Event Notification Report for May 16, 2025

EN Revision Imported Date: 5/16/2025

EN Revision Text: AGREEMENT STATE REPORT - RADIATION EXPOSURE

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

"On May 1, 2025, a crew made up of a radiographer trainee and a trainer were working on a job site near Orla, Texas. They were using a 58 Ci Ir-192 source [probably with] a Source Production and Equipment Company (SPEC) 150 device. The radiation safety officer (RSO) stated they had completed a shot and the trainer went to look at the digital picture of the weld. The trainee went to the pipe to setup the next shot. The trainee removed the source collimator and set it down. The trainee began to remove the imaging device when the trainer walked up, and the trainer's alarming rate meter went off. The two radiographers left the area, went back to the crank out handle, and found the source was still cranked out and in the collimator. The radiographers retracted the source to the fully shielded position. The trainee's self-reading dosimeter was off scale. The radiographers contacted the RSO and informed them of the event.

"The local RSO had the radiographers reenact the event. It was determined that the trainee was near the exposed source for about three minutes. The trainee reported the collimator was strapped to a stand. The trainee did not touch the collimator when he was moving the source. The majority of the dose would have been to the trainee's knee because of the way the trainee carried the stand with the source. They believe the trainee would have been at least 18 inches from the source during the event. They also believe the trainee was exposed to the source for three minutes. The calculated dose to the knee ranges between 500 millirem and 7.8 rem, depending on what direction the collimator port was facing.

"The trainee's alarming rate meter was tested after the event and functioned properly. The trainee's dosimeter is being sent in for processing, but the results will probably not be received until May 5, 2025.

"[The Department] requested pictures of the hands of the individual involved in the event to be taken and submitted daily for the next week. The RSO agreed to submit a written report on Monday May 5, 2025."

Texas incident report number: 10195
Texas NMED number: TX250026


* * * RETRACTION ON 05/15/25 AT 1117 EDT FROM ART TUCKER TO JORDAN WINGATE * * *

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

"On May 6, 2025, the licensee provided a video of the reenactment of the event. The video shows the collimator with the source mounted on a stand. The source would have been 12 inches from the trainee's knee and about 6 inches to the closest part of the leg. The licensee used this information to calculate the dose to the radiographer trainee.

"On May 12, 2025, the licensee provided a copy of the request they had sent to its dosimetry processor requesting that the assigned dose to the trainee be 1,069 millirem for the trainee's DDE (deep dose equivalent) and LDE (lens dose equivalent) exposure and a dose of 2,850 millirem be assigned for the SDE (shallow dose equivalent) for the event. No exposures exceeded any limit.

"The licensee's name reported in the initial event was incorrect. The name of the licensee is Nondestructive & Visual Inspections LLC.

"The event has been retracted."

Notified R4DO (Gepford) and NMSS Events Notifications (email).

AGREEMENT STATE REPORT - STOLEN GAUGE

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

"On May 8, 2025, the licensee reported that at 1245 CDT a Humboldt moisture density gauge containing two sources, an 8 mCi [Cs-137] source and a 40 mCi Am-241/Be source, was stolen from a truck at a jobsite in Houston. The gauge was locked in the bed of the transport vehicle while the gauge operator was in the restroom. The chains holding the gauge were cut and the gauge removed. It was reported to the Houston police department. The licensee reported the handle was in the up position and locked and there is no immediate danger to the public.

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

Texas NMED # 250027
Texas Incident # 10196

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

FITNESS FOR DUTY

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

"At 0820 EDT on May 15, 2025, it was determined that a NextEra Energy Seabrook non-licensed supervisor failed a test specified by the Fitness For Duty testing program. The individual's unescorted access has been terminated. This event is being reported pursuant to 10 CFR 26.719(b)(2)(ii).

"The NRC Resident Inspector has been notified."

UNUSUAL EVENT - LOSS OF ALL OFFSITE POWER

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

At time 1828 EDT on 5/15/25, Oconee declared an Unusual Event (SU1.1) due to a loss of all offsite power for greater than 15 minutes. This occurred when the site lost their startup transformers (CT 2&3). At the time of the event, the site was restoring from switchyard maintenance and was experiencing a loss of their overhead powerline from the Keowee Hydropower Station. The underground powerline remains operable as a source of emergency power.

Units 1, 2, and 3 remain at 100 percent power with Unit 1 being unaffected by this event. Units 2 and 3 are being powered by their auxiliary transformers.

State and local agencies were notified. The NRC Resident Inspector has been notified.

Notified DHS SWO, FEMA Operations Center, CISA Central Watch Officer, FEMA NWC, DHS Nuclear SSA (email), CWMD Watch Desk (email).

* * * UPDATE ON 5/16/2025 AT 0052 EDT FROM ALAN HOGLEN TO SAMUEL COLVARD * * *

At time 0045, on 5/16/25, Oconee terminated their Unusual Event (SU1.1) due to restoring offsite power (CT 2&3 have been restored).

The NRC Senior Resident Inspector has been informed.

Notified R2DO (Desai), IR MOC (Grant), NRR EO (Felts).
External notifications: DHS SWO, FEMA Operations Center, CISA Central Watch Officer, FEMA NWC, DHS Nuclear SSA (email), CWMD Watch Desk (email).