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U.S. Department of Energy
Office of Scientific and Technical Information

Analysis of the PBF in-pile large-break LOCA test results with FRAP-T6/BALON-2. [PWR]

Conference ·
OSTI ID:5331370
A series of four, large-break loss-of-coolant accident fuel behavior experiments have been performed in the Power Burst Facility (PBF) at the Idaho Engineering Laboratory. These experiments have been analyzed by using out-of-pile data to understand the phenomenology of zircaloy cladding ballooning and to construct a mechanistic computer code to describe cladding deformation and failure. The code was then used to quantify the influence of rod internal pressure, cladding heatup, and cladding circumferential temperature differences on ballooning and rupture for fresh and irradiated test rods in the PBF. The analysis indicates that the timing and magnitude of cladding circumferential temperature differences are the primary controlling parameters. Both the experimental and the analytical results support the hypothesis that previously irradiated rods exhibit greater cladding strain at failure than do fresh rods because of small local temperature differences within the cladding.
Research Organization:
EG and G Idaho, Inc., Idaho Falls (USA)
DOE Contract Number:
AC07-76ID01570
OSTI ID:
5331370
Report Number(s):
EGG-M-01782; CONF-820604-11; ON: DE82018765
Country of Publication:
United States
Language:
English