Published June 26, 1998 | Version v1
Patent Metadata-only

Fuel assembly

Creators

Description

A fuel assembly has a square shape, and comprises a channel box, 28 fuel rods A, 32 fuel rods B and one water rod. The fuel rods A comprise plutonium fuels with cooling time of 9 years before reprocessing. The fuel B comprises plutonium fuels with a cooling time of 2 years before reprocessing. Both of fuels A and B have a fissile plutonium enrichment degree of 3.5w/o and enrich natural uranium. Fuels A comprising plutonium with long cooling time till reprocessing for the fuel rods to be disposed at the peripheral portion where the power tends to be increased compared with fuel rods in other regions thereby lowering the power. As a result, 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
4 p.
IPC:
Int. Cl. G21C3/328; G21C3/30; G21C3/62
IPC
Int. Cl. G21C3/328; G21C3/30; G21C3/62
Patent number
JP patent document 10-170676/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
29060191
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BWR TYPE REACTORS; CONCENTRATION RATIO; CONFIGURATION; FUEL ASSEMBLIES; FUEL COOLING TIME; FUEL RODS; NATURAL URANIUM; NEUTRON FLUX FLATTENING; PLUTONIUM; REACTOR CHANNELS; REPROCESSING
Descriptors DEC
ACTINIDES; ELEMENTS; ENRICHED URANIUM REACTORS; FUEL ELEMENTS; METALS; POWER REACTORS; REACTOR COMPONENTS; REACTORS; SEPARATION PROCESSES; THERMAL REACTORS; TRANSURANIUM ELEMENTS; URANIUM; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Secondary number(s)
JP patent application 8-328199