Published March 1998 | Version v1
Report Open

Plutonium rock-like fuel LWR nuclear characteristics and transient behavior in accidents

Creators

  • 1. Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

Description

For the disposition of excess plutonium, rock-like oxide (ROX) fuel systems based on zirconia (ZrO2) or thoria (ThO2) have been studied. Safety analysis of ROX fueled PWR showed it is necessary to increase Doppler reactivity coefficient and to reduce power peaking factor of zirconia type ROX (Zr-ROX) fueled core. For these improvements, Zr-ROX fuel composition was modified by considering additives of ThO2, UO2 or Er2O3, and reducing Gd2O3 content. As a result of the modification, comparable, transient behavior to UO2 fuel PWR was obtained with UO2-Er2O3 added Zr-ROX fuel, while the plutonium transmutation capability is slightly reduced. (author)

Availability note (English)

Available from INIS in electronic form

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Additional details

Publishing Information

Imprint Pagination
50 p.
Report number
JAERI-Research--98-009

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
29039127
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
BURNUP; LOSS OF COOLANT; NUCLEAR FUELS; PLUTONIUM; PWR TYPE REACTORS; REACTIVITY; REACTIVITY INSERTIONS; REACTOR CORES; THORIUM OXIDES; TRANSIENTS; TRANSMUTATION; ZIRCONIUM OXIDES
Descriptors DEC
ACCIDENTS; ACTINIDE COMPOUNDS; ACTINIDES; CHALCOGENIDES; ELEMENTS; ENERGY SOURCES; ENRICHED URANIUM REACTORS; FUELS; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; POWER REACTORS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTOR MATERIALS; REACTORS; THERMAL REACTORS; THORIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSURANIUM ELEMENTS; WATER COOLED REACTORS; WATER MODERATED REACTORS; ZIRCONIUM COMPOUNDS