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sYou are not signed in. Sign In Register IAEA NUCLEUS Home Events The INES Scale About News Latest Events United Kingdom, 15 Nov 2023, INES: 2 Partial loss of post-trip cooling The planned reactor trip triggered switching of the reactor’s eight Gas Circulators’ (GC) power supply from nominal - 11kV” to variable speed – 3.3kV”. The 3.3kV power supply is provided by four Variable Frequency Convertors (VFC) and four Variable Speed Drives (VSD). In this case two VFC failed... Reported by Office for Nuclear Regulation (ONR) of United Kingdom on 29 Apr 2024 Last update on 29 Apr 2024 United States of America, 22 Feb 2024, INES: 2 Worker Exceeded Annual Extremity Dose Limit An employee received a dose of 0.95 Sv (95 rem) to the extremities (hands) due to improper handling and response to an incident involving a damaged 85.1 MBq (2.3 mCi) Co-60 source. This dose was estimated by the Illinois Emergency Management Agency and confirmed by the licensee. The source was... Reported by Nuclear Regulatory Commission (NRC) of United States of America on 17 Apr 2024 Last update on 17 Apr 2024 United Kingdom, 31 Dec 2019, INES: 2 Radon Exposure at Boarding School The incident occurred at a private boarding school where pupils, employees and their children had been exposed to high levels of radon gas in the atmosphere. The two employees and their two children were exposed to the high radon gas levels as a result of working and living at the school. The... Reported by Office for Nuclear Regulation (ONR) of United Kingdom on 26 Jan 2024 Last update on 26 Jan 2024 Mexico, 04 Jan 2024, INES: 0 Declaration of Unusual Event (NUP-4.1) On January 4, 2024, the Unit 1 was operating at 100% power. At 09:00 (local time) the steam tunnel cooling unit 1-RRA-FC-009A” was started due to equipment rotation resulting in the loss of energy in the Motor Control Center (MCC) 1-R31-MCC-1BA-AA” with the failure of the electrical protection of... Reported by Comision Nacional de Seguridad Nuclear y Salvaguardias of Mexico on 12 Jan 2024 Last update on 12 Jan 2024 United States of America, 26 Sep 2023, INES: 2 Worker Exceeded Annual Whole Body Dose Limit A radiography trainee received a dose of 0.075 Sv (7.50 rem) to the whole body and 0.258 Sv (25.8 rem) to the extremities due to a disconnected 2.33 TBq (63 Ci) Ir-192 source. This dose was determined through reconstruction of the event and dose calculations. The trainee did not wear his dosimetry... Reported by Nuclear Regulatory Commission (NRC) of United States of America on 07 Dec 2023 Last update on 07 Dec 2023 All EventsSite Sponsors 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). Disclaimer 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 moreRSS Feed Version 7.1.7653, Copyright ©2010-2024 International Atomic Energy Agency (IAEA). All rights reserved. Disclaimer Contact Us IAEA NEA...