EFFECTS OF IRRADIATION ON STAINLESS STEEL-CLAD UO$sup 2$ PELLETS IN HELIUM OR CARBON DIOXIDE

Autor:	G.E. Lamale, J.E. Gates, R.F. Dickerson
Rok vydání:	1959
Předmět:	Cladding (metalworking) chemistry.chemical_compound Materials science chemistry Carbon dioxide Metallurgy Uranium dioxide Pellets chemistry.chemical_element Irradiation Neutron temperature Helium Coolant
DOI:	10.2172/4240779
Popis:	Uranium dioxide pellets sealed in Type 316 stainless steel containers with a helium gas were irradiated in helium and in C0/sub 2/ in thermal fluxes or the order of 1 x 10/sup 13/ n/(cm/sup 2/)(sec). Cladding-surface temperatures were reportedly between 1200 and about 1800 F. The hot-cell examination performed by BMI showed that there were no obvious effects of the irradiation on the specimen tested in helium. However, the specimen irradiated in the presence of C0/sub 2/ exhibited severe cladding-CO/sub 2/ reaction and possible central melting of the UO/sub 2/. Although comparisons between pre- and postirradiation data were difficult because of involved fabrication history of the specimens, the tests did further establish the fact that helium is a satisfactory coolant gas for stainless steel cladding material at a temperature of 1200 F. The data obtained from the specimen tested in the presence of C0/sub 2/ indicate that at temperatures in the range of 1600 to 1800 F Type 316 stainless steel is not compatible with C0/sub 2/. (auth)
Databáze:	OpenAIRE
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