Published May 7, 1996 | Version v1
Patent Metadata-only

Reactor fuel assembly

Creators

Description

Short rods in which short natural uranium is sealed are disposed at an axial center of a water rod. A power distribution of a PWR-type reactor is in proportion to the distribution of thermal neutron fluxes if fuel enrichment degree is constant. Further, the thermal neutron fluxes are generally increased where an infinite multiplication factor of the fuel assembly is increased. According to the present invention, the distribution of thermal neutron fluxes is made flat in the axial direction due to thermal neutron-absorption of natural uranium. As a result, the power distribution is flattened. (T.M.)

Availability note (English)

Available from JAPIO. Also available from EPO.

Additional details

Publishing Information

Imprint Pagination
3 p.
IPC:
Int. Cl. G21C3/328; G21C3/326.
IPC
Int. Cl. G21C3/328; G21C3/326.
Patent number
JP patent document 8-114690/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
28001975
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
ABSORPTION; FUEL ASSEMBLIES; NATURAL URANIUM; NEUTRON FLUX; POWER DISTRIBUTION; PRESSURE TUBE REACTORS; REACTOR CHANNELS; REACTOR CORES; SEALS; THERMAL NEUTRONS
Descriptors DEC
ACTINIDES; BARYONS; DISTRIBUTION; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; METALS; NEUTRONS; NUCLEONS; POWER REACTORS; RADIATION FLUX; REACTOR COMPONENTS; REACTORS; SORPTION; SPATIAL DISTRIBUTION; URANIUM

Optional Information

Secondary number(s)
JP patent application 6-250357.