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

Jian DENG; Xuewu CAO

doi:10.1016/S1001-8042(07)60043-8

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

MISCELLANEOUS | Updated：2021-01-29

- Hydrogen and steam distribution following a small-break LOCA in large dry containment
- Nuclear Science and Techniques Vol. 18, Issue 3, (2007)
- Affiliations：
  
  1.School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China
- Author bio：
  
  E-mail: dengjian@sjtu.edu.cn
- Funds：
- DOI：10.1016/S1001-8042(07)60043-8
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Cite this article
Jian DENG, Xuewu CAO. Hydrogen and steam distribution following a small-break LOCA in large dry containment. [J]. Nuclear Science and Techniques 18(3):181-185(2007)
DOI：

Jian DENG, Xuewu CAO. Hydrogen and steam distribution following a small-break LOCA in large dry containment. [J]. Nuclear Science and Techniques 18(3):181-185(2007) DOI： 10.1016/S1001-8042(07)60043-8.

摘要

Abstract

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.

关键词

Keywords

Severe accidentSmall-break LOCALarge dry containmentHydrogen distribution

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