Event Notification Report for March 05, 2025

AGREEMENT STATE REPORT - DAMAGED RADIOGRAPHY CAMERA

The following report was received via email by the Tennessee Division of Radiation Health:

"During a scheduled work visit to the TVA Cumberland City facility, a radiography crew was descending an outside set of stairs covered with ice. The worker slipped on the stairs and released the camera which dropped approximately 20 feet to the ground. The team surveyed the area to ensure it was safe to approach the device. After ensuring the device was secured, it was placed into an overpack and transferred back to the licensee's facility. A minor amount of damage was incurred to the rear of the device. The team had no indication that the source was compromised.

Manufacturer: QSA Global
Model: Sentinel 880D
SN: D9269
Source: Ir-192; 89.6 Ci
Source Model: 424-9
Source SN: 12835P

"Corrective actions or reports as well as additional information will be updated with a NMED report within 30 days."

State Event Report ID No.: TN-25-014

AGREEMENT STATE REPORT - MEDICAL EVENT

The following information was received from the California Department of Health (CDPH) via email:

"The radiation safety officer for Hoag Hospital in Irvine called the California Office of Emergency Services to report a potential medical event that occurred during a research treatment that involved a targeted alpha radionuclide therapy. The authorized user prescribed 289 microcuries of Ac-225 in the form of FPI-2265 also known as [225Ac] PMSA imaging therapy; however, the Biodex pump used to administer the dose leaked, and only approximately 80 microcuries were administered.

"The treatment was for metastatic castrate resistant prostate cancer primarily located in bone marrow. CDPH will conduct an investigation of the circumstances of the medical event."

A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.

AGREEMENT STATE REPORT - STUCK SHUTTERS

The following report was received from the Texas Department of State Health Services (the Department):

"On February 26, 2025, the Department was notified by the licensee that during routine testing, the shutters on three nuclear gauges were found stuck in the open position. Open is the normal operating position for the gauges. The gauges are all Texas Nuclear gauge models; a '5200' model containing a 20 millicurie source, a '5201' model containing a 100 millicurie source, and a '5208' model containing a 4,000 millicurie source. All sources are cesium - 137 sources. The licensee reported that there is no risk of additional radiation exposure to members of the general public or radiation workers due to this on/off mechanism failure. Additional information will be provided as it is received in accordance with SA-300."

Texas Incident Number: I-10173

HPCI DECLARED INOPERABLE

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

"At 1044 EST, Unit 2 high pressure coolant injection (HPCI) system was declared inoperable per technical specification 3.5.1.C.1 during planned surveillance testing due to test equipment failure and subsequent inadvertent isolation of the outboard HPCI turbine exhaust line vacuum breaker primary containment isolation valve. The test equipment was removed, and the vacuum breaker isolation valve was re-opened. HPCI was restored to operable status at 1351.

"Due to inoperability, the system was in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72.(b)(3)(v)(D).

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

DEGRADED CONDITION

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

"At 1803 EST on 03/03/25, it was determined that the reactor coolant system pressure boundary does not meet American Society of Mechanical Engineers (ASME) section XI, Table IWB-341 0-1, 'Acceptable Standards' due to a through wall leak where the thimble tube connects to penetration number 6. The cause of this event is currently being investigated. This event is being reported pursuant to 10 CFR 50.72(b)(3)(ii)(A).

"The NRC Resident Inspector has been notified."

FITNESS FOR DUTY - PROGRAMMATIC FAILURE

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

"On March 4, 2025, fitness-for-duty (FFD) program administrators identified a site employee who was required to be part of the FFD program random testing pool, had been inadvertently removed from it on August 5, 2024. The employee's protected area access has been placed on hold in accordance with the station process. The issue has been placed into the site corrective action program for further review and evaluation to determine the cause. This event notification is being made in accordance with 10 CFR 26.719(b)(4)."

The NRC resident inspector has been notified.