Event Notification Report for December 29, 2021

EN Revision Imported Date: 12/29/2021

EN Revision Text: AGREEMENT STATE REPORT - EQUIPMENT MALFUNCTION

The following was received from the Louisiana Department of Environmental Quality (LDEQ) via e-mail:

"On December 20, 2021, at approximately 1:55 pm, Central Standard Time, [the] Radiation Safety Officer for Rubicon, LLC, notified LDEQ of equipment malfunctions. Three Ohmart Model SH-F1 level/density gauges experienced shutter malfunctions, two installed on a vessel within the MDI-III process unit and one Model SH-F1 gauge installed on a vessel in the MDI-I processing unit. The gauges in the MDI-III unit possess two nominally 20 mCi sealed sources of Cs-137 and the gauge in MDI-I possesses a nominally 70 mCi sealed source of Cs-137. The above gauges were undergoing routine annual shutter tests when the above malfunctions were observed. The first gauge sealed source, 1566CG, installed on October 15, 2001, item 73 on the licensee's source inventory, is mounted on vessel MM-9303 in the MDI-3 unit. The second gauge source, 1567CG, installed on October 15, 2001, item 74 on the licensee's source inventory, is also mounted on vessel MM-9303. The third gauge source, 72930, installed on January 19, 1998, item 38 on the licensee's source inventory, is mounted on the P1 PI scrubber in the MDI-1 unit. [The] Zone Maintenance Coordinator, notified [the RSO] concerning the shearing of screws even with the top of each rotor on the two gauges in the MDI-III unit. [The Zone Maintenance Coordinator] also reported to the RSO that the source holder in the MDI-1 unit experienced a problem with the rotor mechanism not aligning with the shutter handle, which prevented the gauge shutter from closing fully. [The Zone Maintenance Coordinator] learned of the malfunctions during annual inventory work and reported the problem to the RSO on December 16, 2021 at approximately 2:30 pm. The situation with each gauge is under the licensee's control, and there were no exposures to members of the public approaching regulatory limits. Currently, the shutters on gauges, 73, 74, and 38 remain in the open position, as the gauge sources are needed to operate process control equipment. The gauges cannot be locked out in their current state. As a result, no vessel entries will be conducted on either vessel MM-9303 or the P1 PI scrubber vessel until the gauges are repaired by BBP Sales (BBP). Work orders have been written to correct the malfunction of all three devices. The licensee will continue to monitor the gauges and their status of repair. The licensee stated they would keep the LDEQ updated on progress of the repairs."

Louisiana Event Report ID No.: LA 210012

EN Revision Imported Date: 12/29/2021

EN Revision Text: AGREEMENT STATE REPORT - STOLEN MOSITURE DENSITY GAUGE

The following information was received from the California Department of Public Health, Radiologic Health Branch (RHB) via email:

"On Tuesday, December 21, 2021, Anbessaw Consulting, Inc. RSO [ ] reported the theft of a CPN MC-3 (#M320500859) containing sealed sources of Cs-137 (10 mCi) and Am-241:Be (50 mCi). The theft occurred overnight between Monday and Tuesday 12/20-21/2021 at an authorized gauge user's apartment complex located at 642 Montgomery Circle, Claremont, CA 91711. The AU discovered that his truck was broken into at approximately 0430 PST Tuesday 12/21/21, the truck was parked in a non-covered space in the apartment complex parking area. The AU had returned to his apartment from a jobsite in Glendora at 2100 PST Monday and was scheduled to return to the jobsite early on Tuesday. The CPN nuclear gauge handle was locked to prevent operation, the gauge was locked in its transport case, and the transport case was locked inside the truck cab. Other equipment and personal items were also stolen from the truck. A police report was filed with the Claremont police department (DR# 2103145). The licensee also submitted a reward ad in the local Daily Breeze stolen section which will run from 12/23-29/2021."

CA 5010 Number: 122121

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: 12/29/2021

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: 12/29/2021

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."