Event Notification Report for September 09, 2024

EN Revision Imported Date: 9/9/2024

EN Revision Text: PART 21 REPORT - NON-COMPLAINT INSULATED CONDUCTOR

The following is a synopsis of information received via fax:

A reel of insulated conductor was found non-compliant due to failure of insulation tensile and elongation at break test following air oven aging. Wire from the non-compliant reel was delivered to nine plants.

Affected plants: Wolf Creek, Dresden, LaSalle, Limerick, Peach Bottom, Arkansas Nuclear One, Waterford, Susquehanna, and Davis Besse.

Reporting company point of contact:
RSSC Wire and Cable LLC
dba Marmon Industrial Energy and Infrastructure
20 Bradley Park Road
East Granby, CT 06026

Phillip Sargenski - Quality Assurance Manager
Phone: 860-653-8376
Fax: 860-653-8301
Phillip.sargenski@marmoniei.com


* * * UPDATE ON 08/23/24 AT 1315 EDT FROM PHILLIP SARGENSKI TO JOSUE RAMIREZ * * *

The vendor provided the final report for this event listing corrective actions and the estimated completion dates.

Notified R1DO (Lilliendahl), R3DO (Skokowski), R4DO (Vossmar), and Part 21 group (Email).

* * * UPDATE ON 09/04/24 AT 1044 EDT FROM PHILLIP SARGENSKI TO NESTOR MAKRIS * * *

The vendor notified the NRC that they plan to send additional finding data regarding this notification via fax and/or email within the next day or two.

Notified R1DO (Ferdas), R3DO (Hills), R4DO (Drake), and Part 21 group (Email).

* * * UPDATE ON 09/06/24 AT 1327 EDT FROM PHILLIP SARGENSKI TO ADAM KOZIOL * * *

The vendor identified an additional non-compliant shipment of insulated conductor.

Affected plant: Calvert Cliffs

Notified R1DO (Ferdas), R3DO (Hills), R4DO (Drake), and Part 21 group (Email).

EN Revision Imported Date: 9/9/2024

EN Revision Text: OFFSITE AGENCY NOTIFICATION OF LOW-LEVELS OF TRITIUM DETECTED IN GROUNDWATER

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

"On September 5, 2024, Southern California Edison reported, as a proactive measure, detectable levels of tritium in onsite groundwater wells to offsite government agencies. The tritium levels do not exceed reporting thresholds in the [Nuclear Energy Institute's] NEI 07-07 communication protocol, the offsite dose calculation manual, nor the NRC regulations in 10 CFR Part 20. Offsite ocean water samples have not identified the presence of tritium above detectable levels. An investigation is currently ongoing to determine the source of tritium and determine mitigative actions, if any.

"This notification is being made solely as a four-hour, non-emergency notification for a notification of another government agency. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi).

"There was no impact on the health and safety of the public or plant personnel."

The NRC regional inspector will be notified.

EN Revision Imported Date: 9/9/2024

EN Revision Text: SAFETY EQUIPMENT FAILURE

The following information was provided by the licensee via email:

"While performing a criticality process analysis, assumptions utilized in modeling the placement of criticality detectors, within the BWXT Nuclear Operations Group Inc. - Lynchburg, VA (BWXT NOG-L) facility, were questioned. Upon further examination of the base assumptions, it was identified that a limited number of process areas in the facility do not have adequate criticality detection capability, meeting the requirements of 10 CFR 70.24(a)(1).

"Compensatory measures are being systematically implemented; operations within the identified areas have been shut down and processing of special nuclear material in these areas has been halted until compensatory measures can be implemented. The likelihood of a criticality occurring at BWXT NOG-L remains highly unlikely, the performance requirements of 10 CFR 70.61 are still being met, and no Items Relied On For Safety (IROFS) have been affected - all IROFS credited in the prevention of a criticality accident are available and reliable.

"The Senior Resident Inspector has been notified."

* * * UPDATE - THIS EVENT IS BEING PUBLICALLY RELEASED AS OF 9/9/2024 BY HOWIE CROUCH AT 1542 EST * * *

AGREEMENT STATE - STUCK OPEN GAUGE SHUTTER

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

"On September 2, 2024, the Department was notified by NexTier Completion Solutions Inc (the Licensee) that the handle on a Berthold model LB 8010 density gauge had broken off the gauge while at a well site. The gauge shutter was in the open position when the failure occurred and could not be closed. The gauge contains a 20 millicurie cesium-137 source. The gauge was removed from the truck, wrapped in lead blankets, placed in an overpack, and transported to the Licensee's storage area. The Licensee reported there were no overexposures due to this event. Additional information will be provided as it is received in accordance with SA-300."

Texas incident number: I-10125

AGREEMENT STATE - LOST ION MOBILITY SPECTROMETRY CELL

The following information was provided by the Colorado Department of Public Health and Environment via email:

"On August 16, 2024, the radiation safety officer at Particle Measuring Systems, Inc. notified the Colorado Department of Public Health and Environment via email that an ion mobility spectrometry cell containing a 10 mCi nickel-63 source was discovered to be missing during the licensee's six-month inventory. The inventory was conducted on July 26, 2024, but the actual date of loss is unknown. The licensee believes that a transactional error occurred in their inventory as opposed to an actual loss, but does not have data to prove that a source was not lost."

Colorado event report ID number: CO 240021

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

AGREEMENT STATE - STOLEN MOISTURE DENSITY GAUGES

The following information was provided by the California Radiologic Health Branch via email:

"The RSO and Vice President of NMG Geotechnical, Inc. notified the California Radiologic Health Branch that two moisture density gauges had been stolen over the weekend (August 30 - Sept 2, 2024) from a locked trailer at their jobsite. Other construction equipment was also stolen. Thieves removed security bars from a window to enter and exit the trailer. The two gauges were secured within separate locked cabinets inside the trailer, inside their locked transportation cases that has company name and contact number affixed.

"The Troxler model 3411, number 12325 contains 8 millicurie of Cs-137 and 40 millicurie of Am-241/Be sealed sources. The CPN MC-3 Elite contains 10 millicurie of Cs-137 and 50 millicurie of Am-241/Be sealed sources. A trigger lock on the CPN gauge was not engaged and the Troxler did not have a trigger padlock.

"Irvine Police Department was notified of the theft. Maurer Technical Services was also notified. NMG Geotechnical will post a reward for information leading to the return of the stolen equipment."

California 5010 Number: 090324

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