this post was submitted on 22 Aug 2023
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[–] LazerFX@sh.itjust.works 29 points 1 year ago* (last edited 1 year ago) (2 children)

So I googled what the background level of Tritium is in seawater. The general consensus is that this various based upon where in the world you are, but it's typically around 500 - 750 becquerels of tritium per m^3^. The amount they're releasing is 190 becquerels of tritium per m^3^, or in other words, they're reducing the average tritum radioactivity of the water...

So why is this news? Why haven't the journalists gone, "Stupid people don't understand how radioactivity and volumetrics work, and are complaining about the Japanese releasing water that is so highly treated it's cleaner than the ocean average."?

--edit-- Not going to edit the above, but @zifk@sh.itjust.works correctly pointed out I'd got my units wrong... and then they got their units wrong replying. And that's why we need good journalism who can actually look into this fucking stuff properly, and give reasoned responses!

[–] zifk@sh.itjust.works 6 points 1 year ago* (last edited 1 year ago) (1 children)

Actually we both screwed up by a factor of 1000, the article states 190 becquerels of tritium per litre, not cubic meter.

~~Seems like you have the right order of magnitude, but~~ the sources I've seen gives the ocean close to 0.5-2 TU, or "Tritium Units" which correspond to 180 Bq/m^3. ~~So I wouldn't call the water being released as cleaner, just basically on average with the ocean already.~~

https://www.ldeo.columbia.edu/res/fac/etg.tmp/text/woce_method.html https://www.sciencedirect.com/science/article/pii/S0048969718348034

[–] LazerFX@sh.itjust.works 2 points 1 year ago (1 children)

This is why I should stick to computing ;) Thanks for the update.

[–] baked_tea@sh.itjust.works 2 points 1 year ago (1 children)

Still the comment should be and stay top because it's far more informative than most of comments usually

[–] LazerFX@sh.itjust.works 1 points 1 year ago

Thanks - I did edit it to say whoops, but it's still pretty informative I'd say. People get silly about radiation and then go out and tan in the sun for a few hours :P

[–] BeanCounter@sh.itjust.works 5 points 1 year ago

I live in South Korea and I honestly have no problem Japan doing what they do.

But most of the criticism comes from this: Can we trust them(Japanese government or scientists)?

I think I can, ergo no biggie for me. But the issue is that if something fails, if something gets screwed up, like they did in Fukushima, the problem will not only be theirs but ours as well. Will every filtrations process work as they should be? For a long period of time?

Few newspaper article cannot possibly answer these questions let alone a single headline, which, realistically, is vast majority of people's source of information.

"Leftist" newspapers here especially don't help this situations, misleading people to think that it's dangerous and that it's just unacceptable decision from our mortal enemy Japan. Mortal enemy, they say, when we are literally still at war with communist regime.