Published July 7, 1997 | Version v1
Patent Metadata-only

Fuel assembly

Creators

Description

The fuel assembly of the present invention is used for a BWR type reactor. The fuel assembly has a rectangular shape and comprises a channel box, a plurality of fuel rods and one water rod. The fuel assembly has a volume ratio of water to fuels of about 3.2, and constitutes a system having a soft neutron spectrum. The fuel rods include those having an outer radius of 6.3mm and loaded with plutonium fuels and those having an outer radius of 6.1mm and loaded with plutonium fuels. The enrichment degree of the fissile plutonium is 3.5w/o with enrichment to natural uranium. Fuel rods having a larger radius, compared with other regions, are used at a portion near gap water at the outside of the channel box where the power tends to be high. With such a constitution, the power distribution in the fuel assembly can be flattened without lowering fuel economy. (I.N.)

Availability note (English)

Available from JAPIO. Also available from EPO.

Additional details

Publishing Information

Imprint Pagination
5 p.
IPC:
Int. Cl. G21C3/328; G21C3/62.
IPC
Int. Cl. G21C3/328; G21C3/62.
Patent number
JP patent document 9-178873/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
29001013
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BWR TYPE REACTORS; CONFIGURATION; DIMENSIONS; ENRICHED URANIUM; FUEL ASSEMBLIES; FUEL RODS; NATURAL URANIUM; NEUTRON FLUX FLATTENING; PLUTONIUM
Descriptors DEC
ACTINIDES; ELEMENTS; ENRICHED URANIUM REACTORS; FUEL ELEMENTS; ISOTOPE ENRICHED MATERIALS; MATERIALS; METALS; POWER REACTORS; REACTOR COMPONENTS; REACTORS; THERMAL REACTORS; TRANSURANIUM ELEMENTS; URANIUM; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Secondary number(s)
JP patent application 7-340309.