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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 · 7h

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 · 8h

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 · 8h

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 · 9h

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

LOST MOISTURE DENSITY GAUGES Forth Worth, TX, 09/16/2026 "The Agency received notification of two Troxler moisture density gauges lost in transport through [a common carrier]. The two missing gauges are a model 3440P (S/N 75617) last scanned September 4, 2026, and picked up in Ft. Worth, TX, and […]

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

MEDICAL EVENT Seattle, WA, 09/14/2026 An investigational therapeutic dose of Pb-212 was delivered to the licensee with an activity of approximately 7 mCi, at a concentration of approximately 1 mCi/mL. The vial was to be used to administer a prescribed dosage of 6 mCi after decay. Due to the […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 18/09/2026

BATTERY CELL VOLTAGE ISSUE Bridgman, MI, 09/10/2026 "On September 10th, 2026, Cook Nuclear Plant (CNP) completed a Part 21 evaluation concerning a voltage issue involving 1-BATT-CD plant battery, cell 50, in Unit 1. The affected [battery cell] is a C & D Technologies Inc. model LCR-33 NUC […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 18/09/2026

CIRCUIT BREAKER DEFECT Florence, FL, 07/09/2026 On July 9, 2026, ABB Florence was notified by NextEra Energy of a defect discovered during inspection prior to installation of a K-Line K-600 circuit breaker. A cotter pin was found missing from the breaker paddle. ABB's engineering evaluation […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 18/09/2026

FOUND ORPHAN GAUGES Fort Worth, TX, 09/11/2026 On September 11, 2026, the Department received a notification from Vega Americas, Inc. regarding two radioactive gauges discovered on a fracking blender trailer acquired by J-Mac Completion, a Fort Worth-based company. The trailer, along with an […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 18/09/2026

STUCK RADIOGRAPHY SOURCE Midland, TX, 09/10/2026 "On September 10, 2026, the licensee notified the Agency of an industrial radiography source that failed to retract during exposure operations. The source is a 32-curie Iridium-192 sealed source contained in a QSA Delta 880 camera. The licensee […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 18/09/2026

MISSING SOURCE Carol Stream, IL, 09/03/2026 "On September 3, 2026, Bard Brachytherapy (IL-02062-01) called to report a discrepancy in an order of Pd-103 brachytherapy seeds received from Theragenics Corporation in Georgia on September 3, 2026. The amount requested was 90 Pd-103 seeds; the amount […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 18/09/2026

MEDICAL EVENT Daytona Beach, FL, 09/10/2026 "On September 10, 2026, at 1230 EDT, BRC received a report of a medical event involving a patient being treated with Y-90 Theraspheres. Only 40 percent of the prescribed 53.8 mCi dose was delivered to the patient. The treating physician notified the […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 18/09/2026

DAMAGED GAUGE Reston, VA, 09/09/2026 "At approximately 1100 EDT on September 9, 2026, VRMP was notified of an incident involving damage to a portable nuclear gauge. At approximately 0845, a Troxler model 3430 portable nuclear density/moisture gauge (S/N 36634), containing 8 mCi of Cs-137 (S/N […]

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NRC Event Notification Reports @whoopsie.mastodon.tds.xyz.ap.brid.gy · 18/09/2026

EQUIPMENT MALFUNCTION Northridge, CA, 09/08/2026 On September 8, 2026, at approximately 1220 PDT, during high-dose-rate (HDR) brachytherapy treatment for a facial tumor, the HDR unit failed to retract the Ir-192 source after the intended exposure. Facility staff immediately recognized the unit's […]

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