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Title: MELCOR simulations of the severe accident at Fukushima Daiichi Unit 3

Abstract

In response to the accident at the Fukushima Daiichi nuclear power station in Japan, the U.S. Nuclear Regulatory Commission and U.S. Department of Energy agreed to jointly sponsor an accident reconstruction study as a means of assessing the severe accident modeling capability of the MELCOR code. Objectives of the project included reconstruction of the accident progressions using computer models and accident data, and validation of the MELCOR code and the Fukushima models against plant data. A MELCOR 2.1 model of the Fukushima Daiichi Unit 3 reactor is developed using plant-specific information and accident-specific boundary conditions, which involve considerable uncertainty due to the inherent nature of severe accidents. Publicly available thermal-hydraulic data and radioactivity release estimates have evolved significantly since the accidents. Such data are expected to continually change as the reactors are decommissioned and more measurements are performed. As a result, the MELCOR simulations in this work primarily use boundary conditions that are based on available plant data as of May 2012.

Authors:
 [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1333851
Report Number(s):
SAND-2013-6886J
Journal ID: ISSN 0029-5450; 566964
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Technology
Additional Journal Information:
Journal Name: Nuclear Technology; Journal ID: ISSN 0029-5450
Publisher:
American Nuclear Society (ANS)
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; 97 MATHEMATICS AND COMPUTING

Citation Formats

Cardoni, Jeffrey, Gauntt, Randall, Kalinich, Donald, and Phillips, Jesse. MELCOR simulations of the severe accident at Fukushima Daiichi Unit 3. United States: N. p., 2014. Web. doi:10.13182/nt13-41.
Cardoni, Jeffrey, Gauntt, Randall, Kalinich, Donald, & Phillips, Jesse. MELCOR simulations of the severe accident at Fukushima Daiichi Unit 3. United States. doi:10.13182/nt13-41.
Cardoni, Jeffrey, Gauntt, Randall, Kalinich, Donald, and Phillips, Jesse. Thu . "MELCOR simulations of the severe accident at Fukushima Daiichi Unit 3". United States. doi:10.13182/nt13-41. https://www.osti.gov/servlets/purl/1333851.
@article{osti_1333851,
title = {MELCOR simulations of the severe accident at Fukushima Daiichi Unit 3},
author = {Cardoni, Jeffrey and Gauntt, Randall and Kalinich, Donald and Phillips, Jesse},
abstractNote = {In response to the accident at the Fukushima Daiichi nuclear power station in Japan, the U.S. Nuclear Regulatory Commission and U.S. Department of Energy agreed to jointly sponsor an accident reconstruction study as a means of assessing the severe accident modeling capability of the MELCOR code. Objectives of the project included reconstruction of the accident progressions using computer models and accident data, and validation of the MELCOR code and the Fukushima models against plant data. A MELCOR 2.1 model of the Fukushima Daiichi Unit 3 reactor is developed using plant-specific information and accident-specific boundary conditions, which involve considerable uncertainty due to the inherent nature of severe accidents. Publicly available thermal-hydraulic data and radioactivity release estimates have evolved significantly since the accidents. Such data are expected to continually change as the reactors are decommissioned and more measurements are performed. As a result, the MELCOR simulations in this work primarily use boundary conditions that are based on available plant data as of May 2012.},
doi = {10.13182/nt13-41},
journal = {Nuclear Technology},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {5}
}

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Cited by: 2 works
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