Japan has been given the okay by UN to dump radioactive waste water into the ocean, but nearby countries are protesting that its unsafe. Is it unsafe? Is it safe?
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It’s so safe you could drink it (assuming you sterilised it, filtered it, deslinated it etc). The concentration of tritium in the water is 190 Bq/m^3. The committed effective dose of tritium is something like 2 x 10^-10 Sv/Bq. So if you drank a pint of it you’d get a dose of 2 nanosieverts, which is about 30 seconds of background radiation.
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