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U.S. Department of Energy
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POST IRRADIATION EXAMINATION OF THE FIRST SAP CLAD UO$sub 2$ FUEL ELEMENTS IRRADIATED IN THE X-7 ORGANIC LOOP

Technical Report ·
OSTI ID:4829334
Seven fuel elements composing the first in-reactor test at Chalk River of SAP sheathing were irradiated in the X-7 organic loop. Activity, denoting a fuel failure, was detected in the loop coolant immediately after reactor start up; the fuel string was consequently removed from the loop nine hours later. Leak tests disclosed that five of the seven elements were defective. Inspection of the specimens showed essentially no change in element dimensions. Practically no organic fouling film was observed on the surface of the SAP cladding; organic coolant was found inside four of the defective elements. The appearance of the UO/sub 2/ fuel was consistent with the irradiation time and the heat ratings achieved during the test. (auth)
Research Organization:
Atomic Energy of Canada Ltd., Chalk River, Ontario (Canada)
NSA Number:
NSA-16-024235
OSTI ID:
4829334
Report Number(s):
AECL-1506; CRFD-1084; Exp-NRX-5806
Country of Publication:
Canada
Language:
English