The Idaho Chemical Processing Plant Product Denitrator Upgrade [report]

Not Given Author
1982 unpublished
The upgrade and redesign of a fluidized-bed denitrator for production of uranium trioxide from uranyl nitrate solution is discussed. The success of the project in improving process efficiency and personnel safety is also addressed based on subsequent operation. ii SUMMARY The uranium product denitrator at the Idaho Chemical Processing Plant has had serious operating problems since 1970, including inadequate contamination control, fluidized bed caking, frequent bed heater failure, product
more » ... ure, product overflow plugging, and poor feed control. These problems were minimized through selective redesign and upgrade of the process equipment as part of a process upgrade program completed in March 1981. Following startup and testing of the rebuilt product denitrator, 1044 kg of enriched uranium was processed in three weeks while demonstrating greater reliability, ease of operation, and improved contamination control. To maximize personnel safety in the future, the denitrator vessel should be made critically safe by geometry and process instrumentation isolated from the process for semi-remote operation. iii iv CONTENTS Page ABSTRACT ii SUMMARY Iii ACKNOWLEDGMENTS Iv
doi:10.2172/1057488 fatcat:lbb366zjqnaz3ozvw7x35rsoie