The following summary was received via e-mail from the
Oklahoma Department of Radiation Management [the department]:
On October 18, 2021 at 13:00
CDT, the licensee contacted the department to inform them that they had discovered a density
gauge Model RLL 1, Sn 209689a,
Cs-137 source, 0.9 millicuries as manufactured, in an incoming load of scrap. The date of manufacture was June 2008 and does not appear to be designed to have a shutter. Contact, no shutter, open side readings were 33 mR/hour while closed side readings at 3 feet were less than 1 mR/hour. The
gauge had gotten past gate monitors but triggered an alarm on the conveyer belt. The licensee contacted the vendor who told them that the
gauge was sold as a general license in
Texas to be used for level detection on a dredge. The
gauge is currently being held in a drum onsite under lock and key.