Evaluation and Demonstration of Methods for Improved Nuclear-Fuel Utilization. Fifth Semi-Annual Progress Report, January 1-June 30, 1982 (PWR; Combustion Engineering Inc)

摘要

The objective of this Department of Energy sponsored program is to demonstrate increased burnup for combustion Engineering 16 x 16 fuel. A demonstration of this improvement is in progress for the Arkansas Nuclear One Unit 2 (ANO-2) reactor located near Russellville, Arkansas. The extended burnup objective will be realized by demonstrating advanced fuel designs which should be capable of increasing batch average discharge exposure to 53 GWD/T and by demonstrating that the current fuel is capable of increasing batch average discharge exposure to 43 GWD/T. Analyses are included to assure that the extended burnup objective can be realized with both conventional and low leakage fuel management schemes. Advanced design fuel rods are experiencing their first exposure cycle during Reactor Cycle 2, which is scheduled for shutdown in August 1982. Current design 16 x 16 fuel assemblies are now in their second exposure cycle. One of these assemblies is scheduled to be irradiated for a fourth exposure cycle. This report presents fuel management analyses for transitions to extended burnup for ANO-2, and investigations of the adequacy of power distribution measurements at extended burnup. (ERA citation 08:029599)