Event Notification Report for December 22, 2023

AGREEMENT STATE - LOST PACKAGE

The following information was provided by the Illinois Emergency Management Agency (the Agency) via email:

"On December 14, 2023, the Agency was contacted by G.E. Healthcare in Arlington Heights, IL (IL-01109-01) to advise of a radiopharmaceutical package missing in transit. The last known location was the Memphis, TN [common carrier] hub where it was scanned on December 12, 2023. The carrier has declared the package lost. This package does not represent a significant public safety hazard and there is no indication of intentional theft or diversion.

"The subject package is 16 centimeters square, labeled Yellow-II (TI of 0.1), UN2915 and contains a single 3 mL shielded vial of In-111. The activity was 5.210 millicuries at the time of shipment but has since decayed to approximately 1.154 millicuries. It was offered for shipment on December 8, 2023, for delivery to a customer in Clovis, CA on December 11, 2023. Upon failure to arrive, the licensee contacted the carrier and was informed the package was currently unaccounted for."

Item Number: IL230035


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 REPORT - LOST TROXLER GAUGE

The following was submitted by the California Radiation Control Program via email:

"Licensee reported the loss of a Troxler 4640-B # 1383, containing a sealed source of 8 mCi of Cs-137, on December 14, 2023, in the evening. Los Angeles (LA) County-Duty Officer took the initial call from the assistant radiation safety officer. The report was forwarded to LA County Radiation Management and the [State of California] Radiologic Health Branch-South. It was reported that the operator of the device drove only about one mile from the jobsite before realizing the gauge was not in his vehicle's enclosed camper-shell. The driver turned around to search for it and was unsuccessful. The LA County Sheriff's office was also contacted."


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

NON-AGREEMENT STATE - POSSIBLE EXPOSURE ABOVE LIMIT (TEDE > 5 rem)

The following is a synopsis of information provided by the licensee via phone call:

On December 15, 2023, at 0652 EST, JAN X-ray Services received notification from the laboratory performing regularly scheduled analysis of their employee's thermoluminescent dosimeters (TLDs) that one of the units is indicating an employee received a dose of 5.729 rem. The limit is 5.0 rem. The worker is not normally involved in radiography. The licensee is investigating how the employee received the indicated dose.

CONCURRENT REPORT FOR LOW FILTER EFFICIENCY

The following information was provided by the licensee email:

"Pursuant to 10CFR70 Appendix A (c) Framatome is making this concurrent report:

"On December 17, 2023 a routine DOS [di-octyl sebacate] test of one of Framatome's final filter banks had an efficiency of 99.78% which was below the 99.95% efficiency credited by Framatome's radioactive air emissions license. In compliance with Framatome's radioactive air emissions license (RAEL-038), Framatome made the required written notification to the Washington Department of Health (WDOH).

"The loss of efficiency did not cause emissions to be above allowable limits."

PART 21 - FUEL OIL PIPING DEFECT

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

On December 21, 2023, VC Summer determined that the original equipment manufacturer of its Emergency Diesel Generator (EDG) did not provide adequate documentation for an exception to ASME Code, Section III, Class 3 for the on-skid EDG fuel oil system. Specifically, the on-skid fuel oil threaded piping design used a code-allowed exception without providing adequate evaluation documentation supporting threaded Schedule 40 piping. On November 2, 2022, the 'A' EDG fuel oil piping failed during routine testing, requiring it to be declared inoperable until repairs were implemented.

The NRC Senior Resident Inspector has been notified.

Corrective actions: VC Summer has compensatory measures in place and is scheduled to implement a modification during the first quarter of 2024.

The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:

In addition to VC Summer, it was discussed via phone that Farley has a similar design for its on-skid EDG fuel oil system and potentially might be affected by this Part 21 report. No other sites have been discussed at this time.

The EDG manufacturer is: Fairbanks-Morse Corp. EDG Model: Colt-Pielstick 12-Cylinder PC-2.2

VC Summer POC for additional information: Justin Bouknight, Licensing Engineer, (803) 941-9828, justin.bouknight@dominionenergy.com.