The following is a summary of a phone call from the state of Nevada:
A plant manager for the HC Companies Inc. was performing a walkthrough when three NDC-102 thickness gauges were discovered. The manager was familiar with the gauges from a different site, but this site did not have any registered, nor does this site have a license for any material. The gauges, potentially only requiring a general license, were moved and the corporate safety group notified in order to secure them. When the safety group arrived, one of the gauges was missing (s/n: 2690; source: 150 mCi of Am-241).
Item Number: NV210004
- * * UPDATE ON 4/23/2021 AT 1720 EDT FROM COREY CREVELING TO THOMAS KENDZIA * * *
The state of Nevada sent a picture of the missing source via email:
The picture confirms the the previous information and the date of the radiological strength was 1/92.
Notified: R4DO (Azua) (email), NMSS Event Notifications (email), and ILTAB (email).
THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than
IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as
moisture density gauges or thickness
gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to
http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf