Number Date Number Date 1. No special training requirements have been identified for any documents issued with this change notice. Retrofits were issued by the manufacturers to correct the problem. In addition, NRC became aware that the Amersham Model 660 Series radiography exposure device had failed tests to meet the hypothetical conditions required in 10 CFR Part 71. The Certificate of Compliance for this exposure device was amended to provide compensatory measures for licensees to follow during transport, and to restrict use of Amersham Model 660 Series exposure devices manufactured after November 17, 1997.
Inspections are necessary to verify licensee compliance.