Notiz: Nuclear Power Plant Accidents

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Nuclear Power Plant Accidents

1952
Dec. 12, Chalk River, nr. Ottawa, Canada: a partial meltdown of the reactor’s uranium fuel core resulted after the accidental removal of four control rods. Although millions of gallons of radioactive water accumulated inside the reactor, there were no injuries.
1957
Oct. 7, Windscale Pile No. 1, north of Liverpool, England: fire in a graphite-cooled reactor spewed radiation over the countryside, contaminating a 200-sq-mi area.South Ural Mountains: explosion of radioactive wastes at Soviet nuclear weapons factory 12 miles from city of Kyshtym forced the evacuation of over 10,000 people from a contaminated area. No casualties were reported by Soviet officials.
1976
nr. Greifswald, East Germany: radioactive core of reactor in the Lubmin nuclear power plant nearly melted down due to the failure of safety systems during a fire.
1979
March 28, Three Mile Island, nr. Harrisburg, Pa.: one of two reactors lost its coolant, which caused the radioactive fuel to overheat and caused a partial meltdown. Some radioactive material was released.
1986
April 26, Chernobyl, nr. Kiev, former U.S.S.R.: explosion and fire in the graphite core of one of four reactors released radioactive material that spread over part of the Soviet Union, Eastern Europe, Scandinavia, and later Western Europe. 31 claimed dead. Total casualties are unknown and estimates run into the thousands. Worst such accident to date.

Wirtschaft: Chronology of nuclear accidents worldwide

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Chronology of nuclear accidents worldwide

Reference: CNN-Reuters

LONDON (Reuters) — Following is a chronology of major nuclear incidents over the last 40 years. Some have come to light only since the end of the Cold War.

October 7, 1957 – Fire destroyed the core of a plutonium-producing reactor at Britain’s Windscale nuclear complex — since renamed Sellafield — sending clouds of radioactivity into the atmosphere. An official report said the leaked radiation could have caused dozens of cancer deaths.

1957/8 – A serious accident occurred during the winter of 1957-58 near the town of Kyshtym in the Urals. A Russian scientist who first reported the disaster estimated that hundreds died from radiation sickness.

January 3, 1961 – Three technicians died at a U.S. plant in Idaho Falls in an accident at an experimental reactor.

July 4, 1961 – The captain and seven crew members died when radiation spread through the Soviet Union’s first nuclear-powered submarine. A pipe in the control system of one of the two reactors had ruptured.

1965 – The U.S. Atomic Energy Commission deliberately produced a low intensity radioactive cloud from a nuclear reactor over Los Angeles.

October 5, 1966 – The core of an experimental reactor near Detroit partly melted when a sodium cooling system failed.

October 17, 1969 – In Saint-Laurent, France, a fuel-loading error sparked a partial meltdown at a gas-cooled power reactor.

1974 – Reported explosion in a Soviet breeder plant at Shevchenko on the Caspian Sea.

December 7, 1975 – An accident occurred at the Lubmin nuclear power complex near Greifswald on the Baltic coast in former East Germany. A short-circuit caused by an electrician’s mistake started a fire. Some news reports said there was almost a meltdown of the reactor core.

March 28, 1979 – America’s worst nuclear accident occurred at the Three Mile Island plant near Harrisburg, Pennsylvania. A partial meltdown of one of the reactors forced the evacuation of residents after radioactive gas leaked into the atmosphere.

Aug 7, 1979 – Highly enriched uranium spewed out of a top-secret nuclear fuel plant in Tennessee.
Around 1,000 people were contaminated with up to five times as much radiation as they would normally receive in a year.

April 25, 1981 – Officials said around 45 workers were exposed to radioactivity during repairs to a problem-ridden plant at Tsuruga, Japan.

November 1983 – Britain’s Sellafield plant accidentally discharged radioactive waste into the Irish Sea, prompting environmentalists to demand its closure.

August 10, 1985 – An explosion devastated the Shkotovo-22 ship repair facility which services Soviet navy nuclear-powered vessels. Ten people were killed and many died later from radiation exposure.

January 6, 1986 – One worker died and 100 were injured at a plant in Oklahoma when a cylinder of nuclear material burst after being improperly heated.

April 26, 1986 – Date of the world’s worst nuclear accident. An explosion and fire at the Chernobyl nuclear plant spewed radiation over much of Europe. Thirty-one people died in the immediate aftermath of the explosion. Hundreds of thousands of people were moved from the area and a similar number were believed to have suffered from the effects of radiation.

March 24, 1992 – Radioactive iodine and inert gases escaped into the atmosphere after a loss of pressure in a reactor channel at the Sosnovy Bor station near St Petersburg in Russia, triggering international concern.

November 1992 – In France’s most serious nuclear accident, three workers were contaminated after entering a nuclear particle accelerator in Forbach without protective clothing. Executives were jailed in 1993 for failing to take proper safety measures.

November 1995 – At Chernobyl, serious contamination occurred when fuel was being removed from one of the reactors. One person received the equivalent of a year’s permitted radiation.

November 1995 – Two to three tons of sodium leaked from the secondary cooling system of Japan’s Monju prototype fast-breeder nuclear reactor in a