Journal article
Local Fission Gas Release and Swelling in Water Reactor Fuel during Slow Power Transients
In
Journal of Nuclear Materials
—
1985, Volume 131, Issue 2-3, pp. 162-171
Abstract
Gas release and fuel swelling caused by a power increase in a water reactor fuel (burn-up 2.7–4.5% FIMA) is described. At a bump terminal level of about 400 W/cm (local value) gas release was 25–40%. The formation of gas bubbles on grain boundaries and their degree of interlinkage are the two factors that determine the level of fission gas release during a power bump.
Release begins when gas bubbles on grain boundaries start o interlink. This occurred at r/r0 ~ 0.75. Release tunnels were fully developed at r/r0 ~ 0.55 with the result that gas release was 60–70% at this position.
| Language: | English |
|---|---|
| Year: | 1985 |
| Pages: | 162-171 |
| ISSN: | 18734820 and 00223115 |
| Types: | Journal article |
| DOI: | 10.1016/0022-3115(85)90455-6 |
| ORCIDs: | Mogensen, Mogens Bjerg |
