Method for dealing with uncertainty in fuel design

It is argued that attention should be paid to the uncertainty caused by the fuzziness in material properties for a probabilistic fuel design. A method for dealing with the uncertainty is proposed on the basis of fuzzy sets theory. The method uses accepted deterministic fuel models as transfer functions to evaluate the effect of input parameter variation on system response. Monte Carlo approach is applied to simulate a variation process of fuzzy input parameters to the transfer functions, as well as probabilistic input parameters with randomness in fuel fabrication. (author)