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RESEARCH PAPERS

Decoupling Criteria for Multi-Connected Equipment

[+] Author and Article Information
G. R. Reddy, H. S. Kushwaha, S. C. Mahajan

Reactor Engineering Division, Bhabha Atomic Research Center, Bombay-400085, India

K. Suzuki

Department of Mechanical Engineering, Tokyo Metropolitan University, 1-1, Minami Osawa, Hachioji-Shi, Tokyo 192-03, Japan

J. Pressure Vessel Technol 120(1), 93-98 (Feb 01, 1998) (6 pages) doi:10.1115/1.2841892 History: Received December 12, 1996; Revised September 15, 1997; Online February 11, 2008

Abstract

Generally, for the seismic analysis of nuclear power plant structures, requirement of coupling equipment is checked by applying USNRC decoupling criteria. This criteria is developed for the equipment connected to the structure at one location. In this paper, limitations of this criteria and modifications required for application to real life structures such as pressurized heavy water reactor building are discussed. In addition, the authors endeavor to present a decoupling model for multi-connected structure-equipment. The applicability of the model is demonstrated with pressurized heavy water reactor building internal structure and steam generator.

Copyright © 1998 by The American Society of Mechanical Engineers
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