ENS 56655

v t e ENS Event
07:00 Aug 1, 2023
Title	Damaged Moisture Density Gauge
Event Description	The following report was received by the California Department of Public Health , Radiation Health Branch (RHB) via email: On 08/01/23, a portable moisture density gauge containing radioactive materials (Humboldt Model 5001C082, Serial number HIS 1767, containing 10 mCi Cs-137 and 40 mCi Am-241/Be) was run over by a piece of heavy equipment, on a construction site. The licensee cordoned off the area where the gauge was damaged and contacted Pacific Nuclear Technology (PNT) for assistance. The top shell of the gauge was crushed and found in several pieces, the source rod was bent, and there was no damage to the area where the Cs-137 source was contained. PNT was able to place the rod containing Cs-137 into its original shielding position. The Am-241/Be source was found undamaged in its original position attached to the base. PNT had surveyed the area using a Ludlum model 3, 44-9 detector, and no radiation levels above background were detected. The gauge was placed in the undamaged transit case (transportation index measured 0.2 mR/hr) and transported to the PNT facility where the gauge was leak tested. The leak test performed on the damaged gauge did not indicate any contamination. Currently, the gauge is in storage awaiting approval for disposal. RHB will be following up on this investigation. California incident number: 080123

ENS 56655 +/-
Where
B. Hillebrandt Soils Testing, Inc. Alamo, California (NRC Region 4)
License number:	6680-1
Organization:	California Radiation Control Prgm
Reporting

Agreement State
Time - Person (Reporting Time:+61.15 h2.548 days <br />0.364 weeks <br />0.0838 months <br />)
Opened:	Robert Greger 20:09 Aug 3, 2023
NRC Officer:	Bill Gott
Last Updated:	Aug 3, 2023
56655 - NRC Website
v • d • e

v t e Emergency Notification System
B. Hillebrandt Soils Testing, Inc. with Agreement State
WEEKMONTHYEAR2023-08-01T07:00:00 [Table view]
[ENS list for B. Hillebrandt Soils Testing, Inc.]

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