Control rods for nuclear reactors
Description
Purpose: To obtain a control rod of high reactivity worth compensating the neutron absorption performance of the control rod using neutron absorbers such as hafnium with less neutron absorption as compared with boron carbide. Constitution: In addition to main neutron absorbers constituting a neutron absorber rod, second neutron absorber are disposed surrounding the neutron absorber rod. The second neutron absorbers usable herein include long-life type neutron absorbers such as hafnium and europium, as well as cadmium. Ag-In-Cd alloy and stainless steels incorporated with boron. In the case of a control rod using boron carbide, the life can be improved without imparing the feature thereof of being inexpensive and light weight. Furthermore, in the case of a control rod with a low reactivity worth, since the reactivity can be added with no increase in the weight, the effective utilization of extensive hafnium is possible. (Moriyama, K.)
Availability note (English)
Available from JAPIO. Also available from INPADOC.Additional details
Publishing Information
- Imprint Pagination
- 7 p.
- IPC:
- Int. Cl. G21C7/10.
- IPC
- Int. Cl. G21C7/10.
- Patent number
- JP patent document 60-3584/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 17006928
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- BORON CARBIDES; BWR TYPE REACTORS; CONTROL ELEMENTS; EUROPIUM; HAFNIUM; HYBRIDIZATION; MECHANICAL STRUCTURES; NEUTRON ABSORBERS; NEUTRON FLUX; REACTIVITY WORTHS; WEIGHT
- Descriptors DEC
- BORON COMPOUNDS; CARBIDES; CARBON COMPOUNDS; ELEMENTS; ENRICHED URANIUM REACTORS; METALS; POWER REACTORS; RADIATION FLUX; RARE EARTHS; REACTOR COMPONENTS; REACTORS; THERMAL REACTORS; TRANSITION ELEMENTS; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Secondary number(s)
- JP patent application 58-110775.