Date
|
Deaths
|
Details
|
Country
|
August 6, 1945
|
90,000-146,000
|
Nuclear bomb
|
Japan
|
August 9, 1945
|
39,000-80,000
|
Nuclear bomb
|
Japan
|
August 1945
|
1
|
Criticality accident
|
United States
|
May 1946
|
1
|
Criticality accident
|
United States
|
March 1, 1954
|
1
|
Nuclear bomb test
|
Marshall Islands
|
May 21, 1957
|
1
|
Criticality accident
|
Russia
|
September 29, 1957
|
200+
|
Nuclear waste accident
|
Russia
|
October 1957
|
33
|
Power plant fire
|
United Kingdom
|
February 10, 1958
|
3
|
Criticality accident
|
Russia
|
January 3, 1961
|
3
|
Power plant accident
|
United States
|
July 1961
|
8
|
Submarine accident
|
Atlantic Ocean
|
21 March-August 1962
|
4
|
Radiation accident
|
Mexico
|
July 23, 1964
|
1
|
Criticality accident
|
United States
|
May 1968
|
9
|
Submarine accident
|
Arctic Ocean
|
December 10, 1968
|
1
|
Criticality accident
|
Russia
|
1974-6
|
10
|
Radiotherapy accident
|
United States
|
January 5, 1976
|
2
|
Power plant accident
|
Slovakia
|
1980
|
7
|
Radiotherapy accident
|
United States
|
1980-9
|
6
|
Lost radiation source
|
Ukraine
|
October 5, 1982
|
5
|
Lost radiation source
|
Azerbaijan
|
March 1984
|
8
|
Lost radiation source
|
Morocco
|
August 1985
|
10
|
Submarine accident
|
Pacific Ocean
|
April 26, 1986
|
30-70
|
Power plant accident
|
Ukraine
|
October 1986
|
1
|
Submarine accident
|
Atlantic Ocean
|
September 1987
|
4+
|
Lost radiation source
|
Brazil
|
1989
|
1
|
Irradiation facility accident
|
El Salvador
|
1990
|
1
|
Irradiation facility accident
|
Israel
|
December 10-20, 1990
|
11
|
Radiotherapy accident
|
Spain
|
1991
|
1
|
Irradiation facility accident
|
Belarus
|
1992
|
3
|
Irradiation facility accident
|
China
|
1992
|
1
|
Radiological accident
|
United States
|
1994
|
1
|
Lost radiation source
|
Estonia
|
1996
|
3+
|
Research center accident
|
South Africa
|
August-December, 1996
|
13
|
Radiotherapy accident
|
Costa Rica
|
June 1997
|
1
|
Radiological accident
|
Russia
|
September 30, 1999
|
2
|
Power plant accident
|
Japan
|
January-February 2000
|
3
|
Radiological accident
|
Thailand
|
May 2000
|
2
|
Radiography accident
|
Egypt
|
August 2000-March 2001
|
17
|
Radiotherapy accident
|
Panama
|
August 9, 2004
|
4
|
Power plant accident
|
Japan
|
April 2010
|
1
|
Radiological accident
|
India
|
March 11, 2011
|
2+
|
Power plant accident
|
Japan
|
September 12, 2011
|
1
|
Power plant accident
|
France
|
August 8, 2019
|
5
|
Failed missile test
|
Russia
|
|