Event Notification Report for November 07, 2025

AGREEMENT STATE REPORT - STUCK SOURCE

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

"On October 29, 2025, the Agency received a notification from the licensee regarding a source disconnect that occurred during an industrial radiography operation at a temporary job site. The radiography camera involved is a QSA Global Delta 880 model, containing a 102 curie iridium-192 sealed source (original activity date October 16, 2025). The licensee stated that on October 28, 2025, the guide tube through which the radioactive source travels became crimped, resulting in the source becoming stuck in the exposed position and preventing normal retraction into the shielded position. The licensee stated that a technician crimped the source tube by placing it through a swivel mechanism equipped with pressure clamps, rather than using a separate rod and properly attaching the source tube to the rod. The clamping pressure deformed the guide tube, causing the drive cable to fail when excessive force was applied by the technician to retract the source. The technician contacted one of the licensee's authorized source recovery experts who responded to the site. The licensee stated that the source was safely recovered and returned to the locked, shielded position using an empty camera for transfer. The source is currently stored at the licensee's workshop. The licensee stated that dosimetry badges for all workers present at the time of the incident have been sent out for processing to the service provider. The licensee stated that there was no exposure to members of the public as a result of this event.

"Additional information will be provided in accordance with SA-300 reporting requirements."

Texas Incident #: 10240
Texas NMED # TX250057

STOLEN SOURCE

The following information was provided by the licensee via phone:

The licensee reported that a trailer containing an electron capture device with a 5 mCi Ni-63 source was discovered stolen from a university agricultural research station on October 2, 2025. Local law enforcement (Kalamazoo County Sheriff) and Michigan State University police were notified. The trailer has not been located.

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

AUTOMATIC EMERGENCY DIESEL GENERATOR ACTUATION

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

"At 1003 Central Standard Time (CST), with [Unit 1] in mode 5 at 0 percent power, an actuation of the 'A' emergency diesel generator (EDG) occurred when energizing main transformers from the switchyard for post-installation soak. The energization was coordinated with transmission system operators using approved procedures, however, grid conditions external to the substation allowed the voltage to drop below the NB01 undervoltage relay setpoint. The EDG automatically started as designed and picked up the loads on the NB01 bus. All safety systems responded as designed. Substation parameters immediately recovered to normal values, and all systems were restored to [normal] standby conditions.

"This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the 'A' EDG. There was no impact on the health and safety of the public or plant personnel.

"The NRC Resident Inspector has been notified."

OFFSITE NOTIFICATION

The following information was provided by San Onofre Nuclear Generating Station (SONGS) via phone and email:

"At 1109 PST, SONGS made [an] official notification to the [California] Department of Toxic Substance Control (DTSC) relating to one violation/citation non-minor, requiring corrective action related to the hazardous waste facility, permit CAD000630921.

"Specifically, SONGS violated 22 California Code of Regulations (CCR) 66270.30(a) and California Health and Safety Code 25202(a), in that SONGS failed to comply with the conditions of the permit, specifically Part V `Special Conditions,' #5. To wit, DTSC inspectors observed the secondary containment which failed to be free of cracks or gaps in a waste management unit located in the [Hazardous Materials] Area - South Yard Facility (SYF), Section A.

"During the physical inspection, the inspector noted holes were drilled into the slab (the containment system) of mixed waste/hazmat storage pad areas.

"Because the identified holes only partially penetrate the secondary containment (i.e., the concrete pad), the secondary containment remains functional and intact and is sufficiently impervious to contain leaks, spills and accumulated precipitation.

"SONGS is in discussions with DTSC to determine if the holes partially penetrating the pad exceed the permit requirement."

The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:

SONGS will notify NRC Region IV of this event.

FITNESS FOR DUTY EVENT

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

"On November 6, 2025, at 1014 [EST], it was determined that a licensed supervisory operator was in violation of the licensee's fitness for duty (FFD) policy. The test result was negative but determined to be reportable under 10 CFR 26.719(b)(2)(ii) due to violation of the licensee's FFD policy. The employee's unescorted access has been placed on hold in accordance with the licensee's FFD policy.

"The NRC Senior Resident Inspector has been notified."