ENS 53446

v t e ENS Event
18:24 Jan 15, 2026
Title	Damaged Moisture Density Gauge
Event Description	The licensee's gauge operator was preparing to sample some work being done by a construction company when the company's road grader began backing into his sample area. The operator attempted to wave off the grader but he was in the grader operator's blind spot. The grader struck the gauge side and damaged the housing. The source rod was retracted so the sources were in their shielded position. The RSO [Radiation Safety Officer] was contacted and performed an area survey and a survey on the gauge. There were no abnormal readings. The gauge was swipe tested and the licensee has sent the swipe off for analysis. No overexposures were reported. The gauge was a Troxler model 3440 which contained a 9 mCi Cs-137 source and a 44 mCi Am-241 source. The gauge is currently in secure storage at the licensee's facility. Once the swipe tests are analyzed, the disposition of the gauge will be determined. The site of the incident was Ann Arbor, MI.

ENS 53446 +/-
Where
Cti And Associates Novi, Michigan (NRC Region 3)
License number:	21-17007-01
Organization:	Cti And Associates
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+-66719.82 h-2,779.993 days <br />-397.142 weeks <br />-91.393 months <br />)
Opened:	Tim Moore 17:35 Jun 6, 2018
NRC Officer:	Howie Crouch
Last Updated:	Jun 6, 2018
53446 - NRC Website
v • d • e

v t e Emergency Notification System
Cti And Associates with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2026-01-05T18:49:00 [Table view]
[ENS list for Cti And Associates]

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