Event Notification Report for June 15, 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

AGREEMENT STATE REPORT - STUCK OPEN SHUTTER

The following is a summary provided by the Illinois Emergency Management Agency (the Agency) via email:

On June 8, 2023 at 0920 CDT, the licensee (Roquette America Inc.) in Gurnee, IL, advised the Agency of a stuck open shutter (Ohmart fixed gage, 15 mCi, Cs-137). The reportable equipment failure was discovered during a routine shutter check. The Radiation Safety Officer confirmed that the gauge will remain in its mounted condition attached to a small sectional tank and that operators were immediately advised of the inoperable shutter. The manufacturer was notified and confirmation for a site visit to repair the shutter is pending. No personnel exposures occurred as a result. The incident was reported to the Agency within 24 hours as required under 32 Ill. Adm. Code 340.1220(c)(2). Agency staff will perform a reactionary inspection to ensure adequate control of the gauge and area until the shutter is repaired.

Illinois event number: IL230012

AGREEMENT STATE REPORT - LOST MOISTURE DENSITY GAUGE

The following is a summary of information provided by the Illinois Emergency Management Agency (the Agency) via email:

On 6/8/23, the licensee (SKS Engineers) was transporting a moisture density gauge (Troxler Model 3440, serial number 30126, 40 mCi Am-241/Be, 8 mCi Cs-137), and it fell out of the truck. The truck bed door was found down upon arrival at the work location. The licensee was transporting the device within its case from Decatur, IL to a work location in Mt. Zion, IL which represented a 9.4-mile path.

Illinois event number: IL230013

* * * UPDATE ON 6/9/2023 AT 1627 EDT FROM GARY FORSEE TO IAN HOWARD * * *

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

"The gauge has been located and returned to safe storage. A member of the public located the gauge and facilitated its return to the licensee. The gauge was undamaged and still contained within the locked case."

Notified R3DO (Nguyen), NMSS (email), and ILTAB (email).

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: 6/15/2023

EN Revision Text: 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."

OFFSITE NOTIFICATION - OIL RELEASE

The following information was provided by the licensee via email:

"On 6/13/23 at approximately 1030 PDT, testing was being conducted on a lubricating oil system which interfaces with a cooling water system that has a pathway to the Columbia River. Due to an equipment failure, an indeterminate amount of oil leaked into the cooling water system, with a maximum potential loss of 300 gallons of oil. At 1230 PDT, an oil sheen was identified on the water basin which is the suction and discharge for this cooling system. The discharge pathway to the river was isolated at 1235 PDT. Investigation at the Columbia River showed no signs of oil sheen. This is being reported to offsite agencies under the Columbia Generating Station NPDES [National Pollutant Discharge Elimination System] Permit section S3.E.b. l and RCW [Revised Code of Washington] 90.56.280 due to the discharge of oil which has the potential to cause a sheen on the surface of the river.

"This condition is being reported pursuant to 10CFR50.72(b)(2)(xi) for news release or notification of other government agencies related to health and safety of the public or protection of the environment. Notifications to off-site agencies were performed at 1842 PDT on 6/13/2023.

"United States Coast Guard National Response Center Incident Report# 1369989.

"Washington State Emergency Management Division Report# 23-2245.

"Discharge pathway will remain secured until on-site cooling water system has been remediated.

"The NRC resident has been informed."