Cladding corrosion and hydriding in irradiated defected zircaloy fuel rods
Twenty-one LWBR irradiation test rods containing ThO/sub 2/-UO/sub 2/ fuel and Zircaloy cladding with holes or cracks operated successfully. The irradiation tests were performed in the Engineering Test Reactor (ETR) and the Advanced Test Reactor (ATR) at the Idaho National Engineering Laboratory and in the National Research Experimental Reactor (NRX) located at Chalk River. Zircaloy cladding corrosion on the inside and outside diameter surfaces and hydrogen pickup in the cladding were measured. The observed outer surface Zircaloy cladding corrosion oxide thicknesses of the test rods were similar to thicknesses measured for non-defected irradiation test rods. An analysis model gave results which were in reasonable agreement with the outer surface oxide thicknesses both of defected and non-defected rods. When the analysis procedure was modified to account for additional corrosion proportional to fission rate, the calculated values agreed well with measured inner oxide corrosion films values of defected rods. Hydrogen pickup in the defected rods was not directly proportional to local corrosion oxide weight gain as was the case for non-defected rods.
- OSTI ID:
- 6980608
- Report Number(s):
- CONF-870314-
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cladding corrosion and hydriding in irradiated defected zircaloy fuel rods (LWBR Development Program)
Corrosion and hydriding of irradiated Zircaloy fuel-rod cladding (LWBR Development Program)
Related Subjects
210500* -- Power Reactors
Breeding
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
360106 -- Metals & Alloys-- Radiation Effects
ACTINIDE COMPOUNDS
ALLOYS
BREEDER REACTORS
CHALCOGENIDES
CHEMICAL REACTIONS
CLADDING
CORROSION
CRACKS
DEPOSITION
FUEL ELEMENTS
FUEL RODS
FUEL-CLADDING INTERACTIONS
HYDRIDATION
IRRADIATION
LWBR TYPE REACTORS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
REACTOR COMPONENTS
REACTORS
SURFACE COATING
THERMAL REACTORS
THORIUM COMPOUNDS
THORIUM OXIDES
TIN ALLOYS
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
WATER COOLED REACTORS
WATER MODERATED REACTORS
ZIRCALOY
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS