Chemical aspects of pellet-cladding interaction in light water reactor fuel elements
Conference
·
OSTI ID:5274485
In contrast to the extensive literature on the mechanical aspects of pellet-cladding interaction (PCI) in light water reactor fuel elements, the chemical features of this phenomenon are so poorly understood that there is still disagreement concerning the chemical agent responsible. Since the earliest work by Rosenbaum, Davies and Pon, laboratory and in-reactor experiments designed to elucidate the mechanism of PCI fuel rod failures have concentrated almost exclusively on iodine. The assumption that this is the reponsible chemical agent is contained in models of PCI which have been constructed for incorporation into fuel performance codes. The evidence implicating iodine is circumstantial, being based primarily upon the volatility and significant fission yield of this element and on the microstructural similarity of the failed Zircaloy specimens exposed to iodine in laboratory stress corrosion cracking (SCC) tests to cladding failures by PCI.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5274485
- Report Number(s):
- LBL-13844; CONF-820609-7; ON: DE82010155
- Country of Publication:
- United States
- Language:
- English
Similar Records
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·
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·
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·
OSTI ID:5127487
Related Subjects
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FUEL PELLETS
FUEL-CLADDING INTERACTIONS
OXIDES
OXYGEN COMPOUNDS
PELLETS
PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTOR SAFETY
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TIN ALLOYS
URANIUM COMPOUNDS
URANIUM DIOXIDE
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WATER COOLED REACTORS
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