Analysis of the light-water flooding of the HFBR thimble tubes
- Brookhaven National Lab., Upton, NY (United States)
The fuel elements surrounding the central vertical thimble tubes in the Brookhaven National Laboratory High-Flux Beam Reactor (HFBR) are highly undermoderated, and light-water flooding of these irradiation thimbles results in a positive core reactivity insertion. The light-water contamination of the D{sub 2}O thimble tube coolant is the result of a postulated double-ended guillotine break of a U tube in the experimental facilities heat exchanger during the HFBR light-water flooding (LWF) event. While this event has a low probability (1.3 x 10{sup {minus}4}/yr), the HFBR protection system must ensure adequate thermal margin during the power transient. This paper summarizes the analysis of the HFBR thimble-tube LWF event.
- OSTI ID:
- 7168342
- Report Number(s):
- CONF-911107--
- Journal Information:
- Transactions of the American Nuclear Society; (United States), Journal Name: Transactions of the American Nuclear Society; (United States) Vol. 63; ISSN TANSA; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220600 -- Nuclear Reactor Technology-- Research
Test & Experimental Reactors
220900* -- Nuclear Reactor Technology-- Reactor Safety
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DIFFERENTIAL EQUATIONS
ENGINEERED SAFETY SYSTEMS
ENRICHED URANIUM REACTORS
EQUATIONS
EXPERIMENTAL CHANNELS
FAILURES
FUEL ELEMENTS
GUIDE TUBES
HEAT EXCHANGERS
HEAVY WATER
HEAVY WATER COOLED REACTORS
HEAVY WATER MODERATED REACTORS
HFBR REACTOR
HYDROGEN COMPOUNDS
IRRADIATION CAPSULES
MODERATORS
NATIONAL ORGANIZATIONS
NEUTRON DIFFUSION EQUATION
OXYGEN COMPOUNDS
PHYSICS
REACTIVITY INSERTIONS
REACTOR CHANNELS
REACTOR COMPONENTS
REACTOR CORES
REACTOR EXPERIMENTAL FACILITIES
REACTOR PHYSICS
REACTOR PROTECTION SYSTEMS
REACTOR SAFETY
REACTORS
RESEARCH AND TEST REACTORS
RESEARCH REACTORS
RUPTURES
SAFETY
TANK TYPE REACTORS
THERMAL REACTORS
TIME DEPENDENCE
TRANSIENTS
TUBES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
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