BURNUP CREDIT ISSUES IN TRANSPORTATION AND STORAGE•

Reliance on the reduced reactivity of spent fuel for criticality control during transportation and storage is referred to as bumup credit. This concept has attracted international interest and is being actively pursued in the United States in the development of a new generation of transport casks. An overview of the U.S. experience in developing a methodology to implement bumup credit in an integrated approach to transport cask design is presented in this paper. Specifically, technical issues related to the analysis, validation and implementation of bumup credit are identified and discussed.