Evaluation of Sl-1 Poison Strips

A Retrospective Analysis of Aspects of the Alpr (Sl-1) Design

“…The bowing reflects the forces of this volume expansion between the fusion welds which defined the regions of constraint. V^'/ Personnel of Combustion Engineering, Inc., have reported results of various tests performed on samples of poison strips, including, among others: (28) (1) metallographic inspection both of irradiated and of unirradiated samples;…”

“…Some summary remarks and conclusions of particular interest are: (28) (1) "A dependency of corrosion rate on boron burn-up was found by post-irradiation corrosion tests. The section of one of the recovered poison strips taken from the high flux end of the remnant exhibited a calculated penetration after 42 days of test greater than 10 times that of either an unirradiated sample or sections taken from lower flux regions of the same recovered poison strip.…”