Hydrogen and steam distribution following a small-break LOCA in large dry containment |
| |
| Authors: | Jian DENG Xuewu CAO |
| |
| Affiliation: | aSchool of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
| |
| 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. |
| |
| Keywords: | Severe accident Small-break LOCA Large dry containment Hydrogen distribution containment large LOCA distribution steam actions taken effects accumulation compartment cavity during early period results show significant reactor coolant pump |
| 本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录！ |
|
