THE IRRADIATION OF SINTERED UO$sub 2$ IN 0.1 mm STAINLESS STEEL SHEATHS
Three uranium oxide specimens sheathed in 0.1-mm stainless steel were prepared for inclusion in the X-2-U test. Two of these specimens failed. The failure of specimen SB is suggested to be due to an inclusion in the airmelted stainless steel. The failure of specimen SD was attributed to the fabrication procedure which resulted in ridges running longitudinally along the sheath. Specimen SC, which remained intact throughout the test, showed no diametral increase after the first irradistion cycle but had a measurable increase after the second cycle. The other two specimens showed an increase after their first irradiation. The cracking pattern reproduced on the inner surface of the sheath made possible a measurement of the size of UO/sub 2/ fragments, and proved thst the pellete did not move axially within the sheath. The uranium oxide displayed only radial cracking. Circumferential cracks, usually associated with UO/sub 2/ irradiated at sufficient heat rating to produce grain growth, were not observed. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River, Ont.
- NSA Number:
- NSA-15-011699
- OSTI ID:
- 4072081
- Report Number(s):
- CRFD-964; AECL-1159
- Country of Publication:
- Canada
- Language:
- English
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