Overview and Outcomes of the OECD/NEA Benchmark Study of the Accident at the Fukushima Daiichi NPS (BSAF) Phase II—Results of Severe Accident Analyses for Unit 1

Luis Enrique Herranz, Marco Pellegrini, Terttaliisa Lind, Martin Sonnenkalb, L. Godin-Jacqmin, Claudia López, K. Dolganov, F. Cousin, H. Tamaki, T. W. Kim, H. Hoshi, Nathan Andrews, Tuomo Sevon

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    2 Citations (Scopus)

    Abstract

    Phase II of the OECD/NEA Project “Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF)” was established in mid-2015. The objectives have been similar to phase 1 of the project but with an extended analysis period of 3 weeks from the occurrence of the earthquake, a major focus on fission product (FP) behaviour and releases to the environment and the comparison to various data including radiological data and results of backwards calculations of the source term. Nine organizations of six countries (CIEMAT;, IAE, JAEA and NRA Japan; CEA, IRSN France; IBRAE Russia, KAERI Korea; NRC/DOE/SNL U.S.A.; VTT Finland) submitted results of their calculated severe accident scenarios for Unit 1 at the Fukushima Daiichi site using different severe accident codes (ASTEC, MAAP, MELCOR, SAMPSON, THALES-KICHE). The present paper describes the findings of the comparison of the participants results for Unit 1 against each other and against plant data, the evaluation of the accident progression and the final status inside the reactors. Special focus is on RPV status, melt release and FP behaviour and release. Unit specific aspects will be highlighted and points of consensus as well as remaining uncertainties and data needs will be summarised. The results for Units 2 and 3, and an overall summary are presented in separated papers.
    Original languageEnglish
    Title of host publicationProceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18
    PublisherAmerican Nuclear Society ANS
    Pages1107-1118
    Number of pages12
    ISBN (Electronic)978-0-89448-767-5
    Publication statusPublished - 2019
    MoE publication typeA4 Article in a conference publication
    Event18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019 - Portland, United States
    Duration: 18 Aug 201923 Aug 2019

    Conference

    Conference18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019
    Abbreviated titleNURETH-18
    CountryUnited States
    CityPortland
    Period18/08/1923/08/19

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    OECD
    accident
    nuclear power plant
    melt
    earthquake
    comparison
    project
    product

    Cite this

    Herranz, L. E., Pellegrini, M., Lind, T., Sonnenkalb, M., Godin-Jacqmin, L., López, C., ... Sevon, T. (2019). Overview and Outcomes of the OECD/NEA Benchmark Study of the Accident at the Fukushima Daiichi NPS (BSAF) Phase II—Results of Severe Accident Analyses for Unit 1. In Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18 (pp. 1107-1118). [29243] American Nuclear Society ANS.
    Herranz, Luis Enrique ; Pellegrini, Marco ; Lind, Terttaliisa ; Sonnenkalb, Martin ; Godin-Jacqmin, L. ; López, Claudia ; Dolganov, K. ; Cousin, F. ; Tamaki, H. ; Kim, T. W. ; Hoshi, H. ; Andrews, Nathan ; Sevon, Tuomo. / Overview and Outcomes of the OECD/NEA Benchmark Study of the Accident at the Fukushima Daiichi NPS (BSAF) Phase II—Results of Severe Accident Analyses for Unit 1. Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18. American Nuclear Society ANS, 2019. pp. 1107-1118
    @inproceedings{d933bf784c3d4bb5aba2214c2609d2ba,
    title = "Overview and Outcomes of the OECD/NEA Benchmark Study of the Accident at the Fukushima Daiichi NPS (BSAF) Phase II—Results of Severe Accident Analyses for Unit 1",
    abstract = "Phase II of the OECD/NEA Project “Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF)” was established in mid-2015. The objectives have been similar to phase 1 of the project but with an extended analysis period of 3 weeks from the occurrence of the earthquake, a major focus on fission product (FP) behaviour and releases to the environment and the comparison to various data including radiological data and results of backwards calculations of the source term. Nine organizations of six countries (CIEMAT;, IAE, JAEA and NRA Japan; CEA, IRSN France; IBRAE Russia, KAERI Korea; NRC/DOE/SNL U.S.A.; VTT Finland) submitted results of their calculated severe accident scenarios for Unit 1 at the Fukushima Daiichi site using different severe accident codes (ASTEC, MAAP, MELCOR, SAMPSON, THALES-KICHE). The present paper describes the findings of the comparison of the participants results for Unit 1 against each other and against plant data, the evaluation of the accident progression and the final status inside the reactors. Special focus is on RPV status, melt release and FP behaviour and release. Unit specific aspects will be highlighted and points of consensus as well as remaining uncertainties and data needs will be summarised. The results for Units 2 and 3, and an overall summary are presented in separated papers.",
    author = "Herranz, {Luis Enrique} and Marco Pellegrini and Terttaliisa Lind and Martin Sonnenkalb and L. Godin-Jacqmin and Claudia L{\'o}pez and K. Dolganov and F. Cousin and H. Tamaki and Kim, {T. W.} and H. Hoshi and Nathan Andrews and Tuomo Sevon",
    year = "2019",
    language = "English",
    pages = "1107--1118",
    booktitle = "Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18",
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    Herranz, LE, Pellegrini, M, Lind, T, Sonnenkalb, M, Godin-Jacqmin, L, López, C, Dolganov, K, Cousin, F, Tamaki, H, Kim, TW, Hoshi, H, Andrews, N & Sevon, T 2019, Overview and Outcomes of the OECD/NEA Benchmark Study of the Accident at the Fukushima Daiichi NPS (BSAF) Phase II—Results of Severe Accident Analyses for Unit 1. in Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18., 29243, American Nuclear Society ANS, pp. 1107-1118, 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019, Portland, United States, 18/08/19.

    Overview and Outcomes of the OECD/NEA Benchmark Study of the Accident at the Fukushima Daiichi NPS (BSAF) Phase II—Results of Severe Accident Analyses for Unit 1. / Herranz, Luis Enrique; Pellegrini, Marco; Lind, Terttaliisa; Sonnenkalb, Martin; Godin-Jacqmin, L.; López, Claudia; Dolganov, K.; Cousin, F.; Tamaki, H.; Kim, T. W.; Hoshi, H.; Andrews, Nathan; Sevon, Tuomo.

    Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18. American Nuclear Society ANS, 2019. p. 1107-1118 29243.

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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    AU - Herranz, Luis Enrique

    AU - Pellegrini, Marco

    AU - Lind, Terttaliisa

    AU - Sonnenkalb, Martin

    AU - Godin-Jacqmin, L.

    AU - López, Claudia

    AU - Dolganov, K.

    AU - Cousin, F.

    AU - Tamaki, H.

    AU - Kim, T. W.

    AU - Hoshi, H.

    AU - Andrews, Nathan

    AU - Sevon, Tuomo

    PY - 2019

    Y1 - 2019

    N2 - Phase II of the OECD/NEA Project “Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF)” was established in mid-2015. The objectives have been similar to phase 1 of the project but with an extended analysis period of 3 weeks from the occurrence of the earthquake, a major focus on fission product (FP) behaviour and releases to the environment and the comparison to various data including radiological data and results of backwards calculations of the source term. Nine organizations of six countries (CIEMAT;, IAE, JAEA and NRA Japan; CEA, IRSN France; IBRAE Russia, KAERI Korea; NRC/DOE/SNL U.S.A.; VTT Finland) submitted results of their calculated severe accident scenarios for Unit 1 at the Fukushima Daiichi site using different severe accident codes (ASTEC, MAAP, MELCOR, SAMPSON, THALES-KICHE). The present paper describes the findings of the comparison of the participants results for Unit 1 against each other and against plant data, the evaluation of the accident progression and the final status inside the reactors. Special focus is on RPV status, melt release and FP behaviour and release. Unit specific aspects will be highlighted and points of consensus as well as remaining uncertainties and data needs will be summarised. The results for Units 2 and 3, and an overall summary are presented in separated papers.

    AB - Phase II of the OECD/NEA Project “Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF)” was established in mid-2015. The objectives have been similar to phase 1 of the project but with an extended analysis period of 3 weeks from the occurrence of the earthquake, a major focus on fission product (FP) behaviour and releases to the environment and the comparison to various data including radiological data and results of backwards calculations of the source term. Nine organizations of six countries (CIEMAT;, IAE, JAEA and NRA Japan; CEA, IRSN France; IBRAE Russia, KAERI Korea; NRC/DOE/SNL U.S.A.; VTT Finland) submitted results of their calculated severe accident scenarios for Unit 1 at the Fukushima Daiichi site using different severe accident codes (ASTEC, MAAP, MELCOR, SAMPSON, THALES-KICHE). The present paper describes the findings of the comparison of the participants results for Unit 1 against each other and against plant data, the evaluation of the accident progression and the final status inside the reactors. Special focus is on RPV status, melt release and FP behaviour and release. Unit specific aspects will be highlighted and points of consensus as well as remaining uncertainties and data needs will be summarised. The results for Units 2 and 3, and an overall summary are presented in separated papers.

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    M3 - Conference article in proceedings

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    Herranz LE, Pellegrini M, Lind T, Sonnenkalb M, Godin-Jacqmin L, López C et al. Overview and Outcomes of the OECD/NEA Benchmark Study of the Accident at the Fukushima Daiichi NPS (BSAF) Phase II—Results of Severe Accident Analyses for Unit 1. In Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18. American Nuclear Society ANS. 2019. p. 1107-1118. 29243