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NRC Event Notification Reports

@whoopsie.mastodon.tds.xyz.ap.brid.gy

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I share the Event Notifications published daily by the US Nuclear Regulatory Commission. [bridged from mastodon.tds.xyz/@whoopsie on the fediverse by fed.brid.gy ]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 6h

FAILED LEAK TEST Auburn, AL, 10/21/2026 "On October 21, 2026, the licensee reported that one of their electron capture detector (ECD) sources failed a leak test in preparation for disposal. The ECD source is an Eckert and Ziegler Ni-63 source with a 10 mCi activity and an assay date of January 1 […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 7h

EN Revision Imported Date: 10/30/2026 EN Revision Text: AGREEMENT STATE REPORT- LOST/STOLEN GAUGE Dallas, TX, 10/13/2021 "On October 13, 2021, a licensee reported a moisture density gauge was stolen overnight. The gauge was taken from the back of a truck between 18:00 (EDT) on October 12, 2021 […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 29/10/2026

MEDICAL EVENT Los Angeles, CA, 10/21/2026 "A medical event occurred involving an underdose during a Y-90 TheraSphere treatment for a liver lesion. The prescribed activity was 0.65 GBq (17.1 mCi), with a prescribed dose of 680 Gy to the treatment site. Following the procedure, imaging of the […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 27/10/2026

LOST AND FOUND GAUGE Laguna Hills, CA, 10/15/2026 "On October 15, 2026, a CPN moisture density gauge (S/N M350802786) was relinquished to Maurer Technical Services, a licensed CPN calibration facility in Laguna Hills. The gauge was allegedly recovered at a swap meet by someone from The Quality […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 27/10/2026

MEDIA SPILL Beverly, NJ, 10/18/2026 The licensee reported that on October 18, 2026, at approximately 1600 EDT, at the Cooper Street station, the primary radium treatment vessel (designed to remove radium from the water) experienced an overpressure transient and failed, releasing water and […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 23/10/2026

LOST RADIOACTIVE MATERIAL Albuquerque, NM, 10/02/2026 New Mexico is reporting an unlocated shipment of radioactive material involving their licensee. The shipment consists of two containers of zero-wash beads, each containing 1.48 GBq (40 mCi) of Sc-46. The shipment originated in Albuquerque […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 23/10/2026

DAMAGED GAUGE Paramus, NJ, 10/15/2026 "At 1335 EDT on 10/15/26, the radiation safety officer (RSO) for Whitestone Associates reported that a Troxler portable moisture/density gauge containing Cs-137 and Am-241/Be was crushed by a backhoe at a job site in Paramus, New Jersey. The Cs-137 source […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 21/10/2026

MEDICAL EVENT Baltimore, MD, 10/12/2026 On October 13, 2026, at 1659 EDT, staff from MDE/RHP received a call from the licensee regarding a Y-90 microsphere medical event that occurred on October 12, 2026, at 0915 EDT. The patient was prescribed approximately 60.1 mCi for treatment of liver […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 21/10/2026

STUCK SHUTTER Kingsport, TN, 10/14/2026 "During a scheduled six-month shutter check, it was discovered that a gauge shutter was stuck in the open position. No abnormal levels of radiation were detected. Open is the normal operating position since the unit is in operation 24 hours a day. A vendor […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 21/10/2026

MEDICAL EVENT Springfield, OR, 10/13/2026 On October 13, 2026, RPS was notified by the licensee of activity delivered outside the intended target during a Y-90 microsphere treatment for liver cancer. The written directive prescribed administration of 5.67 GBq to the right lobe of the liver for […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 20/10/2026

STUCK SHUTTER Freeport, TX, 10/12/2026 "On October 13, 2026, the Department was notified by the licensee that the source shutter mechanism on a nuclear gauge had failed to function as designed. The gauge, a Ronan model SA1-F37, contains a 300 mCi Cs-137 sealed source. The licensee reported that […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 20/10/2026

UNATTENDED PORTABLE GAUGE Hampton Roads, VA, 10/12/2026 "At approximately 1330 EDT on October 12, 2026, the VRMP was notified of an incident involving a portable nuclear gauge. At approximately 0800 EDT on October 12, 2026, DMY Engineering Consultants was notified by the general site contractor […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 20/10/2026

LOST SOURCE Trussville, AL, 10/13/2026 On October 13, 2026, at approximately 0930 CDT, the radiation safety officer (RSO) for the licensee called to report a lost source in transit. A radiography camera containing a 7.7 Ci Ir-192 source was shipped by common carrier on September 29, 2026, to QSA […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 20/10/2026

STOLEN GAUGE Michigan City, IN, 09/26/2022 "[The radiation safety officer of] NASHnal Soil Testing (RML IL-02440-01) contacted the Agency at approximately 1200 [CDT] on 9/26/22, to report the theft of a Troxler model 3440 moisture density gauge (S/N 29187) from a jobsite in Michigan City, IN […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 19/10/2026

AUTOMATIC REACTOR TRIP Waterford (LA), 10/16/2026 "On October 16, 2026, at 2245 CDT, Waterford 3 Steam Electric Station Unit 3 was operating at 75 percent power. While reducing power in preparation for a refueling outage, an automatic reactor trip was initiated due to an automatic turbine trip […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 19/10/2026

DAMAGED MOISTURE DENSITY GAUGE Ville Platte, LA, 10/10/2026 On October 10, 2026, a Troxler model 3400 gauge, with an 8 mCi Cs-137 source and a 100 mCi Am-241/Be source, was being checked for stabilization before leaving the licensee's facility when it was backed over by a vehicle. The equipment […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 19/10/2026

RCS PRESSURE BOUNDARY DEGRADED Robinson (SC), 10/15/2026 "At 1305 EDT on October 15, 2026, it was determined that the reactor coolant system (RCS) pressure boundary did not meet the acceptance criteria under ASME, Section XI IWB-3514, 'Standards for Examination Category B-F, Pressure-Retaining […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 19/10/2026

LOST EXIT SIGN Boulder, CO, 10/03/2026 Two exit signs, each containing 7.5 curies of tritium (15 curies total), were determined to be lost by the licensee. Manufacturer: Isolite Corporation Model Number: SLX60 Colorado Event Report ID Number: CO260024 THIS MATERIAL EVENT CONTAINS A 'Less than […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 15/10/2026

STUCK SHUTTER Houston, TX, 10/08/2026 "On October 8, 2026, the licensee notified the Agency regarding a nuclear gauge whose source shutter mechanism had failed to function as intended. The gauge, an Industrial Dynamics model FT-100, contains a 300 mCi Am-241 sealed source. The licensee reported […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 15/10/2026

LOST AND RECOVERED DENSITY GAUGE Lancaster, CA, 10/08/2026 "Bruin Geotechnical Services Inc. reported the loss of a Troxler moisture density gauge and transit case around 0600 PDT. The operator failed to close and secure the metal overpack box and close the tailgate of the truck prior to […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 15/10/2026

MEDICAL EVENT Lake Worth Beach, FL, 10/07/2026 On October 8, 2026, BRC received a report from the medical physicist at a hospital cancer center regarding an error that occurred during a stereotactic body radiation therapy treatment. The patient was scheduled to receive eight total fractions. It […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 14/10/2026

EXTERNAL RADIATION EXCEEDS LIMITS Wilmington, NC, 10/06/2026 "On October 6, 2026, Wilmington Field Services Center (WFSC) received a Dibble truck, USDOT # 465872, coupled with trailer HT004, carrying control rod drives from the Constellation Fitzpatrick facility. The shipment was being received […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 13/10/2026

FITNESS FOR DUTY Waterford (LA), 10/12/2026 "On October 12, 2026, at 0724 CDT, Waterford Steam Electric Station Unit 3 was notified an Entergy supervisor had a confirmed positive test for alcohol during a for-cause fitness-for-duty test. The individual's access has been terminated. "The […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 13/10/2026

AUTOMATIC REACTOR TRIP Hatch (GA), 10/10/2026 "At 1614 EDT, on 10/10/2026, with Unit 1 in mode 1 at 100 percent power, the reactor automatically tripped. The reactor protection system (RPS) actuated while critical, safety relief valves actuated, and a group 2 primary containment isolation […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 13/10/2026

SHUTTER MALFUNCTION Menomonie, WI, 10/06/2026 "On October 6, 2026, the Department was contacted by a representative of the licensee to report a radiation event that had been identified at 1305 CDT. The licensee was performing routine work utilizing a fixed gauge device when the device operator […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 13/10/2026

MEDICAL EVENT Morgantown, WV, 10/05/2026 "On October 5, 2026, a patient undergoing Y-90 Therasphere radioembolization of the right medial tissue of the liver was underdosed by approximately 50 percent. "The physician authorized user completed the administration as normal with no unusual […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 13/10/2026

DAMAGED GAUGE Harrisonburg, VA, 10/01/2026 "On October 2, 2026, at approximately 1600 EDT, the Virginia Office of Radiological Health was notified of an incident involving damage to a portable nuclear gauge. At approximately 1600 EDT on October 1, 2026, an InstroTek, Inc. model 3500 portable […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 09/10/2026

UNANALYZED CONDITION Louisiana Energy Services (NM), 10/01/2026 "The facility is in a safe and stable configuration and no accident has occurred. "A question was raised as to whether Urenco USA (UUSA) is missing an accident sequence for sub-sampling an overfilled '1S' bottle (above the ANSI N14 […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 09/10/2026

DEGRADED CONDITION Browns Ferry (AL), 10/07/2026 "On 10/07/2026, at 1654 CDT, during a refueling outage at zero percent power while performing local leak rate testing on the hardened containment vent system, which is part of the primary containment boundary, an engineering evaluation determined […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 09/10/2026

MEDICAL EVENT Coeur d'Alene, ID, 09/24/2026 On September 24, 2026, a patient undergoing skin cancer treatment received 5 Gray from an Ir-192 high dose rate treatment to a site other than the intended treatment site. The treatment was delivered to a skin lesion anterior to the intended lesion in […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 09/10/2026

MEDICAL EVENT Grand Rapids, MI, 09/30/2026 On September 30, 2026, a research study participant received approximately 40 percent of a prescribed dose of actinium-225 (64.79 microcuries of 162.16 microcuries). The dosage was being administered intravenously, and the study protocol was followed […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 09/10/2026

GAUGE SHUTTER STUCK OPEN Gregory, TX, 09/30/2026 "On October 1, 2026, the licensee notified the Department that the source shutter mechanisms on two gauges failed to function as designed. Both gauges are VEGA SH-F2B models, each containing a 200 mCi cesium-137 sealed source. The licensee […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 09/10/2026

UNPLANNED CONTAMINATION EVENT Albany, GA, 09/28/2026 The licensee's radiation safety officer was notified on September 30, 2026, at 1431 EDT, that 4 improved chemical agent detectors were inadvertently shredded at an industrial shredder facility located in the Marine Corps Logistics Center in […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 07/10/2026

NON-COMPLIANT TRIP LATCH ASSEMBLY Florence, SC, 07/29/2026 The following is a summary of information provided by ABB Inc by email and phone: On July 29, 2026, ABB was notified by Duke of a potential deviation associated with a trip latch assembly, part number 196951K01 (catalog identification […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 07/10/2026

LOST SOURCES Chicago, IL, 09/29/2026 On September 29, 2026, the radiation safety officer (RSO) at Northwestern Memorial HealthCare (the licensee), contacted the Agency to advise of a missing package containing two Ge-68 PET camera sealed sources (0.067 mCi and 0.402 mCi as of the date of […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 07/10/2026

STUCK SHUTTER Menomonie, WI, 09/30/2026 "On September 30, 2026, the Department was contacted by the licensee to report a radiation event that had been identified at 0145 CDT. The licensee was performing routine work utilizing a fixed gauge device when the device operator received an alert from […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 05/10/2026

DAMAGED GAUGE Galveston, TX, 09/25/2026 "The licensee notified the Department regarding a stuck shutter on a fixed gauge on a dredge in a channel in Galveston Bay. The gauge is a Berthold S/N LD744-CR, containing a Co-60 source with original activity of 500 mCi as of September 2025. The source […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 05/10/2026

MEDICAL EVENT New York City, NY, 07/13/2026 On July 13, 2026, a yttrium-90 (Y-90) TheraSphere therapy procedure at Mount Sinai Medical Center resulted in an underdose to the patient's liver. During the procedure, some activity remained in the delivery system after treatment due to a catheter […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 05/10/2026

MEDICAL EVENT Los Angeles, CA, 09/24/2026 "On September 24, 2026, a patient with liver cancer was scheduled to receive two vials of Y-90 TheraSpheres at the University of California - Los Angeles (UCLA) Health Ronald Reagan Medical Center Interventional Radiology. The first vial was administered […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 05/10/2026

MEDICAL EVENT Oak Lawn, IL, 09/24/2026 "The licensee advised on September 24th, 2026, that a patient was to be administered 0.77 GBq of Y-90 Theraspheres during a planned left hepatic lobe radioembolization treatment. The licensee reported that during administration, the authorized user was […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 01/10/2026

STOLEN TROXLER GAUGES Lisle, IL, 06/30/2025 "On September 24, 2026, a radioactive material inspector identified that OHLA Central, Inc. (IL-02482-01) failed to report to the Agency regarding two Troxler 3440P gauges stolen from a temporary jobsite located in Hinsdale, IL on June 30, 2025. The […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 01/10/2026

LEAKING SOURCE Greenville, SC, 07/26/2026 On August 28, 2026, the licensee reported that a 555 MBq (15 mCi) Ni-63 source was leaking. The source was part of a Perkin Elmer electron capture detector (ECD) (serial number 1488). A routine wipe test of the ECD was performed on July 26, 2026, with […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 01/10/2026

LOST SOURCE Aurora, CO, 09/16/2026 Two static eliminators were declared lost by the licensee on September 16, 2026. The static eliminators were manufactured by NRD LLC (model numbers P-2021), with 0.1 Ci of Po-210 (polonium) activity each. Colorado Event Report ID Number: CO260022 THIS […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 01/10/2026

DOSE TO EMBRYO Confidential - NY, NY, 08/19/2026 "On September 22, 2026 at 1300 EDT, NYSDOH was notified of a possible reportable event under 10 CFR 35.3047. "A female patient was treated for hyperthyroidism (29.4 mCi of I-131) on August 19, 2026. In accordance with standard clinical protocols […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 28/09/2026

CONTAMINATED PACKAGE Kettering, OH, 09/17/2026 On September 21, 2026, Kettering Health Network notified the Department by email that a radiopharmaceutical package containing 10 mCi of F-18 positron emission tomography (PET) material exceeded removable contamination limits established in Ohio […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 28/09/2026

MEDICAL EVENT Edgewood, KY, 09/18/2026 "During a Y-90 microsphere procedure performed on September 18, 2026, a spill occurred that resulted in the patient receiving approximately 75.7 percent of the prescribed dose. "Because the administered dose differed from the prescribed dose by greater […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 25/09/2026

OFFSITE NOTIFICATION San Clemente, CA, 09/24/2026 "On September 23, 2026, between approximately 2000 and 2200 PDT, a planned wastewater transfer continued after the intended transfer period, resulting in an unplanned discharge of approximately 5,000 gallons into the Unit 2 storm drain/intake […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 25/09/2026

LEAKING SEALED SOURCE San Antonio, TX, 09/17/2026 On September 17, 2026, at 1300 CDT, the DHA radiation safety officer (RSO) at Fort Sam Houston was notified of a leaking 13.6 mCi Ni-63 sealed source from a gas chromatograph. Wipes and leak tests were conducted. The wipes tested positive and […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 25/09/2026

STUCK-OPEN GAUGE SHUTTER Baytown, TX, 09/17/2026 "On September 17, 2026, the license notified the agency regarding a gauge whose source shutter mechanism had failed to function as intended. The gauge, a Texas Nuclear model 5205, contains a 100 mCi Cs-137 sealed source. The licensee reported that […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 23/09/2026

POTENTIAL LOST OR STOLEN SOURCE Hartselle, AL, 09/16/2026 On September 16, 2026, the licensee's radiation safety officer (RSO) discovered a closed eBay listing in Hartselle, Alabama with an M67 mortar sight unit, and M58 and M59 aiming post lights. The listing closed on July 10, 2026. It is […]

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