Events


Events 1 - 23 of 23 Items per page:
United States of America, 06 Apr 2018, INES: 2

Worker Overexposure

A radiographer received a whole body dose of 60 mSv (6.0 rem) on or about 4/6/2018. The radiographer was working at a fabrication shop with a radiography camera containing a 3.804 TBq (102.8 Ci) Ir-192 source. The radiographer finished performing radiography exposures in one location then carried...
Reported by Nuclear Regulatory Commission (NRC) of United States of America on 19 Apr 2018. Last update on 19 Apr 2018


United States of America, 14 Mar 2018, INES: 2

Worker Overexposure

A radiographer trainer received a whole body dose of 58 mSv (5.8 rem) on 3/14/2018. The radiographer assistant received a whole body dose of 46 mSv (4.6 rem). The licensee believes that the radiographers may have received the doses as a result of not fully retracting the 3.3 TBq (88.9 Ci) Ir-192...
Reported by Nuclear Regulatory Commission (NRC) of United States of America on 29 Mar 2018. Last update on 29 Mar 2018


Pakistan, 04 Aug 2017, INES: 2

Overexposure of Workers after Moderator Heavy Water Leak from Bonnet Gasket of Moderator Storage Tank Outlet Valve

On August 02, 2017, plant was in shutdown state when bonnet gasket of moderator drain tank outlet valve was replaced as per preventive maintenance program. After the maintenance work, moderator drain tank was slowly filled with heavy water on August 04, 2017 while its outlet valve was kept close as...
Reported by Pakistan Nuclear Regulatory Authority (PNRA) of Pakistan on 23 Feb 2018. Last update on 23 Feb 2018


France, 20 Oct 2017, INES: 2

Overexposure of a radiologists (hands exposure)

A radiologist, using a scanner for interventional radiology practices, has been exposed to an equivalent dose for the extremities of more than 500mSv, which is the yearly statutory limit, measured at the end of the first quarter of 2017. The assessment of the event shows that incorrect...
Reported by Autorité de Sûreté Nucléaire (ASN) of France on 14 Feb 2018. Last update on 14 Feb 2018


Mexico, 08 Feb 2018, INES: 1

Stolen Moisture/Density Gauge in León, Guanajuato

On 9 February 2018 at 16:00 UTC a notification via email was received by the Nuclear Safety Commission of Mexico (CNSNS) that a CPN moisture/density gauge, model MC-3-122 containing two radioactive sources of Am241:Be (1.79 GBq, SN 9725NK) and Cs-137 (252 MBq, SN 1162CX) was stolen from the back of...
Reported by Comision Nacional de Seguridad Nuclear y Salvaguardias of Mexico on 13 Feb 2018. Last update on 13 Feb 2018


France, 09 Nov 2017, INES: 2

Insufficient seismic resistance of emergency diesel generators

Surge (expansion) tanks of emergency diesel generators were found corroded.Inadequate maintenance lead to not identify the corrosion and as consequence manage it. Their condition was such that their expected seismic resistance was not ensured. Both of the two EDGs were concerned on Paluel reactors...
Reported by Autorité de Sûreté Nucléaire (ASN) of France on 25 Jan 2018. Last update on 25 Jan 2018


United States of America, 01 Dec 2017, INES: 2

Worker Overexposure

A cyclotron technician received 719 mSv (71.9 rem) to the left hand for the period of 11/6/2017 to 11/19/2017. The licensee contributed the dose to one of two instances that occurred during this period of time. 1) The technician worked on cleaning and rebuilding the central region of a cyclotron,...
Reported by Nuclear Regulatory Commission (NRC) of United States of America on 19 Jan 2018. Last update on 19 Jan 2018


Mexico, 16 Oct 2017, INES: 1

Stolen and recovered radioagraphy camera

On October 16th, 2017, at 10:00 hours UTC-6, The Comision Nacional de Seguridad Nuclear y Salvaguardias (the regulatory body) received a notification from a licensee that at 07:40 UTC-6, of the same day, a camera (SPEC 150 serial number 2295) containing an active source of 0.3 Ci of Ir-192 was...
Reported by Comision Nacional de Seguridad Nuclear y Salvaguardias of Mexico on 19 Oct 2017. Last update on 19 Oct 2017


France, 02 Aug 2017, INES: 2

Risk of loss of heat sink in case of an earthquake - 20 reactors concerned

In the event of an earthquake, a potential rupture of pipes from the water supply systems of the fire protection network (JPP circuit) and raw water filtration (SFI or CFI circuit) would flood the engines of the pumps from the raw water system (SEC), leading to the inoperability of the heat...
Reported by Autorité de Sûreté Nucléaire (ASN) of France on 16 Oct 2017. Last update on 16 Oct 2017


Australia, 22 Aug 2017, INES: 3

Exposure to Hands of Quality Control Analyst

A QC analyst, according to routine procedure, attempted to de-cap a crimped seal of a vial containing 4.5GBq of Mo-99 in a volume of 0.6ml of liquid. The vial was accidently dropped within the fume cupboard and splashed onto the gloves of the analyst. The analyst was wearing two pair of gloves and...
Reported by Australian Radiation Protection and Nuclear Safety Agency of Australia on 03 Oct 2017. Last update on 03 Oct 2017


France, 18 Aug 2017, INES: 2

Insufficient seismic resistance of a part of the canal embankment along the Tricastin NPP

Tricastin NPP is located at the immediate border of the Donzère-Mondragon canal. The NPP base level is situated 6 meters under the normal operation level of the canal. After the Fukushima Daiichi accident, ASN has requested EDF to conduct supplementary assessment of the canal embankment and any...
Reported by Autorité de Sûreté Nucléaire (ASN) of France on 28 Sep 2017. Last update on 28 Sep 2017


Sweden, 21 Sep 2017, INES: 2

Contamination event at research facility

On the 21 of September 2017 an event occured at Studsvik Nuclear AB in Sweden (SNAB). In the hot cell laboratory (HCL) the fire alarm was trigged accidentally and inergen gas was pressed into the cells in the cell line. This, in return, pushed contaminated air out from the cells. The contaminated...
Reported by Swedish Radiation Safety Authority of Sweden on 26 Sep 2017. Last update on 05 Dec 2017


Mexico, 01 Aug 2017, INES: 1

Stolen radioactive material

A portable CPN moisture/density gauge, Model #MC1, containing two sealed sources of radioactive material was stolen at approximately 16:20 hours (UTC-6) on August 1st, 2017, in San Nicolas de los Garza, Nuevo Leon, Mexico. The gauge contains approximately 209 MBq of Cesium - 137 and 1.77 GBq of...
Reported by Comision Nacional de Seguridad Nuclear y Salvaguardias of Mexico on 03 Aug 2017. Last update on 03 Aug 2017


Japan, 06 Jun 2017, INES: 2

Exposure of Workers at Plutonium Fuel Research Facility

Body contamination was found from five workers who dealt with condition check of storage containers that stored nuclear fuel material at the Plutonium Fuel Research Facility (PFRF) in Oarai Research & Development Center of Japan Atomic Energy Agency on June 6, 2017. In the PFRF, mixed powder of...
Reported by Nuclear Regulation Authority of Japan on 02 Aug 2017. Last update on 20 Apr 2018


United States of America, 04 Jul 2017, INES: 2

Uranium accumulation in a glove box air purification system

At a fuel fabrication facility (BWX Technologies, Inc.), unanticipated deposits of high-enriched uranium were discovered in two unfavorable geometry containers. Prior to discovery, the containers were assumed to be non-uranium bearing and were not included in the licensee’s safety analysis. BWX...
Reported by Nuclear Regulatory Commission (NRC) of United States of America on 31 Jul 2017. Last update on 27 Nov 2017


Belgium, 25 Jul 2017, INES: 2

Exposure of airplane passengers due to inadequate use of type B transport package

On 25 July 2017 on arrival of a package containing a disused Ir-192 source of 29.6 GBq at the Belgian consignee an abnormal radiation level was detected (alarm of a personal dosimeter at 100 μSv/h triggered at about 1.50 m from the package). The package was immediately shielded with a lead blanket...
Reported by Federal Agency for Nuclear Control (FANC) of Belgium on 29 Jul 2017. Last update on 07 Aug 2017


United States of America, 21 Jul 2017, INES: 2

Worker Overexposure

A pharmacy technician received an elevated whole body dose in April 2017. The licensee requested the expedited processing of the May 2017 whole body dosimeter and a dose of 110 mSv (11 rem) was reported. The isotopes involved are believed to be Mo-99/Tc-99m, Tc-99m, and Ga-68. The U.S. statutory...
Reported by Nuclear Regulatory Commission (NRC) of United States of America on 28 Jul 2017. Last update on 28 Jul 2017


France, 20 Jun 2017, INES: 2

Emergency diesel generators auxiliary systems not compliant with seismic requirements on the 1300 MW reactors (8 sites - 20 reactors)

Each 1300 MW French type reactor is equipped with 2 EDGs which redundantly power several safety systems in case of a loss of external power, in particular following an earthquake. EDGs are composed of an alternator, a diesel engine and auxiliary systems (cooling system, pre-lubrication,...
Reported by Autorité de Sûreté Nucléaire (ASN) of France on 21 Jun 2017. Last update on 21 Jun 2017


United States of America, 28 Apr 2017, INES: 2

Overexposure to Radiographer

After the performance of an industrial radiography exposure, the licensee radiographer approached the collimator to collect the film without his survey meter. The source was not completely retracted inside the camera. The radiographer dosimeter was processed and a whole body dose of 0.054 Sv...
Reported by Nuclear Regulatory Commission (NRC) of United States of America on 13 Jun 2017. Last update on 13 Jun 2017


United States of America, 15 May 2017, INES: 2

Overexposure to Radiographer

During the performance of industrial radiography, the licensee radiographer approached the collimator without his survey meter. The radiographer positioned the collimator in preparation for an exposure shot without first retracting the 3.552 TBq (96 Ci) Se-75 source back inside the camera. Based on...
Reported by Nuclear Regulatory Commission (NRC) of United States of America on 24 May 2017. Last update on 24 May 2017


United Kingdom, 05 Feb 2017, INES: 2

Over Exposure of an Operator From a Puncture Wound During Work in an Active Glovebox

Routine glovebox work was taking place to empty a glovebox sump to clear a level alarm. The operator's first action used the normal plant methods; no equipment is removed from the sump to do this. As the alarm did not clear, the operator proceeded to remove and clean the probe, a task that the...
Reported by Office for Nuclear Regulation (ONR) of United Kingdom on 26 Apr 2017. Last update on 26 Apr 2017


Mexico, 23 Apr 2017, INES: 2

Stolen source in Tlaquepaque, Jalisco

On April 24th, 2017 at 12:51 hours UTC-6, the National Commission of Nuclear Safety and Safeguards (the mexican regulatory authority) received a notification from a licensee, that on April 23th, 2017, at 03:00 UTC-6, a vehicle transporting an industrial radiography device, containing a source of...
Reported by Comision Nacional de Seguridad Nuclear y Salvaguardias of Mexico on 25 Apr 2017. Last update on 25 Apr 2017


United States of America, 31 Dec 2016, INES: 1

Overexposure to Radiographer

As a result of a recent inspection by the State of Oklahoma, the licensee has learned that one of their radiographers received an annual whole body dose of 58.1 mSv (5.81 rem) for calendar year 2016. The overdose was accumulated over the course of the year. There were no unusual circumstances...
Reported by Nuclear Regulatory Commission (NRC) of United States of America on 21 Apr 2017. Last update on 21 Apr 2017


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