Event Notification Report for November 03, 2023

AGREEMENT STATE REPORT - PATIENT UNDERDOSE

The following information was provided by the North Dakota (ND) Department of Environmental Quality (DEQ) via telephone and email:

"The ND DEQ received a call from Innovis Health, LLC, Fargo, North Dakota, (ND License No. 33-02604-01) at 0945 CDT on October 26, 2023, informing the ND DEQ of a possible medical event (10 CFR 35.3045(a)(1)) which occurred on October 25, 2023. The event involved a patient scheduled to receive a prescribed therapy dose of 120 Gy of yttrium-90 Theraspheres microspheres. During the line check while attempting to administer the microspheres, the licensee experienced some difficulties, stopped the procedure, and noticed a higher-than-normal radiation reading of the delivery system and associated materials. After measuring these materials, it appeared the patient received 41.7 Gy to the target site (liver). Initial imaging of the patient directly following the procedure did not show activity around the target area and surface radiation readings of the patient in this area was 0.06 mR/hr. At this time, the licensee was questioning if any of the dose was administered. The licensee contacted the manufacturer the same day regarding the event.

"The licensee also noted increased radiation activity in other materials used in the procedure. The radiation survey reading of these materials was 140 mR/hr. The license was researching a way to calculate the amount of activity that may have been in these additional materials.

"Further viewing of the images of the upper abdomen of the patient by the Interventional Radiologist (IR) demonstrated a very faint outline of the right lobe of the liver (the intended treatment area). This indicated a very small amount of the dose was delivered. The IR discussed everything with the patient before the patient had left the recovery area. There were no immediate adverse health effects, and the IR would monitor the patient for the next two weeks (about five half-lives)."

A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.

AGREEMENT STATE - LOST CATEGORY 4 SOURCE

The following information was provided by the Ohio Department of Health (ODH) via email:

"ODH received a notification last night [on 26 October, 2023], that NDC Technologies, Inc. (NDC) discovered a 25 mCi Americium-241 (Am-241) source was missing from their inventory. NDC is located in Dayton.

"The licensee has conducted three inventories of all sources, reviewed all shipping logs, and have searched (both visually and with a survey meter) areas, floors, and drawers where devices are built and stored.

"The source may have mistakenly been put into a trashcan or sent, still mounted in the sodium iodine crystal, for disposal. The last disposal was on July 12, 2023, and the licensee has contacted the disposal company and will speak with them further today.

"ODH will be sending an inspector to further investigate."

NMED report number: OH230010

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: 11/3/2023

EN Revision Text: FALSE NEGATIVE ON BLIND PERFORMANCE SAMPLE

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

"On October 31, 2023, at 0800 CDT, River Bend Station discovered that the results of a blind performance sample provided to an Health and Human Services (HHS)-certified testing facility were inaccurate (false negative). This report is being made in accordance with 10 CFR 26.719(c)(3). The HHS-certified testing facility has been informed of the error."

The licensee notified the NRC resident inspector.

* * * RETRACTION AT 0946 EDT ON NOVEMBER 2, 2023 FROM MICAH NAVARRO TO SAMUEL COLVARD * * *

"On November 1, 2023, River Bend Station personnel were informed by the HHS-certified testing facility that the cut-off levels used for analysis of the performance testing sample in question were the correct (higher) cut-off levels currently being used by the licensee. This resulted in a correct negative test.

"The performance testing sample sent to the HHS-certified testing facility was purchased for use based on the new lower cut-off levels in accordance with the new fit for duty (FFD) rule being implemented by the licensee on November 6, 2023. Because the higher confirmatory cut-off levels were used at the HHS-certified testing facility, the results provided were correct.

"The NRC Resident Inspector has been notified."

Notified R1DO (Eve) and FFD Group (email)

MANUAL REACTOR TRIP DUE TO TRIP OF REACTOR FEED PUMP

The following information was provided by the licensee via email:

"At 0648 EDT on 11/1/23, with Unit 2 in MODE 1 at 56 percent power, the reactor was manually tripped due to a trip of the 'B' reactor feed pump (RFP). The 'A' RFP had been previously isolated due to a leak. Closure of containment isolation valves (CIVs) in multiple systems and the actuation of high pressure coolant injection (HPCI) and reactor core isolation cooling (RCIC) occurred as a result of reaching the actuation setpoint on reactor water level as designed. The trip was not complex, with all safety systems responding normally post-trip.

"Operations responded and stabilized the plant. Reactor water level is being maintained with RCIC. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves. Unit 1 was not affected.

"Due to the emergency core cooling system (ECCS) discharging into the reactor this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(A). Also, the reactor protection system actuation while critical is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B). Additionally, it is reportable under 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of CIVs, RCIC and HPCI.

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

The Resident Inspector was notified.

CONTROLLED SUBSTANCE FOUND IN PROTECTED AREA

The following information was provided by the licensee via email:

"On October 31 at 1856 CDT, Prairie Island Nuclear Generating Plant personnel identified a prohibited item (alcohol) in a kitchen area located within the protected area. An 'Extent of Condition' search was performed of all other protected area kitchen areas, no additional prohibited items were found.

"The NRC Resident has been notified."

FALSE NEGATIVE AND POSITIVE ON BLIND PERFORMANCE SAMPLE

The following information was provided by the licensee via email:

"On November 2, 2023, at 0715 CDT, it was discovered that the results of a blind performance specimen provided to a Health & Human Services (HHS)-certified testing facility were not as expected. The blind specimen results indicated a false negative for MDA/MDMA and a false positive for amphetamines.

"Investigation is ongoing to determine if the results are accurate.

"This report is being made in accordance with 10 CFR 26.719(c)(2) and 10 CFR 26.719(c)(3).

"The NRC Resident Inspector has been notified by the licensee."

AGREEMENT STATE - STOLEN SOURCE

The following information was provided by the Wisconsin Department of Health Services (the Department) via email and telephone:

"On October 30, 2023, at 1830 CDT, the Department received a notification from the licensee that a CPN MC1DRP gauge containing up to 10 mCi of Cesium-137 and 50 mCi of Americium-241 had been out of their control since 1435 CDT when the vehicle containing the gauge was stolen. Local law enforcement has been notified. The Department will monitor and update."

Event Report Number: WI230019

* * * UPDATE FROM MEGAN SHOBER TO DAN LIVERMORE BY EMAIL ON 10/31/2023 * * *

"The missing gauge was recovered around 0800 [CDT] on October 31, 2023 and is now in the custody of the licensee. The gauge had no visual damage. The Department will follow up with the licensee."

Notified R3DO (Dickson), ILTAB and NMSS Events notification by 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

OFFSITE NOTIFICATION - PRESS RELEASE

The following information was provided by the licensee via email:

"A press conference is being held by the Oconee County Sheriff's office today at 1530 EDT in which Duke Energy will be present and may participate regarding the facts pertaining to an event that occurred outside the Oconee Nuclear Power Plant.

"The NRC Resident Inspector was notified.

"This is a four-hour report per 10 CFR 50.72(b)(2)(xi) for any event or situation for which a news release is planned or notification to other government agencies has been or will be made which is related to heightened public or government concern.

"The event is not significant with respect to the health and safety of the public."

CONTROLLED SUBSTANCE FOUND IN PROTECTED AREA

The following information was provided by the licensee via email:

"On 11/03/2023 at 2231 CDT, a security officer found 2 bottles of vanilla extract in the protected area. One bottle was a 1.5 ounce size with a trace amount of vanilla in the bottle, the other bottle was a 4.5 ounce size with approximately 1 ounce of vanilla. Alcohol was identified as an ingredient on the label. It was determined the vanilla extract is 35 percent alcohol by volume (ABV), above the 0.5 percent ABV considered low alcohol content. Security personnel took custody of the bottles of vanilla extract."

The NRC Resident Inspector has been notified.

DEGRADED CONDITION - TWO STEAM GENERATOR TUBE FAILURES IDENTIFIED

The following information was provided by the licensee via email:

"At 1033 CST on November 5, 2023, while in a refueling outage, it was determined that Waterford Steam Electric Station, Unit 3, did not meet the performance criteria for steam generator structural integrity in accordance with Technical Specification 6.5.9.b.1, Steam Generator Program, due to two tube failures in the number 1 steam generator. The condition was identified during performance of in-situ pressure testing.

"The affected tubes will be plugged.

"The plant is currently stable with all fuel in the spent fuel pool. Decay heat is being removed by normal spent fuel cooling system operation.

"This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(ii)(A) as a degraded condition.

"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."