한국원자력학회:학술대회논문집 (Proceedings of the Korean Nuclear Society Conference)
- 한국원자력학회 1995년도 추계학술발표회논문집(2)
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- Pages.544-549
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- 1995
An Analysis of a Post-Trip Return-to-Power Steam Line break Events
- Baek, Seung-Su (Korea Atomic Energy Research Institute) ;
- Lee, Cheol-Sin (Korea Atomic Energy Research Institute) ;
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Song, Jin-Ho
(Korea Atomic Energy Research Institute) ;
- Lee, Sang-Yong (Korea Atomic Energy Research Institute)
- 발행 : 1995.05.01
초록
An analysis for Steam Line Break (SLB) events which result in a return-to-power conditions after reactor trip was performed for a postulated Yonggwang Nuclear Power Plant Unit 3 cycle 8. Analysis methodology for post-trip return-to-power SLB is quite different from that of a no return-to-power SLB and is more complicated. Therefore, it is necessary to develop an methodology to analyze the response of the NSSS parameter and the fuel performance for the post-trip return-to-power SLB events. In this analysis, the cases with and without offsite power were simulated by crediting 3-D reactivity feedback effect due to local heatup around stuck CEA and compared with the cases without 3-D reactivity feedback with respect to fuel performance, departure from nucleate boiling ratio (DNBR) and linear heat generation rate (LHGR).
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