In-vessel retention of corium at the Loviisa plant
Autor: | O. Kymäläinen, T.G. Theofanous, H. Tuomisto |
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Rok vydání: | 1997 |
Předmět: |
Nuclear and High Energy Physics
Engineering Waste management business.industry Mechanical Engineering Nuclear engineering Corium Nuclear Energy and Engineering Accident management Containment Head (vessel) General Materials Science Safety Risk Reliability and Quality business Waste Management and Disposal Reactor pressure vessel |
Zdroj: | Nuclear Engineering and Design. 169:109-130 |
ISSN: | 0029-5493 |
DOI: | 10.1016/s0029-5493(96)01280-0 |
Popis: | In-vessel retention of corium has been approved to be part of the severe accident management strategy for IVO's Loviisa plant. The approach selected takes advantage of the unique features of the plant such as a low power density, a reactor pressure vessel (RPV) without penetrations at the bottom, and ice-condenser containment which ensures a flooded cavity in all risk significant sequences. The thermal analyses, which are supported by an experimental program, demonstrate that, in Loviisa, the molten corium on the lower head of the RPV is externally coolable with wide margins. This paper summarizes the approach, the thermal analyses and the plant modifications being implemented. |
Databáze: | OpenAIRE |
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