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
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220100 -- Nuclear Reactor Technology-- Theory & Calculation
220400* -- Nuclear Reactor Technology-- Control Systems
ALLOYS
BORON CARBIDES
BORON COMPOUNDS
CADMIUM
CARBIDES
CARBON COMPOUNDS
CONTROL ROD WORTHS
ELEMENTS
FUEL ASSEMBLIES
HAFNIUM
HIGH ALLOY STEELS
HYBRID REACTORS
INCONEL ALLOYS
INDIUM
IRON ALLOYS
IRON BASE ALLOYS
KINETICS
MATERIALS TESTING
METALS
NEUTRON ABSORBERS
NICKEL ALLOYS
NICKEL BASE ALLOYS
REACTOR KINETICS
STAINLESS STEELS
STEELS
TESTING
TRANSITION ELEMENTS
ZIRCONIUM