Published April 25, 1987 | Version v1
Patent Metadata-only

Fuel assemblies for use in BWR type reactors

Creators

  • 1. Nippon Atomic Industry Group Co. Ltd., Tokyo

Description

Purpose: To enable to use recovered uraniums without worsening the local power peaking in a nuclear fuel assembly. Constitution: Fuel pellets prepared by using at least a portion of recovered uranium obtained by the reprocessing of spent nuclear fuels are prepared and a plurality of fuel rods prepared by charging such pellets into fuel cans are arranged in a lattice-like manner to obtain a fuel assembly. In order to compensate the reactivity reduction due to 236U contained in the recovered uranium, the increment of enrichment degree for each of the fuel rods is made such that it is lowered as the enrichment degree for each of the fuel pellets applied with no compensation is lowered. (Sekiya, K.)

Availability note (English)

Available from JAPIO. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
4 p.
IPC:
Int. Cl. G21C3/30.
IPC
Int. Cl. G21C3/30.
Patent number
JP patent document 62-90595/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
19013753
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BWR TYPE REACTORS; FUEL ASSEMBLIES; FUEL PELLETS; PEAKS; QUANTITY RATIO; REACTIVITY WORTHS; SPENT FUEL ELEMENTS; URANIUM 236
Descriptors DEC
ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; ENRICHED URANIUM REACTORS; EVEN-EVEN NUCLEI; FUEL ELEMENTS; HEAVY NUCLEI; ISOTOPES; NUCLEI; POWER REACTORS; RADIOISOTOPES; REACTOR COMPONENTS; REACTORS; SPONTANEOUS FISSION RADIOISOTO; THERMAL REACTORS; URANIUM ISOTOPES; WATER COOLED REACTORS; WATER MODERATED REACTORS; YEARS LIVING RADIOISOTOPES

Optional Information

Secondary number(s)
JP patent application 60-229980.