The Skeptical Teacher

Musings of a science teacher & skeptic in an age of woo.

Archive for March 15th, 2011

Japanese “Nuclear Fallout Map” is a FAKE!!!

Posted by mattusmaximus on March 15, 2011

[**Update (3-16-11): There also appears to be a fake text message warning people of “fallout” coming their way.  Just an FYI, folks.]

You know, over the weekend when I was doing a bunch of research for my last blog post – Know Nukes: The Japanese Earthquake & Anti-Nuclear Hysteria – I briefly ran across an image about the supposed “fallout pattern” from the Fukushima nuclear plant in Japan.  I thought, “What a bunch of bullshit” and then moved on; not until later did I think that we’d probably be seeing that image again in the context of a hysterical, ranting chain email.  And I was right – here it is…

This is a completely, 100% bogus map, as is the email associated with it! As the fine researchers at Snopes.com have discovered, it has no association with the Australian Radiation Services, and any implication by the map that there will be nuclear fallout, a large release of radiation, or any kind of far-reaching health/environmental damage is nothing more than rank fear-mongering.

I don’t know what kind of asshole puts something like this image out there at a time like this, but I don’t find this funny in the least.  Most especially at times such as these, what we really need is to slow down, act calmly & coolly, and think about things in as rational manner as possible.  Freaking out, going hysterical, and blindly buying into & passing along garbage such as this “map” is only going to make a bad situation far, far worse.

[**Update (3-17-11): On the question of the Fukushima site and radiation, if you want to get more regular, reliable updates, I suggest using the World Nuclear News website – here’s more from that site in a recent update…

… peaking at 400 millisieverts per hour (40,000 mrem/hour) on the inland side of unit 3, and 100 millisieverts per hour (10,000 mrem/hour) on the inland side of unit 4. At the highest exposure rate, a nuclear worker or soldier could remain in the area for less than 40 minutes before leaving the site, unable to return. …

… Despite high levels of radiation close to the units, levels detected at the edge of the power plant site have been steadily decreasing.

17 March, 4.00pm  — 0.64 millisieverts per hour (64 mrem/hour)

17 March, 9.00am — 1.47 millisieverts per hour (147 mrem/hour)

16 March, 7.00pm — 1.93 millisieverts per hour (193 mrem/hour)

16 March, 12.30pm — 3.39 millisieverts per hour (339 mrem/hour)

This means that if you are at the edge of the Fukushima site itself, then receiving about 60 mrem/hour is like getting 2 or 3 chest x-rays per hour, which is a very strong dose of radiation.  However, the intensity of the radiation gets a lot weaker the further away you get from the source (I believe it follows an inverse square law).  Thus, it should be noted that if the radiation levels are that low at the edge of the power plant site, then they are most likely well within acceptable levels by the time you get to the edge of the evacuation zone, 30+ km away.  And there’s certainly no danger to people far beyond that point, including here in the United States and Canada.  Thus, despite the fact that some radiation has been released on the Fukushima site itself, the notion that any kind of “fallout cloud” will spread far & wide beyond that site is utter nonsense.

In addition, a good reference on the levels of radiation exposure (and related health effects) can be found here – http://www.epa.gov/radiation/understand/health_effects.html#anyamount – note that those values are in rems, whereas most of the exposure I’ve been referencing in these reports is in milli-rems (mrems).  Bottom line: the people who are going to be affected the most are the workers right there on site, and I wouldn’t be surprised if some of them are getting a potentially lethal dose; as for everyone else, I think the danger is practically non-existent.]

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