Dobryаk ( Практикант ) | |
22 дек 2015 13:56:44 |
Date | Location | Description | Fatalities | Cost (in millions 2006 US$) |
---|---|---|---|---|
3:07 p.m. Friday, December 12, 1952 | CRL, Ontario, Canada | The NRX accident. A hydrogen explosion occurred in the reactor core due to a cascade of malfunctions and operator errors. The world's first major nuclear reactor accident.[15][dead link] | 0 | See NRXaccident |
May 24, 1958 | CRL, Ontario, Canada | The NRU accident. A fuel rod caught fire and broke when removed, then dispersed fission products and alpha-emitting particles in the reactor building. | 0 | See NRUaccident. |
November 1978 | WR-1 Reactor at Pinawa, Manitoba, Canada | LOCA loss of coolant accident. 2,739 litres of coolant oil leaked, most of it into the Winnipeg River. The repair took several weeks for workers to complete.[16] | 0 | Unknown. |
August 1, 1983 | Pickering nuclear Reactor 2,Pickering, Ontario, Canada | LOCA loss of coolant accident. Pressure tube, that holds the fuel bundles, ruptured due to hydriding. All four reactors re-tubed with new materials (Zr-2.5%Nb) over ten years.[17] | 0 | 1 Billion dollars.[18] |
March 1986 | Bruce nuclear Reactor 2,Bruce County, Ontario, Canada | LOCA Loss of coolant accident. Pressure tube rupture during pressurizing test (reactor shut down). Pressure tube holds the fuel bundles.[19] | 0 | Unknown. |
August 2, 1992 | Pickering nuclear Reactor 1,Pickering, Ontario, Canada | A Heavy water leak of 2300 trillion becquerels of radioactive tritium into Lake Ontario, resulting in increased levels of tritium in Toronto drinking water .[20] | 0 | Unknown. |
December 10, 1994 | Pickering nuclear Reactor 2,Pickering, Ontario, Canada | LOCA loss of coolant accident. A spill of 185 tonnes of heavy water. The Emergency Core Cooling System was used to prevent a meltdown.[21][dead link][22] | 0 | Unknown. |
June 11, 2002 | Bruce nuclear Reactor 6, Bruce B station. Bruce County, Ontario, Canada | Pressure tube and calandria tube damage during a channel maintenance procedure, required replacement of the 2 tubes.[19] | 0 | Unknown. |
December 21, 2009 | Darlington nuclear station.Clarington, Ontario, Canada | Around 200,000 litres of water with trace amounts of radioactive isotope tritium coming from a storage tank mistakenly released by workers into Lake Ontario, representing 0.1% of the monthly allowed amounts of tritium for this power plant. .[23] | 0 | Unknown. |