Proceedings of the Korean Nuclear Society Conference (한국원자력학회:학술대회논문집)
- 1996.05b
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- Pages.417-422
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- 1996
Best Estimate Small Break LOCA Analysis for KNGR SIS Optimization
- Song, Jin-Ho (Korea Atomic Energy Research Institute) ;
- Lim, Hong-Sik (Korea Atomic Energy Research Institute) ;
- Bae, Kyoo-Hwan (Korea Atomic Energy Research Institute) ;
- Lee, Joon (Korea Atomic Energy Research Institute)
- Published : 1996.05.01
Abstract
The KNGR has an advanced ECCS design feature which employs four mechanically-separated SI trains where each train consisting of one HPSI pump and one SIT injects ECC water directly into the reactor vessel downcomer annulus. To demonstrate that the KNGR ECCS design features meet the EPRI ALWR requirements of no core uncovery for a break of up to 6 inch diameter, small break LOCA cases with various break sizes were analyzed using a best-estimate analytical procedure. Two kinds of break locations are considered: cold leg and DVI line breaks. It was observed that the KNGR ECC design can tolerate a cold leg break of up to 10 inches with no core uncovery. However. since DVI line break with 6 inch diameter undergoes slight core uncovery. further investigation is required for KNGR SIS optimization.
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