Published October 23, 1998 | Version v1
Patent Metadata-only

Control rod for nuclear reactor

Creators

Description

The present invention provides a control rod for a PWR type reactor with less irradiation expansion even if the time for the use is increased and preventing occurrence of cracks and rupture of a cladding tube to extend the working life remarkably. Namely, a control rod has a plurality of neutron absorbers accumulated in a cladding tube. The neutron absorber is formed by a silver-indium-cadmium alloy, and the neutron absorber in a lower portion has relatively a smaller silver content and a greater indium content than those of the upper neutron absorber. The neutron absorber comprises two kinds of upper and lower neutron absorbers. The content of the component element of the lower neutron absorber comprising silver Ag-indium In-cadmium Cd alloy satisfies the following formula. 90w% ≤ Ag + In ≤ 95w%, 50w% ≤ Ag ≤ 70w% and 20w% ≤ In ≤ 45w%. (T.M.)

Availability note (English)

Available from JAPIO. Also available from EPO.

Additional details

Publishing Information

Imprint Pagination
4 p.
IPC:
Int. Cl. G21C7/10; G21C7/24
IPC
Int. Cl. G21C7/10; G21C7/24
Patent number
JP patent document 10-282282/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
30007093
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
CADMIUM; CONTROL ELEMENTS; DEFORMATION; INDIUM; NEUTRON ABSORBERS; PWR TYPE REACTORS; REACTOR CONTROL SYSTEMS; SILVER
Descriptors DEC
CONTROL SYSTEMS; ELEMENTS; ENRICHED URANIUM REACTORS; METALS; POWER REACTORS; REACTOR COMPONENTS; REACTORS; THERMAL REACTORS; TRANSITION ELEMENTS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Secondary number(s)
JP patent application 9-86720