Core cooling in pressurized-water reactor during water injection

NUCLEAR ENGINEERING

Core cooling in pressurized-water reactor during water injection

TAO Jun，

LI Jingxi，

TONG Lili，

CAO Xuewu

Nuclear Science and Techniques

Vol.22, No.1

pp.60-64

Published in print 20 Feb 2011

DOI：10.13538/j.1001-8042/nst.22.60-64

55600

In this paper, the reactor core cooling and its melt progression terminating is evaluated, and the initiation criterion for reactor cavity flooding during water injection is determined. The core cooling in pressurized-water reactor of severe accident is simulated with the thermal hydraulic and severe accident code of SCDAP/RELAP5. The results show that the core melt progression is terminated by water injection, before the core debris has formed at bottom of core, and the initiation of reactor cavity flooding is indicated by the core exit temperature.

Water injectionSevere accidentSevere accident management guidelineCore damage stateCavity floodingPWR

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