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 1

L. E. Herranz; M. Pellegrini; T. Lind; M. Sonnenkalb; L. Godin-Jacqmin; C. López; K. Dolganov; F. Cousin; H. Tamaki; T. W. Kim; H. Hoshi; N. Andrews; Tuomo Sevon

doi:10.1016/j.nucengdes.2020.110849

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 1

L. E. Herranz^*
, M. Pellegrini
, T. Lind
, M. Sonnenkalb
, L. Godin-Jacqmin
, C. López
, K. Dolganov
, F. Cousin
, H. Tamaki
, T. W. Kim
, H. Hoshi
, N. Andrews
, Tuomo Sevon

^*Corresponding author for this work

BA4503 Severe accident analysis

Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT)
Institute of Applied Energy (IAE), Japan
Paul Scherrer Institute (PSI)
Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH
Commissariat a l'Energie Atomique et aux Energies Alternatives (CEA)
Nuclear Safety Institute of the Russian Academy of Sciences (IBRAE RAN)
Institute for Radiological Protection and Nuclear Safety (IRSN)
Japan Atomic Energy Agency
Korea Atomic Energy Research Institute (KAERI)
Nuclear Regulation Authority
Sandia National Laboratories

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

36 Citations (Scopus)

Abstract

Phase 2 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 Spain; 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, SOCRAT, THALES-KICHE). This 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 are presented next in separated papers.

Original language	English
Article number	110849
Journal	Nuclear Engineering and Design
Volume	369
DOIs	https://doi.org/10.1016/j.nucengdes.2020.110849
Publication status	Published - 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 1

Access to Document

10.1016/j.nucengdes.2020.110849

Cite this

Herranz, L. E., Pellegrini, M., Lind, T., Sonnenkalb, M., Godin-Jacqmin, L., López, C., Dolganov, K., Cousin, F., Tamaki, H., Kim, T. W., Hoshi, H., 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 1. Nuclear Engineering and Design, 369, Article 110849. https://doi.org/10.1016/j.nucengdes.2020.110849

@article{97ffc189a9e142a79af3bc36b685f5d6,

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 1",

abstract = "Phase 2 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 Spain; 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, SOCRAT, THALES-KICHE). This 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 are presented next in separated papers.",

keywords = "Fukushima Daiichi NPP, OECD/NEA BSAF project, Severe accident analyses, Unit 1",

author = "Herranz, \{L. E.\} and M. Pellegrini and T. Lind and M. Sonnenkalb and L. Godin-Jacqmin and C. L{\'o}pez and K. Dolganov and F. Cousin and H. Tamaki and Kim, \{T. W.\} and H. Hoshi and N. Andrews and Tuomo Sevon",

year = "2020",

month = dec,

doi = "10.1016/j.nucengdes.2020.110849",

language = "English",

volume = "369",

journal = "Nuclear Engineering and Design",

issn = "0029-5493",

publisher = "Elsevier",

}

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 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 1', Nuclear Engineering and Design, vol. 369, 110849. https://doi.org/10.1016/j.nucengdes.2020.110849

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 1

AU - Herranz, L. E.

AU - Pellegrini, M.

AU - Lind, T.

AU - Sonnenkalb, M.

AU - Godin-Jacqmin, L.

AU - López, C.

AU - Dolganov, K.

AU - Cousin, F.

AU - Tamaki, H.

AU - Kim, T. W.

AU - Hoshi, H.

AU - Andrews, N.

AU - Sevon, Tuomo

PY - 2020/12

Y1 - 2020/12

N2 - Phase 2 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 Spain; 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, SOCRAT, THALES-KICHE). This 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 are presented next in separated papers.

AB - Phase 2 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 Spain; 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, SOCRAT, THALES-KICHE). This 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 are presented next in separated papers.

KW - Fukushima Daiichi NPP

KW - OECD/NEA BSAF project

KW - Severe accident analyses

KW - Unit 1

UR - https://www.scopus.com/pages/publications/85087857901

U2 - 10.1016/j.nucengdes.2020.110849

DO - 10.1016/j.nucengdes.2020.110849

M3 - Article

AN - SCOPUS:85087857901

SN - 0029-5493

VL - 369

JO - Nuclear Engineering and Design

JF - Nuclear Engineering and Design

M1 - 110849

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 1

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this