Rupture of Model 48Y UF sub 6 Cylinder and Release of Uranium Hexafluoride. Cylinder Overfill, March 12-13, 1986, Investigation of a Failed UF sub 6 Shipping Container

摘要

NUREG-1179, Volume 1, reported on the rupture of a Model 48Y uranium hexafluoride (UF6) cylinder and the subsequent release of UF6. At the time of publication, a detailed metallurgical examination of the damaged cylinder was under way and results were not available. Subsequent to the publication of Volume 1, a second incident occurred at the Sequoyah Fuels Corporation facility. On March 13, 1986, a Model 48X cylinder was overfilled during a special one-time draining procedure; however, no release of UF6 occurred. An Augmented Investigation Team investigated the second incident. The report, NUREG-1179, Volume 2, presents the findings made by the Augmented Investigation Team of the March 13 incident and the report of the detailed metallurgical examination conducted by Battelle Columbus Division of the cylinder damaged on January 4, 1986.