Development of a Korean roadmap for technical issue resolution for fission product behavior during severe accidents

In order to develop a domestic research roadmap for severe accidents, a special committee was established by the Korean Nuclear Society. One of the subcommittees discussed the characteristics and the relevant technical issues in the stages of fission product release and physical forms of radionuclid...

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Published inNuclear engineering and technology Vol. 49; no. 8; pp. 1575 - 1588
Main Authors Kim, Han-Chul, Ha, Kwang Soon, Kim, Sung Joong, Seo, Miro, Kang, Sang-Ho, Lee, Doo Yong, Song, Yong-Mann, Lee, Jongseong, Im, Hee-Jung, Cho, Chang-Sok, Yeon, Jei-Won, Kim, Sung Il, Cho, Song-Won, Song, Jinho, Ryu, Yong-Ho
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2017
Elsevier
Subjects
Countermeasure System
Fission Technical Issue
Product Release
Research Need
Roadmap
Severe Accident Phenomena
Product Release
Fission Technical Issue
Roadmap
Research Need
Severe Accident Phenomena
Countermeasure System
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Summary:In order to develop a domestic research roadmap for severe accidents, a special committee was established by the Korean Nuclear Society. One of the subcommittees discussed the characteristics and the relevant technical issues in the stages of fission product release and physical forms of radionuclide release and transport. The group members developed a tree to identify fission product release phenomena by tracing failures of individual defense-in-depth barriers and added possible countermeasures against failure. For each elemental issue, they searched for technical problems by examining the phenomena, accident management actions, and regulatory aspects relevant to the mitigation features for containment, including mitigation strategies against containment bypass accidents. Regulatory concerns, including the source term and the acceptance criteria for radionuclide release, were also considered. They identified further research needs regarding important technical issues based on the degree of the current knowledge level in Korea and in foreign countries, looking at the significance and urgency of issues and the expected research period required to reach an advanced level of knowledge. As a result, the group identified the 12 most important and urgent issues, most of which were expected to require mid-term and long-term research periods.
ISSN:1738-5733
DOI:10.1016/j.net.2017.08.018