This issue was identified[1] by NMSS after three reports of radiography source disconnects involving drive
cable breaks in Amersham equipment were reported. IN 97-91[2] was issued to alert all industrial radiography licensees to potential failures of control (drive) cables used on Amersham Model 660 Posilock radiography systems.
The issue was given a high priority ranking and resolution was pursued.[3] The findings, conclusions, and recommendations of a special inspection team were published in NUREG-1631.[4] Supplement 1 to Information
Notice 97-91[5] was issued to inform licensees of the report which was later presented at a meeting of the American Society of Non-Destructive Testing in October 1998. It was concluded that the failures were caused by a combination of wear, corrosion, and lack of lubrication. As of October 1998, all of the recommendations were
implemented or were scheduled to be implemented. Thus the issue was resolved.[6]
[1] Memorandum for J. Craig from F. Combs, "Submittal of New Generic Issues for Tracking in the Generic Issues Management and Control System (GIMCS)," June 4, 1998. [9806090180]
[2] Information Notice 97-91, "Recent Failures of Control Cables Used on Amersham Model 660 Posilock Radiography Systems," U.S. Nuclear Regulatory Commission, December 31, 1997 [ML031050007], (Supplement 1) August 10, 1998. [ML031050002]
[3] Memorandum for J. Craig from F. Combs, "Submittal of New Generic Issues for Tracking in the Generic Issues Management and Control System (GIMCS)," June 4, 1998. [9806090180]
[4] NUREG-1631, "Source Disconnects Resulting from Radiography Drive Cable Failures," U.S. Nuclear Regulatory Commission, June 1998.
[5] Information Notice 97-91, "Recent Failures of Control Cables Used on Amersham Model 660 Posilock Radiography Systems," U.S. Nuclear Regulatory Commission, December 31, 1997 [ML031050007], (Supplement 1) August 10, 1998. [ML031050002]
[6] Memorandum for J. Craig from F. Combs, "Closure of NMSS Generic Issues," October 13, 1998. [9810160185]
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