Hydrogen and steam distribution following a small-break LOCA in large dry containment

被引：5
|
作者：
Deng Jian [1 ]
Cao Xuewu [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai 200240, Peoples R China
来源：
NUCLEAR SCIENCE AND TECHNIQUES | 2007年 / 18卷 / 03期
关键词：
severe accident; small-break LOCA; large dry containment; hydrogen distribution;
D O I：
10.1016/S1001-8042(07)60043-8
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The hydrogen deflagration is one of the major risk contributors to threaten the integrity of the containment in a nuclear power plant, and hydrogen control in the case of severe accidents is required by nuclear regulations. Based on the large dry containment model developed with the integral severe-accident analysis tool, a small-break loss-of-coolant-accident (LOCA) without HPI, LPI, AFW and containment sprays, leading to the core degradation and large hydrogen generation, is calculated. Hydrogen and steam distribution in containment compartments is investigated. The analysis results show that significant hydrogen deflagration risk exits in the reactor coolant pump (RCP) compartment and the cavity during the early period, if no actions are taken to mitigate the effects of hydrogen accumulation.
引用
收藏
页码：181 / 185
页数：5
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