Event Notification Report for November 13, 2024

AGREEMENT STATE REPORT - STUCK OPEN SHUTTER

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

"On November 6, 2024, the Department was notified by the licensee that the shutters of two Vega model SH-F2 gauges were stuck in the open position. Open is the normal operating position. Each gauge contains a Cs-137 sealed radioactive source and the activities for the sources are 500mCi and 600mCi respectively. The discovery was made by the licensee on November 5, 2024, [at 1745 CST] during a routine semi-annual visual inspection of the gauges. The licensee has made arrangements for a service provider to conduct repairs on the shutters on November 8, 2024. The licensee stated the gauges do not pose a risk of additional exposure to any worker or member of the public.

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

Texas Incident #: 10142
Texas NMED # TX240041

OFFSITE NOTIFICATION

The following is summary of information provided by the licensee via phone and email:

On November 11, 2024, at 1510 EST, site personnel identified what appeared to be water bubbling up from the pavement adjacent to the sanitary lift station 'C' outside of the facility industrial area. Less than 100 gallons of non-radiological sanitary water ran to a catch basin connected to permitted outfall number 007. Visual inspection did not identify any odor or indication of flow at outfall number 007 discharge. By 1530, the lift station pumps had been secured, sources of influent to the lift station were removed from service, and efforts were underway to pump the tank.

At 1611, an offsite notification was made to the Environmental Protection Agency's Enforcement and Compliance Assurance Division in accordance with Section B of the station's National Pollutant Discharge Elimination System (NPDES) Permit No. 0003557. The event was associated with leakage from underground sewage system piping from a non-radiological underground tank and lift station.

The NRC Resident Inspector will be notified.

MSIV FAILED TO CLOSE DURING SURVEILLANCE

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

"At 2250 EST on November 11, 2024, a technical specification required shutdown was initiated at Beaver Valley Power Station Unit 2. The following technical specification limiting conditions of operation (LCOs) were entered at 1939 EST on November 11, 2024:

"LCO 3.6.3, containment isolation valves, condition C, one or more penetration flow paths with one containment isolation valve inoperable; required action C.1, isolate the affected penetration flow path by use of at least one closed and de-activated automatic valve, closed manual valve, or blind flange.

"LCO 3.7.2, main steam isolation valves (MSIVs), condition C, one or more MSIVs inoperable in mode 2 or 3; required action C.1, close MSIV within 8 hours.

"These technical specification required actions will not be completed within the completion time; therefore, a technical specification 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).

"With one main steam isolation valve inoperable, this condition is also being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v).

"There was no impact on the health and safety of the public or plant personnel.

"The NRC Resident Inspector has been notified."

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

The failure occurred during planned surveillance testing in preparation for reactor startup.