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[5] [6] Levels reached about 0.15 mSv per year worldwide, or about 7% of average background radiation dose from all sources, and has slowly decreased since, [7] with natural background radiation levels being around 1 mSv.
≈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 ...
[100] [193] Experts said exposure to this amount of radiation for 6 to 7 hours would result in absorption of the maximum level considered safe for one year. [193] On 16 March Japan's ministry of science measured radiation levels of up to 330 μSv/h 20 kilometers northwest of the power plant. [ 194 ]
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. [43]
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 ...
The effects of the 1979 Three Mile Island nuclear accident are widely agreed to be very low by scientists in the relevant fields. The American Nuclear Society concluded that average local radiation exposure was equivalent to a chest X-ray and maximum local exposure equivalent to less than a year's background radiation. [1]
Low-level radiation sickness due to short-term exposure [18] 750 7.5 × 10 ^ 2: Acute-USA EPA voluntary maximum dose for emergency life-saving work [6] 1,000 10 × 10 ^ 2: Hourly: 1,000,000: Level reported during Fukushima I nuclear accidents, in immediate vicinity of reactor [19] 3,000 3 × 10 ^ 3: Acute-