Event Notification Report for April 01, 2021

AGREEMENT STATE REPORT - STUCK SHUTTER

The following was received from the state of Texas (The Agency) via email:

"On March 23, 2021, the Agency was notified by the licensee's radiation safety officer (RSO) that while conducting routine inspections the shutter on a Berthold LB 7440 nuclear gauge could not be closed. Open is the normal operating position. The gauge contains a 500 millicurie (original activity) cesium-137 source. The RSO stated the gauge is not an exposure risk to any individuals. The RSO stated the gauge manufacturer has been contacted and they are making arrangements to repair the gauge. The gauge is located on a barge currently working in the Intercoastal Waterway near Brownsville, Texas. Additional information will be provided as it is received in accordance with SA-300."

Texas Event Number: 9833

AGREEMENT STATE REPORT - FAILURE TO REPORT UNDERDOSE TO PATIENT

The following was received from the state of Ohio via email:

"During a routine inspection an unreported medical event [that occurred in 2019] involving Yttrium-90 'SirSpheres' was discovered. During patient treatment the licensee encountered increasing resistance to the delivery of the microspheres, leading the licensee to believe the patient had reached stasis. After further investigation the licensee determined the cause of the resistance was clogging of the microcatheter. The dose delivered to the patient was 79.2 percent of the prescribed dose. A subsequent treatment was given to the patient to make up for the underdose. At the time the licensee's procedures did not consider this as a reportable event. The reportable event procedures have been updated."

Ohio Item Number: OH210001

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.

OFFSITE NOTIFICATION DUE TO SEWAGE SPILL

"At 1058 EDT on 3/30/2021, during routine pump down activities from the sites Equalization Basin, open to the environment (consisting of groundwater and runnoff), to a sanitary system manhole, there was a backflow from the sanitary system to the environment (nearby grassy area). The total amount of overflow is estimated to be 150 gallons. Fermi 2 Environment is currently investigating and clean-up is in progress and the backflow has stopped. The cause of the backflow is under investigation.

"As a result of the backflow reaching the environment, reports are being made to the Michigan Department of Environment, Great Lakes, and Energy (EGLE), the Monroe County Health Department, and the local news media. Since these reports are in the process of being made, this is considered a News Release or Notification to Other Government Agencies, therefore this event is reportable under 10 CFR 50.72(b)(2)(xi).

"The licensee has notified the NRC Resident Inspector."

PART 21 - FAILURE OF SIZE 1 AND 2 FREEDOM SERIES FVR STARTERS
The following is a summary of information received from Paragon Energy Solutions:
North Anna Station has identified instances where Size 1 and 2 starters have failed to function as expected in assemblies that were originally supplied by NLI. The Mechanical Interlock exhibited binding that prevented the contactor to close when energized.
The identified starters are utilized in an application of operating Motor Operated Valves.
Date of Discovery: 3/29/2021
Formal notification will be submitted on or before 4/29/2021.

Affected plants:
North Anna

Should you have any questions regarding this matter, please contact:
Tracy Bolt
Chief Nuclear Officer
Paragon Energy Solutions
817-284-0077
tbolt@paragones.com