Domain of very low doses
Exposure to doses of less than 1 mSv can be considered as very low. The 1 mSv limit (shown in red on the far left) is the legal maximum for artificial sources of radiation besides medicine : medical exposures are excluded since this limit is exceeded when with a scanner or approached for a radiograph of the pelvis. Examples given of exposure to natural radioactivity or resulting from human activities are annual averages (besides the radiographies and the air flight). In the doses resulting from human activities, the share of the non-medical, in particular of nuclear power plants is low.