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Globally, there have been at least 99 (civilian and military) recorded nuclear power plant accidents from 1952 to 2009 (defined as incidents that either resulted in the loss of human life or more than US$50,000 of property damage, the amount the US federal government uses to define nuclear energy accidents that must be reported), totaling US$20.5 billion in property damages.
Fifty-seven accidents or severe incidents have occurred since the Chernobyl disaster, and about 60% of all nuclear-related accidents/severe incidents have occurred in the USA. [10] Serious nuclear power plant accidents include the Fukushima nuclear disaster (2011), the Chernobyl disaster (1986), the Three Mile Island accident (1979), and the SL ...
2019 Radiation release during explosion and fire at Russian nuclear missile test site; 2017 Airborne radioactivity increase in Europe in autumn 2017; 2011 Fukushima Daiichi nuclear disaster; 2001 Instituto Oncologico Nacional radiotherapy accident; 2000 Samut Prakan radiation accident, Thailand. [3] 1999 and 1997 Tokaimura nuclear accidents
The demon core (like the core used in the bombing of Nagasaki) was, when assembled, a solid 6.2-kilogram (14 lb) sphere measuring 8.9 centimeters (3.5 in) in diameter.. It consisted of three parts made of plutonium-gallium: two hemispheres and an anti-jet ring, designed to keep neutron flux from "jetting" out of the joined surface between the hemispheres during implosi
Nuclear explosions loft this material high into the atmosphere as dust-, salt-, and sand-sized particles, and it can take up to 15 minutes to fall to the ground.
The Design Basis Accident (DBA) for a nuclear power plant is the most severe possible single accident that the designers of the plant and the regulatory authorities could reasonably expect. It is, also, by definition, the accident the safety systems of the reactor are designed to respond to successfully, even if it occurs when the reactor is in ...
WASH-740 was a report published by the U.S. Atomic Energy Commission (USAEC) in 1957. This report, called "Theoretical Possibilities and Consequences of Major Accidents in Large Nuclear Power Plants" (also known as "The Brookhaven Report"), estimated maximum possible damage from a meltdown with no containment building at a large nuclear reactor.
Production of parts for nuclear weapons began in 1953. At the time, the precise nature of the work at Rocky Flats was a closely guarded secret. The plant produced fission cores for nuclear weapons, used to "ignite" fusion and fissionable fuel. [12] Fission cores resemble miniaturized versions of the Fat Man nuclear bomb detonated above Nagasaki ...