A direct comparison of MELCOR 1.8.3 and MAAP4 results for several PWR & BWR accident sequences

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This paper presents a comparison of calculations of severe accident progression for several postulated accident sequences for representative Pressurized Water Reactors (PWR) and Boiling Water Reactors (BWR) nuclear power plants performed with the MELCOR 1.8.3 and the MAAP4 computer codes. The PWR system examined in this study is a 1100 MWe system similar in design to a Westinghouse 3-loop plant with a large dry containment; the BWR is a 1100 MWe system similar in design to General Electric BWR/4 with a Mark I containment. A total of nine accident sequences were studied with both codes. Results of these calculations are ... continued below

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9 p.

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Leonard, M.T.; Ashbaugh, S.G.; Cole, R.K.; Bergeron, K.D. & Nagashima, K. August 1, 1996.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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This paper presents a comparison of calculations of severe accident progression for several postulated accident sequences for representative Pressurized Water Reactors (PWR) and Boiling Water Reactors (BWR) nuclear power plants performed with the MELCOR 1.8.3 and the MAAP4 computer codes. The PWR system examined in this study is a 1100 MWe system similar in design to a Westinghouse 3-loop plant with a large dry containment; the BWR is a 1100 MWe system similar in design to General Electric BWR/4 with a Mark I containment. A total of nine accident sequences were studied with both codes. Results of these calculations are compared to identify major differences in the timing of key events in the calculated accident progression or other important aspects of severe accident behavior, and to identify specific sources of the observed differences.

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9 p.

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INIS; OSTI as DE96014078

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  • International topical meeting on probabilistic safety assessment - moving toward risk based regulation, Park City, UT (United States), 29 Sep - 3 Oct 1996

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  • Other: DE96014078
  • Report No.: SAND--96-2053C
  • Report No.: CONF-960912--29
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 288425
  • Archival Resource Key: ark:/67531/metadc672698

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  • August 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • April 14, 2016, 8:26 p.m.

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Leonard, M.T.; Ashbaugh, S.G.; Cole, R.K.; Bergeron, K.D. & Nagashima, K. A direct comparison of MELCOR 1.8.3 and MAAP4 results for several PWR & BWR accident sequences, article, August 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc672698/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.