An analysis of containment responses during a station blackout accident
| Autor: | Thi Huong Vo, JinHo Song |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Nuclear and High Energy Physics
020209 energy Nuclear engineering Containment building Evaporation 02 engineering and technology Corium law.invention Nuclear Energy and Engineering Containment MELCOR law Boiling Nuclear power plant 0202 electrical engineering electronic engineering information engineering Environmental science Reactor pressure vessel |
| Zdroj: | Journal of Nuclear Science and Technology. 54:1074-1084 |
| ISSN: | 1881-1248 0022-3131 |
| Popis: | An analysis of the responses of the containment during a station blackout accident is performed for the APR1400 nuclear power plant using MELCOR 2.1. The analysis results show that the containment failure occurs at about 84.14 h. Prior to the failure of the reactor vessel, the containment pressure increases slowly. Then, a rapid increase of the containment pressure occurs when a large amount of hot molten corium is discharged from the reactor pressure vessel to the cavity. The molten corium concrete interaction (MCCI) is arrested when water is flooded over a molten corium in the cavity. The boiling of water in the cavity causes a fast increase in the containment pressure. During the early phase of the accident, a large amount of steam is condensed inside the containment due to the presence of the heat structures. This results in a mitigation of a containment pressure increase. During the late phase, the containment pressure increases gradually due to the addition of steam and gases from an MCCI an... |
| Databáze: | OpenAIRE |
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