Fission Gas Release from Fuel at High Burnup
Title | Fission Gas Release from Fuel at High Burnup PDF eBook |
Author | Ralph O. Meyer |
Publisher | |
Pages | 78 |
Release | 1978 |
Genre | Fission gases |
ISBN |
Fission Gas Release from High Burnup ThO/sub 2/ and ThO/sub 2/-UO/sub 2/ Fuels Irradiated at Low Temperature. (LWBR/AWBA Development Program). [LWBR, Below 2700/sup 0/F].
Title | Fission Gas Release from High Burnup ThO/sub 2/ and ThO/sub 2/-UO/sub 2/ Fuels Irradiated at Low Temperature. (LWBR/AWBA Development Program). [LWBR, Below 2700/sup 0/F]. PDF eBook |
Author | |
Publisher | |
Pages | |
Release | 1982 |
Genre | |
ISBN |
Fission gas release data are presented for five fuel rods irradiated at low fuel temperature (below 2700/sup 0/F) with burnups up to 90,000 MWD/MTM. Four of these rods contained ThO/sub 2/-UO/sub 2/ (33.6 weight percent UO/sub 2/) fuel pellets; the fifth rod contained ThO/sub 2/ pellets. These data supplement fission gas release information previously reported for 54 rods containing ThO/sub 2/-UO/sub 2/ and ThO/sub 2/ fuel, some of which experienced fuel temperaures up to 5000/sup 0/F and burnups to 56,000 MWD/MTM. These new data suggest that at burnups exceeding about 80,000 MWD/MTM a sharp increase in fission gas release occurs, possibly caused by microstructural changes in the fuel. This is similar to the behavior of UO/sub 2/ except that the increase occurs in UO/sub 2/ at lower burnup (approximately 40,000 MWD/MTM). The fission gas release calculational model previously reported has been modified to account for the observed increase in the low temperature component. The revised model provides a good best estimate of all the fission gas release data.
Prediction of Fission Gas Release from High Burnup Oxide Fuel
Title | Prediction of Fission Gas Release from High Burnup Oxide Fuel PDF eBook |
Author | |
Publisher | |
Pages | 0 |
Release | 1980 |
Genre | |
ISBN |
Prediction of Fission Gas Release from High Burnup Oxide Fuel
Title | Prediction of Fission Gas Release from High Burnup Oxide Fuel PDF eBook |
Author | Atomic Energy of Canada Limited |
Publisher | Chalk River, Ont. : Chalk River Nuclear Laboratories |
Pages | 11 |
Release | 1979 |
Genre | |
ISBN |
Fission-gas Release from Uranium Nitride at High Fission-rate Density
Title | Fission-gas Release from Uranium Nitride at High Fission-rate Density PDF eBook |
Author | Michael B. Weinstein |
Publisher | |
Pages | 68 |
Release | 1973 |
Genre | Fission gases |
ISBN |
A sweep gas facility has been used to measure the release rates of radioactive fission gases from small UN specimens irradiated to 8-percent burnup at high fission-rate densities. The measured release rates have been correlated with an equation whose terms correspond to direct recoil release, fission-enhanced diffusion, and atomic diffusion (a function of temperature). Release rates were found to increase linearly with burnups between 1.5 and 8 percent. Pore migration was observed after operation at 1550 K to over 6 percent burnup.
The Behavior of Fission-Gas in Fuels
Title | The Behavior of Fission-Gas in Fuels PDF eBook |
Author | |
Publisher | |
Pages | 32 |
Release | 1965 |
Genre | |
ISBN |
Fission Gas Behaviour in Water Reactor Fuels
Title | Fission Gas Behaviour in Water Reactor Fuels PDF eBook |
Author | |
Publisher | Paris, France : Nuclear Energy Agency, Organisation for Economic Co-operation and Development |
Pages | 572 |
Release | 2002 |
Genre | Science |
ISBN |
Communicates the results of an international seminar which reviewed recent progress in the field of fission gas behaviour in light water reactor fuel and sought to improve the models used in computer codes predicting fission gas release. State-of-the-art knowledge is presented for both uranium-oxide and mixed-oxide fuels loaded in water reactors.