Event Notification Report for March 31, 2021

AGREEMENT STATE REPORT - STUCK SHUTTER

The following was received from the Texas Department of State Health Services (the Agency) via email:

"On March 22, 2021, the Agency was notified by the licensee's radiation safety officer (RSO) that earlier that day the shutter on a Berthold LD 8010 containing a 20 millicurie cesium-137 (original activity) source had failed to close. The gauge is installed on an inline section of pipe used in well fracking. The RSO stated that the roll pin for the shutter had failed and the operating arm would not rotate the shutter. The gauge was removed from the pipe and the operator was able to close the shutter. The RSO stated no overexposures occurred due to the event. The RSO stated a radiation survey of the gauge indicated dose rates were normal. The gauge was secured in a trailer on-site. The RSO stated the manufacturer was contacted and gauge will be packaged in a type 'A' container and sent to the manufacturer for repair. Additional information will be provided as it is received in accordance with SA-300."

Texas Incident Number: 9832

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

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