track for completion in 2020.

SHIELD is a registered trademark of Westinghouse Electric Company, LLC in the United State and may be registered in other countries throughout the world. All rights reserved. Unauthorized use is strictly prohibited.