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The 1986 nuclear reactor explosion at Chernobyl was categorized as a Level 7 accident, which is the highest possible ranking on the INES scale, due to widespread environmental and health effects and "external release of a significant fraction of reactor core inventory". [57]
≈0.4 1.0 ≈4 ≈10 Thermal radiation—effective ground range GR / km: Fourth degree burns, Conflagration: 0.5 2.0 10 30 Third degree burns: 0.6 2.5 12 38 Second degree burns: 0.8 3.2 15 44 First degree burns: 1.1 4.2 19 53 Effects of instant nuclear radiation—effective slant range 1 SR / km: Lethal 2 total dose (neutrons and gamma rays) 0 ...
Radiation poisoning, also called "radiation sickness" or a "creeping dose", is a form of damage to organ tissue due to excessive exposure to ionizing radiation. The term is generally used to refer to acute problems caused by a large dosage of radiation in a short period, though this also has occurred with long-term exposure to low-level radiation.
The single-most important thing to remember if a nuclear bomb is supposed to explode, he says, is to shelter in place. "There were survivors in Hiroshima within 300 meters of the epicenter ...
International Nuclear Event Scale Level 7 (major accident) Deaths: 1 suspected from radiation (lung cancer, 4 years later). [2] [3] Non-fatal injuries: 6 with cancer or leukemia, [4] 16 with physical injuries due to hydrogen explosions. [5] 2 workers hospitalized with radiation burns [6] [7] Displaced: 164,000+ local residents
The 1.4 Mt total yield 1962 Starfish Prime test had a gamma output of 0.1%, hence 1.4 kt of prompt gamma rays (the blue 'pre-ionisation' curve applies to certain types of thermonuclear weapons, for which gamma and X-rays from the primary fission stage ionize the atmosphere and make it electrically conductive before the main pulse from the ...
The Fukushima Daiichi nuclear accident was originally rated as INES 5, but then upgraded to INES 7 (the highest level) when the events of units 1, 2 and 3 were combined into a single event and the combined release of radiological material was the determining factor for the INES rating.
[9] [10] [11] This was the 1.2 kiloton Buster-Jangle Uncle, [12] which detonated 17 ft (5.2 m) beneath ground level. [10] The test was designed as a scaled-down investigation of the effects of a 23-kiloton ground-penetrating gun-type fission weapon that was then being considered for use as a cratering and bunker-buster weapon. [ 13 ]