ENS 56646

v t e ENS Event
13:30 Jul 31, 2023
Title	Troxler Moisture Density Gauge Inadvertently Bumped by Truck
Event Description	The following summary information was provided by the licensee via telephone: On 7/31/2023 at about 0730 MDT, employees of the City of Great Falls were standardizing a Troxler moisture density gauge (contained 9 millicuries of cesium-137 and 44 millicuries of americium-241) with the gauge on an asphalt lot and the source in its cage; as per standard practice. A loader truck inadvertently hit the gauge but was halted before it ran over the gauge. Some plastic on the gauge was damaged. The licensee halted operations and restricted access. Subsequently, radiation levels of 0.294 millirem per hour at 1 foot and 0.004 millirem per hour at 4 feet were measured, which were essentially background levels. No overexposure or other personnel injury were reported.

ENS 56646 +/-
Where
City Of Great Falls Great Falls, Montana (NRC Region 4)
License number:	25-15247-01
Organization:	City Of Great Falls
Reporting

10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure
Time - Person (Reporting Time:+-1.48 h-0.0617 days <br />-0.00881 weeks <br />-0.00203 months <br />)
Opened:	Matt Troud 12:01 Jul 31, 2023
NRC Officer:	John Russell
Last Updated:	Jul 31, 2023
56646 - NRC Website
v • d • e

v t e Emergency Notification System
City Of Great Falls with 10 CFR 30.50(b)(2)
WEEKMONTHYEAR2023-07-31T13:30:00 [Table view]
[ENS list for City Of Great Falls]

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