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Title: Impact of spatial kinetics in severe accident analysis for a large HWR

Abstract

The impact on spatial kinetics on the analysis of severe accidents initiated by the unprotected withdrawal of one or more control rods is investigated for a large heavy water reactor. Large inter- and intra-assembly power shifts are observed, and the importance of detailed geometrical modeling of fuel assemblies is demonstrated. Neglect of space-time effects is shown to lead to erroneous estimates of safety margins, and of accident consequences in the event safety margins are exceeded. The results and conclusions are typical of what would be expected for any large, loosely coupled core.

Authors:
Publication Date:
Research Org.:
Argonne National Lab., IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10131036
Report Number(s):
ANL/RA/CP-80013; CONF-940402-15
ON: DE94007676; TRN: 94:008457
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: International topical meeting on the safety of advanced reactors,Pittsburgh, PA (United States),18-20 Apr 1994; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; HEAVY WATER MODERATED REACTORS; REACTOR CONTROL SYSTEMS; REACTOR ACCIDENTS; CONTROL ELEMENTS; D CODES; SPATIAL DISTRIBUTION; REACTOR KINETICS; HEAT TRANSFER; HYDRAULICS; REACTOR SAFETY; FEEDBACK; REACTIVITY; 220900; 220400; 220100; 210400; CONTROL SYSTEMS; THEORY AND CALCULATION; POWER REACTORS, NONBREEDING, OTHERWISE MODERATED OR UNMODERATED

Citation Formats

Morris, E.E. Impact of spatial kinetics in severe accident analysis for a large HWR. United States: N. p., 1994. Web.
Morris, E.E. Impact of spatial kinetics in severe accident analysis for a large HWR. United States.
Morris, E.E. Tue . "Impact of spatial kinetics in severe accident analysis for a large HWR". United States. https://www.osti.gov/servlets/purl/10131036.
@article{osti_10131036,
title = {Impact of spatial kinetics in severe accident analysis for a large HWR},
author = {Morris, E.E.},
abstractNote = {The impact on spatial kinetics on the analysis of severe accidents initiated by the unprotected withdrawal of one or more control rods is investigated for a large heavy water reactor. Large inter- and intra-assembly power shifts are observed, and the importance of detailed geometrical modeling of fuel assemblies is demonstrated. Neglect of space-time effects is shown to lead to erroneous estimates of safety margins, and of accident consequences in the event safety margins are exceeded. The results and conclusions are typical of what would be expected for any large, loosely coupled core.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}

Conference:
Other availability
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