한국원자력학회:학술대회논문집 (Proceedings of the Korean Nuclear Society Conference)
- 한국원자력학회 1997년도 추계학술발표회논문집(1)
- /
- Pages.645-650
- /
- 1997
Core Size Effects on Safety Performances of LMRs
- Na, Byung-Chan (Korea Atomic Energy Research Institute) ;
- Dohee Hahn (Korea Atomic Energy Research Institute)
- 발행 : 1997.10.01
초록
An oxide fuel small size core (1200 MWt) was analyzed in comparison with a large size core (3600 MWt) in order to evaluate the size effects on transient safety performances of liquid-metal reactors (LMRs). in the first part of the study, main static safety parameters (i.e., Doppler coefficient, sodium void effect, etc.) of the two cores were characterized, and the second part of the study was focused on the dynamic behavior of the cores in two representative transient events: the unprotected loss-of-flow(ULOF) and the unprotected transient overpower (UTOP). Margins to fuel molting and sodium boiling have been evaluated for these representative transients. Results show that the small core has a generally better or equivalent level of safety performances during these events.
키워드