Event Notification Report for December 30, 2021

EN Revision Imported Date: 12/30/2021

EN Revision Text: AGREEMENT STATE REPORT - RADIOGRAPHY SOURCE UNABLE TO RETRACT

The following information was received from the state of Kansas via email:

"Initial notification from State of KANSAS that we have a radiography licensee reporting that they have a source that is unable to retract. The licensee is a fixed radiography licensee and the source is exposed inside one of their main shops. The shop is not occupied, their [standard operating procedure] (SOP) is to have radiography work after hours when the work spaces are vacant. The area is secured by the radiographer/[assistant radiation safety officer] (ARSO) and his assistant. It appears the stand the guide tube was on fell [and] it is assumed the tube was damaged by the fallen stand. This is an initial report, more information will follow."

The device contains a 24.8 Ci selenium-75 source.

EN Revision Imported Date: 12/30/2021

EN Revision Text: AGREEMENT STATE REPORT - WORKER EXTREMITY OVEREXPOSURE

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

"On December 16, 2021, the Ohio Department of Health was notified by Cardinal Health 414 LLC PET Manufacturing Services that one of their employees exceeded their extremity dose limits.

"On November 26, 2021 at 0440 EST, an employee of Cardinal Health was synthesizing Fluorine-18 FDG in a mini-cell. The employee heard a sound indicating the conical reservoir cap blew-off during synthesis and opened the door to the mini-cell. He contaminated his gloves, lab coat and pants, which he removed and replaced. He did not contaminate his skin, and the licensee stated surveys were conducted showing the floor was not contaminated as a result of this event.

"The Columbus PET Manufacturing RSO (MRSO) sent the employee's finger rings and TLD to Landauer for processing. The dosimetry is sent in biweekly. For the period of November 15 to November 28, the employee received 208 mRem total DDE to the chest, 58,330 mRem to the left hand, and 6,442 mRem to the right hand.

"On December 9, 2021 the MRSO notified the Corporate RSO of the event and removed the employee from radiation related work."

Ohio Item Number: OH210011

EN Revision Imported Date: 12/30/2021

EN Revision Text: AGREEMENT STATE REPORT - LOST TRITIUM EXIT SIGNS

The following information was provided by the Nebraska Department of Health and Human Services via email:

"During annual inventory inspection, two devices were found missing and new non-radioactive exit lights had been installed. Further investigation found that on October 11, 2021, Slater Electric of Grand Island, NE was hired to install the devices. Removal of the tritium [23 curies] devices was not part of the scope of work, but Slater took it upon themselves to remove the old devices and disposed of them in the garbage at their shop in Grand Island, NE which has since went to the landfill. To avoid future instances, Aurora Cooperative discussed with Slater Electric the importance of proper disposal of the signs containing radioactive material and steps to take if hired to do such work again. No further follow up is needed.

"Item Number: NE210004"

THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

EN Revision Imported Date: 12/30/2021

EN Revision Text: LOSS OF SIREN SYSTEM

The following information was provided by the licensee via email:

"On December 27, 2021, at 1014 EST, a system error in the site's Alert and Notification Siren System was identified, indicating a loss of the siren system affecting a greater than 25% of the emergency planning zone population. Review of the system's data logger indicates the system error has been present within the system since December 22, 2021, at 1245 EST.

"The fleet's telecommunications department has been contacted and is aware of the issue. In the event that a radiological emergency should occur at the Shearon Harris Nuclear Power Plant, Primary Route Alerting procedures will be put in use by the local jurisdictions.

"This condition is reportable as a Loss of Emergency Preparedness Capabilities per 10 CFR 50.72(b)(3)(xiii).

"The NRC Resident, state and local agencies have been notified."

* * * RETRACTION ON 12/29/21 AT 1630 EST FROM SARAH MCDANIEL TO KAREN COTTON * * *
The following information was provided by the Licensee via email:

"Further troubleshooting efforts identified that the Chatham County EOC Siren Activation Point remained capable of sending an alert signal to the sirens for the duration of the event described above. This ensures siren activation would be performed in a timely manner in the event of a radiological emergency. This Event Notification is therefore retracted, as no loss of emergency preparedness capabilities has occurred."

The NRC Resident and local agencies have been notified.

Notified R2DO (Miller)

MANUAL REACTOR TRIP and AUTOMATIC ACTUATION OF CONTAINMENT ISOLATION VALVES

This following information was conveyed by the licensee via phone and email:

"At 1552 EST on 12/29/21, with Unit 1 in Mode 1 at 90 percent power, the reactor was manually tripped due to reactor pressure perturbations. The cause of the reactor pressure perturbations is under investigation. Additionally, closure of [containment isolation valves] CIVs in multiple systems occurred during the trip as a result of reaching the actuation setpoint on reactor water level. The trip was not complex, with all systems responding normally post-trip.

"Operations responded and stabilized the plant. Reactor water level is being maintained via condensate / feedwater. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves. Unit 2 is not affected.

"Due to the Reactor Protection System actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B). It is also reportable under 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of CIVs.

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