The loosened screws were identified on two cameras produced in the same lot of 16 cameras manufactured in July 1994. For that lot of cameras, Amersham Corporation believes that the four screws holding the locking assembly to the rear plate were not torqued to the required specification. If the screws loosen sufficiently, the source could be pulled past the fully shielded position. Although the problem was noted only in one lot, Amersham Corporation is planning to send an information notice to all users of the cameras advising them to assure that the locking mechanism is secure, and re-emphasizing the necessity for performing daily, quarterly, and annual inspections of the equipment. There is a significant amount of testing to be completed in Mode 3 before initial criticality, which TVA is currently scheduling for January 15, 1996.
Loading is currently in process and fuel is now in the first cask.
The licensee will load a total of three casks in this current series.