Event Notification Report for March 02, 2023

AGREEMENT STATE REPORT - STUCK SHUTTER

The following was received from the Texas Department of State Health Services (the Agency) via email:

"On February 22, 2023, the Agency was notified by the licensee's service company that the shutter on a Vega SH-F2B was found stuck in the open position during routine testing. Open is the normal operating position. The gauge contains a 200 millicurie (original activity) cesium-137 source. The gauge does not present an exposure risk to members of the general public or plant workers. The manufacturer has been contacted to conduct the repairs to the gauge. Additional information will be provided as it is received in accordance with SA-300."

Texas Incident Number: I-9992

AGREEMENT STATE REPORT - LEAKING SOURCE

The following information was obtained from the Ohio Bureau of Radiological Protection via email:

"On 2/17/2023, the licensee's [Alternate Radiation Safety Officer] ARSO entered the radioactive material storage room where a technician was opening the housing on a device containing a Kr-85 source.

"Upon the initial attempt to withdraw a bolt of the device housing, an area radiation monitor began to alarm. The ARSO and the technician took a second reading with a Victoreen 451 [radiation detector] to confirm that it was Kr-85 gas leakage and exited the room. A radiation survey meter indicated that there was no contamination on either person. Removable swipes of the area outside of the room also were indicative of no contamination. The entry door was sealed and access restricted until additional information was available.

"Follow-up entries were completed by the ARSO on 2/20/2023 and 2/21/2023 using 1 meter by 1 meter grids to identify specific areas of testing for removable contamination. Radiation and contamination survey results identified no readings above background. The licensee did not report results of any personnel testing or estimates of uptake.

"The licensee is investigating the cause of the Kr-85 leak. [Ohio Department of Health] ODH will travel to the site to conduct an investigation on 02/28/2023."

Ohio Item Number: OH230003

AGREEMENT STATE REPORT - LOST/MISSING GAUGE

The following was received from the state of South Carolina via email:

"The South Carolina Department of Health and Environmental Control was notified on 02/23/23 at 1546 [EST] via telephone that a Humboldt Model 5001 device (serial number 4686) portable moisture density gauge was lost or missing. The Humboldt Model 5001 device contains a maximum activity of 11 millicuries (407 MBq) of Cs-137 and 44 millicuries (1628 MBq) of Am-241:Be. The licensee is reporting that the Humboldt Model 5001 device was lost or missing while in transit via a common carrier. The Humboldt Model 5001 device was picked up by the common carrier at a temporary jobsite in South Carolina on 01/18/23 and was intended to be delivered to the manufacturer in Raleigh, NC. The licensee is reporting that the Humboldt Model 5001 device was delivered to a common carrier facility in Durham, NC on 01/19/23. The licensee is reporting that the Humboldt Model 5001 device has not been delivered to the intended destination and the licensee is reporting that the common carrier has indicated that the shipment cannot be located.

"This event is under investigation by the South Carolina Department of Health and Environmental Control."

* * * UPDATE ON 2/24/23 AT 1112 EST FROM SOUTH CAROLINA DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL TO KAREN COTTON * * *

"The South Carolina Department of Health and Environmental Control was notified on 02/24/23, at 1056 EST via telephone that the Humboldt Model 5001 device (serial number 4686) has been found by the common carrier and retrieved by the licensee from the common carrier facility in Durham, NC.

"This event is still under investigation by the South Carolina Department of Health and Environmental Control."

Notified R1DO (Carfang), NMSS Events Notification, and ILTAB

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