ENS 45845

v t e ENS Event
20:10 Apr 15, 2010
Title	Damaged Troxler Moisture Density
Event Description	At 1410 MST on 4/15/10, a gauge operator was conducting a density reading near a culvert on Highway 28 in Hot Springs, MT. After placing the gauge at the target areas, the operator walked about twenty feet away. While he was away, a compactor that was compacting the road bed, slipped off the road near the culvert. When the compactor operator was backing up to get back on the road, he backed over the density gauge. The gauge operator immediately secured the area and contacted the Radiation Safety Officer (RSO). The RSO visually inspected the gauge and determined that both sources were retracted into the shielded position and appeared to be intact. He then surveyed the area and determined that no radiation release had occurred. The RSO conducted a wipe test and determined that no source leakage occurred. There were no personnel overexposures during this event. The gauge is currently in storage at the Montana Department of Transportation awaiting transport to Troxler for disposal. The gauge was a model 3440, serial number 36152. It contained a Cs-137 source (serial number 77-3287, 8 mCi on 11/8/04) and an Am/Be-241 source (serial number 78-1047, 40 mCi on 10/13/04).

ENS 45845 +/-
Where
Montana Department Of Transportation Hot Springs, Montana (NRC Region 4)
License number:	25-11498-01
Organization:	Montana Department Of Transportatio
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+17.18 h0.716 days <br />0.102 weeks <br />0.0235 months <br />)
Opened:	Rex Hoy 13:21 Apr 16, 2010
NRC Officer:	Howie Crouch
Last Updated:	Apr 16, 2010
45845 - NRC Website
v • d • e

v t e Emergency Notification System
Montana Department Of Transportation with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2025-08-12T13:30:00 [Table view]
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