Here’s an interesting chart on usual and unusual levels of radiation.
Starting at top left, there’s living in the modern world – who knew that sleeping next to someone generated measurable radiation? That chart collapses into a small corner of the next, which is for workers at nuclear power plants under normal operations. This in turn collapses down into a corner of Stuff Going Pear-shaped.
The one day dose around the Fukishima plant a week ago falls in the second chart set, and was just a little more than a mammogram.
Still: It made for a lot of entertaining television from the folks who needed to take a break from whatever other Malthusian catastrophe scaremongering scheme has fallen out of favor.