Overview and outcomes of the OECD/NEA benchmark study of the accident at the Fukushima Daiichi NPS (BSAF), phase 2 – Results of severe accident analyses for Unit 2

M. Sonnenkalb; M. Pellegrini; L. E. Herranz; T. Lind; A. C. Morreale; K. Kanda; H. Tamaki; S. I. Kim; F. Cousin; L. Fernandez Moguel; N. Andrews; Tuomo Sevon

doi:10.1016/j.nucengdes.2020.110840

Overview and outcomes of the OECD/NEA benchmark study of the accident at the Fukushima Daiichi NPS (BSAF), phase 2 – Results of severe accident analyses for Unit 2

M. Sonnenkalb^*
, M. Pellegrini
, L. E. Herranz
, T. Lind
, A. C. Morreale
, K. Kanda
, H. Tamaki
, S. I. Kim
, F. Cousin
, L. Fernandez Moguel
, N. Andrews
, Tuomo Sevon

^*Corresponding author for this work

BA4503 Severe accident analysis

Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH
Institute of Applied Energy (IAE), Japan
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT)
Paul Scherrer Institute (PSI)
Canadian Nuclear Laboratories (CNL)
Central Research Institute of Electric Power Industry (CRIEPI)
Japan Atomic Energy Agency
Korea Atomic Energy Research Institute (KAERI)
Institute for Radiological Protection and Nuclear Safety (IRSN)
Sandia National Laboratories

Research output: Contribution to journal › Article › Scientific › peer-review

38 Citations (Scopus)

Abstract

This is the second paper in a series of 3 in which results of severe accident analyses for Unit 2 of Fukushima Daiichi are presented, gained in phase 2 of the OECD/NEA project “Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF)”. Nine organizations of six countries (CNL Canada; CRIEPI, IAE, JAEA and NRA Japan; IRSN France; KAERI Korea; NRC/DOE/SNL U.S. and VTT Finland) submitted results of their calculated severe accident scenarios for Unit 2 of Fukushima Daiichi 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 2 against each other and against plant data, the evaluation of the accident progression and the final status inside the reactors. Special focus is on reactor pressure vessel status, melt release and fission product behavior and release. Unit 2 specific aspects will be highlighted and points of consensus as well as remaining uncertainties and data needs will be summarized.

Original language	English
Article number	110840
Journal	Nuclear Engineering and Design
Volume	369
DOIs	https://doi.org/10.1016/j.nucengdes.2020.110840
Publication status	Published - 1 Dec 2020
MoE publication type	A1 Journal article-refereed

Funding

The work done within the OECD/NEA BSAF project, phase 2, by the partners mentioned is acknowledged.

Keywords

Fukushima Daiichi NPP
OECD/NEA BSAF project
Severe accident analyses
Unit 2

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10.1016/j.nucengdes.2020.110840

Cite this

Sonnenkalb, M., Pellegrini, M., Herranz, L. E., Lind, T., Morreale, A. C., Kanda, K., Tamaki, H., Kim, S. I., Cousin, F., Fernandez Moguel, L., Andrews, N., & Sevon, T. (2020). Overview and outcomes of the OECD/NEA benchmark study of the accident at the Fukushima Daiichi NPS (BSAF), phase 2 – Results of severe accident analyses for Unit 2. Nuclear Engineering and Design, 369, Article 110840. https://doi.org/10.1016/j.nucengdes.2020.110840

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title = "Overview and outcomes of the OECD/NEA benchmark study of the accident at the Fukushima Daiichi NPS (BSAF), phase 2 – Results of severe accident analyses for Unit 2",

abstract = "This is the second paper in a series of 3 in which results of severe accident analyses for Unit 2 of Fukushima Daiichi are presented, gained in phase 2 of the OECD/NEA project “Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF)”. Nine organizations of six countries (CNL Canada; CRIEPI, IAE, JAEA and NRA Japan; IRSN France; KAERI Korea; NRC/DOE/SNL U.S. and VTT Finland) submitted results of their calculated severe accident scenarios for Unit 2 of Fukushima Daiichi using different severe accident codes (ASTEC, MAAP, MELCOR, SAMPSON, THALES-KICHE). The present paper describes the findings of the comparison of the participants{\textquoteright} results for Unit 2 against each other and against plant data, the evaluation of the accident progression and the final status inside the reactors. Special focus is on reactor pressure vessel status, melt release and fission product behavior and release. Unit 2 specific aspects will be highlighted and points of consensus as well as remaining uncertainties and data needs will be summarized.",

keywords = "Fukushima Daiichi NPP, OECD/NEA BSAF project, Severe accident analyses, Unit 2",

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month = dec,

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doi = "10.1016/j.nucengdes.2020.110840",

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Sonnenkalb, M, Pellegrini, M, Herranz, LE, Lind, T, Morreale, AC, Kanda, K, Tamaki, H, Kim, SI, Cousin, F, Fernandez Moguel, L, Andrews, N & Sevon, T 2020, 'Overview and outcomes of the OECD/NEA benchmark study of the accident at the Fukushima Daiichi NPS (BSAF), phase 2 – Results of severe accident analyses for Unit 2', Nuclear Engineering and Design, vol. 369, 110840. https://doi.org/10.1016/j.nucengdes.2020.110840

Overview and outcomes of the OECD/NEA benchmark study of the accident at the Fukushima Daiichi NPS (BSAF), phase 2 – Results of severe accident analyses for Unit 2. / Sonnenkalb, M.; Pellegrini, M.; Herranz, L. E. et al.
In: Nuclear Engineering and Design, Vol. 369, 110840, 01.12.2020.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Overview and outcomes of the OECD/NEA benchmark study of the accident at the Fukushima Daiichi NPS (BSAF), phase 2 – Results of severe accident analyses for Unit 2

AU - Sonnenkalb, M.

AU - Pellegrini, M.

AU - Herranz, L. E.

AU - Lind, T.

AU - Morreale, A. C.

AU - Kanda, K.

AU - Tamaki, H.

AU - Kim, S. I.

AU - Cousin, F.

AU - Fernandez Moguel, L.

AU - Andrews, N.

AU - Sevon, Tuomo

PY - 2020/12/1

Y1 - 2020/12/1

N2 - This is the second paper in a series of 3 in which results of severe accident analyses for Unit 2 of Fukushima Daiichi are presented, gained in phase 2 of the OECD/NEA project “Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF)”. Nine organizations of six countries (CNL Canada; CRIEPI, IAE, JAEA and NRA Japan; IRSN France; KAERI Korea; NRC/DOE/SNL U.S. and VTT Finland) submitted results of their calculated severe accident scenarios for Unit 2 of Fukushima Daiichi 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 2 against each other and against plant data, the evaluation of the accident progression and the final status inside the reactors. Special focus is on reactor pressure vessel status, melt release and fission product behavior and release. Unit 2 specific aspects will be highlighted and points of consensus as well as remaining uncertainties and data needs will be summarized.

AB - This is the second paper in a series of 3 in which results of severe accident analyses for Unit 2 of Fukushima Daiichi are presented, gained in phase 2 of the OECD/NEA project “Benchmark Study of the Accident at the Fukushima Daiichi Nuclear Power Plant (BSAF)”. Nine organizations of six countries (CNL Canada; CRIEPI, IAE, JAEA and NRA Japan; IRSN France; KAERI Korea; NRC/DOE/SNL U.S. and VTT Finland) submitted results of their calculated severe accident scenarios for Unit 2 of Fukushima Daiichi 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 2 against each other and against plant data, the evaluation of the accident progression and the final status inside the reactors. Special focus is on reactor pressure vessel status, melt release and fission product behavior and release. Unit 2 specific aspects will be highlighted and points of consensus as well as remaining uncertainties and data needs will be summarized.

KW - Fukushima Daiichi NPP

KW - OECD/NEA BSAF project

KW - Severe accident analyses

KW - Unit 2

UR - https://www.scopus.com/pages/publications/85092285941

U2 - 10.1016/j.nucengdes.2020.110840

DO - 10.1016/j.nucengdes.2020.110840

M3 - Article

AN - SCOPUS:85092285941

SN - 0029-5493

VL - 369

JO - Nuclear Engineering and Design

JF - Nuclear Engineering and Design

M1 - 110840

ER -

Overview and outcomes of the OECD/NEA benchmark study of the accident at the Fukushima Daiichi NPS (BSAF), phase 2 – Results of severe accident analyses for Unit 2

Abstract

Funding

Keywords

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