Event Notification Report for December 29, 2020
U.S. Nuclear Regulatory Commission
EVENT REPORTS FOR
12/28/2020 - 12/29/2020
Event Number: 55042
Rep Org: NC DIV OF RADIATION PROTECTION
Licensee: Froehling and Robertson, Inc.
City: Charlotte State: NC
License #: 060-0353-4
NRC Notified By: David Crowley
HQ OPS Officer: Andrew Waugh
Notification Date: 12/21/2020
Notification Time: 16:27 [ET]
Event Date: 12/19/2020
Event Time: 11:41 [EST]
Last Update Date: 12/21/2020
Emergency Class: Non Emergency
10 CFR Section:
ELISE BURKET (R1DO)
DAMAGED NUCLEAR GAUGE
The following is a summary of information that was received via email:
At 1141 EST, on 12/19/20, an authorized user (AU) for the licensee determined that one of their portable nuclear gauges was damaged. The AU felt the index rod loosen and then break off when he went to retrieve the gauge from its transport case. The gauge had been used the day before at a jobsite and did not experience any accidents. The gauge had not been dropped and was in the possession of the AU at all times during this event. The source remained in the shielded position within the gauge throughout this event.
The AU contacted the radiation safety officer (RSO) and the gauge was transported to an authorized storage location. The RSO took measurements of the outer transport box surface (1 mR/hr) and the gauge surface (5 mR/hr). The gauge was placed into an authorized storage shed and readings at the surface of the shed were non-distinguishable from background.
The gauge was a Troxler 3440 (s/n: 16938) with an 8 mCi Cs-137 source and a 40 mCi Am-241/Be source.
NC event number: NC200023
Page Last Reviewed/Updated Tuesday, December 29, 2020