Analyses of Greek Research Reactor with mixed HEU-LEU Be reflected core

Conference · Fri Dec 31 04:00:00 EST 1993

OSTI ID:10110480

Deen, J R; Snelgrove, J L ^[1]; Papastergiou, K ^[2]

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1. Argonne National Lab., IL (United States)
2. National Center for Scientific Research, Athens (Greece)

The fuel-cycle analyses presented in this paper provide specific steps to be taken in the transition from a 36-element water-reflected HEU core to a 33-element LEU equilibrium core with a Be reflector on two faces. The first step will be to install the Be reflector and remove the highest burnup HEU fuel. The smaller Be-reflected core will be refueled with LEU fuel. All analyses were performed using a planar 5-group REBUS3 model benchmarked to VIM Monte Carlo. In addition to fuel cycle results, the control rod worth, reactivity response to increased fuel and water temperature and decreased water density were compared for the transition core and the reference HEU 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: 10110480
• Report Number(s): ANL/EP/CP--81423; CONF-9310185--9; ON: DE94004611
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220600
DEMOCRITUS REACTOR
FUEL CYCLE
HIGHLY ENRICHED URANIUM
MODIFICATIONS
NEUTRON REFLECTORS
NUCLEAR FUELS
R CODES
REACTIVITY
REACTOR CORES
RESEARCH AND TEST REACTORS
RESEARCH
TEST
TRAINING
PRODUCTION
IRRADIATION
MATERIALS TESTING REACTORS
SLIGHTLY ENRICHED URANIUM
V CODES