The World's First 20-Hour Airline Flight

Re:The World's First 20-Hour Airline Flight by JMTQp8lwXL on Friday October 18, 2019 @11:56AM (#21292448)

If you want to go with the 5 mSv limit, and a chest x-ray is 20 μSv, that's still 833 chest x-rays per year before hitting your annual quota.

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Re:The World's First 20-Hour Airline Flight by not_a_moth on Tuesday October 22, 2019 @05:06AM (#21321576)

Sorry your math adds up to 250 not 833 x-rays.

Importantly - each year simple, normal living exposes you to 3.5 mSv (see the same chart), so you only get 1.5 mSv to "allocate" to other exposures.

In other words you only get 75 chest x-rays per year.

By FAA rates of exposure on trans-pacific flights, you should take max 5-6 of those legs per year.

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