Event Notification Report for April 23, 2025

AGREEMENT STATE REPORT - DAMAGED GAUGE

The following report was received by the Utah Department of Environmental Quality, Division of Waste Management and Radiation Control via email:

"On April 15, 2025, a testing crew was conducting density tests using a gauge with a cesium-137 source on a road that was closed and blocked off. A truck drove down the road at a high speed and almost hit the gauge operator and hit the gauge. Everyone within a 30-foot radius was evacuated. The licensee is waiting for some assistance. No clean-up has been performed, and it is unknown whether the source within the gauge has been ruptured or not."

Utah Event Number: UT250002

AGREEMENT STATE REPORT - FAILED SHUTTER

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

"On April 15, 2025, the Department was notified by the licensee that the shutter on a Kay Ray 7063 gauge had failed in the open position. Open is the normal position for the gauge. The gauge contains a 200 mCi (original activity) cesium-137 source. The licensee reported that there is no risk of additional radiation exposure to members of the general public or radiation workers.

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

Texas incident number: 10192

Texas NMED number: TX250024

AGREEMENT STATE REPORT - MEDICAL EVENT

The following report was received by the California Radiation Control Program via email:

"On April 15, 2025, the radiation safety officer at Cedars Sinai Medical Center contacted Los Angeles County Public Health Radiation Management (part of the California Radiation Control Program), first by telephone at 0955 PDT and then by email at 1055 PDT, to report a medical event that occurred at Cedars Sinai Medical Center. During the administration of Y-90 TheraSpheres to a patient, the Y-90 TheraSpheres became obstructed within the intravenous tubing such that the authorized user was unable to administer the full dosage. The activity in the syringe was approximately 35 mCi, but only 12.14 mCi was delivered to the target organ. This was 35 percent of the prescribed activity. Additionally, the prescribed dose to the liver (the target organ) was 78.8 gray [7,880 rads]. The liver received a dose of 27.6 gray [2,760 rads], a difference of 51.2 gray [5,120 rads].

"A site visit by the principal radiation protection specialist, Los Angeles County Public Health Radiation Management is scheduled for April 17, 2025."

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.

California 5010 Number: 041525

FITNESS FOR DUTY REPORT

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

"A non-licensed supervisor had a confirmed positive fitness-for-duty follow-up test. The employee's unescorted access has been terminated. This report is being made pursuant to 10 CFR 26.719(b)(2)(ii).

"The NRC Resident Inspector has been notified."

EN Revision Imported Date: 4/23/2025

EN Revision Text: OFFSITE NOTIFICATION

The following information was provided by the licensee via phone:

On April 22, 2025, at 1803 EDT, a forest fire reached the Oyster Creek property. The station contacted local fire department and the Lacey Township police department for response. At approximately 1940 EDT, the fire within the property was extinguished. The fire company continued to monitor the fire outside the property boundary at the time of this notification. There was no radiological or fuel storage damage from this event.

The NRC Regional Inspector will be notified.