Event Notification Report for June 05, 2026

AGREEMENT STATE REPORT - FOUND SOURCE

The following information was provided by the Louisiana Department of Environmental Quality (the Department) via email:

"Scrap metal from Big Cajun 2 [a coal power plant in] New Roads, Louisiana was sent to Louisiana Scrap Metal located in Port Allen, Louisiana, on Tuesday, May 26, 2026. It was reported to the Department on May 29, 2026, that the metal scrap was surveyed and a device with thorium was detected. The vendor was called out and surveyed the device which indicated a radiation reading of 20 microroentgen per hour at the surface. The vendor did not indicate that the device was leaking from a wipe test. The device was secured at Louisiana Scrap Metal. Big Cajun 2 is currently trying to determine where to send this device for disposal.

"The presumption at this time is the device was a gas meter manufactured by General Electric. The source was thorium, but the make, model, serial number, or activity of the source is not known at this time. The device was not on the radioactive material license, and the assumption is that it is a general license device until more information can be ascertained."

Louisiana Event Report Number: LA20260008

AGREEMENT STATE REPORT - LEAKING SOURCE

The following information was provided by the Washington Office of Radiation Protection via email:

"A leaking source was encountered while inspecting a gas chromatograph that had been in storage. It was visually apparent that the source housing was damaged. A soldered joint in the steel housing failed within the gas chromatograph and resulted in a mechanical failure.

"The area was controlled, and surveys were taken of the source and proximate area. Surveys of the source were counted, and contamination above reportable quantities was found on the source body. No loose surface contamination was found. The leaking source was properly secured. The source was a Ni-63 source, serial number: 1350, with an 8.26 mCi total activity. The source holder was a Shimadzu GC-14A gas chromatograph. The Washington State Department of Health will verify that corrective actions have been appropriately implemented during the next routine inspection that is performed."

Washington Event Number: WA-26-007

TECHNICAL SPECIFICATION REQUIRED SHUTDOWN

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

"On June 4, 2026, at 1535 EDT, a technical specification (TS) required shutdown was initiated at Millstone Unit 2. TS 3.1.3.1 action 'A' was entered at 1234 EDT with a required action to reduce thermal power to less than 70 percent of the maximum allowable thermal power within 1 hour and restore control element assembly misalignment within 2 hours. This required action was not completed within the completion time, therefore, a TS required shutdown was initiated and this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(i).

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

"There has been no impact to Unit 3, which remains at 100 percent power."