Resolution of Generic Safety Issues: NMSS-0010. Troxler Gauge Source Rod Weld Failures (Rev. 1) ( NUREG-0933, Main Report with Supplements 1–34 )
This issue was identified1709 by NMSS after it was reported in June 1997 that the source from a Troxler moisture density gauge broke off the source rod and was left at a temporary job site. Prior to this event, there had been 6 known disconnects and 57 additional devices with cracked welds since 1996, and NRC Information Notice 96-521713 had been issued to alert portable gauge licensees and vendors to the potential for cracks to develop in the insertion rod of Troxler Model 3400 portable moisture density gauges. If not detected early, the cracks may propagate, eventually leading to complete failure of the insertion rod and release of the contained radioactive material.