The following information was received from the
Wisconsin Department of Health Services (the Department) via email:
On November 06, 2023, at 1408 CST, the Department received a notification from the licensee that a Peco Controls Corporation gauge (serial number 5450LA) containing 100 mCi of Am-241 had been determined to be missing while conducting inventory of gauges in storage. This is all the information that is known at this time. The Department will follow up and provide additional information as it becomes available.
Wisconsin Event Report ID No.: WI230021
- * * UPDATE ON 11/10/23 AT 1605 EST FROM MEGAN SHOBER TO ERIC SIMPSON * * *
The following update was received from the Wisconsin Department of Health Services (the Department) via phone and email:
On November 10, 2023, the licensee determined that an additional four Peco Controls Gamma 101P gauges were missing (serial numbers 0550LX, 9145LV, 9142LV, and 9580LV). Each gauge contained 300 millicuries of Americium-241. Department inspectors were onsite and physically verified the remainder of the licensee's inventory.
In addition, the model number of the gauge declared missing on November 6, 2023 was confirmed to be a Gamma 101P.
Notified R3DO (Ruiz), NMSS Event Notifications, ILTAB, and CNSC via 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