Event Desc|En No|Site Name|Licensee Name|Region No|City Name|State Cd|County Name|License No|Agreement State Ind|Docket No|Unit Ind1|Unit Ind2|Unit Ind3|Reactor Type|Nrc Notified By|Ops Officer|Notification Dt|Notification Time|Event Dt|Event Time|Time Zone|Last Updated Dt|Emergency Class|Cfr Cd1|Cfr Descr1|Cfr Cd2|Cfr Descr2|Cfr Cd3|Cfr Descr3|Cfr Cd4|Cfr Descr4|Staff Name1|Org Abbrev1|Staff Name2|Org Abbrev2|Staff Name3|Org Abbrev3|Staff Name4|Org Abbrev4|Staff Name5|Org Abbrev5|Staff Name6|Org Abbrev6|Staff Name7|Org Abbrev7|Staff Name8|Org Abbrev8|Staff Name9|Org Abbrev9|Staff Name10|Org Abbrev10|Scram Code 1|RX CRIT 1|Initial PWR 1|Initial RX Mode1|Current PWR 1|Current RX Mode 1|Scram Code 2|RX CRIT 2|Initial PWR 2|Initial RX Mode 2|Current PWR 2|Current RX Mode 2|Scram Code 3|RX CRIT 3|Initial PWR 3|Initial RX Mode 3|Current PWR 3|Current RX Mode 3|Event Text| Agreement State|57747|SC Dept of Health & Env Control|Medical University Hospital|1|Charleston|SC||081|Y||||||Adam Gause|Brian P. Smith|06/06/2025|12:14:00|06/05/2025|0:00:00|EDT|9/18/2025 2:20:00 PM|Non Emergency| |Agreement State|||||||Henrion, Mark|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/19/2025

EN Revision Text: AGREEMENT STATE REPORT - MEDICAL EVENT The following report was received via phone and email from the South Carolina Department of Health and Environmental Control (the Department): "The licensee informed the Department via telephone on June 6, 2025, that a medical event had occurred on June 5, 2025. The licensee reported that a Y-90 microsphere procedure resulted in 71 percent of the prescribed dose being administered to a patient (a difference of 29 percent), and that a spill also occurred during the administration. The licensee is reporting that the spill originated from the delivery system and likely caused the medical event. "The licensee reported that the spill in the administration area was cleaned, and the area was released. The licensee is not reporting any overexposures or ongoing health or safety concerns. The referring physician was notified on June 6, 2025. This event is still under investigation by the Department." 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. South Carolina Event Report ID Number: TBD * * * UPDATE ON 06/27/2025 AT 0904 EDT FROM JACOB PRICE TO ROBERT THOMPSON * * * The following is a summary of information provided by the South Carolina Department of Environmental Services (the Department) via email: In the initial verbal notification, the licensee indicated that the patient received a dose of 29 percent less than prescribed. The written report submitted on June 6, 2025, indicates that the patient received a dose of 31.6 percent less than prescribed. This event is still under investigation. South Carolina Event Number: SC250007 Notified R1DO (Arner), NMSS Events (email) * * * UPDATE ON 09/18/2025 AT 1414 EDT FROM JACOB PRICE TO ERNEST WEST * * * The following report was received via email from the South Carolina Department of Health and Environmental Control (the Department): "Department inspectors conducted an on-site visit between July 2 and July 3, 2025. Interviews with the licensee's representatives were consistent with the details outlined in the written report. The licensee has provided additional training to the authorized user. "This event/investigation is considered closed." South Carolina Event Number: SC250007 Notified R1DO (Schussler), NMSS Events (email) | Agreement State|57818|Illinois Emergency Mgmt. Agency|Isomedix Operations, Inc.|3|Libertyville|IL||IL-01123-02|Y||||||Robin G. Muzzalupo|Josue Ramirez|07/17/2025|16:20:00|07/16/2025|0:00:00|CDT|9/12/2025 12:47:00 PM|Non Emergency| |Agreement State|||||||Nguyen, April|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/15/2025

EN Revision Text: AGREEMENT STATE REPORT - EQUIPMENT FAILURE The following report was received by the Illinois Emergency Management Agency (the Agency) via phone and email: "The Agency was contacted this afternoon (7/17/25) by Isomedix Operations, Inc. in Libertyville, IL to advise of a reportable equipment failure. "According to the report, the radiation monitor used to perform required radioactivity measurements of the pool water (e.g., leak testing of the pool irradiator sources) failed at some point in the last month. It was discovered yesterday, 7/16/25, during a routine monthly check when the system failed to alarm when tested with a check source. "Replacement monitoring equipment was installed, and the pool water was determined to be free of radioactivity. This incident had no impact to public or worker safety, nor is there any indication of leaking sources. However, the reportable criteria in 32 Illinois Administrative Code 340.122(c)(2) appear to have been met. The licensee met the 24-hour reporting requirement, and the Agency will report the matter to the NRC shortly. "Inspectors will conduct a reactive inspection to determine root cause and corrective action." Illinois Item Number: IL250028 * * * UPDATE ON 09/12/2025 AT 1142 FROM KIM STICE TO ROBERT THOMPSON * * * The following information was provided by the Illinois Emergency Management Agency (the Agency) via email: "On 7/17/25, the Agency conducted a reactive inspection via phone with the [Isomedix] corporate radiation safety office and confirmed that identical functioning monitoring equipment was installed immediately after the failure was identified, and that the faulty instrument was to be sent to the manufacturer for examination and to determine a possible failure cause. Additionally, the corporate radiation safety officer reviewed additional tests conducted on 7/16/25 (surveys of the deionization tanks conducted and pool water sample collected and analyzed for radioactive contamination) to confirm no leaking of sources, all with negative results. "On 8/20/25, inspectors followed up during a routine inspection and confirmed that replacement monitoring equipment had been installed and was calibrated and functional. The licensee advised that they were still waiting on a report from the manufacturer to determine if any additional corrective measures would be instituted. The licensee stated that any information received would be shared with the Agency. Regardless, the Agency will follow up at the time of next inspection." Notified R3DO (Santiago) (email), NMSS Events Notification (email). | Part 21|57827|Curtiss Wright Flow Control Co.||3|Cincinnati|OH|||Y||||||Margie Hover|Kerby Scales|07/25/2025|9:47:00|05/21/2025|0:00:00|EDT|9/23/2025 10:33:00 AM|Non Emergency|21.21(a)(2)|Interim Eval Of Deviation|||||||Zurawski, Paul|R3DO|Part 21/50.55 Reactors, -|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/24/2025

EN Revision Text: PART 21 INTERIM REPORT OF DEVIATION The following is a synopsis of information provided by Curtiss-Wright (CW) via email: On 5/21/2025, Xcel Energy notified Curtiss-Wright about the failure of two NAMCO limit switches provided under CW project CJ21087 (tag number CJ2108701, serial numbers 01 and 04). The limit switches were dedicated by CW and shipped on 2/28/2025 to Xcel Energy. The switches failed a bench test performed by Xcel Energy, which aimed to verify that the contacts properly revert to their original state during spring return. Xcel Energy found that the contacts reverted to their original state prior to the audible click/snap, which is supposed to indicate contact changeover. The two units were returned to Curtiss-Wright on 5/29/2025. The test result was fully duplicated on one of the switches. For the other switch (serial number 04), the switch contacts intermittently failed to return to the original state at all, requiring manual assistance to do so. On 6/26/2025, CW sent the parts to NAMCO for repair. CW retested the parts after the repair. Part 04 still had the same issue with failing to reset as noted earlier. That limit switch was returned to NAMCO for a full evaluation. CW anticipates an update to this notification with final results on 9/23/2025. Potentially affected U.S. nuclear power plants: unknown at the time of the notification. Contact Information: Mark Papke Quality Assurance Manager Curtiss-Wright 4600 East Tech Drive Cincinnati, OH 45245 mpapke@curtisswright.com * * * UPDATE ON 9/23/25 AT 0850 EDT FROM CURTISS-WRIGHT TO KAREN COTTON * * * The following information was provided by Curtiss-Wright (CW) via email: On 6/26/2025 CW sent the relays to NAMCO for repair and the parts were returned to CW on June 26. CW retested the limit switches and one failed for the same issue as noted earlier, the failed limit switch was returned to NAMCO for a full evaluation. The failure is still under investigation and CW has been in communication with NAMCO, the manufacturer. Once the evaluation is complete this report will be updated. CW anticipates an update to this notification with final results on 11/24/2025. Notified R3DO (Szwarc) and the Part 21/50.55 Reactors group | Agreement State|57863|SC Dept of Health & Env Control|Sylvamo North America, LLC|1|Eastover |SC||341|Y||||||Jacob Price|Robert A. Thompson|08/12/2025|16:11:00|08/12/2025|0:00:00|EDT|9/10/2025 8:34:00 AM|Non Emergency| |Agreement State|||||||Bickett, Brice|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/10/2025

EN Revision Text: AGREEMENT STATE REPORT - STUCK OPEN GAUGE SHUTTER The following information was provided by the SC Department of Environmental Services (the Department) via email: "The licensee informed the Department via telephone on August 12, 2025, that a fixed gauging device was disabled or failed to function as designed. The licensee reported that the brass shaft that operates the shutter of a fixed gauging device broke in the open position. The device is located on a process vessel. The licensee reported that a representative from a licensed service provider is on-site and is in the process of shielding the device so that it can be removed from service and placed in storage. "The device is a 5 millicurie cesium-137 Berthold Systems, LLC model 7440. "The licensee did not report any overexposures or ongoing health/safety concerns. "This event is still under investigation by the Department." * * * UPDATE ON 09/10/25 AT 0830 EDT FROM JACOB PRICE TO ERIC SIMPSON * * * The following information was provided by the SC Department of Environmental Services (the Department) via email: "On August 13, 2025, the Department conducted an on-site investigation. The details of the event were consistent with the licensee's initial notification and subsequent written report. The Department performed ambient dose rate and removable contamination surveys, which revealed no abnormal readings or contamination. The licensee has contacted vendors and consultants to replace the affected device. "On September 8, 2025, the Department received the 30-day written report. The details of this report were consistent with the information obtained during the on-site visit and interviews. "This event remains under investigation by the Department." | Agreement State|57870|WA Office of Radiation Protection|WA Department of Transportation|4|Gig Harbor|WA||WN-L071-1|Y||||||Dane Blakinger|Adam Koziol|08/14/2025|16:16:00|08/14/2025|1:00:00|PDT|9/10/2025 6:48:00 PM|Non Emergency| |Agreement State|||||||Agrawal, Ami|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/11/2025

EN Revision Text: AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE The following information was provided by the Washington State Department of Health, Office of Radiation Protection (WADOH) via email: "At 0100 PDT [on 08/14/2025] an intoxicated driver collided with several pieces of equipment in a roadside construction zone, including a nuclear portable gauge. This event occurred on SR 16 eastbound directly before the Tacoma Narrows Bridge in Gig Harbor, Washington. The nuclear gauge that was damaged was a licensed Troxler model 3450. The damage appeared to consist of the handle being separated from the body of the gauge. The gauge was not in use at the time. "The radiation safety officer (RSO) cordoned off the area and prevented individuals from coming within 150 feet of the source. The timeline of this event is still being investigated. The RSO contacted WADOH at 0205 PDT. Emergency response, consisting of fire and hazmat personnel, arrived on site at approximately 0500 equipped with a Geiger Mueller radiation detection instrument. Two individuals donned Tyvek [suits] and proceeded towards the source, with WADOH directing their response via telephone communication. The highest radiation levels were 15 mR/hr, measured approximately one foot from the source, which indicated that the sources were likely still within the shielded position. The two emergency responders used a shovel to pick the source handle and gauge body up and place the pieces back into the Troxler type 'A' shipping container. This took approximately 8 minutes and the dose received is assumed to be less than 2 mrem each. The container was then closed, and additional radiation surveys were taken. The on contact dose on the exterior of the container was 2 mR/hr, which is below the expected dose rate while within the container. WADOH arrived on-site at approximately 0730 PDT and took contamination surveys on the source assembly, which was visibly intact. No contamination was detected. "Under Troxler's guidance, the licensee transported the material within the type 'A' container back to their calibration facility to perform leak tests. Leak tests have been performed and are being sent out for counting prior to shipment back to Troxler. The gauge will remain in a secured position until it is shipped back to Troxler. The licensee will follow Troxler guidance and all applicable DOT regulations. A full report will be delivered to WADOH within 30 days. WADOH will continue conversations with the licensee to determine the full scope of the situation, and additional details will be provided as they are found." Gauge sources: 9 mCi Cs-137, 44 mCi Am-241/Be, and 66 microcuries Cf-252 WA Incident Number: WA 25-009 * * * UPDATE ON 09/10/2025 AT 1759 EDT FROM DANE BLAKINGER TO JOSUE RAMIREZ * * * The following information was provided by the Washington State Department of Health, Office of Radiation Protection (WADOH) via email: "Dose assessment: Four responders were on-site. Two responders were in a radiation field of up to 15 mR/hr for 8 minutes. The conservative estimate is a 2 mrem total effective dose equivalent each. Dose to WADOH responder was less than 1 mrem. "[As part of corrective actions,] WADOH has generated job aids for responding to portable gauge emergencies. Additional procedural changes are being developed. Focused training on similar emergencies is being developed to ensure office-wide readiness. "The licensee will internally audit all emergency procedures for portable gauge license, including updating the gauge transportation forms with radiation safety officer personal phone number. All required traffic control was in place. "No further actions required. Corrective actions will be verified during a routine inspection." Notified R4DO (Deese) and NMSS Event Notification (email) | Agreement State|57885|Louisiana Radiation Protection Div|Smitty's Supply Inc.|4|Roseland|LA||GL-590|Y||||||Karen Bugard|Adam Koziol|08/26/2025|8:50:00|08/22/2025|13:00:00|CDT|8/26/2025 8:58:00 AM|Non Emergency| |Agreement State|||||||Dixon, John|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|Allen, Logan|NMSS|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - POTENTIAL GAUGE DAMAGE The following information was provided by the Louisianna Department of Environmental Quality (LDEQ) via email: "On August 22, 2025, the Louisiana State Police notified LDEQ that Smitty's Supply Inc. in Roseland had an explosion and was on fire. The explosion and fire resulted in significant damage to the facility. "At the time of the incident, three nuclear gauge devices, each containing 100 mCi of Americium 241, were present onsite. These gauges could potentially be affected. The fire was finally extinguished on August 25, 2025. An entry team, including a radiation inspector, will enter the facility today, August 26, 2025, to verify/confirm the status of the gauges and radioactive material." Gauges information: Gauge 1: Industrial Dynamics, Device Model No - FT-50B Device Serial Number 117658 Source - Am-241, 100 mCi Source Model No - XN240 Source Serial No - Do not have at this time Gauge 2: Industrial Dynamics, Device Model No - FT-50B Device Serial Number 117565 Source - Am-241, 100 mCi Source Model No - XN240 Source Serial No - Do not have at this time Gauge 3: Industrial Dynamics, Device Model No - FT-50B Device Serial Number 117474 Source - Am-241, 100 mCi Source Model No - XN240 Source Serial No - Do not have at this time LA Event Number: LA20250007| Agreement State|57886|New Mexico Rad Control Program|Chino Mines Company |4|Bayard|NM||GA 045-50|Y||||||Bobby Bicknell|Robert A. Thompson|08/27/2025|13:12:00|08/26/2025|0:00:00|MDT|8/27/2025 1:15:00 PM|Non Emergency| |Agreement State|||||||Dixon, John|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - FIXED GAUGE SHUTTER MISSING The following is a summary of information provided by the New Mexico Radiation Control Bureau via phone and email: During a routine inspection, the licensee discovered that the normally open shutter on a fixed gauge installed on a pipeline was missing. The gauge remains installed and is operating normally. All planned maintenance in the area of the gauge has been suspended. The licensee has been instructed to obtain the assistance of properly trained and qualified personnel to assist with corrective actions. Gauge: Texas Nuclear model 5190, s/n B3309 Source: Cs-137, 100 mCi | Agreement State|57887|Kentucky Dept of Radiation Control|University of Kentucky|1|Lexington|KY||202-049-22|Y||||||Russell Hestand|Robert A. Thompson|08/27/2025|15:26:00|08/22/2025|0:00:00|CDT|8/27/2025 4:03:00 PM|Non Emergency| |Agreement State|||||||Carfang, Erin|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - MEDICAL EVENT The following information was provided by the Radiation Health Branch of the Kentucky Department for Public Health and Safety via email: "On August 26, 2025, the University of Kentucky (UK) Health Center radiation safety officer became aware of a situation that represents what UK believes are a series of possible medical events which occurred from August 22 to August 25, 2025, related to nuclear medicine administrations requiring written directives. Within this date range, a new faculty physician who was in the process of becoming approved as an authorized user (AU) through the UK radiation safety committee (RSC) signed 5 written directives (3 for diagnostic I-131 procedures with a nominal activity of 5 mCi, and 2 for Lu-177 therapy at a 100 mCi activity) despite not having yet received approval under the UK medical broad scope license from the UK RSC. The cases have all been reviewed by a senior AU and no patient harm has been identified. The physician in question has since received approval from the UK RSC. Notifications are in process as required. "This event is under investigation. University of Kentucky will complete an assessment and implement corrective actions. "The written report will follow as required in 15 days." 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. | Fuel Cycle Facility|57888|American Centrifuge Plant|American Centrifuge Operating, LLC|2|Piketon|OH|Pike|SNM-2011|Y|70-7004||||Uranium Enrichment Facility|Jeff Spires|Josue Ramirez|08/27/2025|17:11:00|08/27/2025|14:50:00|EDT|8/27/2025 5:27:00 PM|Non Emergency|PART 70 APP A (c)|Offsite Notification/News Rel|||||||Bacon, Daniel|R2DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|CONCURRENT REPORT FOR OFFSITE NOTIFICATION The following is a summary of information provided by the licensee via phone and email: Centrus American Centrifuge Operating (ACO) received notification from a Fluor-BWXT Portsmouth (FBP) environmental technician supervisor that the chlorine level at outfall '013' was at 0.063 mg/L. This exceeds the National Pollutant Discharge Elimination System permit limit on total chlorine at outfall '013' of 0.05 mg/L. Centrus ACO notified the Ohio Environmental Protection Agency at 1450 EDT. Elevated chlorine levels at outfall '013' were initially noted and reported on August 18, 2025, under EN 57874. Centrus ACO has since determined that a sanitary line break that went into a holding pond is the cause of the elevated chlorine levels. Elevated chlorine levels observed today are attributed to residual chlorine upstream of the outfall. This report is in accordance with condition notification #12816. The NRC regional office was notified. | Non-Agreement State|57889|Weyerhaeuser|Weyerhaeuser|4|Columbia Falls|MT||25-15644-01|N||||||Hunter Kent|Sam Colvard|08/28/2025|17:40:00|08/28/2025|9:48:00|MDT|8/28/2025 5:55:00 PM|Non Emergency|30.50(b)(2)|Safety Equipment Failure|||||||Dixon, John|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|STUCK OPEN SHUTTER The following is a summary of information provided by the licensee via phone: On August 28, 2025, an authorized user notified the radiation safety officer that the shutter of a fixed Ohmart/Vega SHF1A source holder with a 50 mCi Cs-137 source could not be closed while preparing for a routine inspection of a process vessel. The entrance to the process vessel was barricaded. A do-not-operate tag was placed on the source holder shutter handle. Communication of the event to facility personnel is in progress. The manufacturer stated that the model of source holder is no longer in production and must be replaced. There were no overexposures due to this event. | Agreement State|57890|Texas Dept of State Health Services|Exxon-Mobil Corporation|4|Mont Belvieu|TX||L 03119|Y||||||Art Tucker|Robert A. Thompson|08/28/2025|21:28:00|08/27/2025|0:00:00|CDT|8/28/2025 9:29:00 PM|Non Emergency| |Agreement State|||||||Dixon, John|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - STUCK OPEN GAUGE SHUTTER The following information was provided by the Texas Department of State Health Services (the Department) via email: "On August 28, 2025, the Department was notified that the shutter on a Vega SHF2C-45 nuclear gauge had failed in the open position during routine testing. The gauge contains a 500 mCi cesium-137 source. Open is the normal position for the shutter. The licensee reported there is no risk of additional radiation exposure to members of the general public or radiation workers, due to this on/off mechanism failure. Additional information will be provided as it is received in accordance with SA-300." Texas incident number: 10219 NMED number: TX250039 | Agreement State|57891|New York State Dept. of Health|Gentech Scientific, LLC|1|Arcade|NY||C5661|Y||||||Nathaniel Kishbaugh|Ian Howard|08/29/2025|12:46:00|08/28/2025|0:00:00|EDT|8/29/2025 12:59:00 PM|Non Emergency| |Agreement State|||||||Carfang, Erin|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LEAKING SOURCE The following information was provided by the New York State Department of Health (NYSDOH) Bureau of Environmental Radiation Protection (BERP) via email: "NYSDOH BERP received a phone call from the U.S. Nuclear Regulatory Commission (U.S. NRC) on August 29, 2025, at approximately 1045 EDT to report a call they received from Gentech Scientific, LLC, a NYSDOH radioactive material licensee, to report a leaking electron capture device (ECD) source. NYSDOH contacted Gentech Scientific, LLC on August 29, 2025, at approximately 1100 to follow up on this event. The representative from Gentech Scientific confirmed that a leak test was performed and analyzed by the National Leak Test Center (NYSDOH radioactive material license number C2323) the day prior (August 28, 2025) on entrance port, housing, and exit ports of an Agilent 58-90 ECD (serial number K3818) containing 15 millicuries of Ni-63 (foil source). "Only the entrance port sample returned a result considered leaking in accordance with 10 CFR 31.5(c)(5) at 6789 pCi. The housing and exit port samples did not exceed this threshold. "Following Gentech Scientific, LLC's awareness of this event, the affected device/source was carefully placed into isolation/quarantine in laboratory storage area, posted with signage, and licensee staff were informed on this event and instructed to keep away from this device. This leaking source did not result in the contamination of equipment, personnel, or surfaces. "Gentech Scientific, LLC has notified Agilent of this leaking source and will be seeking options to return this device to Agilent or otherwise dispose of the source via transfer to a licensed waste broker. Leak test copies have been provided to NYSDOH. "NYSDOH BERP is actively monitoring this event under Incident No. 1542. Additional information will be provided to NMED once available."| Agreement State|57892|New Mexico Rad Control Program|Kaseman Presbyterian Hospital|4|Albuquerque|NM||MI-114-4|Y||||||Robert Bicknell|Ian Howard|08/29/2025|13:35:00|08/28/2025|0:00:00|MDT|8/29/2025 1:35:00 PM|Non Emergency| |Agreement State|||||||Dixon, John|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - MEDICAL EVENT The following information was provided by the New Mexico Environment Department Radiation Control Bureau via email: "One of our licensees Kaseman Presbyterian Hospital reported a medical event of a patient being administered 5 mCi of Ga-68 dotatate rather than Ga-68 PSMA [prostate-specific membrane antigen] on 8/28/2025, in Albuquerque New Mexico, license number MI-114-4. Written report is expected in 15 days. Further details will be provided as they become available." 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|57894|WA Office of Radiation Protection|Terracon Consultants, Inc|4|Seattle|WA|King|WN-I0507-1|Y||||||Dane Blakinger|Ian Howard|08/31/2025|17:58:00|08/31/2025|0:00:00|PDT|9/29/2025 6:28:00 PM|Non Emergency| |Agreement State|||||||Dixon, John|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/30/2025

EN Revision Text: AGREEMENT STATE REPORT - STOLEN DENSITY GAUGE The following information was provided by the licensee via email: "On the morning of 8/31/2025, an employee of Terracon Consultants discovered that a portable nuclear gauge (Troxler model 3440) was stolen from their vehicle overnight. The gauge was stored in the bed of a pickup truck that had a canopy cover. The gauge was also chained to the bed of the truck. The vehicle was parked inside of a parking garage with camera surveillance. Unfortunately, the cameras were [decoys] and were not operating. "An individual gained access to the gauge by breaking through a canopy window and using a bolt cutter to cut the chain securing the Troxler gauge. The density gauge was the only nuclear material stolen. A toolbox was also taken which contained various non-nuclear equipment. "The employee contacted Seattle Police, who at 1401 [PDT], had not arrived on scene to generate a report. The licensee will ensure that a report is generated and work with local law enforcement to recover the gauge. A full report will follow within 30 days." Device Information: Manufacturer: Troxler Model: CDCW556 Serial Number: 14086 Source Information: Manufacturer: AEA Technology/QSA Model: CDCW556 (Cs-137) and AMNV.997 (Am-241:Be) Isotopes and Activity: 9 mCi of Cs-137, 44 mCi of Am-241:Be, 0.066 mCi of Cf-252 * * * UPDATE ON 09/29/2025 AT 1747 EDT FROM DANE BLAKINGER TO JOSUE RAMIREZ * * * The Washington State Department of Health, Office of Radiation Protection provided a 30-day written report regarding the incident (WA-25-010). The gauge has not been located at this time. The licensee has an open case with the Seattle Police Department. In addition, the gauge is being actively looked for by the licensee. Notified R4DO (Vossmar), NMSS Event Notification (email), ILTAB (email), and CNSC (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| Agreement State|57895|Texas Dept of State Health Services|Chevron Phillips Chemical Company|4|Conroe|TX||04825|Y||||||Sindiso Ncube|Karen Cotton|09/03/2025|14:22:00|09/03/2025|0:00:00|CDT|9/3/2025 3:01:00 PM|Non Emergency| |Agreement State|||||||Roldan-Otero, Lizette|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - STUCK SHUTTER The following information was provided by the Texas Department of State Health Services (the Agency) via email: "On September 3, 2024, the Agency received notification from the licensee regarding a gauge with a stuck shutter. The gauge, a Ronan model SA1-F37, containing a 40 millicurie cesium-137 sealed source, is reportedly stuck in the open position. Open is the normal operating position. The licensee discovered the gauge failure during a routine planned maintenance exercise. According to the licensee, there is no risk of exposure to workers and members of the public. The licensee has contacted the manufacturer to repair the gauge. "Additional information will be provided in accordance with SA 300 reporting requirements." Texas Incident #: 10221 Texas NMED # TX250040 | Agreement State|57896|Louisiana Radiation Protection Div|Raba Kistner, Inc.|4|New Iberia|LA||LA-14485-L01|Y||||||Russell S. Clark II|Karen Cotton|09/03/2025|18:37:00|09/03/2025|15:15:00|CDT|9/15/2025 10:57:00 AM|Non Emergency| |Agreement State|||||||Roldan-Otero, Lizette|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/16/2025

EN Revision Text: AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE The following information was provided by the Louisiana Radiation Protection Division (LDEQ) via email: "On September 3, 2025, at approximately 1605 CDT, the radiation safety officer (RSO) for the licensee, Raba Kistner, Inc., notified LDEQ concerning an incident in which a Troxler model 3430 soil moisture density gauge, S/N 28457, was rolled over by a bulldozer. The incident occurred at the University of Louisiana at Lafayette New Iberia Research Center at approximately 1515 CDT. The RSO reported that during a direct transmission density measurement, in which the source was submerged in approximately eight inches of soil, the gauge was run over by the bulldozer. The gauge source rod was tilted in the soil approximately 45 degrees from the normal. It could not be determined if the source rod was bent, and no attempt was made to retract the density source into the safe position. The gauge possessed two sealed sources, an 8 mCi Cs-137 source, S/N 750-2469, and a 40 mCi Am/Be-241 source, S/N 47-25460. Both sources are approximately 28 years old. The gauge operator is currently maintaining an exclusion area of approximately 30 feet in radius about the gauge, which had a housing that was partially broken apart during the rollover. No radiation surveys have yet been performed of the gauge or surrounding area. The gauge manufacturer was contacted at time of reporting. The RSO will notify the LDEQ of incident status changes." Event report ID number: LA20250008 | Agreement State|57897|Arizona Dept of Health Services|Banner University Medical Center|4|Tucson|AZ||10-044|Y||||||Brian Goretzki|Robert A. Thompson|09/04/2025|1:58:00|08/25/2025|0:00:00|MST|9/4/2025 2:05:00 AM|Non Emergency| |Agreement State|||||||Roldan-Otero, Lizette|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|Einberg, Christian|NMSS|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - MEDICAL EVENT The following information was provided by the Arizona Department of Health Services (the Department) via email: "On September 3, 2025, the Department received notification from the licensee about a medical event involving a high dose rate treatment that occurred on August 25, 2025. The event was discovered on September 2, 2025, when the patient returned for a subsequent [fractional treatment]." "A written directive was created to deliver 4,000 cGy over 8 fractions to a scalp lesion with a 30 mm Valencia skin applicator. [A patient treatment simulation was conducted] on August 20, 2025, where the radiation therapist constructed a brain mask for immobilization that included an opening at the top of the head. This was done to allow placement of the skin applicator. On August 25, 2025, the authorized user identified a lesion that was superior to the lesion he had intended to treat, which was not biopsied. The wrong site was treated with 500 cGy by a 7.54 Ci Ir-192 source. The Department has requested additional information and continues to investigate the event." AZ Incident Number: 25-016 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|57898|Arizona Dept of Health Services|Quality Testing, LLC|4|Fountain Hills|AZ||07-491|Y||||||Brian Goretzki|Robert A. Thompson|09/04/2025|2:07:00|09/03/2025|10:40:00|MST|9/4/2025 2:35:00 AM|Non Emergency| |Agreement State|||||||Roldan-Otero, Lizette|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|CNSNS (Mexico), -|FAX|||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST MOISTURE DENSITY GAUGE The following information was provided by the Arizona Department of Health Services (the Department) via email: "The Department received notification from the licensee that a portable gauge was lost/stolen. A technician last saw the gauge on August 28, 2025, at 0130 MST at the technician's residence in Fountain Hills, Arizona. On September 3, 2025, the technician arrived at a jobsite at 1040 MST and realized that the gauge was not in the back of his truck. The gauge is a Troxler model 3411, S/N 17318, containing approximately 8 millicuries of cesium-137 and 40 millicuries of americium-241/beryllium. The Department has requested additional information and continues to investigate the event. The licensee has reported the gauge stolen with the city of Fountain Hills." Arizona Incident Number: 25-017 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 | Power Reactor|57899|Peach Bottom|Exelon Nuclear Co.|1|Philadelphia|PA|York & Lancaster||Y|05000277|2|3||[2] GE-4,[3] GE-4|Matthew Batdorf|Ernest West|09/04/2025|12:42:00|09/04/2025|11:10:00|EDT|9/4/2025 12:58:00 PM|Non Emergency|50.72(b)(3)(ii)(B)|Unanalyzed Condition|||||||Dentel, Glenn|R1DO|||||||||||||||||||N|Y|100|Power Operation|100|Power Operation|N|Y|96|Power Operation|96|Power Operation||N|0||0||UNANALYZED CONDITION The following information was provided by the licensee via phone email: "On September 4, 2025, at 1110 EDT, it was determined that the units are in an unanalyzed condition. A review of DC control circuit protection schemes identified circuits which are uncoordinated due to inadequate fuse sizing. This results in a concern that postulated fire damage in one area could cause a short circuit without adequate protection, leading to the unavailability of equipment credited for 10 CFR 50 Appendix R safe shutdown. This condition is not bounded by existing design and licensing documents; however, it poses no impact to the health and safety of the public or plant personnel. Therefore, this event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(ii)(B). "Compensatory actions for affected fire areas have been implemented. "The NRC Senior Resident Inspector has been notified."| Agreement State|57900|Texas Dept of State Health Services|ASCEND PERFORMANCE MATERIALS TX INC|4|Alvin|TX||L06630|Y||||||Art Tucker|Ernest West|09/04/2025|14:25:00|09/03/2025|0:00:00|CDT|9/4/2025 2:48:00 PM|Non Emergency| |Agreement State|||||||Roldan-Otero, Lizette|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - STUCK SHUTTER The following information was provided by the Texas Department of State Health Services (the Department) via email: "On September 4, 2025, the Department was notified by the licensee that the shutter on a Texas Nuclear model 5201 fixed source housing had failed in the open position during routine testing. This is the normal operating position for the shutter. The gauge contains a 100 millicurie (original activity) cesium 137 source. The licensee reported that there is no risk of additional radiation exposure to members of the general public or radiation workers. Additional information will be provided as it is received in accordance with SA-300." Texas NMED # TX250041 Texas Incident #: 10222| Power Reactor|57901|Grand Gulf|Entergy Nuclear|4|Port Gibson|MS|Claiborne||Y|05000416|1|||[1] GE-6|Kenya Haley|Karen Cotton|09/04/2025|14:40:00|09/04/2025|8:55:00|CDT|9/4/2025 3:40:00 PM|Non Emergency|50.72(b)(3)(v)(D)|Accident Mitigation|||||||Roldan-Otero, Lizette|R4DO|||||||||||||||||||N|Y|100|Power Operation|100|Power Operation||N|0||0|||N|0||0||SECONDARY CONTAINMENT HATCH LEFT UNSECURED The following information was provided by the licensee via phone and email: "On September 4, 2025, at 0855 CDT, Grand Gulf Nuclear Station operators discovered the enclosure building roof hatch was unsecured and open approximately 1 inch. This resulted in inoperability of secondary containment. Following discovery, the hatch was immediately closed and latched. Secondary containment operability was restored at 0940 CDT. "This event is being reported under 10 CFR 50.72(b)(3)(v)(D) as an event or condition that could have prevented fulfillment of a safety function. "The NRC Resident Inspector has been notified." | Agreement State|57902|Maine Radiation Control Program|University of Maine Orono|1|Orono|ME||19827-01|Y||||||James Nizamoff|Karen Cotton|09/04/2025|16:34:00|09/04/2025|8:56:00|EDT|9/4/2025 4:34:00 PM|Non Emergency| |Agreement State|||||||Dentel, Glenn|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|CNSC (Canada), -|EMAIL|||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST EXIT SIGN The following information is a summary of the report provided by the Maine Radiation Control Program (Maine RCP) via email: At 0856 EDT, on September 4, 2025, the radiation safety officer (RSO) for the University of Maine Orono contacted the Maine RCP and reported that a tritium exit sign located underneath the UMaine Orono stadium bleachers was discovered to be missing. The current activity would be approximately 17.5 Ci due to decay. The RSO contacted the members of the University of Maine Facilities Maintenance department, as well as contractors working on site, and it was relayed that heavy construction had been occurring in the facility during the last two months, and that the sign may have been damaged during cleaning. It was surmised that the sign was likely disposed of in the trash, but this could not be directly confirmed by anyone. The RSO will continue to gather additional information that will be included in a written report to be submitted within 30 days. NMED event notification - ME 2025-005 Model: SRB Technologies Betalux-E/BX Serial Number: C196983 Source: 21.6 Ci H3 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|57903|California Radiation Control Prgm|NMG Geotechnical, Inc. |4|Carlsbad|CA||6052-30|Y||||||Donald Oesterle|Karen Cotton|09/04/2025|17:09:00|09/04/2025|9:30:00|PDT|9/4/2025 5:16:00 PM|Non Emergency| |Agreement State|||||||Roldan-Otero, Lizette|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|CNSNS (Mexico), - (EMAIL)|EMAIL|||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - STOLEN GAUGE The following information was provided by the California Department of Public Health, Radiologic Health Branch (the Department) via email: "On September 4, 2025, at 0930 PDT, the radiation safety officer (RSO) notified the Radiologic Health Branch that a CPN moisture density gauge had been stolen from a locked trailer at their construction jobsite. The construction manager noticed the company's trailer was unsecured and notified NMG Geotechnical. The gauge was secured within an internal locked cabinet inside the trailer, inside its locked transportation case that has the company name and contact number affixed. The gauge's trigger lock was confirmed to be engaged. "The City of Carlsbad Police Department was notified, and a theft report was recorded. Maurer Technical Services was also notified. NMG Geotechnical will post a reward for information leading to the return of the stolen equipment. The Department will continue to investigate this event. " CA incident #: 5010-090425 Model: CPN MC-DRP Serial Number: Unknown Source: 10 mCi Cs-137, 50 mCi Am-241/Be 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|57904|Texas Dept of State Health Services|Terradyne Engineering Inc.|4|Euless|TX||06525|Y||||||Art Tucker|Karen Cotton|09/04/2025|18:40:00|09/04/2025|0:00:00|CDT|10/1/2025 6:08:00 PM|Non Emergency| |Agreement State|||||||Roldan-Otero, Lizette|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, |EMAIL|CNSNS (Mexico), - Email|EMAIL|||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 10/2/2025

EN Revision Text: AGREEMENT STATE REPORT - LOST GAUGE The following information was provided by the Texas Department of State Health Services via email: "On September 4, 2025, the licensee reported that one of its technicians lost a Troxler 3440 moisture/density gauge. The gauge contains a 40 millicurie Am-241 source and a 10 millicurie Cs-137 source. The radiation safety officer (RSO) stated the gauge was being used at a field site. "The technician needed to go to the bathroom and placed the gauge into its transport case. The technician locked the transport case, placed it into the back of the truck, and put a locking cable through one of the transport case handles. The technician left the area and, when he arrived at the convenience store, he found the tail gate down and the case and gauge missing. The cable that was through the handle was still secured to the truck and through the case handle, but the handle had been pulled off the case. The technician contacted the RSO and informed him that the gauge was missing. "The RSO stated the technician and a manager had looked for the gauge. They handed out cards with their contact information to the workers at the job site and contacted local law enforcement. The licensee does not believe any individual would receive any significant exposure due to this event. "Additional information will be provided as it is received in accordance with SA-300." TX incident #: 10224 TX NMED # TX250042 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.pdfNotified R#DO (name), NMSS Events Notification (email) * * * UPDATE ON OCTOBER 1, 2025, AT 1759 EDT FROM THE TEXAS DEPARTMENT OF STATE HEALTH SERVICES TO JORDAN WINGATE * * * "On October 1, 2025, the Department was notified that the gauge was recovered. The Department has requested additional information from the licensee. Additional information will be provided as it is received." Notified R4DO (Vossmar), NMSS Events Notifications (email), ILTAB (email), and CNSNS (Mexico-email). | Power Reactor|57905|Quad Cities|Exelon Nuclear Co.|3|Cordova|IL|Rock Island||Y|05000254|1|||[1] GE-3,[2] GE-3|Tom Boyle|Jordan Wingate|09/05/2025|3:42:00|09/05/2025|1:30:00|CDT|9/5/2025 3:54:00 AM|Non Emergency|50.72(b)(3)(v)(D)|Accident Mitigation|||||||Stoedter, Karla|R3DO|||||||||||||||||||N|Y|100|Power Operation|100|Power Operation||N|0||0|||N|0||0||HIGH PRESSURE COOLANT INJECTION INOPERABLE The following information was provided by the licensee via phone and email: "At 0130 CDT on September 5, 2025, it was discovered that the single train high pressure coolant injection (HPCI) system was inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfilment of a safety function. Therefore, this condition is being reported as an 8-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). "Unit 1 reactor core isolation cooling was operable during this time period. There was no impact on the health and safety of the public or plant personnel. "The NRC Resident Inspector has been notified. The Illinois Emergency Management Agency has been notified." The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: The inoperability was caused by a malfunctioning turbine steam admission valve during a surveillance. Unit 1 is in a 14-day limiting condition for operations. | Power Reactor|57906|Catawba|Duke Energy Nuclear Llc|2|York|SC|York||Y||2|||[1] W-4-LP,[2] W-4-LP|Aaron Michalski|Kerby Scales|09/05/2025|16:51:00|09/05/2025|9:09:00|EDT|9/5/2025 5:14:00 PM|Non Emergency|50.72(b)(3)(ii)(A)|Degraded Condition|||||||Bacon, Daniel|R2DO|||||||||||||||||||N|N|0|Hot Shutdown|0|Hot Shutdown||N|0||0|||N|0||0||DEGRADED CONDITION The following information was provided by the licensee via phone and email: "At 0909 EDT on September 5, 2025, with the unit shut down for a scheduled refueling outage it was determined the reactor coolant system barrier had a through wall flaw with leakage. The leakage is minor in nature and unquantifiable. The leakage is coming from a welded connection upstream of a 1-inch vent valve on the chemical and volume control system letdown line. The leak was isolated in accordance with plant technical specifications. "This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(ii)(A). There was no impact on the health and safety of the public or plant personnel. "The NRC Resident Inspector has been notified." | Agreement State|57907|Illinois Emergency Mgmt. Agency|GE Healthcare DBA/Medi Physics|3|Arlington Heights|IL||IL-01109-01|Y||||||Kimberly Stice|Sam Colvard|09/08/2025|11:09:00|09/04/2025|0:00:00|CDT|9/8/2025 11:16:00 AM|Non Emergency| |Agreement State|||||||Stoedter, Karla|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - PACKAGE MISSING IN TRANSIT The following information was provided by the Illinois Emergency Management Agency (the Agency) via email: "On September 4, 2025, the Agency received a notification from GE Healthcare in Arlington Heights, IL, to advise of a radiopharmaceutical package missing in transit. The package was shipped via [common carrier] on Thursday, August 21, 2025, for delivery to Mayo Clinic of Rochester, MN. The package contained 1 vial of ln-111 Oxyquinoline product calibrated at 1.0 mCi per vial. There has been no indication that the package was damaged or that the contents were separated from its packaging. "The last tracking information has documented receipt at the [common carrier] Memphis sort facility on Thursday evening August 21, 2025, at 2251 CDT, but after no movement, it is believed this package is lost at the Memphis sort facility. The activity at time of shipment was 4.089 mCi, making it reportable to the NRC within 30 days. Updates will be made as they become available." 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| Power Reactor|57908|Sequoyah|Tennessee Valley Authority|2|Soddy-Daisy|TN|Hamilton||Y|05000327|1|2||[1] W-4-LP,[2] W-4-LP|Matthew Bacon|Rodney Clagg|09/08/2025|16:58:00|09/08/2025|13:35:00|EDT|9/8/2025 5:13:00 PM|Non Emergency|26.719|Fitness For Duty|||||||Bacon, Daniel|R2DO|FFD Group, |EMAIL|||||||||||||||||N|Y|100|Power Operation|100|Power Operation|N|Y|100|Power Operation|100|Power Operation||N|0||0||FITNESS FOR DUTY TEST The following information was provided by the licensee via phone and email: "On 09/08/2025 at 1335 EDT, a Sequoyah Nuclear Plant contract supervisor failed a test specified by the fitness for duty testing program. The individual's authorization for site access has been terminated. "The NRC Resident Inspector has been notified." | Agreement State|57909|Louisiana Radiation Protection Div|QSA Global|4|Port Allen|LA||LA-5934-L01|Y||||||James Pate|Rodney Clagg|09/08/2025|19:04:00|09/08/2025|0:00:00|CDT|9/15/2025 10:59:00 AM|Non Emergency| |Agreement State|||||||Deese, Rick|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/16/2025

EN Revision Text: AGREEMENT STATE REPORT - TRANSPORTED PACKAGE EXCEEDS LIMITS The following report was received by the Louisiana Department of Environmental Quality (LDEQ) via phone: On September 8, 2025, LDEQ was notified by QSA Global in Port Allen, LA, that they received a package with readings of 1 R/hr on contact of the external surface of one side of the package. Upon opening the package, it was found to contain two nuclear gauges, both with their shutters in the locked open position. One gauge was laying on its side and was most likely the cause of the 1R/hr reading. The gauges were a Thermo Fisher gauge, model 5202, serial number B3308 (500 mCi Cs-137) and a Kay-Ray gauge, model 7063P, serial number S92L3001 (200 mCi Cs-137). The package was received from TaTa Steel Limited in Odissa, India and was shipped via [common carrier]. * * * UPDATE ON 09/09/2025 AT 1303 EDT FROM JAMES PATE TO JOSUE RAMIREZ * * * The following is a summary of information provided by the Louisiana Department of Environmental Quality (LDEQ) via email: On September 3, 2025, QSA Global, Inc. received a package for disposal from India. The sources were received from Juda Wet Processing Plant Kendujhar Keonjhar, Orissa, 758034 India. The update included the transportation path for the shipment within the United States. Event Report ID No.: LA20250009 Notified R4DO (Deese), NMSS Events Notification (email), and NMSS (Allen). | Agreement State|57910|Illinois Emergency Mgmt. Agency|Morton Grove Pharmaceuticals |3|Morton Grove |IL||9223567|Y||||||Kimberly Stice|Josue Ramirez|09/09/2025|11:30:00|08/27/2025|0:00:00|CDT|9/9/2025 11:48:00 AM|Non Emergency| |Agreement State|||||||Sanchez Santiago, Elba|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, |EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST SOURCES The following information was provided by the Illinois Emergency Management Agency (the Agency) via phone and email: "As a result of an ongoing Agency investigation into unresponsive general licensees, the Agency became aware that two (2) generally licensed gas chromatography devices containing 15 millicuries of Ni-63 are missing. "Reportedly, on or about February 2023, Morton Grove Pharmaceuticals (Morton Grove, IL) ceased operations and improperly auctioned the two generally licensed devices, along with all other assets. "The licensee failed to properly transfer or dispose of the devices, two Agilent Technologies model G23974 (s/n U10800 and s/n U12506). Agency inspectors conducted a site investigation on August 27, 2025, and confirmed no lab equipment is on site. "The quantity of radioactive material involved, while unlikely to be dangerous to the public, is reportable within 30 days to the Agency and the U.S. NRC. Efforts to identify the buyers of the devices through the auction company have been unproductive and, absent additional information, the investigation is closed." Illinois item number: IL250035 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|57911|MA Radiation Control Program|Baystate Health|1|Springfield|MA||60-0095|Y||||||Bob Locke|Josue Ramirez|09/09/2025|13:36:00|08/11/2025|11:00:00|EDT|9/9/2025 2:20:00 PM|Non Emergency| |Agreement State|||||||Ford, Monica|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST I-125 SEED The following information was received from the Massachusetts Radiation Control Program (the Agency) via email: "On August 11, 2025, three radioactive iodine-125 sealed sources (seeds) were removed from a patient receiving a radioactive seed localization procedure. The licensee expected to remove four I-125 seeds, which were placed in the patient on August 8, 2025, but only located three of the seeds. "The missing seed was not located after extensive surveys of the patient, staff, and all areas where the seed may have been misplaced. The seed has not been located at this time. "This is a 30-day reporting requirement per [Code of Massachusetts Regulations] 105 CMR 120.281(A)(2), missing licensed radioactive materials in aggregate quantity equal to or greater than 10 times quantity specified in 105 CMR 120.297, Appendix C. "The Agency considers this event to be open." Manufacturer: IsoAid, LLC Model: IAI-125A Source: 0.181 mCi I-125 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| Power Reactor|57912|Millstone|Dominion Generation|1|Waterford|CT|New London||N||2|||[1] GE-3,[2] CE,[3] W-4-LP|Josh Lindsey|Eric Simpson|09/10/2025|5:23:00|09/09/2025|22:50:00|EDT|9/12/2025 10:32:00 AM|Non Emergency|50.72(b)(3)(v)(C)|Pot Uncntrl Rad Rel|||||||Ford, Monica|R1DO|||||||||||||||||||N|Y|100|Power Operation|100|Power Operation||N|0||0|||N|0||0||EN Revision Imported Date: 9/15/2025

EN Revision Text: ENCLOSURE BUILDING BOUNDARY INOPERABLE The following information was provided by the licensee via phone and fax: "Entry into shutdown technical specification action statement due to an identified breach in ventilation ductwork. "At 2250 EDT on September 9, 2025, it was discovered that there was degraded manway sealant on the manway to fire damper HV-298A. This degraded sealant results in a direct path from the enclosure building to the atmosphere, challenging the enclosure building boundary. This condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(C). "There is no impact on the health and safety of the public or plant personnel. "The plant is currently in a 24-hour technical specification action statement (3.6.5.2) for Unit 2. Unit 3 is not impacted and continues to operate at 100 percent power." The Resident Inspector has been notified. * * * RETRACTION ON SEPTEMBER 12, 2025, AT 0908 EDT FROM JARED FARLEY TO ERIC SIMPSON * * * The following information was provided by the licensee via phone and fax: "Millstone Unit 2 is retracting NRC Event Notification (EN) 57912, made on September 10, 2025, at 0523 EDT, regarding a condition identified at Millstone Power Station Unit 2. The condition involved degraded sealant on manways to fire dampers HV-298A/B/G, which resulted in a direct path from the enclosure building to the atmosphere, challenging the integrity of the enclosure building boundary. This condition was initially reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(C) for an event or condition that could have prevented the fulfillment of a safety function (control of release of radioactive material). "A subsequent review using additional information on hatch design and actual seating surface determined that there is reasonable assurance the enclosure building boundary remained operable and retained its safety function to control the release of radioactive material and mitigate the consequences of an accident. Based on this assessment, Unit 2 exited Technical Specification action statement 3.6.5.2, and the condition is not reportable under 10 CFR 50.72(b)(3)(v)(C). Therefore, NRC EN 57912 is being retracted." The Resident Inspector has been notified. Notified R1DO (Ford). | Agreement State|57913|Colorado Dept of Health|LDS Church - Woodland Park|4|Woodland Park|CO||GL000265|Y||||||Kathryn Kirk|Eric Simpson|09/10/2025|10:42:00|09/09/2025|0:00:00|MDT|9/10/2025 10:42:00 AM|Non Emergency| |Agreement State|||||||Deese, Rick|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST EXIT SIGNS The following is a summary of information provided by the Colorado Department of Public Health and Environmental (the Department) via email. The Department received a notification from LDS Church that seventeen (17) exit signs, each with 14.5 Ci of tritium were lost in Woodland Park, Colorado. Manufacturer: SRB Technologies Model Number: BXU20BS Colorado Event Report ID Number: CO250025 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| Power Reactor|57914|Oconee|Duke Energy Nuclear Llc|2|Seneca|SC|Oconee||Y|05000269|1|||[1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP|Joshua Arnett|Josue Ramirez|09/10/2025|12:26:00|09/10/2025|12:07:00|EDT|9/10/2025 2:01:00 PM|Unusual Event|50.72(a) (1) (i)|Emergency Declared|||||||Mckown, Louis J|R2DO|Groom, Jeremy|NRR|Lara, Julio|R2RA|Williams, Kevin|NSIR|Whited, Jeffrey|IR MOC|Gasperson, David|R2 PAO|Franke, Mark|R2 DRA|McKenna, Philip|NRR EO|||||N|Y|100|Power Operation|100|Power Operation||N|0||0|||N|0||0||UNUSUAL EVENT - RCS IDENTIFIED LEAKAGE GREATER THAN 25 GPM FOR GREATER THAN 15 MINUTES The following information was provided by the licensee via phone and email: At 1207 EDT on September 10, 2025, Oconee Nuclear Station Unit 1 declared an Unusual Event (SU5.1) due to identified reactor coolant system (RCS) leakage from Unit 1 for greater than 15 minutes. The calculated leak rate was 26 gallons per minute (gpm). The leakage was identified to be from letdown filter 1A, which was subsequently isolated. Units 2 and 3 remain at 100 percent power and are unaffected by this event. This event was terminated at 1353 after isolating the source of the leak. The NRC Resident Inspector has been notified. Notified DHS SWO, FEMA Operations Center, CISA Central Watch Officer, FEMA NWC, DHS Nuclear SSA (email), CWMD Watch Desk (email). | Agreement State|57915|Colorado Dept of Health|Sheraton Denver Downtown Hotel|4|Denver|CO||GL000275|Y||||||Kathryn Kirk|Josue Ramirez|09/10/2025|12:42:00|08/01/2025|0:00:00|MDT|9/10/2025 1:50:00 PM|Non Emergency| |Agreement State|||||||Deese, Rick|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/29/2025

EN Revision Text: AGREEMENT STATE REPORT - LOST EXIT SIGNS The following is a summary of information provided by the Colorado Department of Public Health and Environment (the Department) via email: The Department received a notification from the licensee that eight (8) exit signs, containing a total of 65.65 Ci of tritium were lost in Denver, Colorado. Manufacturer: SRB Technologies & Isolite Corporation Model Number: BXU10GS (1 sign), BR-10-BK (2 signs), BRU10S (2 signs), BETALUX (3 signs). Activities: Models - BXU10GS & BR-10-BK: 9.21 Ci each Model - BRU10S: 7.76 Ci each Model - BETALUX: 7.5 Ci each Event Report ID No.: CO250026 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|57916|Colorado Dept of Health|Laramie Energy LLC|4|Meeker|CO||GL002145|Y||||||Kathryn Kirk|Josue Ramirez|09/10/2025|13:03:00|07/28/2025|0:00:00|MDT|9/10/2025 2:06:00 PM|Non Emergency| |Agreement State|||||||Deese, Rick|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|EN Revision Imported Date: 9/29/2025

EN Revision Text: AGREEMENT STATE REPORT - LOST EXIT SIGN The following is a summary of information provided by the Colorado Department of Public Health and Environment (the Department) via email: The Department received a notification from the licensee that one (1) exit sign containing 10 Ci of tritium was lost in Meeker, Colorado. Manufacturer: Isolite Corporation Model Number: SLX60 Isotope: H-3 Activity: 10 Ci Event Report ID No.: CO250027 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| Power Reactor|57917|Oconee|Duke Energy Nuclear Llc|2|Seneca|SC|Oconee||Y|05000269|1|||[1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP|Matthew Ginn|Josue Ramirez|09/10/2025|18:09:00|09/10/2025|15:40:00|EDT|9/10/2025 6:17:00 PM|Non Emergency|50.72(b)(2)(xi)|Offsite Notification|||||||Mckown, Louis J|R2DO|||||||||||||||||||N|Y|100|Power Operation|100|Power Operation||N|0||0|||N|0||0||OFFSITE NOTIFICATION The following information was provided by the licensee via phone and email: "At 1207 EDT on September 10, 2025, Oconee Nuclear Station Unit 1 declared an unusual event (Event number 57914). A small reactor coolant system (RCS) leak occurred during routine RCS letdown filter maintenance. The letdown filters were bypassed, and the leak was isolated. The unusual event was terminated at 1353 EDT. "This notification is being made solely as a four-hour, non-emergency notification for a news release. 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 Resident Inspector has been notified." | Agreement State|57918|Texas Dept of State Health Services|Raba-Kistner Consultants Inc.|4|San Antonio|TX||01571|Y||||||Sindiso Ncube|Eric Simpson|09/11/2025|8:56:00|09/11/2025|4:12:00|CDT|9/11/2025 9:51:00 AM|Non Emergency| |Agreement State|||||||Deese, Rick|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - FOUND DENSITY GAUGE The following information was provided by the Texas Department of State Health Services (the Agency) via email: "On September 11, 2025, at 0412 CDT, the Agency received a notification from the Austin Fire Department that it had recovered a Humboldt 5001EZ moisture density gauge. The gauge contained a 40 Am-241:Be sealed source and a 10 millicurie cesium-137 source and had reportedly been found by a member of the public at a convenience store, who immediately contacted the fire department. The fire department provided contact details retrieved from the transport case which showed that the gauge is owned by the licensee who is based in San Antonio, Texas. "The Agency then contacted the radiation safety officer (RSO) who confirmed that the gauge had been checked out by a technician between 0230 - 0245. The technician was unaware that the gauge was missing until they were informed that the gauge had been recovered and was in the possession of the RSO. The technician believes the gauge may have fallen out of the truck during transport because the tailgate had not been secured. When the gauge was recovered, both locks on the transport container were still intact. There is no risk of exposure to any members of the public because of this event. Additional information will be provided in accordance with SA - 300 reporting." Texas Incident #: 10226 Texas NMED # TX250045| Power Reactor|57919|Callaway|Ameren Ue|4|Fulton|MO|Callaway||N|05000483|1|||[1] W-4-LP|Daniel Mueller |Josue Ramirez|09/11/2025|11:28:00|09/11/2025|2:55:00|CDT|9/17/2025 9:25:00 PM|Non Emergency|50.72(b)(3)(v)(D)|Accident Mitigation|||||||Deese, Rick|R4DO|||||||||||||||||||N|Y|100|Power Operation|100|Power Operation||N|0||0|||N|0||0||EN Revision Imported Date: 9/18/2025

EN Revision Text: BOTH TRAINS OF CENTRIFUGAL CHARGING SYSTEM INOPERABLE The following information was provided by the licensee via phone and email: "On September 11, 2025, Callaway was performing a planned maintenance window causing the 'B' train emergency diesel generator and the 'B' train essential service water system to be inoperable. At 0255 CDT the 'A' train centrifugal charging pump was declared inoperable due to an unexpected loss of control room indication for the 'A' train centrifugal charging pump miniflow valve. "Therefore, both trains of the centrifugal charging (high head injection) system were simultaneously inoperable. This condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). A fuse was replaced on the 'A' train centrifugal charging pump miniflow valve breaker, restoring operability of that system at 0500. "There was no impact on the health and safety of the public or plant personnel. "The NRC Resident Inspector has been notified." * * * RETRACTION ON 9/17/2025 AT 1747 EDT FROM ZACHARY MILLIGAN TO KAREN COTTON * * * The following information was provided by the licensee via phone and email: "Event Notification (EN) 57919, made on 09/11/25, pursuant to 10 CFR 50.72(b)(3)(v)(D), is being retracted based on further review of the timing of when the 'B' train essential service water (ESW) system was operable and capable of performing its support function for the 'B' train centrifugal charge pump (CCP). "Further review of restoration procedures/processes determined that the 'B' train ESW system was operable by 0232 CDT on 9/11/25, which was prior to the loss of the 'A' train CCP mini-flow valve (0255 on 09/11/25). Thus, the 10 CFR 50.72(b)(3)(v)(D) reporting criterion was not met. "The NRC Resident Inspector has been notified of this retraction." Notified R4DO (Agrawal)| Agreement State|57920|Virginia Rad Materials Program|Allan Myers VA, Inc.|1|Westmoreland|VA|Westmoreland|075-556-1|Y||||||Sheila Nelson|Josue Ramirez|09/11/2025|15:34:00|09/10/2025|12:30:00|EDT|9/11/2025 3:40:00 PM|Non Emergency| |Agreement State|||||||Ford, Monica|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - DAMAGED PORTABLE MOISTURE DENSITY GAUGE The following information was provided by the Virginia Department of Health, Office of Radiologic Health (RMP) via email: "On September 10, 2025, at approximately 1500 EDT, RMP was notified of an incident involving damage to a portable nuclear gauge. "Earlier, at approximately 1230, a Troxler Model 4640 B portable nuclear moisture density gauge, containing 9 mCi Cs-137, (SN #2256) was struck by a roller on a paving site at Westmoreland, VA. The authorized user notified the radiation safety officer (RSO) who went to the site to evaluate the gauge condition, and he notified RMP. "Per the RSO, the gauge was clipped on the side by a CB-13 roller during the construction of a roller pattern and control strip. There was damage to the gauge cover and one battery pack. The source rod was not out when it was struck. There is no apparent [damage] to the source or the capsule. The gauge was surveyed onsite using with a TroxAlert 3105 (#64502) [meter] and readings were within acceptable ranges. The gauge was placed in its transport case and returned to the licensee's storage facility to be leak tested. Then the gauge will be sent to Troxler for evaluation. "The Radioactive Materials Program will follow up with an investigation." Event Report ID No.: VA250003| Agreement State|57921|Wisconsin Radiation Protection|University of Wisconsin - Madison|3|Madison|WI||025-1323-01|Y||||||David Reindl|Josue Ramirez|09/11/2025|16:45:00|09/11/2025|13:06:00|CDT|9/11/2025 5:06:00 PM|Non Emergency| |Agreement State|||||||Sanchez Santiago, Elba|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - EQUIPMENT FAILURE The following information was provided by the Wisconsin Department of Health Services Radiation Protection Section (the Department) via email: "On September 11, 2025, at 1306 CDT, the Department received a telephone notification that the licensee's Jubilant DraxImage Inc. RUBY-FILL Rb-82 generator (Serial Number: GLO03160183) was unable to deliver a patient dose at approximately 1000 CDT on September 11, 2025. "The device provided an error during the infusion stating that the dosage could not be delivered to the patient. The generator stated that 0.2 millicuries of Rb-82 was delivered to the patient out of an intended 20 millicuries. At approximately 1300 CDT on the same day, the licensee completed the daily quality control tests on the generator and simulated a patient infusion with a shielded vial. The device delivered the intended dosage to the vial and appears to be in working order. The licensee has a scheduled visit with the manufacturer the week of September 15-19, 2025, to evaluate the cause of failure. No contamination resulted from the incident." Event Report ID No.: WI250012 | Agreement State|57922|Colorado Dept of Health|CTL/Thompson, Inc.|4|Silverthorne|CO||CO 180-01|Y||||||Derek Bailey|Eric Simpson|09/12/2025|0:58:00|09/11/2025|19:30:00|MDT|9/12/2025 1:46:00 AM|Non Emergency| |Agreement State|||||||Deese, Rick|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST/RECOVERED MOISTURE DENSITY GAUGE The following is a summary of information provided by the Colorado Department of Public Health and Environment (the Department) via email: "On September 11, 2025, at approximately 1930 MDT, the Department received a phone call from the Jefferson County Sheriff's Office regarding a vehicle that was stolen in Silverthorne, CO. Within the vehicle was a InstroTek Model 3500 portable nuclear density gauge (SN:5664). The vehicle was involved in a police chase and eventually crashed on Interstate-70 East, near mile marker 258. "Photos of the gauge were sent to the Department and the gauge was inside of the transport case, which did not appear to be damaged. Colorado State Patrol was also on scene and recorded a reading of 4mR/hr on contact of the transport container. Additional information about the meter that was used to record that value was not available at the time of the call as the scene was unfolding. "At approximately 2114, the Department reached out to the Branch Manager of CTL/Thompson, Inc. The Branch Manager informed the Department that a technician was on route to retrieve the portable nuclear density gauge. "At approximately 2138, the Jefferson County Sheriff's Office called and notified the department that the technician was now in possession of the gauge. "The licensing information for the InstroTek Model 3500 was reviewed to verify that the surface readings taken at the scene did not exceed the expected dose rate. "Based on the information provided by law enforcement, no exposures above public dose limits are expected. The department will follow-up with the licensee to verify the gauge was not damaged in the incident and review subsequent leak tests. "Radioactive material summary: Make/Model: InstroTek, Inc. Model 3500 moisture density gauge radionuclide/activity: not more than 408 MBq (11 mCi) of cesium-137 and 1.63 GBq (44 mCi) of americium-241:beryllium. Serial Number: 5664." Colorado Event Report ID No.: CO250028| Agreement State|57923|Illinois Emergency Mgmt. Agency|Hampton, Lenzini, and Renwick|3|Mount Carmel|IL||IL-01849-01|Y||||||Kim Stice|Robert A. Thompson|09/12/2025|11:50:00|09/11/2025|0:00:00|CDT|9/12/2025 1:00:00 PM|Non Emergency| |Agreement State|||||||Sanchez Santiago, Elba|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - DAMAGED MOISTURE DENSITY GAUGE The following is a summary of information provided by the Illinois Emergency Management Agency (the Agency) via email: On September 11, 2025, the licensee reported a moisture density gauge, an Instrotek model 3500 (serial number: 5208), was damaged in Macoupin County, Illinois. The source rod was reported to be intact. Agency staff responded to the site the same day to perform a reactive inspection. The sources in the gauge (10 mCi Cs-137, 40 mCi Am-241/Be) were undamaged and there was no indication of contamination or unexpected exposure rates. The gauge was repackaged and will be returned to the manufacturer for repair or disposal. Illinois item number: IL250036 | Agreement State|57924|Illinois Emergency Mgmt. Agency|Equistar Chemicals LP|3|Morris|IL||IL-01737-01|Y||||||Kim Stice|Robert A. Thompson|09/12/2025|13:53:00|09/12/2025|0:00:00|CDT|9/12/2025 1:57:00 PM|Non Emergency| |Agreement State|||||||Sanchez Santiago, Elba|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - STUCK OPEN GAUGE SHUTTER The following information was provided by the Illinois Emergency Management Agency (the Agency) via phone and email: "The Agency was notified on September 12, 2025, by Equistar Chemicals LP of Morris, IL, regarding a stuck shutter. During the performance of the routine semi-annual inventory, the following nuclear gauge was found to have the shutter stuck in the open position. "The gauge is in its normal operating shutter position (open) and no vessel entry or potential elevated exposures are likely. This matter is reportable within 24 hours under 32 Illinois Administrative Code 340.1220(c)(2). Updates will be provided as they become available." Gauge: Vega model SH-F2 (serial number: 2767CO) Source: 300 mCi Cs-137 Illinois item number: IL250037| Agreement State|57925|Texas Dept of State Health Services|Dynamic Earth, LLC|4|Humble|TX||06779|Y||||||Bruce Hammond|Robert A. Thompson|09/12/2025|14:24:00|09/12/2025|0:00:00|CDT|9/12/2025 2:27:00 PM|Non Emergency| |Agreement State|||||||Deese, Rick|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|CNSNS (Mexico), -|EMAIL|||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - STOLEN MOISTURE DENSITY GAUGE The following information was provided by the Texas Department of State Health Services (the Department) via phone and email: "On September 12, 2025, the Department received a report of a stolen Troxler model 3440 moisture density gauge (8 mCi Cs-137, 40 mCi Am-241/Be). The gauge was stolen from a licensee vehicle outside of a hotel in Humble, Texas. The theft was witnessed [by a member of the public] but by the time police (Humble Police Department) arrived, the perpetrator was gone. The licensee personnel were not notified, and they called the police again. A written report was received at 0948 hours. The [licensee's] radiation safety officer stated they think the handle lock was in place; accordingly, there is no immediate threat to the general public. "Additional information will be provided in accordance with SA - 300 reporting." Texas incident number: 10227, NMED number TX250046 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|57926|Minnesota Department of Health|University of Minnesota|3|Minneapolis|MN||1049|Y||||||Brandon Juran|Robert A. Thompson|09/12/2025|16:18:00|09/11/2025|0:00:00|CDT|9/12/2025 4:27:00 PM|Non Emergency| |Agreement State|||||||Sanchez Santiago, Elba|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - MEDICAL EVENT The following information was provided by the Minnesota Department of Health via email: "On September 11, 2025, a TheraSphere treatment (yttrium-90 microspheres) was performed where the activity in the written directive was 66.15 mCi [and] the measured activity was 64.4 mCi. After the procedure, the licensee measured the residual activity left in the tubing at 33 mCi. Only 47.5 percent of the prescribed activity was delivered. The patient and referring physician were notified. The cause is under review. "Notification: 24-hour notification - TheraSphere treatment where the total dose or activity delivered differs from the prescribed dose or activity, as documented in the written directive, by 20 percent or more." State event report ID: MN250005 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|57927|Louisiana Dept of Environmental Quality|Isoflex Radioactive, LLC|4|St. Rose|LA||LA-13516-L01|Y||||||Jim Pate|Robert A. Thompson|09/12/2025|18:59:00|09/12/2025|14:10:00|CDT|9/15/2025 1:22:00 PM|Non Emergency| |Agreement State|||||||Deese, Rick|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - PACKAGE EXCEEDED EXTERNAL RADIATION LIMIT The following is a summary of information provided by the Louisiana Department of Environmental Quality (the Department) via phone: The licensee reported that a package received from the Colorado School of Mines, containing a 1.166 mCi Co-57 source (model MC07.122, serial number: 31.23, manufacturer unknown at the time of the report) had measured external dose rates of 50 mr/hr on contact and 0.2 mr/hr at 1 meter. When the external packaging was opened, it was discovered that the internal shipping container had been damaged. It is believed that the damage to the internal shipping container degraded the effectiveness of the shielding, resulting in the external radiation levels measured. The Department will follow-up with additional information as it is developed. * * * UPDATE ON 09/15/2025 AT 1319 EDT FROM JAMES PATE TO ROBERT THOMPSON * * * The following is a summary of information provided by the licensee via email: The package was supposed to be an excepted package. The package was damaged. The package received contained one source with the lid off the transport container inside the package. The activity of the source initially reported was the current activity; the original activity of the source was 10 mCi. The source was manufactured by Ritverc JSC and is used in a Mossbauer spectroscopy device. The Colorado School of Mines is licensed by the State of Colorado, license number CO 627-01. Event report ID number: LA20250010 Notified R4DO (Agrawal), NMSS Events Notification (email) | Power Reactor|57928|Hatch|Southern Nuclear Operating Company|2|Baxley|GA|Appling||Y||2|||[1] GE-4,[2] GE-4|Michael Torrance|Robert A. Thompson|09/13/2025|20:11:00|09/13/2025|17:04:00|EDT|9/13/2025 8:29:00 PM|Non Emergency|50.72(b)(2)(iv)(B)|RPS Actuation - Critical|50.72(b)(3)(iv)(A)|Valid Specif Sys Actuation|||||Mckown, Louis J|R2DO|||||||||||||||||||N|Y|70|Power Operation|0|Hot Shutdown||N|0||0|||N|0||0||MANUAL REACTOR SCRAM The following information was provided by the licensee via phone and email: "On September 13, 2025, at 1704 EDT, with Unit 2 in mode 1 at 70 percent power performing main turbine testing, the Unit 2 reactor was manually tripped due to loss of both reactor recirculation pumps. Due to the power level at the time, closure of containment isolation valves (CIVs) in multiple systems 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. Normal reactor level and pressure control systems are controlling as expected. Decay heat is being removed by discharging steam to the main condenser using turbine bypass valves. Unit 1 is not affected. "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, the event is being reported as an eight-hour non-emergency notification per 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of CIVs. "There was no impact on the health and safety of the public or plant personnel. The NRC resident inspector has been notified." The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: Main turbine control valve testing was in progress when the reactor recirculation pumps tripped. | Power Reactor|57929|Comanche Peak|Txu Generation Company Lp|4|Glen Rose|TX|Somervell||Y||2|||[1] W-4-LP,[2] W-4-LP|Victor Alanis|Ernest West|09/15/2025|0:16:00|09/14/2025|20:20:00|CDT|9/15/2025 12:40:00 AM|Non Emergency|50.72(b)(2)(iv)(B)|RPS Actuation - Critical|50.72(b)(3)(iv)(A)|Valid Specif Sys Actuation|||||Agrawal, Ami|R4DO|||||||||||||||||||M/R|Y|100|Power Operation|0|Hot Standby||N|0||0|||N|0||0||MANUAL REACTOR TRIP The following information was provided by the licensee via phone and email: "At 2020 CDT [on 9/14/2025], [Comanche Peak] Unit 2 reactor was manually tripped due to a malfunction of the electro-hydraulic control (EHC) system on the main turbine. All auxiliary feedwater pumps started due to steam generator `Lo-Lo' levels post trip. This event is being reported in accordance with 10 CFR 50.72(b)(2)(iv)(B) for a reactor trip and 10 CFR 50.72(b)(3)(iv)(A) for an actuation of auxiliary feedwater. Unit 2 is being maintained in hot standby (mode 3) in accordance with integrated plant operating procedures. Decay heat is being rejected to the main condenser via the steam dump valves." The NRC Resident Inspector was notified. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: Unit 1 was not affected. The cause of the malfunction of EHC is unknown and under investigation. All rods fully inserted upon the reactor being tripped. | Non-Power Reactor|57930|Kansas State University (KAST)|Kansas State University|0|Manhattan|KS|Riley|R-88|Y|05000188||||250 Kw Triga Mark Ii|Alan Cebula|Robert A. Thompson|09/15/2025|16:16:00|09/10/2025|0:00:00|CDT|9/15/2025 4:27:00 PM|Non Emergency||Non-Power Reactor Event|||||||Andrew Miller|NRR PM|Brian Lin|NRR/NPR|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|TECHNICAL SPECIFICATION REQUIRED REPORT The following information was provided by the licensee via phone and email: "A reportable occurrence [was] identified on September 15, 2025, for a failure to implement administrative controls. Per technical specification 6.2(b).4, the facility reactor safeguards committee (RSC) shall determine whether changes in the facility as described in the safety analysis report (SAR) may be accomplished in accordance with 10 CFR 50.59, without obtaining prior NRC approval via license amendment pursuant to 10 CFR 50.90. On September 10, 2025, changes to the normal and emergency electrical power systems described in the SAR were made without completing a review and acquiring RSC approval for the change. "The reactor is and will remain shutdown until review and approval by the RSC of corrective actions is completed in accordance with Technical Specifications. "A written report will be submitted within ten days summarizing the reportable occurrence." | Agreement State|57931|Texas Dept of State Health Services|Covestro LLC|4|Baytown|TX||L 01577|Y||||||Art Tucker|Robert A. Thompson|09/16/2025|13:52:00|09/16/2025|0:00:00|CDT|9/16/2025 1:52:00 PM|Non Emergency| |Agreement State|||||||Agrawal, Ami|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - STUCK OPEN GAUGE SHUTTER The following information was provided by the Texas Department of State Health Services (the Department) via phone and email: "On September 16, 2025, the Department was notified by the licensee that the shutter on a Texas Nuclear model 5201 nuclear gauge had failed in the open position during routine testing. The gauge contains a 100 millicurie (original activity) cesium-137 source. Open is the normal operating position for the shutter. The licensee reported that there is no risk of additional radiation exposure to members of the general public or radiation workers due to this on/off mechanism failure. The licensee reported a service provider has been contacted to repair the gauge. Additional information will be provided as it is received in accordance with SA-300." Texas incident number: 10228 | Agreement State|57932|Texas Dept of State Health Services|Midwest NDT Services|4|Pharr|TX||L 07043|Y||||||Art Tucker|Robert A. Thompson|09/16/2025|15:50:00|09/11/2025|0:00:00|CDT|9/16/2025 4:13:00 PM|Non Emergency| |Agreement State|||||||Agrawal, Ami|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|Jeff Whited|IR MOC|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST CONTROL OF SOURCE The following information was provided by the Texas Department of State Health Services (the Department) via phone and email: "On September 16, 2025, the Department was notified that on September 11, 2025, a radiographer was involved in a traffic accident while transporting an IR 100 radiography device containing a 45.7 curie iridium-192 source. The radiation safety officer (RSO) stated the radiographer hit another vehicle and then left the scene of the accident and went to their hotel. Someone provided the license plate number of the radiographer's truck to law enforcement. Law enforcement found the truck at the hotel, arrested the radiographer, and had the truck with the source transported to an impoundment yard. The truck was towed at 0300 CDT on September 12, 2025. The RSO was contacted by the impoundment yard, picked the truck up at 0830 that same morning, and returned the source to its storage location. "The RSO stated that the locks on the darkroom door and the transportation box were still intact. The RSO does not believe any individual would have received an exposure due to this event. "Additional information will be provided as it is received in accordance with SA-300." Texas incident number: 10229 THIS MATERIAL EVENT CONTAINS A 'Category 2' LEVEL OF RADIOACTIVE MATERIAL Category 2 sources, if not safely managed or securely protected, could cause permanent injury to a person who handled them, or were otherwise in contact with them, for a short time (minutes to hours). It could possibly be fatal to be close to this amount of unshielded radioactive material for a period of hours to days. These sources are typically used in practices such as industrial gamma radiography, high dose rate brachytherapy and medium dose rate brachytherapy. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf| Agreement State|57933|Florida Department of Health|Troxler Corp|1|Jacksonville|FL||N/A|Y||||||Mark Seidensticker|Robert A. Thompson|09/16/2025|16:30:00|09/15/2025|0:00:00|EDT|9/16/2025 4:46:00 PM|Non Emergency| |Agreement State|||||||Schussler, Jason|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - NON-LICENSEE IN POSSESSION OF LICENSED MATERIAL The following is a summary of information provided by the Florida Department of Health (the Department) via phone and email: On September 15, 2025, US Customs and Border Protection (CBP) identified a Troxler model 3430 moisture density gauge (S/N 20331, 8 mCi Cs-137, 40 mCi Am-241/Be) in a vehicle leaving the Port of Jacksonville. CBP held the vehicle and determined that the company, RQ Construction Co., was not licensed to possess a gauge with this level of radioactivity. CBP notified the Department of the incident and contacted Troxler and arranged for transport of the gauge to Troxler's facility in North Carolina. The Department has learned that the model 3430 gauge was sent for calibration and leak testing at Troxler by a Florida-licensed company in Tampa, FL. The Department has learned that RQ Construction Co. recently purchased a Troxler 4950 soil density gauge. This model of gauge does not require a radioactive materials license for possession and use. Troxler is investigating how the model 3430 gauge was returned to an unlicensed company in Jacksonville, FL. 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|57934|Illinois Emergency Mgmt. Agency|Bard Brachytherapy|3|Carol Stream|IL||IL-02062-01|Y||||||Gary Forsee|Josue Ramirez|09/17/2025|12:46:00|09/12/2025|0:00:00|CDT|9/17/2025 12:53:00 PM|Non Emergency| |Agreement State|||||||Szwarc, Dariusz|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - PACKAGE PRESUMED MISSING IN TRANSIT The following information was provided by the Illinois Emergency Management Agency (the Agency) via email: "The Agency was contacted on 9/12/25 by Bard Brachytherapy (Carol Stream, IL) to advise that a package of (95) I-125 brachytherapy seeds, which they shipped on 9/9/25, had been repeatedly delayed and was now presumed lost at the carrier's hub in Kernersville, NC. Each seed contains 0.889 millicuries, for a total package activity of 84.455 millicuries. According to email transcripts, the [common] carrier stated the packages were still on site but had not been released for unknown reasons. There were no concerns of exposures to persons in unrestricted areas. On Tuesday, 9/16/25, the packages were then released and shipped to the intended recipient. "It is unclear if the carrier declared the packages as lost and the reporting criteria in 10 CFR 20.2201 had been met. However, as the quantity of material would have required immediate reporting if lost. The licensee met all reporting requirements. This matter is now considered closed." Item Number: IL250038 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|57935|Illinois Emergency Mgmt. Agency|Bard Brachytherapy|3|Carol Stream|IL||IL-02062-01|Y||||||Gary Forsee|Josue Ramirez|09/17/2025|12:46:00|09/08/2025|0:00:00|CDT|9/17/2025 1:08:00 PM|Non Emergency| |Agreement State|||||||Szwarc, Dariusz|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - CONTAMINATION DETECTED IN SHIPPING VIAL The following information was provided by the Illinois Emergency Management Agency (the Agency) via email: "The Agency was contacted on September 8, 2025, by Bard Brachytherapy in Carol Stream, Illinois, to advise that they had detected contamination in a shipment of (72) TheraSeed Model 200 Pd-103 brachytherapy seeds. This is the second shipment of brachytherapy seeds since August, 2025, in which contamination was identified. The first occurrence identified contamination within the shipping vial and no leaking seeds. That occurrence failed to meet reportable criteria. Both shipments had been received directly from the manufacturer, Theragenics, in Georgia. The contamination did not result in any public or occupational exposures, nor were the licensee's facilities contaminated. However, based on additional information provided on September 11, 2025, this matter is reportable to the Agency under 32 Ill. Adm. Code 340.1230(a)(3)(A), the State's equivalent of 10 CFR 20.2203(a)(3)(i). The seeds have been returned to the manufacturer for investigation and to determine if a seed was leaking or there is a repeat instance of a contaminated shipping vial. "Details: The shipment consisted of (72) sources at 1.55 millicuries each, for a total consignment of 267.3 millicuries. The brachytherapy seeds are TheraSeed model 200's, under registry number NR-0645-S-101-S. Upon receipt and transfer of brachytherapy seeds to a sterile area, the Illinois licensee surveys the empty shipping vial. It is in this step they identified contamination, later quantified to be approximately 0.013 microcuries. The reportability stems from the fact their license requires testing for contamination prior to incorporating the sources into an implanting device. The reporting threshold is 0.005 microcuries, and thus, this represented the presence of contamination in a restricted area breaching an applicable limit in the license. It is noteworthy a previous incident reported to the Agency on August 21, 2025, also found contamination in a shipping vial, although it did not exceed 0.005 microcuries. The Georgia program was contacted and notified of the incident as well. The licensee met applicable reporting timelines. This report will be updated with any additional information provided by the manufacturer." Item Number: IL250039 | Agreement State|57936|Texas Dept of State Health Services|Covestro LLC|4|Baytown|TX||L01577|Y||||||Art Tucker|Karen Cotton|09/17/2025|21:25:00|09/17/2025|0:00:00|CDT|9/17/2025 9:27:00 PM|Non Emergency| |Agreement State|||||||Agrawal, Ami|R4DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - DAMAGED GAUGE The following information was provided by the Texas Department of State Health Services (the Department) via email: "On September 17, 2025, the Department received a report from the licensee stating that, during routine testing, the screw for the shutter operating arm on a Ronan SA-1-F37 nuclear gauge containing a 100 millicurie (original activity) cesium-137 source had broken. The shutter is stuck in the open position. Open is the normal operating position. The licensee stated they will contact a service provider to repair the gauge. "The licensee reported that there is no risk of additional radiation exposure to members of the general public or radiation workers, due to this on/off mechanism failure. The licensee reported a service provider has been contacted to repair the gauge. "Additional information will be provided as it is received in accordance with SA-300." Texas Incident Number: 10230 Texas NMED Number: TX250049 | Agreement State|57937|Illinois Emergency Mgmt. Agency|Perkin Elmer Corporation|3|Downers Grove|IL||9223624|Y||||||Kim Stice|Adam Koziol|09/18/2025|10:19:00|09/17/2025|0:00:00|CDT|9/18/2025 10:26:00 AM|Non Emergency| |Agreement State|||||||Szwarc, Dariusz|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST GAS CHROMATOGRAPHY DEVICES The following information was provided by the Illinois Emergency Management Agency (the Agency) via email: "As a result of an ongoing investigation into unresponsive general licensees, the Agency became aware that five (5) generally licensed Perkin-Elmer model n610-0063 gas chromatography devices, each containing 15 millicuries of Ni-63, are missing. "Reportedly, in late 2024, the licensee went through a transition of layoffs and is currently being bought by another company. Due to the change in employees, the location of these devices is unknown. "The licensee failed to properly transfer or dispose of the devices (serial numbers 4377, 6055, 6273, 6202, and 7067). The facility manager is currently trying to reach out to past employees for information. The Agency has reached out to the distributor to try and locate the devices. "The quantity of radioactive material involved, while unlikely to be dangerous to the public, is reportable within 30 days to the Agency and the U.S. NRC. Investigation is ongoing, and any updates will be reported." Illinois Event Number: IL250040 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|57938|Kentucky Dept of Radiation Control|University of Louisville|1|Louisville|KY||202-029-22|Y||||||Russell Hestand|Adam Koziol|09/18/2025|10:56:00|09/18/2025|0:00:00|CDT|9/18/2025 11:06:00 AM|Non Emergency| |Agreement State|||||||Schussler, Jason|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - MEDICAL EVENT The following information was provided by the Radiation Health Branch of the Kentucky Department for Public Health and Safety (KY RHB) via email: "KY RHB was notified on 9/18/2025 by the radiation safety officer (RSO) from the University of Louisville Hospital of an issue with five Sir-Sphere Y-90 doses. "Due to a software issue that had a calculation error converting GBq to mCi, 5 patients were underdosed to a point that their dose was more than 20 percent outside of the prescribed dose, and the dose to the organ (liver) was more than 50 mSv from the prescribed dose. "The RSO is meeting with the physician today to discuss the issues. The issue with the software has been fixed." KY Event Number: TBD 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|57939|Alabama Radiation Control|University of Alabama in Birmingham|1|Birmingham|AL||RML 266|Y||||||Cason Coan|Adam Koziol|09/19/2025|10:19:00|09/03/2025|0:00:00|CDT|9/19/2025 10:25:00 AM|Non Emergency| |Agreement State|||||||Schussler, Jason|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|||||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - MEDICAL EVENT The following is a summary of information received from the Alabama Office of Radiation Control (the Agency) via email: On September 3, 2025, an administering physician encountered resistance while delivering a dose of Y-90 Theraspheres. The patient received 67.2 mCi of a prescribed 90.7 mCi (24.4 percent underdose). The delivery apparatus was placed in storage to decay. Once decayed, it will be sent to the manufacturer (Boston Scientific) for evaluation. The patient was informed and advised that the delivered dose is acceptable therapeutically. The Agency was informed of this incident on September 18, 2025, and will provide additional information as the investigation continues. Alabama Incident Number: 25-04 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. | Non-Agreement State|57940|Cardinal Health|Cardinal Health|1|Memphis|TN||34-31473-03MD|Y||||||Cami Still|Ian Howard|09/22/2025|12:45:00|08/25/2025|13:53:00|EDT|9/24/2025 10:00:00 AM|Non Emergency|20.2201(a)(1)(ii)|Lost/Stolen LNM>10x|||||||Lilliendahl, Jon|R1DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|Szwarc, Dariusz|R3DO|||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|LOST SOURCE The following information was provided by the licensee via phone and email: "This loss of material report is prepared per 10 CFR 20.2201(a)(1)(ii) for a loss of material of a Ra-223 dichloride (Xofigo) radiopharmaceutical package that was lost on 8/25/2025, by a [common carrier]. The package left the facility of RAM license 34-31473-03MD at 1353 EDT on 8/25/2025, to be sent to a customer location in Lincoln, NE. The package was sent through [the common carrier] in Memphis, TN, where it was declared lost on 9/3/2025. The package contained one vial of Ra-223 dichloride with a total activity at time of shipment of 92.8 microcuries. The shipment was planned to arrive in Lincoln, NE, by 1200 MST on 8/27/2025." 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| Power Reactor|57941|Davis Besse|Firstenergy Nuclear Operating Company|3|Oak Harbor|OH|Ottawa||Y|05000346|1|||[1] B&W-R-LP|Jacob Kennedy|Ian Howard|09/22/2025|16:53:00|09/22/2025|10:30:00|EDT|9/22/2025 5:04:00 PM|Non Emergency|26.719|Fitness For Duty|||||||Szwarc, Dariusz|R3DO|FFD Group, |EMAIL|||||||||||||||||N|Y|100|Power Operation|100|Power Operation||N|0||0|||N|0||0||PROHIBITIED SUBSTANCE DISCOVERED WITHIN THE PROTECTED AREA The following information was provided by the licensee via phone and email: "At approximately 1030 EDT on September 22, 2025, it was determined an employee had an unopened bottle of beer inside the protected area on September 20, 2025. The individual's authorization for site access has been restricted, pending the results of an investigation." The NRC Resident Inspector and the NRC Region III Security Inspector have been notified. | Power Reactor|57942|Watts Bar|Tennessee Valley Authority|2|Spring City|TN|Rhea||Y|05000390|1|2||[1] W-4-LP,[2] W-4-LP|Sean Lorson|Ernest West|09/23/2025|11:58:00|09/22/2025|15:00:00|EDT|9/23/2025 12:57:00 PM|Non Emergency|26.719|Fitness For Duty|||||||Stamm, Eric|R2DO|FFD Group, |EMAIL|||||||||||||||||N|Y|100|Power Operation|100|Power Operation|N|Y|100|Power Operation|100|Power Operation||N|0||0||FITNESS FOR DUTY EVENT The following information was provided by the licensee via phone and email: "On 9/22/25, Watts Bar Nuclear (WBN) Operations was informed that a WBN licensed operator had tested positive for a controlled substance during a pre-screening test to regain unescorted access, in violation of the Tennessee Valley Authority (TVA) fitness for duty policy. "A pre-access screening was completed on 9/16/25 to regain unescorted access. The results were sent to the TVA medical review officer on 9/22/25. The test was declared positive for a controlled substance and WBN Operations was notified at 1500 EDT on 9/22/25. "The individual's unescorted access remains revoked. "The NRC Resident Inspector has been notified." | Power Reactor|57944|South Texas|Stp Nuclear Operating Company|4|Wadsworth|TX|Matagorda||Y|05000498|1|2||[1] W-4-LP,[2] W-4-LP|Marc Hill|Ernest West|09/23/2025|16:16:00|09/15/2025|13:00:00|CDT|9/23/2025 4:27:00 PM|Non Emergency|26.719|Fitness For Duty|||||||Drake, James|R4DO|FFD Group, |EMAIL|||||||||||||||||N|Y|100|Power Operation|100|Power Operation|N|Y|100|Power Operation|100|Power Operation||N|0||0||FITNESS FOR DUTY EVENT The following information was provided by the licensee via phone and email: "At 1300 CDT on September 15, 2025, it was determined that a non-licensed supervisor had tested positive for a controlled substance, in violation of South Texas Project's fitness for duty policy. Prior to this, the individual's unescorted access had been administratively withdrawn pending retesting. This is reportable under 10 CFR 26.719 and is a late 24-hour notification. "The NRC Resident Inspector has been notified." | Agreement State|57945|Illinois Emergency Mgmt. Agency|RCM Laboratories, Inc|3|Hinsdale|IL||9223364|Y||||||Kimberly Stice|Ernest West|09/23/2025|16:23:00|09/23/2025|0:00:00|CDT|9/23/2025 5:58:00 PM|Non Emergency| |Agreement State|||||||Szwarc, Dariusz|R3DO|NMSS_EVENTS_NOTIFICATION|EMAIL|ILTAB, (EMAIL)|EMAIL|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|AGREEMENT STATE REPORT - LOST SOURCE The following information was provided by the Illinois Emergency Management Agency (the Agency) via email: "As a result of an ongoing Agency investigation into unresponsive general licensees, the Agency became aware of one (1) generally licensed fluorescence analyzer device containing 40 millicuries of Cd-109 (Cat 4 source) that is missing. "Reportedly, in 2023, RCM Laboratories Inc (Hinsdale, Il) ceased operation, per a former employee. There is no indication of intentional theft/diversion, rather the result of an office closure and poor accountability. "The licensee failed to properly transfer or dispose of the device, a Niton LLC XLp-300A (serial number: 24555). The Agency investigated, and per the real estate agency [which owns the building], the building is empty and confirmed no equipment is in the building. "The quantity of radioactive material involved is reportable immediately to the Agency and the U.S. NRC." Illinois Event Number: IL250041 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-Power Reactor|57948|Univ Of New Mexico (NEWM)|University Of New Mexico|0|Albuquerque|NM|Bernalillo|R-102|Y|05000252||||0.005 Kw Agn-201m #112|Carl Willis|Ernest West|09/24/2025|17:21:00|09/24/2025|15:11:00|MDT|9/24/2025 5:29:00 PM|Non Emergency||Non-Power Reactor Event|||||||Waugh, Andrew|NRR|Helvenston, Edward|NRR|Lin, Brian|NRR|||||||||||||||N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|N|N|0|Power Operation|0|Power Operation|NON-POWER REACTOR - UNPLANNED HIGH-POWER TRIP The following information was summarized from the licensee via phone and email: On September 24, 2025, at 1511 MDT, a high-power trip occurred (operation of safety channels 2 and 3). The reactor was being operated by a senior reactor operator (SRO) and a student authorized operator. A positive-period excess reactivity measurement was being performed. The reactor power rose to 5.64 watts. The technical specifications power limit of 6 watts plus was not exceeded, and both safety channels functioned to shut the reactor down. This prompt notification for a high-power trip is in accordance with current procedures and technical specification 6.9.2.a.7. The proximate cause of this event was operator distraction. The reactor room had two visitors at the time of the event, an NRC inspector and a University of New Mexico nuclear engineering instructor. The instructor was engaging the student authorized operator and the SRO on matters relating to a laboratory activity ongoing in another part of the building. The SRO responded to the rising power too slowly to avoid the high-power trip. | Power Reactor|57949|Arkansas Nuclear|Entergy Nuclear|4|Russellville|AR|Pope||Y|05000313|1|||[1] B&W-L-LP,[2] CE|Brandon Weaver|Ernest West|09/24/2025|17:43:00|09/24/2025|13:47:00|CDT|9/24/2025 6:12:00 PM|Non Emergency|50.72(b)(2)(iv)(B)|RPS Actuation - Critical|50.72(b)(3)(iv)(A)|Valid Specif Sys Actuation|||||Drake, James|R4DO|||||||||||||||||||A/R|Y|90|Power Operation|0|Hot Standby||N|0||0|||N|0||0||AUTOMATIC REACTOR TRIP The following information was provided by the licensee via phone and email: "On September 24, 2025, at 1347 CDT, Arkansas Nuclear One, Unit 1, (ANO-1) experienced an issue with the X-01B main phase transformer which led to an automatic trip on reactor protection system (RPS). "ANO-1 is currently stable in mode 3, maintaining pressure and temperature with the P-1A and P-1B main feedwater pumps and steaming to the main condenser. All rods inserted and systems functioned as expected. "There is no radiological release on either unit as a result of this event. "This report satisfies the reporting criteria of 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(3)(iv)(A) for the reactor protection system actuation. "The NRC Senior Resident Inspector has been notified. "Unit 2 was not affected." The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: ANO-1 retains access to all normal sources of offsite power. | Power Reactor|57950|Comanche Peak|Txu Generation Company Lp|4|Glen Rose|TX|Somervell||Y|05000445|1|||[1] W-4-LP,[2] W-4-LP|Chris Metz|Ernest West|09/24/2025|23:10:00|09/24/2025|18:29:00|CDT|9/24/2025 11:28:00 PM|Non Emergency|50.72(b)(2)(iv)(B)|RPS Actuation - Critical|50.72(b)(3)(iv)(A)|Valid Specif Sys Actuation|||||Drake, James|R4DO|||||||||||||||||||M/R|Y|100|Power Operation|0|Hot Standby||N|0||0|||N|0||0||MANUAL REACTOR TRIP The following information was provided by the licensee via phone and email: "On September 24, 2025, at 1829 CDT, Comanche Peak, Unit 1, was manually tripped due to a trip of both main feed water (MFW) pumps. All auxiliary feedwater pumps started due to the trip of both MFW pumps. This event is being reported in accordance with 10 CFR 50.72(b)(2)(iv)(B) for a reactor trip and 10 CFR 50.72(b)(3)(iv)(A) for an actuation of auxiliary feedwater. Unit 1 is being maintained in mode 3 in accordance with integrated plant operating procedures. Decay heat is being rejected to the main condenser via the steam dump valves. The cause of both MFW pumps tripping is unknown and under investigation. "The NRC Resident Inspector was notified." The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: No evolutions were ongoing at the time of the event. | Power Reactor|57952|South Texas|Stp Nuclear Operating Company|4|Wadsworth|TX|Matagorda||Y|05000498|1|||[1] W-4-LP,[2] W-4-LP|Marc Hill|Ernest West|09/25/2025|17:36:00|09/25/2025|12:29:00|CDT|9/25/2025 5:56:00 PM|Non Emergency|50.72(b)(3)(v)(D)|Accident Mitigation|||||||Drake, James|R4DO|||||||||||||||||||N|Y|100|Power Operation|100|Power Operation||N|0||0|||N|0||0||TWO TRAINS OF ECCS INOPERABLE The following information was provided by the licensee via phone and email: "On 9/23/2025 at 2214 CDT, the South Texas Project Unit 1 (STP-1) Train B reactor containment fan cooler (RCFC) chilled water supply outside containment isolation valve (OCIV) 1-CC-MOV-0137 was declared inoperable due to a material condition. This rendered Train B component cooling water inoperable which cascaded to Train B emergency core cooling system (ECCS) subsystem to render it inoperable. STP-1 entered Technical Specification (TS) 3.5.2 Action A for Train B ECCS, requiring restoration within 7 days or apply the requirements of the (Configuration Risk Management Program) CRMP. "On 09/25/2025 at 1229, Train A essential chiller 12A was declared inoperable due to inability to maintain chiller water outlet temperature less than 52 Fahrenheit. This cascaded down to the Train A ECCS Subsystem to render it inoperable. STP-1 entered TS 3.5.2 Action B due to less than two of the required subsystems operable, within 1 hour restore at least two subsystems to operable status or apply the requirements of the CRMP, or be in at least Hot Standby within the next 6 hours and in Hot Shutdown within the following 6 hours. "On 09/25/2025 at 1329, STP-1 entered CRMP based on two ECCS subsystems remaining inoperable longer than 1 hour. These subsystems are used for accident mitigation. Unit 1 remains in mode 1." |