for discussions regarding NTS fuel temperature histories; and to M. Peehs of Kraftwerk Union, B. Teer of Transnuclear, J. D. Rollins of GNS, and C. J. Ealing of GEC Energy Systems for pertinent discussions. The authors also acknowledge the following PNL personnel: B. M. Cole for providing fuel inventory assessments; R. A. McCann for assessing fuel temperature behavior in dry storage; R. L. Clark for calculation assistance; R. D. Nelson for comments on the draft; and S. K. Edler for editing and publication assistance.