Emergency Response Guidance for Reactor Vessel Pressurized Thermal Shock Events

[+] Author and Article Information
W. T. Kaiser, B. S. Monty

Westinghouse Electric Corporation, Nuclear Energy Systems, Pittsburgh, Pa. 15230

J. Pressure Vessel Technol 108(3), 346-351 (Aug 01, 1986) (6 pages) doi:10.1115/1.3264796 History: Received July 31, 1984; Revised May 09, 1985; Online November 05, 2009


The operational concern of pressurized thermal shock (PTS) can be minimized by proper operator guidance. This paper presents a method for calculating a pressure temperature limit curve for reactor vessel integrity which can be used to identify an ongoing potential PTS event. This method has been developed for use and is applicable to all pressurized water reactors. The curve is used in emergency operating procedures developed to prioritize various plant safety concerns including PTS and core cooling to ensure proper operator action during accident conditions. This paper emphasizes the development of the pressure-temperature limit and how it is used within the emergency operating procedures.

Copyright © 1986 by ASME
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