Hybrid nuclear reactor grey rod to obtain required reactivity worth
This patent describes a grey rod for use in controlling reactivity of a fuel assembly in a nuclear reactor. It comprises tubular, elongated, cladding selected from the weak neutron absorbing material group consisting of stainless steel, zirconium and inconel; a first cladding insert including pellets selected from the strong, neutron absorbing material group consisting of hafnium, silver- indium-cadmium, and boron carbide; and a second cladding insert including pellets selected from the weak neutron absorbing material group consisting of stainless steel, inconel, zirconium and zircaloy, wherein the first and second inserts extend substantially along the length of the cladding, and wherein pellets from the alternate.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- Patent Number(s):
- US 5064607; A
- Application Number:
- PPN: US 7-377492
- OSTI ID:
- 5855264
- Resource Relation:
- Patent File Date: 10 Jul 1989
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HYBRID REACTORS
CONTROL ROD WORTHS
NEUTRON ABSORBERS
MATERIALS TESTING
BORON CARBIDES
CADMIUM
FUEL ASSEMBLIES
HAFNIUM
INCONEL ALLOYS
INDIUM
REACTOR KINETICS
STAINLESS STEELS
ZIRCONIUM
ALLOYS
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
ELEMENTS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
KINETICS
METALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
STEELS
TESTING
TRANSITION ELEMENTS
220400* - Nuclear Reactor Technology- Control Systems
220100 - Nuclear Reactor Technology- Theory & Calculation