Modes of failure of fast reactor fuel pins irradiated under loss-of-coolant-flow conditions. [LMFBR]

Journal Article · Sat Dec 01 00:00:00 EST 1979 · Nucl. Technol.; (United States)

OSTI ID:5512553

Kwast, H

Capsule irradiations have been performed on single fast reactor fuel pins in a sodium environment under simulated loss-of-coolant-flow conditions. The main objectives were to determine the thresholds, modes, and mechanisms of fuel pin failures. The parameters were canning temperature and internal pin pressure. The loss-of-coolant-flow condition was simulated by adjusting midwall canning temperatures of approx. 850 and approx. 1000/sup 0/C. The results indicated that the creep rupture is the predominant failure mechanism at canning temperatures of 1000/sup 0/C and gas pressures of above 40 bars. The failure mechanism of fuel pins tested at approx. 850/sup 0/C and gas pressures lower than 60 bars is probably cladding strain due to differential expansion of fuel and canning.

• Research Organization: Netherlands Energy Research Foundation ECN, Petten
• OSTI ID: 5512553
• Journal Information: Nucl. Technol.; (United States), Vol. 46:2
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
FUEL ELEMENT FAILURE
SIMULATION
LMFBR TYPE REACTORS
LOSS OF FLOW
PRESSURE DEPENDENCE
TEMPERATURE DEPENDENCE
ACCIDENTS
BREEDER REACTORS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
LIQUID METAL COOLED REACTORS
REACTOR ACCIDENTS
REACTORS
220900* - Nuclear Reactor Technology- Reactor Safety
210500 - Power Reactors
Breeding