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

Conference · Tue Mar 01 00:00:00 EST 1994

OSTI ID:10131036

Morris, E E

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.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10131036
• Report Number(s): ANL/RA/CP-80013; CONF-940402-15; ON: DE94007676; TRN: 94:008457
• 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

Related Subjects

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