1 |
April 26, 1986 |
Kiev, Ukraine |
Mishandled reactor safety test at Chernobyl
nuclear reactor causes steam explosion
and meltdown, necessitating the evacuation of
300,000 people from Kiev and dispersing
radioactive material across Europe
|
4,056 |
$6,700 |
2 |
March 28, 1979 |
Middletown, Pennsylvania,
United States |
Equipment failures and operator error contribute to loss of coolant and partial core meltdown at Three Mile Island nuclear reactor |
0 |
2,400 |
3 |
March 9, 1985 |
Athens, Alabama, United States |
Instrumentation systems malfunction during startup, convincing the Tennessee Valley Authority to suspend operations at all three Browns Ferry Units |
0 |
1,830 |
4 |
February 22, 1977 |
Jaslovske Bohunice, Czechoslovakia |
Mechanical failure during fuel loading causes severe corrosion of reactor and release of radioactivity into the plant area, necessitating total decommission |
0 |
1,700 |
5 |
April 11, 1986 |
Plymouth, Massachusetts, United States |
Recurring equipment problems with instrumentation, vacuum breakers, instrument air system, and main transformer force emergency shutdown of Boston Edison’s Pilgrim nuclear facility |
0 |
1,001 |
6 |
February 1, 2010 |
Montpelier, Vermont, United States |
Deteriorating underground pipes from the Vermont Yankee nuclear power plant leak radioactive tritium into groundwater supplies in Vermont, resulting in the eventual shutdown of the plant |
0 |
700 |
7 |
December 26, 1985 |
Clay Station, California, United States |
Safety and control systems unexpectedly fail at Rancho Seco nuclear reactor, ultimately leading to the premature closure of the plant |
0 |
672 |
8 |
November 24, 1989 |
Greifswald, East Germany |
Electrical error causes fire in the main trough that destroys control lines and 5 main coolant pumps and almost induces meltdown |
0 |
443 |
9 |
March 31, 1987 |
Delta, Pennsylvania, United States |
Philadelphia Electric Company shuts down Peach Bottom units 2 and 3 due to cooling malfunctions and unexplained equipment problems |
0 |
400 |
10 |
September 2, 1996 |
Crystal River, Florida, United States |
Balance-of-plant equipment malfunction forces Florida Power Corporation to shut down Crystal River Unit 3 and make extensive repairs |
0 |
384 |
11 |
May 4, 1987 |
Kalpakkam, India |
Fast Breeder Test Reactor at Kalpakkam has to shut down due to the simultaneous occurrence of pump failures, faulty instrument signals, and turbine malfunctions that culminate in a refuelling accident that ruptures the reactor core with 23 fuel assembles, resulting in a two year shutdown |
0 |
300 |
12 |
February 2, 1995 |
Kota, Rajasthan, India |
The Rajasthan Atomic Power Station leaks radioactive helium and heavy water into the Rana Pratap Sagar River, necessitating a two year shutdown for repairs |
|
280 |
13 |
May 4, 1986 |
Hamm-Uentrop, Germany |
Operator actions to dislodge damaged fuel rod at Experimental High Temperature Gas Reactor release excessive radiation to 4 square kilometers surrounding the facility |
0 |
267 |
14 |
February 20, 1996 |
Waterford, Connecticut, United States |
Leaking valve forces Northeast Utilities Company to shut down Millstone Units 1 and 2, further inspection reveals multiple equipment failures |
0 |
254 |
15 |
March 22, 1975 |
Browns Ferry, Alabama, United States |
Fire burns for seven hours and damages more than 1,600 control cables for three nuclear reactors, disabling core cooling systems |
0 |
240 |
16 |
March 31, 1993 |
Bulandshahr, Uttar Pradesh, India |
The Narora Atomic Power Station suffers a fire at two of its steam turbine blades, damaging the heavy water reactor and almost leading to a meltdown |
0 |
220 |
17 |
December 19, 1987 |
Lycoming, New York, United States |
Fuel rod, waste storage, and water pumping malfunctions force Niagara Mohawk Power Corporation to shut down Nine Mile Point Unit 1 |
0 |
150 |
18 |
February 16, 2002 |
Oak Harbor, Ohio, United States |
Severe corrosion of control rod forces 24 month outage of Davis-Besse reactor |
0 |
143 |
19 |
March 17, 1989 |
Lusby, Maryland, United States |
Inspections at Baltimore Gas & Electric’s Calvert Cliff Units 1 and 2 reveal cracks at pressurized heater sleeves, forcing extended shutdowns |
0 |
120 |
20 |
September 15, 1984 |
Athens, Alabama, United States |
Safety violations, operator error, and design problems force 6 year outage at Browns Ferry Unit 2 |
0 |
110 |
20 |
August 27, 2009 |
St. Petersburg, Russia |
A cracked discharge accumulator and malfunctioning feed pump force the Leningrad Nuclear Power Plant reactor number 3 to close for extended repairs |
0 |
110 |
|