Event Notification Report for June 14, 2023

AGREEMENT STATE REPORT - STOLEN DENSITY GAUGE

The following information was provided by the New York State Department of Health (the Department) via fax:

"The licensee reported to the Department that a portable moisture density gauge had been stolen (Humboldt Scientific, Inc., model 5001 EZ, S/N 9909, Isotope: Am-241/Be (S/N: K833-19) & Cs-137 (S/N: Q1676), activity (when new): Am-241/Be 44mCi & Cs-137 11 mCi).

"An authorized user working under the license removed the gauge from the permanent storage location on June 6, 2023, with the intent to store it in a company van overnight to deliver it to a temporary jobsite in the morning of June 7, 2023. At around 0600-0700 [EDT] on June 7, 2023, the authorized user looked outside and did not see the van, so they contacted the New York Police Department and the Radiation Safety Officer. The Radiation Safety Officer indicated that the gauge was stored in the back of the van overnight. The gauge case was locked, and was secured to the floor of the van by chain, so it was stolen along with the van.

"Currently, the location and status of the gauge is unknown. Any updates to this event will be provided as soon as possible."

New York Event number: NY-23-05

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 - STOLEN AND RECOVERED MOISTURE DENSITY GAUGE

The following is a summary of information provided by Oregon Health Authority via phone and email:

On the evening of 6/6/23, a licensee's vehicle containing a Troxler moisture density gauge (44 mCi Am/Be, 9 mCi Cs-137) was stolen. The vehicle was equipped with a GPS location device which allowed Oregon State Police to recover the vehicle and the moisture density gauge within two hours. The gauge was returned to the licensee undamaged. There was no exposure to the public.

Oregon event number: RPS 23-0023

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

ACCIDENT MITIGATION - HIGH PRESSURE COOLANT INJECTION DECLARED INOPERABLE

The following information was provided by the licensee via email:

"At 2333 EDT on June 12, 2023, the division 2 Mechanical Draft Cooling Tower (MDCT) Fan `D' was declared inoperable due to a trip of the fan while running in high speed. The MDCT fans are required to support operability of the Ultimate Heat Sink (UHS). The UHS is required to support operability of the division 2 Emergency Equipment Cooling Water (EECW) system. The EECW system cools various safety related components, including the High-Pressure Coolant Injection (HPCI) system room cooler. An unplanned HPCI inoperability occurred based on a loss of the HPCI room cooler. The cause of MDCT Fan `D' trip is currently unknown with trouble shooting being developed for remediation of the condition. This report is being made pursuant to 10 CFR 50.72(b)(3)(v)(D) based on an unplanned HPCI inoperability.

"The NRC Senior Resident Inspector has been notified."