Event Notification Report for September 03, 2026

AGREEMENT STATE REPORT - OVEREXPOSURE

The following is a summary of information provided by Alabama Office of Radiation Control (the Agency) via email:

Agency staff received a preliminary report of an overexposure to an industrial radiographer assistant. The radiation safety officer (RSO) reported discovering the overexposure when the monthly personnel dosimetry report indicated the individual received a dose in excess of 5 rem.

Investigation by the licensee determined that the assistant radiographer had been performing the setup function for multiple exposures on a job. The assistant radiographer apparently did not verify source retraction with a survey meter before performing setup activities for the next exposure and, upon returning to the exposure device after setup, noticed it was unlocked. The assistant radiographer did not report the incident to the responsible radiographer or the RSO and waited until the end of the monitoring period to turn in their dosimeter.

The date and location of the incident were not provided by the licensee in their preliminary report. The licensee is preparing a detailed report with planned corrective actions.

Alabama incident: 26-13

AGREEMENT STATE REPORT - LOST EXIT SIGN

The following is a summary of information provided by the Colorado Department of Public Health and Environment via email:

An exit sign was declared lost by the licensee on July 15, 2026. The exit sign is manufactured by Isolite Corporation (Model #: 880-12-6) with a total activity of 11.5 Ci of tritium (H-3).

Colorado Event Report ID Number: CO260021

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

PART 21 - BREAKERS NOT CLOSING

The following is a summary of information provided by Westinghouse Electric Company, LLC, via email:

Westinghouse has identified motor cutoff switches that were manufactured with an incorrect coating applied to the internal springs. The springs were specified to be colored with dye for identification during manufacturing. Contrary to this requirement, some springs were colored using acrylic paint which has the potential to generate foreign material inside the switch. Accumulation of the acrylic paint particles between moving and stationary contacts could increase contact resistance and prevent the switch from making electrical contact. The identified deviation does not adversely affect the ability of the breakers to open on demand.

This issue is associated with commercially dedicated motor cutoff switches manufactured by Homewood Products Corp. and supplied by Westinghouse as part number 3D51113G02Y as part of the following:

-- spare switch assemblies (4A48863G01Y)
-- new and refurbished DS breakers supplied by Westinghouse
-- refurbished DHP breakers supplied by Westinghouse
-- DS breaker refurbishment kits (4A48813G11Y)

Westinghouse recommends replacement of any switch with a safety function at the earliest allowable opportunity. For applications where the breaker's safety function is to open, Westinghouse recommends verification of the breaker closing circuit resistance.

Westinghouse has entered the deviation into their corrective action program with an overall due date for resolution in the first quarter of 2027. It includes actions to review and update the associated commercial dedication process to prevent recurrence. Westinghouse will also interface with its suppliers to address the use of dye instead of paint and request that corrective actions be implemented to prevent recurrence of this issue.

Potentially affected plants: Braidwood, Byron, Callaway, Catawba, Clinton, Columbia, Comanche Peak, Palo Verde, Seabrook, Sequoya, South Texas, Vogtle, and Wolf Creek

Contact information:
Andrew Bowman
Manager - Global Nuclear Regulatory Affairs
Westinghouse Electric Company LLC
1000 Westinghouse Drive
Cranberry Township, Pennsylvania 16066
Office: 412-374-2363