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
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
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
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
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