BASIC ASPECTS OF SWELLING IN DENSE LMFBR FUELS
The basic aspects of swelling in dense LMFBR fuels, alloys, carbides and nitrides, are analyzed as function of burn-up by use of a common reduced temperature scale. In addition to temperature and burn-up swelling depends on stress and the composition and as-fabricated structure of the fuel. Therefore the technological boundary conditions as defined by pin design and operation parameters have to be respected in order to limit the analysis. This leads to the concepts of "hot" fuels, "cool" fuels as well as free swelling and swelling under restraint. With increasing burn-up the in-pile kinetics responsible for swelling is affected by the ingrowth of fission damage and the increasing concentration of fission products. The resulting phenomena are not yet well understood and represent a field of present and future research.
Bibliographic Reference: ACTINIDES '85, AIX-EN-PROVENCE (FRANCE), SEPT. 2-6, 1985 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32430 ORA
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Record Number: 1989124061200 / Last updated on: 1987-01-01
Available languages: en