Radiation exposure: a quick guide to what each level means | World news
Radiation exposure levels compared. Click image for graphic As radiation exposure around the Fukushima nuclear power plant reach levels of 400mSv per hour (although they've since gone down), we thought it was time to put the figures into perspective.
Radiation is all around us, all the time. But what level does it have to get to before it becomes really dangerous?
The World Nuclear Association (which represents the 'global nuclear profession') does have a guide.
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