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Japan

In the Pacific, Outcry Over Japan's Plan To Release Fukushima Wastewater (nytimes.com) 141

The proposal has angered many of Japan's neighbors, particularly those with the most direct experience of unexpected exposure to dangerous levels of radiation. From a report: Every day at the Fukushima Daiichi nuclear plant in Japan, officials flush over a hundred tons of water through its corroded reactors to keep them cool after the calamitous meltdown of 2011. Then the highly radioactive water is pumped into hundreds of white and blue storage tanks that form a mazelike array around the plant. For the last decade, that's where the water has stayed. But with more than 1.3 million tons in the tanks, Japan is running out of room. So next year in spring, it plans to begin releasing the water into the Pacific after treatment for most radioactive particles, as has been done elsewhere. The Japanese government, saying there is no feasible alternative, has pledged to carry out the release with close attention to safety standards. The plan has been endorsed by the United Nations' nuclear watchdog.

But the approach is increasingly alarming Japan's neighbors. Those in the South Pacific, who have suffered for decades from the fallout of a U.S. nuclear test in the Marshall Islands, are particularly skeptical of the promises of safety. Last month, a group representing more than a dozen countries in the Pacific, including Australia and the Marshall Islands, urged Tokyo to defer the wastewater releases. Now, Japan is poised to forge ahead even as it risks alienating a region it has tried in recent years to cultivate. Nuclear testing in the Pacific "was shrouded in this veil of lies," said Bedi Racule, an antinuclear activist from the Marshall Islands. "The trust is really not there."

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In the Pacific, Outcry Over Japan's Plan To Release Fukushima Wastewater

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  • They flush the water through the reactors to cool them and then put the water into tanks.

    Why not take the water out of the tanks and flush it through the reactors again after it's had a chance to cool off? Then they could get away with whatever quantity of water is used for the flush plus whatever is needed to cover the cooling down time and the requirement for added fresh water and for contaminated water disposal pretty much goes away.

    • If they keep reusing it they will never be able to say it is 'safe enough' to release.
      • Thats not how pwr works. Try again.
    • by AmiMoJo ( 196126 )

      Apparently there are multiple issues. The system isn't designed for recycling, and since the reactors melted down it's not easy to get anywhere near them to adjust it.

      Another issue is that if you recycle then you contaminate the intake, and that just adds to your problems.

      The intake is damaged too, and due to the reactors being high level nuclear contamination sites it's difficult to fix the leaks. No problem if it's clean water being fed in, big problem if it's contaminated waste water.

      • If the treated water isn't safe enough to be reused to cool the reactor, it isn't safe enough to be released into the oceans.
        • by AmiMoJo ( 196126 )

          Quite. They are saying that it will be diluted enough to be safe, but that's questionable.

  • by bool2 ( 1782642 ) on Friday December 30, 2022 @04:05PM (#63168808) Homepage
    At some point you'd think all that stored water would have cooled down enough to reuse as coolant instead of releasing into the sea. Maybe someone can give insight?
    • Re: Reuse it? (Score:5, Insightful)

      by sl3xd ( 111641 ) on Friday December 30, 2022 @04:42PM (#63168884) Journal

      It's not so simple as re-using it. "Plain" water itself is part of the nuclear reaction, so injecting radioactive water changes the equation ever so slightly.

      It's a matter of "which is actually safer for everybody," and letting the experts who are actually qualified to make decisions make the call.

      The hard reality is something *will* fail soon, and waiting really isn't an option given the volume of water involved - something's going to fail. A planned water treatment and controlled release is likely a better option than an unplanned, untreated, and sudden release when a tank fails.

      So, people of Earth: pick your poison, because you're drinking one. The UN approved one.

      There are already at least two uncontained nuclear reactors at the seabed, and their effects haven't been world-ending.

      Sometimes there's no happy ending, just one that's less sad.

      • It's a matter of "which is actually safer for everybody," and letting the experts who are actually qualified to make decisions make the call.

        So, not Tepco then.

      • Sound like a good idea. You're literally saying that we should allow for nuclear waste to be improperly disposed of because it's inevitable that it's going to be improperly disposed of and having it improperly disposed of in a slightly less dangerous way is a better idea.

        I do reject your dichotomy. I think it's perfectly possible to store the water until such time as it can be safely cleaned and released. I also think it's going to be very expensive to do that safely and that somewhere out there is a bu
        • by AmiMoJo ( 196126 )

          Not just businessmen. The government is involved too. That unlimited free insurance policy that they gave to nuclear plant operators is looking like a mistake now that it's being claimed on.

          Money is needed for a lot of other stuff, and instead it's going into the bottomless money pit that is Fukushima.

        • The problem is one of perspective. Yes Fukushima was bad however it hasn't been responsible for megadeath. The waste isn't being improperly disposed of it is being disposed of in a considered an rational manner.
          Business counts, money is often spent poorly which wastes lives and creates suffering. Invest your capital where it makes the most impact, for instances money spent on trying to separate the tritium from this waste can be spent on hospitals, electric cars or newer safer nuclear facilities. Simple ini

      • by evanh ( 627108 )

        How about reuse of filtered water then?

        They're saying they are going to filter it before dumping. Why not filter it then reuse instead.

        On that note. They probably should be filtering before storage even.

      • by nasch ( 598556 )

        The hard reality is something *will* fail soon

        Why? I get that they're running out of storage space, but why would a failure be imminent?

      • by sjames ( 1099 )

        But the radioactive stuff in the water is mostly reactor poison, that is, it would make it harder to get a chain reaction going. If they're unsure, they could dope it with boron (often present in emergency cooling water since it poisons the nuclear reaction by absorbing neutrons).

        If they REALLY REALLY want to be sure, they could do the full cleanup on it and then use it to cool the reactor rather than dumping it in the ocean.

      • Donâ(TM)t be so naive, read the data.

        Fukushima has a bit over 800TBq of tritium isotopes. In 2018 France discharged 11,460 TBq of tritium in the English Channel, which is more than 13 times the amount, in 2020-2022 South Korean nukes discharged over 4000 TBq annually.

        Basically if you dumped all this water in Fukushima you get the output of 2 US nuclear plants in the Pacific/Atlantic in the water or about 50-75% what each Canadian nuke dumps in the Great Lakes on a yearly basis.

        1 liter of ocean water co

    • To run a reactor you have to heat up the pressurizer until it forms a steam bubble. That displaces water you discharge to stowage tanks. If you filter it you have a higher radiation source than diluting it. Its a point source radiation equation. Its filtered in the ion exchanger in the Rc but not the engineroom. As long as its less than 20 curies its safe to dischage > 12mi at sea.
    • Reusing the cooling water would, I suspect, multiply the amount of radiation in the water - with every pass through the reactor, the water adds another 'dose' of radiation.

      The issue isn't temperature, it's radiation.

  • It is a weak beta emitter that cannot bioaccumulate. I wish I could swim in it before they release it just to shut up the antinuclear fearmongers. Note normal ocean water is more radioactive than this water.
    • by raftpeople ( 844215 ) on Friday December 30, 2022 @04:25PM (#63168860)
      This article on science.org indicates other more dangerous isotopes can be found in the water:
      https://www.science.org/conten... [science.org]

      But in addition to tritium, more dangerous isotopes with longer radioactive lifetimes, such as ruthenium, cobalt, strontium, and plutonium, sometimes slip through the ALPS process, something TEPCO only acknowledged in 2018. The company now says these additional nuclides are present in 71% of the tanks. "These radioactive isotopes behave differently than tritium in the ocean and are more readily incorporated into marine biota or seafloor sediments," says Ken Buesseler, a marine chemist at the Woods Hole Oceanographic Institution.

      • by butlerm ( 3112 )

        Even without filtering the volume of the ocean is so high relative to the volume of somewhat radioactive water here that with any distribution by ocean currents the latter is likely to not be measurable within weeks.

      • by AmiMoJo ( 196126 )

        They have already been found in seafood products from the area too, from previous discharges.

        Turns out all this stuff about nuclear waste being a minor issue and easy to process is bullshit. Over a decade later and they haven't managed to deal with it, and are mostly interested in reducing their costs as they spiral towards half a trillion Euros.

    • by khchung ( 462899 )

      It is a weak beta emitter that cannot bioaccumulate. I wish I could swim in it before they release it just to shut up the antinuclear fearmongers. Note normal ocean water is more radioactive than this water.

      This question has been asked many times in Asia already: If the water is so safe, why don't Japan pipe these water into their own potable water system, bottled them for sale, or use it for irrigation? Rather than choosing to release them into the sea against the wish of everyone else? Why didn't Japan govt officials all come and drink a few cups of these waters to show their confidence?

      • by robbak ( 775424 )

        Because there is a difference between something that is safe to pipe off-shore and mix in with terralitres of seawater, and something that is safe to put inside people.

        This slightly contaminated water is unarguably safe to slowly and in a controlled manner, mix in with the huge amount of also randomly contaminated water that makes up the Pacific Ocean.

  • by joe_frisch ( 1366229 ) on Friday December 30, 2022 @04:11PM (#63168818)
    Numbers matter. How many Curies of radiation are the talking about releasing and how does that compare to natural sources of radiation entering the ocean?
    • None and none. Itâ(TM)s cooling water, not spider venom.

    • by thegarbz ( 1787294 ) on Friday December 30, 2022 @06:50PM (#63169158)

      It's not a case of curies, but of isotopes and their ability to bioaccumulate. I suspect the number is still low, but you should note that actual radioactive particles are not the issue being discussed here.

      • by AmiMoJo ( 196126 )

        This is a very common mistake made by nuclear fans. The classic "banana equivalent dose" fallacy.

      • Agree - need to weight the isotopes by some multiplier for biological impact.
      • it is all nice until you have cancer

        then you think how to reduce the chances for it if not for you, for your children

        have no children to care about ? then you could do something good for the environment that will make Greta happy

        leave this world and go to the afterlife

    • by khchung ( 462899 )

      Numbers matter. How many Curies of radiation are the talking about releasing and how does that compare to natural sources of radiation entering the ocean?

      By this logic, then as long as one first dilute the nuclear waste with enough sea water, ANY nuclear waste is ok to be released to the ocean, right?

      So if we have X kg of highly radioactive wastes, as long as we slowly release it through a stream of sea water a little bit at a time, then fine, right?

      Don't you see any problem with that?

      • Don't you see any problem with that?

        Yeah the oceans would not longer be pristine like they are now.

      • No, I don't see a problem with it. Dilute it enough to be down to background radiation, and it will no longer be poisonous.

      • x What problem do you see? If the contribution from power generation overall is insignificant compared to the natural background, why worry? Even if the total is more than background, that isn't necessarily a cause for concern. The average radiation dose in the US has increased 2X in the last 30 years. Not from nuclear power but from medicine (CAT scans etc), this is viewed as OK because the risk from background (or a few X background) radiation is very small.

        remember the comparison is not with zero r
  • by jacks smirking reven ( 909048 ) on Friday December 30, 2022 @04:14PM (#63168828)

    Any nation concerned should be allowed (and Japan should welcome this) to go to the site and test for themselves the end result of Japan's treatment process.

    This is a simple answer, either the water is radioactive or it's not. Test for radiation, put it through a mass spectrometer if you want and then either it's good or it isn't and these countries can just say "it's not good because it contains X, Y and Z" rather than hemming and hawing about history and FUD here.

    • There's a problem with that approach: there is no 'undo' button. People can inspect all they want after the tritium et. al. is flushed into the ocean - if they're wrong, too late it's already intermixed into the ocean and there isn't the square root of jack shit to be done about it.

      That's kind of the point of the whole kerfuffle.

      • by jacks smirking reven ( 909048 ) on Friday December 30, 2022 @05:27PM (#63168982)

        Sorry, maybe It wasnt clear, this should be done before water gets realeased and fairly should be done on a regular basis.

        Point stands this is not something that is subjective, it is what it is, there is a fact of the matter of what the water contains, that should be clearly known to everyone concerned. If they don't trust the UN (and I can understand if they wouldn't) then do it yourself but you can't just say "I want you to stop because of what might be wrong"

    • Agree that people need to verify, not trust.

      But the comment about radioactivity tells me that you may have some technical knowledge, but you know almost nothing about radioactivity beyond a high school level. First, a mass spectrometer is NOT the device you use to detect radioactivity. Second (more importantly) everything is radioactive to some degree. No, you can’t argue with me. Full stop. No more discussion. Literally EVERY PIECE OF MATTER YOU SEE AROUND YOU is radioactive to some degree. Oran
      • by edwebdev ( 1304531 ) on Friday December 30, 2022 @11:43PM (#63169640)

        It's not just about the overall radioactivity of the sample. It's about the relative concentration of different radionuclides. Some radionuclides bioaccumulate strongly, while others do not. That's why you want mass spectrometry. Not to measure the radioactivity of the sample, but to see if the radioactivity is coming from radionuclides that pose a bioaccumulation hazard or others that do not. That information helps determine the "acceptable" level of radioactivity for release into the environment.

    • by AmiMoJo ( 196126 )

      No need, TEPCO have already admitted that it's radioactive and contains elements that accumulate in the ocean's biology.

      Their argument is that they already tried everything and can't remove that stuff, so it's got to be dumped in the sea or they will be on the hook for even more costs. Show some humanity, this is destroying their shareholder value!

    • Everything is radioactive. There's no such thing as "radioactive or not". Some things are more radioactive than others.

    • The water is radioactive. EVERYTHING is radioactive. Scientists working on certain physics experiments (like double-beta decay) put enormous effort into finding materials that are less radioactive than typical but they are STILL radioactive.

      The question is always how much of what isotopes are present and what is the risk if they are released compared to the benefit. That is a tradeoff people make (whether they know it or not) every time they get on an airliner, go somewhere with lots of granite in the
  • Bet nobody will poach fish,squid,sharks,etc. for a very long time.
    • by TWX ( 665546 )

      I wouldn't take that bet.

      They'll fish them all the same, but those doing the fishing simply won't eat them themselves.

  • by quonset ( 4839537 ) on Friday December 30, 2022 @04:21PM (#63168842)

    Because that's how you get Godzilla.

  • by rossdee ( 243626 ) on Friday December 30, 2022 @05:01PM (#63168916)

    If there is Tritium and Deuterium Oxide, won't they be able to use those isotopes of hydrogen when we get a working fusion reactor?

    Of course some of it may be 'slightly heavy water' also known as Deuterium Hydroxide.

    DOH

    I heard that that was invented by Homer Simpson when he was working at the plant owned by Montgomery Burns

  • If you run it through the first half of a distiller, you remove whatever is suspended, If you keep half an eye on the temperature, you also get whatever is dissolved in it. That's how one makes distilled water, after all.

    Whatever is left is the radioactive material that you want to NOT put in the ocean.

    • by nasch ( 598556 )

      1.3 million tons of water = 1179339200 kilograms
      Energy to boil 1 kg of water = 2257 kilojoules = 626 watt hours
      Energy to boil 1.3 million tons of water = 738,266,339 kilowatt hours
      Cost per kWh in Japan = $0.180 / kWh
      Total cost of energy (so ignoring any overhead cost of installing equipment, personnel, etc): $132,887,941

      That's probably why they're not doing that.

    • by amorsen ( 7485 )

      Seriously? With a four digit ID?

      The problem IS water. Just water with tritium instead of one of its hydrogen atoms. Distilling it solves nothing.

  • As usual, BS (Score:5, Interesting)

    by Cyberax ( 705495 ) on Friday December 30, 2022 @05:21PM (#63168968)

    Then the highly radioactive water is pumped into hundreds of white and blue storage tanks that form a mazelike array around the plant.

    It's not "highly radioactive". It's about 10x more radioactive than the natural radioactivity of water in the ocean outside of Fukushima.

    • I thought with all the hysteria about it it would be much more radioactive. 10x will get diluted to 1x very quickly in the ocean.

      • by Cyberax ( 705495 )
        Yup. It'd be legal to discharge into the ocean without limitations according to the US or Japanese laws if diluted by about 2x. The whole hysteria about this water is stoopid.

        Also, collecting the water in the first place was about just as stupid.
      • Dilution isn't the issue. Mobility is the issue. As discovered in the Irish Sea, heavy isotopes tend to sink, then move around with the tides.

        If TEPCO is right and all heavy isotopes have been cleaned (or will be), then this is a non-issue and they can dump the water safely.

        I'm not thrilled with their accuracy so far, but if the UN's nuclear body says it's been checked and the plan is good, then I'd be inclined to accept that it has been checked as well as it can be.

    • by AmiMoJo ( 196126 )

      It's not just the amount, it's the fact that it bioaccumulates and concentrates. If it gets inside your body, in your organs, it causes cancer. Even if it's much less than the background level, if it sits in your thyroid for decades...

      • It's not just the amount, it's the fact that it bioaccumulates and concentrates.

        What is accumulating? What is the “it” in your statement?

        I’m not disputing anything you said. You may well be right, but vague assertions of this sort sound like nothing more than FUD.

        • by AmiMoJo ( 196126 )

          In this case the biggest issue is Caesium-137. While it doesn't tend to linger in the body for much more than a couple of months, it has a long half life (30 years) so remains dangerous when it enters an ecosystem.

          They are having trouble removing it, and are currently being sued by people who got thyroid cancer. In Japan there is a legal precedent that when the is strong evidence of a statistical link, it's up to the polluter to prove it wasn't their pollution that damaged the plaintiff's health.

      • by Cyberax ( 705495 )

        It's not just the amount, it's the fact that it bioaccumulates and concentrates.

        "It" doesn't. The main remaining radioisotope in the Fukushima water is tritium, and tritium does not bioaccumulate.

  • OK. Let us assume the waste water is 1000 time more radioactive than normal seawater (it isn't AFAIR it is like 10 time so a vast overestimate). Sooooo let us see the next country to japan : 200 km to south korea (but practically distance from Fukushima is 1000km) . Let us use a model without current : assuming a 1/r^3 dilution would be an overestimating dilution, instead let us us 1/r^2 as the ocean depth is not infinite in comparison. The order of magnitude of ocean water depth in the strait is 100 meter.
    • You're assuming all nuclear waste is mobile. I thought the Irish Sea had settled that question. It isn't.

      That doesn't mean the plan is bad, it just means your assumptions are bad.

      • by amorsen ( 7485 )

        The waste in this case is tritiated water. It mixes perfectly with normal water, because it IS water.

  • Does radioactive material evaporate? It seems like the obvious solution when you have a lot of toxic water is to reduce the mass by letting the water turn into a much denser slurry of toxic sludge. I bet you could have less than 1% of the original volume if you just slowly filtered it through some sort of large pool area for evaporation. Then scrub the pool and barrel up the remnants again and stick them in a mountain for a thousand years.

    • by amorsen ( 7485 )

      So you want to make tritiated rain? They have already cleaned off the toxic sludge, what remains is almost pure tritiated water. Which happily evaporates just like any other water, if you let it.

      The ignorance on this topic is astounding, for a technical site.

  • by cascadingstylesheet ( 140919 ) on Saturday December 31, 2022 @09:17AM (#63170174) Journal

    However big you think it is, it's bigger.

Elliptic paraboloids for sale.

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