Assumed Process of Piping Failure in Nuclear Power Plants Under Destructive Earthquake Conditions

[+] Author and Article Information
H. Shibata

Institute of Industrial Science, University of Tokyo, Minato, Tokyo, Japan

J. Pressure Vessel Technol 113(2), 268-272 (May 01, 1991) (5 pages) doi:10.1115/1.2928754 History: Received April 08, 1991; Online June 17, 2008


This paper deals with an assumed process of piping failure in nuclear power plants which may cause a catastrophic accident during a destructive earthquake condition. The type of failure discussed is the so-called double-ended guillotine break, DEGB. As a safety problem, we are going to eliminate this type of failure by LBB, and we have assumed that this would then not occur by an earthquake. The author tries to clarify the possibility of failure during earthquakes. He reviews his related papers since 1973, and discusses zipping failure of snubbers and supporting devices. He shows a procedure to simulate the zipping failure of a piping system supported by snubbers.

Copyright © 1991 by The American Society of Mechanical Engineers
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