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

Martin Sonnenkalb; Marco Pellegrini; Luis Enrique Herranz; Terttaliisa Lind; A. C. Morreale; J. Kanda; H. Tamaki; S. I. Kim; F. Cousin; Leticia Fernandez-Moguel; Nathan Andrews; Tuomo Sevon

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

Martin Sonnenkalb, Marco Pellegrini, Luis Enrique Herranz, Terttaliisa Lind, A. C. Morreale, J. Kanda, H. Tamaki, S. I. Kim, F. Cousin, Leticia Fernandez-Moguel, Nathan Andrews, Tuomo Sevon

BA4503 Severe accident analysis

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

3 Citations (Scopus)

Abstract

The 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) behavior 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 (CNL Canada; CRIEPI, IAE, JAEA and NRA Japan; IRSN France; KAERI Korea; NRC/DOE/SNL U.S.A. 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 RPV status, melt release and FP 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. The results for Units 1 and 3, and an overall summary are presented in separated papers.

Original language	English
Title of host publication	Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18
Publisher	American Nuclear Society (ANS)
Pages	1119-1132
Number of pages	14
ISBN (Electronic)	978-0-89448-767-5
Publication status	Published - 2019
MoE publication type	A4 Article in a conference publication
Event	18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019 - Marriott Portland Downtown Waterfront, Portland, United States Duration: 18 Aug 2019 → 23 Aug 2019

Conference

Conference	18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019
Abbreviated title	NURETH-18
Country/Territory	United States
City	Portland
Period	18/08/19 → 23/08/19

Cite this

Sonnenkalb, M., Pellegrini, M., Herranz, L. E., Lind, T., Morreale, A. C., Kanda, J., Tamaki, H., Kim, S. I., Cousin, F., Fernandez-Moguel, L., Andrews, N., & Sevon, T. (2019). 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. In Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18 (pp. 1119-1132). Article 29244 American Nuclear Society (ANS).

Sonnenkalb, Martin ; Pellegrini, Marco ; Herranz, Luis Enrique et al. / 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. Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18. American Nuclear Society (ANS), 2019. pp. 1119-1132

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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 = "The 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) behavior 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 (CNL Canada; CRIEPI, IAE, JAEA and NRA Japan; IRSN France; KAERI Korea; NRC/DOE/SNL U.S.A. 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 RPV status, melt release and FP 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. The results for Units 1 and 3, and an overall summary are presented in separated papers.",

author = "Martin Sonnenkalb and Marco Pellegrini and Herranz, {Luis Enrique} and Terttaliisa Lind and Morreale, {A. C.} and J. Kanda and H. Tamaki and Kim, {S. I.} and F. Cousin and Leticia Fernandez-Moguel and Nathan Andrews and Tuomo Sevon",

note = "Funding Information: Partially sponsored by Contract 7901870.04 of the Italian National Research Council. Publisher Copyright: {\textcopyright} 2019 American Nuclear Society. All rights reserved.; 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019, NURETH-18 ; Conference date: 18-08-2019 Through 23-08-2019",

year = "2019",

language = "English",

pages = "1119--1132",

booktitle = "Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18",

publisher = "American Nuclear Society (ANS)",

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Sonnenkalb, M, Pellegrini, M, Herranz, LE, Lind, T, Morreale, AC, Kanda, J, Tamaki, H, Kim, SI, Cousin, F, Fernandez-Moguel, L, Andrews, N & Sevon, T 2019, 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. in Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18., 29244, American Nuclear Society (ANS), pp. 1119-1132, 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019, Portland, Oregon, United States, 18/08/19.

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, Martin; Pellegrini, Marco; Herranz, Luis Enrique et al.
Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18. American Nuclear Society (ANS), 2019. p. 1119-1132 29244.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Overview and Outcomes of the OECD/NEA Benchmark Study of the Accident at the Fukushima Daiichi NPS (BSAF) Phase 2

T2 - 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2019

AU - Sonnenkalb, Martin

AU - Pellegrini, Marco

AU - Herranz, Luis Enrique

AU - Lind, Terttaliisa

AU - Morreale, A. C.

AU - Kanda, J.

AU - Tamaki, H.

AU - Kim, S. I.

AU - Cousin, F.

AU - Fernandez-Moguel, Leticia

AU - Andrews, Nathan

AU - Sevon, Tuomo

PY - 2019

Y1 - 2019

N2 - The 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) behavior 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 (CNL Canada; CRIEPI, IAE, JAEA and NRA Japan; IRSN France; KAERI Korea; NRC/DOE/SNL U.S.A. 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 RPV status, melt release and FP 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. The results for Units 1 and 3, and an overall summary are presented in separated papers.

AB - The 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) behavior 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 (CNL Canada; CRIEPI, IAE, JAEA and NRA Japan; IRSN France; KAERI Korea; NRC/DOE/SNL U.S.A. 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 RPV status, melt release and FP 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. The results for Units 1 and 3, and an overall summary are presented in separated papers.

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M3 - Conference article in proceedings

SP - 1119

EP - 1132

BT - Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18

PB - American Nuclear Society (ANS)

Y2 - 18 August 2019 through 23 August 2019

ER -

Sonnenkalb M, Pellegrini M, Herranz LE, Lind T, Morreale AC, Kanda J et al. 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. In Proceedings of the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-18. American Nuclear Society (ANS). 2019. p. 1119-1132. 29244

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

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