Westinghouse Electric Corporation

Nicholas W Kish

Edward J Rusnica

Stephen J Sarver

Martin J Zegar

Howard S Jenkins

A pressure control system for a pressurized water nuclear reactor and method for quickly closing the valves associated with the pressurizer thereof has a temperature detection device on the loop seal of each valve and a valve responsive thereto to change water to the loop seal upon a temperature rise therein and stop the flow of water to the loop seal upon a temperature drop therein. The rapid formation of water seals in the loop seals for the valves protects the valve seats from wear and degradation and prolongs the life thereof.

Pressurized water nuclear reactor pressure control system and method of

A modularly constructable support arrangement is provided for pressurizer safety and relief valves in a nuclear power plant. A common header is supported by four sets of columnar legs which are secured to pressurizer vessel side wall lugs. The safety and relief valves are securely disposed and connected through short pipe runs to discharge steam into the header.

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Munhall, PA, United States of America

Nicholas W Kish