Accident assessment for Chernobyl unit 3 from potential collapse of adjacent structures
- Pacific Northwest National Lab., Richland, WA (United States)
- Ministry for Environmental Protection and Nuclear Safety, Kiev (Ukraine)
This study assessed the likelihood of a serious, explosive accident to be caused at Chernobyl nuclear power plant (NPP) unit 3 by a collapse that might occur in the nearby shelter (Ukrytie) constructed over the destroyed unit 4 or in the intermediate building block V separating the two units. In order to determine quickly and economically the significance of the hazard to unit 3, the analysis was based on existing information and expert judgment. No new structural analysis calculations were performed. Pacific Northwest National Laboratory (PNNL) managed and directed the methodology of the study. The expert judgment assessments of likely scenarios and event probabilities were carried out by Ukrainian experts. Most of the project team was drawn from the State Scientific and Technical Center of the Ministry of Environmental Protection of Ukraine with support from personnel of the Chernobyl NPP, the Interbranch Agency of the Ukrainian Scientific and Technical Center, and the Ukrainian Nuclear Regulatory Administration. It was truly an international project; the PNNL project manager resided in Ukraine during the study and met regularly with the Ukrainian team to review progress and to discuss approach and methodology. Peer reviews were obtained from Ukrainian, US, and Canadian risk analysis and RBMK systems and operations experts. The full report of the study and its results was published by the Ukrainian team.
- OSTI ID:
- 644244
- Report Number(s):
- CONF-980606--
- Journal Information:
- Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 78; ISSN 0003-018X; ISSN TANSAO
- Country of Publication:
- United States
- Language:
- English
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