Fallout from civilian and military nuclear activities
The annual doses resulting from civilian and military uses have greatly decreased since the 1950’s. The graphs above show the average contributions from atmospheric atomic bomb tests, nuclear reactors and the Chernobyl accident. After having reached a maximum of 0.120 millisievert (mSv) in the 1960’s, the contribution made from nuclear bomb tests has dropped to a few thousandths of a mSv. The three contributions combined make up less than 1% of the dose resulting from natural radioactivity, and less than the dose produced from a single scanner or X-ray radiography: providing doses equivalent to those absorbed in a short airplane ride (NB: the scale of the vertical axis of the graph goes up by factors of 10).
IN2P3 (Source G.Gerber : analysis of UNSCEAR 2000 report)