Published November 2, 1981 | Version v1
Patent Metadata-only

Control rod

Creators

Description

Purpose: To prolong the nuclear and mechanical lifetime of a control rod by using a member having large neutron absorption ability for a tube for containing a neutron absorber. Constitution: A neutron absorber made of rare earth metals such as gadolinium or the like having a large absorptivity for thermal neutrons is contained in a tube made of hafnium or the like having large absorptivity for epithermal neutrons, and is sealed. The above neutron absorber and the material forming the tube have a (n, γ) reaction. Since neutrons will be effectively absorbed by the thus formed control rod, the nuclear and mechanical lifetime of the control rod can be prolonged. (Aizawa, K.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
3 p.
IPC:
Int. Cl. G21C7/06.
IPC
Int. Cl. G21C7/06.
Patent number
JP patent document 56-140288/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
13714919
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BWR TYPE REACTORS; CONTROL ELEMENTS; EPITHERMAL NEUTRONS; EXPANSION; GADOLINIUM; HAFNIUM; MECHANICAL PROPERTIES; NEUTRON ABSORBERS; THERMAL NEUTRONS; TUBES
Descriptors DEC
BARYONS; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; METALS; NEUTRONS; NUCLEONS; RARE EARTHS; REACTOR COMPONENTS; REACTORS; TRANSITION ELEMENTS; WATER COOLED REACTORS; WATER MODERATED REACTORS