Originally Posted by tpi2007
I was referencing to the tons of contaminated water from Fukushima in the post I was replying to, and as Blameless said, there is of course more of that around the planet.
He was also saying you're making mountains out of molehills with Fukushima, at least if you don't live in Japan.
As we used to say on the boat (SSN), 'Dilution is the solution to pollution.' (For the record, discharges at sea are limited and total fleet discharge is <0.4Cu/yr, so don't go freaking out over that as well) Which roughly translates into, there's so much freaking water in the ocean, the effects will be minimal. You should only worry as a health hazard if you're within 10NM of the zone, it'll be within US Federal (don't know Japan's) civilian limits at 10-50NM, it'll be around background at 50-100NM, >100NM will be negligible from background.
Of course that is assuming several factors, such as coolant being at a specific radioactivity level for each isotope. (ie within US federal limits, which it should be.)
If you were to dump coolant from the plant into the ocean until all the U-238 and nuclear waste isotopes decayed, you wouldn't raise ocean background levels outside that 100NM by measurable effect.DOE Study of USN (Discharges at Sea Page 7)Edited by BulletBait - 9/29/16 at 3:26pm