Preliminary analysis of hydrogen risk and hydrogen control system under severe accident
Creators
- 1. Shanghai Jiaotong Univ., Shanghai (China). School of Mechanical Engineering
Description
With an integral systems analysis computer code, hydrogen risk and the assumed hydrogen control system were analyzed for 600 MWe Pressurized Water Reactor Nuclear Power Plant. The results show that in view of 100% of zirconium clad reacted, the severe accident induced by large-break loss-of-coolant accident (LB-LOCA) with fast core's melting progression, has more hazards, possibly resulting in hydrogen deflagration, than those induced by small-break loss-of-coolant accident (SB-LOCA) and station blackout (SBO). With the effect of the assumed hydrogen control system, the average and local hydrogen concentrations in compartments of the containment are less than 10%, which means that hydrogen deflagration or detonation will not occur according with the hydrogen control and risk analysis standard in 10CFR of USA. So the assumed hydrogen control system is feasible and effective. (authors)
Additional details
Publishing Information
- Journal Title
- Atomic Energy Science and Technology
- Journal Volume
- 42
- Journal Issue
- 12
- Journal Page Range
- p. 1109-1114
- ISSN
- 1000-6931
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 40076957
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- COMBUSTION; COMPARTMENTS; COMPUTER CODES; CONCENTRATION RATIO; CONTAINMENT; CONTROL SYSTEMS; EXPLOSIONS; HYDROGEN; LOSS OF COOLANT; MELTDOWN; NUCLEAR POWER PLANTS; POWER RANGE 100-1000 MW; PWR TYPE REACTORS; RISK ASSESSMENT; STANDARDS; SYSTEMS ANALYSIS
- Descriptors DEC
- ACCIDENTS; CHEMICAL REACTIONS; DIMENSIONLESS NUMBERS; ELEMENTS; ENRICHED URANIUM REACTORS; MEGAWATT POWER RANGE; NONMETALS; NUCLEAR FACILITIES; OXIDATION; POWER PLANTS; POWER RANGE; POWER REACTORS; REACTOR ACCIDENTS; REACTORS; THERMAL POWER PLANTS; THERMAL REACTORS; THERMOCHEMICAL PROCESSES; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Notes
- 7 figs., 1 tab., 7 refs.