Decoupling criteria for multi-connected equipment
- Bhabha Atomic Research Center, Bombay (India). Reactor Engineering Div.
- Tokyo Metropolitan Univ., Hachioji (Japan). Mechanical Engineering Dept.
Nuclear Power Plant structures generally support equipment, piping systems, computing/controlling systems etc. These equipment and structures may interact with each other during an earthquake. This results in variation in the uncoupled response wherein uncoupled response is calculated for equipment and structure separately. The best way of accounting for interaction effects of structure and equipment is by coupling together and analyzing for a given earthquake load. However, it may not be practicable to couple all the equipment to the structure because of three main reasons. These are: firstly, at the initial design stage of power plant structure all the details of equipment may not be available, secondly, coupling all the equipment may lead to numerical problems in computation because of large difference in stiffness and thirdly, the cost of computation may become very high and time consuming because by coupling all the equipment, size (e.g. number of numerical equations) of the problem becomes very large. In this paper the authors endeavor to present a decoupling model for multi-connected structure-equipment. The applicability of the model will be demonstrated with practical problems like reactor building and equipment. Here onwards equipment is referred as Secondary System (S.S) and structure of Primary System (P.S).
- OSTI ID:
- 404346
- Report Number(s):
- CONF-960706-; ISBN 0-7918-1787-3; TRN: 97:000463
- Resource Relation:
- Conference: American Society of Mechanical Engineers (ASME) pressure vessels and piping conference, Montreal (Canada), 21-26 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of Seismic engineering -- 1996. PVP-volume 340; Saleem, M.A. [ed.] [AECL, Mississauga, Ontario (Canada)]; Aggarwal, M.C. [ed.]; PB: 372 p.
- Country of Publication:
- United States
- Language:
- English
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