Download or read book Criticality Aspects of the Revised Zirconium Dissolution System at the Idaho Chemical Processing Plant written by W. G. Morrison and published by . This book was released on 1968 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soluble neutron poison has been used in a pioneering achievement at the Idaho Chemical Processing Plant as the primary nuclear safety control for routine processing of irradiated reactor fuel. Extensive calculations based on carefully controlled experiments have established concentration limits for the soluble boric acid poison. Special safety circuits and rigidly enforced operating procedures have been used to maintain nuclear safety at a level commensurate with the high standards used throughout the plant. This innovation has permitted safe use of large non-geometrically safe dissolution equipment for semi-continuous processing of enriched uranium-zirconium fuel with a resultant ten-fold increase in zirconium fuel processing capacity.