There is tricky aspect to be aware of. Contamination from a wild scattering event such as a meltdown does not evenly distribute the contamination. A lot of "hot" spots or contaminated fragments are scattered in a zone where the average may be reasonable low. So while one person my show very little exposure, the other person that sat right on top of smattering of cobalt residue could show up really zapped. This happened to me in a very low grade way, but it got across the point that an average is not a case of everyone getting the same dose. It is the result of low doses and high doses being mathematically manipulated.
Which is why people going into the exclusion zone have meters to warn them when they approach a hot spot. The tour actually visits one or two such spots, even had a little game to see who got the highest reading, before quickly moving on. Here's the article, The Nuclear Tourist - National Geographic Magazine
Interesting article. That sounds like the Russian approach to radiation...let's play games with it. (Same type of game that blew up the reactor.) Now the game is making it a tourist attraction.
What I learned is the degree that exceptionally toxic, radioactive particles are going to exist in the background of less intense material. Scarce 'poison pills' that can kill you yet are difficult to find and mobile. Bob Wilson
The issue is, to what extent will the partially contained failures of these reactors influence nuke plans for the next few decades. We need more E, we like low prices, but sooner or later externalities must get included.
I'm a bit more than halfway thru this 25 minute video that I recently learned about: Inside Fukushima's Time Bomb - Al Jazeera English. It does include a visit to the plant and standing near the reactor buildings.
