Proceedings of the Korean Nuclear Society Conference (한국원자력학회:학술대회논문집)
- 1996.05b
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- Pages.598-603
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- 1996
Analysis of Locked Rotor Event Using TASS Code
- Lee, Byung-Il (Korea Atomic Energy Research Institute) ;
- Kim, Jong-Jin (Korea Atomic Energy Research Institute) ;
- Baek, Seung-Su (Korea Atomic Energy Research Institute) ;
- Um, Kil-Sub (Korea Atomic Energy Research Institute) ;
- Kim, Hee-Cheol (Korea Atomic Energy Research Institute)
- Published : 1996.05.01
Abstract
When locked rotor event. occurs, instantaneously affected loop and core flow were quickly reduced, which resulted in an increase in coolant temperature and system pressure. Analysis method of this event was that constant core inlet temperature and system pressure as well as change in core flow calculated from COAST code were statically used as an input variable to HERMITE code, because of no tools to simulate NSSS behavior and 1-D core neutronics transient coincidently. With employing TASS code revised with 1-D neutronics model, this event was analyzed in point of DNBR. By doing so, analysis procedure could be simplified and unreasonable conservatism might be removed in DNBR calculation by consideration of pressure increase.
Keywords