Event Notification Report for December 17, 2025

AGREEMENT STATE REPORT - LOST SOURCE

The following information was provided by the Illinois Emergency Management Agency (Agency) via phone and email:

"The Agency was contacted by GE Healthcare to report a CardioGen Rb-82 generator had been lost in transit. Tracking information shows the 65-pound Yellow-II package arrived at the [common carrier] hub in Memphis, TN on December 4, 2025, but shows no movement thereafter. The intended destination was Cardiology Partners in Lake Worth, FL. The carrier's hazardous goods team has been contacted and reports they are unable to locate the package. The Florida recipient has confirmed that the package did not arrive. There is no indication the generator was intentionally diverted or has been separated from its packaging. At the time of reporting, the generator is estimated to contain 89.43 mCi of Sr-82 and 76.55 mCi of Sr-85."

IL Event #: IL250049

* * * UPDATE ON 12/11/2025 AT 1503 EST FROM GARY FORSEE TO JORDAN WINGATE * * *

"The Agency was notified December 10, 2025, that the package was located and is being returned to the manufacturer. This matter is considered closed."

Notified R1DO (Warnek), NMSS Events Notifications (email), ILTAB (email), and R3DO (Nguyen)

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 - FOUND ORPHAN SOURCE

The following information was provided by the Illinois Emergency Management Agency (the Agency) via phone and email:

"The Division of Radioactive Materials was notified on December 9, 2025, that an Alnor Instruments dew point measurement device, containing a radium-226 source, was located at a metal recycling facility in Bellwood, IL. The instrument was recovered by Agency staff. There was no indication of removable contamination. The device contains a 7 microcurie radium-226 foil that was manufactured and distributed under an Illinois-specific license that has since been terminated. An authorized service provider (DewPointer) was previously licensed and maintained the sealed source and device registry sheet but has since terminated operations. Labeling and serial numbers were damaged to the point that the prior owner will be unable to be determined. No public exposures in excess of regulatory limits are anticipated as a result of this incident. This device will be incorporated in the Agency's orphan source recovery program and properly disposed of as low level radioactive waste. This matter is considered closed."

Illinois item number: IL250050

* * * UPDATE ON 12/12/2025 AT 15:18 EST FROM GARY FORSEE TO KAREN COTTON * * *

The following information was provided by the Illinois Emergency Management Agency (the Agency) via email:

"Upon investigation, three additional Alnor dew point measurement devices were identified and surrendered to the Agency for disposal as low level radioactive waste. Device serial numbers will be researched to identify the owners and appropriate enforcement/cost recovery [actions will be] initiated where possible."

Notified (email) R3DO (Nguyen), NMSS Events Notification.

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 - LOST SOURCES

The following information was provided by the PA Bureau of Radiation Protection (Department) via email:

"On December 10, 2025, the Department was notified that the licensee may have lost two 100-millicurie americium-241 sealed sources (S/Ns 110790 and 113504). It is thought the loss occurred between June 2 and June 20, 2025, during clean-up activities in a maintenance area where the two sources may have been inadvertently disposed of in a roll-off container. The sources were used in Filtec model FT-50 fill gauges. The most recent leak test for the sources was completed, and passed, on June 1, 2025.

"The Department is in contact with the licensee, awaiting more information regarding any possible overexposures or contamination, and will update this document as more information is provided.

"The Department will perform a reactive inspection."

PA Event Report ID: PA250017

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

INVALID SPECIFIED SYSTEM ACTUATION

The following information was provided by the licensee via phone and email:

"This 60-day optional telephone notification is being made in lieu of a licensee event report submittal as allowed by 10 CFR 50.73(a)(1). This notification is made pursuant to the reporting requirements specified in 10 CFR 50.73(a)(2)(iv)(A) for an invalid actuation of one of the systems listed in 10 CFR 50.73(a)(2)(iv)(B).

"At approximately 1001 EDT on October 21, 2025, an invalid actuation of the 'B' train motor-driven auxiliary feedwater (MDAFW) pump occurred with Harris Nuclear Plant while in mode 6. After investigation [it was determined that] the pump automatic start signal was from the anticipated transient without scram mitigation system actuation circuitry (AMSAC). Restoration from functional testing of AMSAC was in progress at the time of the pump start. Separate surveillance testing of the 'B' train emergency safeguards sequencer was being prepared for and enabled the 'B' train MDAFW pump start while restoring 'B' MDAFW pump control power prior to the event. The 'B' train MDAFW pump started and ran with no abnormalities noted. The overlapping testing activities allowed for the AMSAC start signal to be sent to the 'B' MDAFW pump.

"The actuation was not initiated in response to actual plant conditions, it was not an intentional manual initiation, and there were no parameters satisfying the requirements for initiation of the system. Therefore, this event has been determined to be an invalid actuation.

"This event did not impact the health and safety of the public. The NRC Resident Inspector has been notified."

FITNESS FOR DUTY EVENT

The following information was provided by the licensee via phone and email:

"On December 15, 2025, at approximately 1131 EST, a manager violated the FFD policy, which is reportable under 10 CFR 26.719(b)(2)(ii). Site access personnel detected the odor of alcohol during in-processing activities. For-cause testing was performed, and the test confirmed the individual was positive for alcohol. The individual was denied access.

"The NRC Resident Inspector has been notified."

FITNESS FOR DUTY (FFD) EVENT

The following information was provided by the licensee via phone or email:

"On December 16, 2025, at 1000 CST, it was determined that a supervisor tested positive in accordance with the FFD testing program. The individual's authorization for site access has been terminated.

"The NRC Resident Inspector has been notified."