For those operating with in Japan or transiting Japanese airspace, it looks like there could be an increased risk of radiation exposure from the damaged reactors in Fukushima. I wanted to start a thread to collect resources that can help educate crews. I'm no expert, but hopefully the forum collective can build a weblink resource to help crews make rational, informed decisions about their personal safety when operating near this radiation leak.
OK, here it goes:
I've seen the press reporting radiation measurements in both "rem" and "sievert". It appears that the two units are synonymous based on this chart:
Radiation Units Conversion Table
Here's a chart showing "typical" doses
http://www.berkeleynucleonics.com/wo...03/japanpr.jpg
(note that the radiation level around one of the reactors stood at 400,000 microsiverts
per hour)