IRRADIATION BEHAVIOUR OF SOLID AND HOLLOW U$sub 3$Si FUEL ELEMENTS: RESULTS TO 15,000 MWd/tonne U.
Technical Report
·
OSTI ID:4767571
U{sub 3}Si fuel elements clad in zirconium alloy sheaths have been irradiated to burnups close to 15,000 MWd/tonne U in pressurized water at 220 degC, 98 bars. The results show that the external swelling can be controlled by incorporating free volume in the element. The dimensional stability of such elements is adequate to permit their use in power reactor fuel bundles. A diameter increase of 1.2% had occurred in an element initially containing 12.8% total free volume, after a burnup of 14,700 MWd/tonne U. There was no change in diameter between burnups of 5200 and 14,700 MWd/tonne. Elements containing 3% total free volume had increased in diameter about 2.5% at 2000 MWd/tonne U compared to 0.2% at 9500 MWd/tonne U for elements containing 22% total free volume. The observed swelling in the U{sub 3}Si is discussed in terms of possible mechanisms.
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River (Ontario) Canada. Chalk River Nuclear Labs., Fuel Materials Branch
- NSA Number:
- NSA-23-047338
- OSTI ID:
- 4767571
- Report Number(s):
- AECL--3111; EXP-NRX--52233
- Country of Publication:
- Canada
- Language:
- English
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Tue Jul 15 00:00:00 EDT 1969
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Wed May 01 00:00:00 EDT 1968
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OSTI ID:4482407
Related Subjects
CYLINDERS
EXPANSION
FUEL CANS
FUEL ELEMENTS
N38700* --Reactor Components
Fuels & Accessories
NEUTRONS
NEUTRONS/effects on swelling of Zircaloy and zirconium alloy--nickel alloy clad hollow and solid uranium silicide (U$sub 3$Si) cylinder shaped rod type fuel elements
RADIATION EFFECTS
REACTOR FUEL ELEMENTS/radiation effects on swelling of Zircaloy and zirconium alloy--nickel alloy clad uranium silicide (U$sub 3$Si) cylinder shaped rod type
measurement of neutron
REACTORS
RODS
SILICIDES
SWELLING
URANIUM
URANIUM SILICIDES/radiation effects on swelling of hollow and solid cylinder shaped clad fuel elements of
measurement of neutron
ZIRCALOY
ZIRCONIUM ALLOYS
EXPANSION
FUEL CANS
FUEL ELEMENTS
N38700* --Reactor Components
Fuels & Accessories
NEUTRONS
NEUTRONS/effects on swelling of Zircaloy and zirconium alloy--nickel alloy clad hollow and solid uranium silicide (U$sub 3$Si) cylinder shaped rod type fuel elements
RADIATION EFFECTS
REACTOR FUEL ELEMENTS/radiation effects on swelling of Zircaloy and zirconium alloy--nickel alloy clad uranium silicide (U$sub 3$Si) cylinder shaped rod type
measurement of neutron
REACTORS
RODS
SILICIDES
SWELLING
URANIUM
URANIUM SILICIDES/radiation effects on swelling of hollow and solid cylinder shaped clad fuel elements of
measurement of neutron
ZIRCALOY
ZIRCONIUM ALLOYS