Fuel assembly
Creators
- 1. Toshiba Corp., Kawasaki, Kanagawa (Japan)
Description
A plurality of fuel pellets are filled in a cladding tube of a fuel rod. A plenum portion is disposed above the fuel pellets. A getter tube and a spring are inserted to the plenum portion. In addition, a neutron control portion is disposed below the getter tube in the plenum portion. The neutron controlling portion is composed of a high energy neutron moderator or a neutron absorber, for example, ZrH2. Neutrons generated by nuclear fission in the fuel pellets are moderated at first in the fuel pellets. Neutrons directing in the axial direction of the fuel rod are moderated by the neutron controlling portion, further moderated by the cladding tube or an upper end plug, and then discharged into coolants. This can reduce dose equivalent rate in turbine buildings and at the boundary of sites. (I.N.)
Availability note (English)
Available from JAPIO. Also available from EPO.Additional details
Publishing Information
- Imprint Pagination
- 5 p.
- IPC:
- Int. Cl. G21C3/28; G21C3/30//G21C3/16.
- IPC
- Int. Cl. G21C3/28; G21C3/30//G21C3/16.
- Patent number
- JP patent document 7-55972/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 26073857
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- BWR TYPE REACTORS; DOSE EQUIVALENTS; FUEL ASSEMBLIES; FUEL PELLETS; FUEL RODS; GETTERS; MODERATORS; NEUTRON ABSORBERS; NITROGEN 16; ZIRCONIUM HYDRIDES
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; ENRICHED URANIUM REACTORS; FUEL ELEMENTS; HYDRIDES; HYDROGEN COMPOUNDS; ISOTOPES; LIGHT NUCLEI; NITROGEN ISOTOPES; NUCLEI; ODD-ODD NUCLEI; POWER REACTORS; RADIOISOTOPES; REACTOR COMPONENTS; REACTORS; SECONDS LIVING RADIOISOTOPES; THERMAL REACTORS; TRANSITION ELEMENT COMPOUNDS; WATER COOLED REACTORS; WATER MODERATED REACTORS; ZIRCONIUM COMPOUNDS
Optional Information
- Secondary number(s)
- JP patent application 5-200550.