Preliminary analysis of hydrogen distribution and risk under severe accident conditions for Qinshan NPP unit 2 containment
Creators
- 1. School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai (China)
Description
Severe accident sequences induced by large-break loss-of-coolant accident (LB-LOCA), small-break loss-of-coolant accident (SB-LOCA) and station blackout(SBO) are calculated by using an integral systems analysis computer code for Qinshan NPP Unit 2. Hydrogen concentration distributions in the containment atmosphere and their potential deflagration risk are investigated, according to the hydrogen control and risk analysis standard of US 10 CFR. The results show that the average hydrogen concentration under LB-LOCA severe accident is nearly 10%, which means large scale hydrogen deflagration might occur. In spite of the possibility of local deflagration, such large scale deflagration under SB-LOCA and SBO severe accidents maybe cease. The analysis provides a reference for hydrogen control and severe accident management of Qinshan NPP Unit 2. (authors)
Additional details
Publishing Information
- Journal Title
- Nuclear Power Engineering
- Journal Volume
- 29
- Journal Issue
- 2
- Journal Page Range
- p. 78-84
- ISSN
- 0258-0926
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 43075156
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- ACCIDENT MANAGEMENT; COMPUTER CODES; CONTAINMENT; CONTROL; DISTRIBUTION; HAZARDS; HYDROGEN; LOSS OF COOLANT; NUCLEAR POWER PLANTS; OUTAGES; QINSHAN-2-1 REACTOR; RISK ASSESSMENT; STANDARDS; SYSTEMS ANALYSIS
- Descriptors DEC
- ACCIDENTS; ELEMENTS; ENRICHED URANIUM REACTORS; MANAGEMENT; NONMETALS; NUCLEAR FACILITIES; POWER PLANTS; POWER REACTORS; PWR TYPE REACTORS; REACTOR ACCIDENTS; REACTORS; THERMAL POWER PLANTS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Notes
- 12 figs., 1 tab., 8 refs.