Latest Events

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

All Events >
Site Sponsors
Site Sponsors: IAEA, NEA and WANO
This site is hosted by the International Atomic Energy Agency (IAEA) and co-sponsored by the Nuclear Energy Agency of the Organization of Economic Cooperation Development (OECD/NEA) and World Association of Nuclear Operators (WANO).
This site is hosted by the IAEA, however, event reports are filed and updated by authorities in participating countries, which remain responsible for all related content. Read more >