Event Notification Report for November 07, 2023

AGREEMENT STATE - STOLEN SOURCE

The following information was provided by the Wisconsin Department of Health Services (the Department) via email and telephone:

"On October 30, 2023, at 1830 CDT, the Department received a notification from the licensee that a CPN MC1DRP gauge containing up to 10 mCi of Cesium-137 and 50 mCi of Americium-241 had been out of their control since 1435 CDT when the vehicle containing the gauge was stolen. Local law enforcement has been notified. The Department will monitor and update."

Event Report Number: WI230019

* * * UPDATE FROM MEGAN SHOBER TO DAN LIVERMORE BY EMAIL ON 10/31/2023 * * *

"The missing gauge was recovered around 0800 [CDT] on October 31, 2023 and is now in the custody of the licensee. The gauge had no visual damage. The Department will follow up with the licensee."

Notified R3DO (Dickson), ILTAB and NMSS Events notification by 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

AGREEMENT STATE REPORT - BROKEN CABLE ON EXPOSURE DEVICE

The following information was provided by the Texas Department of State Health Services via email:

"On October 30, 2023, the licensee reported that on October 27, 2023, they had an industrial radiography source disconnect when the drive cable broke at the connector while the crew was working at a temporary job site. The exposure device was an INC IR-100 [containing a 92.1 curie Iridium-192 source]. The source was retrieved and secured in the exposure device by trained personnel. Self reading pocket dosimeters for the radiographers and retriever involved indicate there were no overexposures as a result of this event. Dosimetry badges are being sent for processing. The licensee is re-inspecting and re-servicing all of its crank and cable assemblies. An investigation into this event is ongoing. More information will be provided as it is obtained in accordance with SA-300."

Texas Incident Number: 10063
Texas NMED Number: TX230049

DEGRADED CONDITION - TWO STEAM GENERATOR TUBE FAILURES IDENTIFIED

The following information was provided by the licensee via email:

"At 1033 CST on November 5, 2023, while in a refueling outage, it was determined that Waterford Steam Electric Station, Unit 3, did not meet the performance criteria for steam generator structural integrity in accordance with Technical Specification 6.5.9.b.1, Steam Generator Program, due to two tube failures in the number 1 steam generator. The condition was identified during performance of in-situ pressure testing.

"The affected tubes will be plugged.

"The plant is currently stable with all fuel in the spent fuel pool. Decay heat is being removed by normal spent fuel cooling system operation.

"This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(ii)(A) as a degraded condition.

"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."