Fukushima one year on

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Witness
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Re: Fukushima one year on

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Fukushima nuclear debris removal delayed by virus

The removal of nuclear debris from Japan's crippled Fukushima power plant will be delayed by about a year, because the pandemic has set back development of specialised equipment, the plant's operator said Thursday.

The Tokyo Electric Power Co (TEPCO) had been scheduled to start removing melted fuel from deep inside one of the mangled reactors next year, a decade after the nation's worst ever nuclear crisis was triggered by a tsunami.

The process is considered the most difficult of the massive decommissioning programme, which is expected to take three to four decades to complete.

TEPCO had planned to develop a robot arm in Britain that would have arrived in Japan next year to start work -- but chief decommissioning officer Akira Ono told a news conference that a recent spike in Covid-19 infections in the UK had delayed this.

"It will now be difficult to transfer the system in January as scheduled," Ono said, adding he hoped the delay would be limited to a year.

The removal process is expected to take several years for the number two unit, which is estimated to contain some 237 tonnes of debris, Kyodo News said.

Altogether, three melted-down units are estimated to house around 880 tonnes of debris.
https://www.france24.com/en/live-news/2 ... d-by-virus
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sparks
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Re: Fukushima one year on

Post by sparks »

At least they have a choice:. Death from the 'rona bug or radiation.

In light of the virus, Fukutooshima looks like a cake walk.
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Re: Fukushima one year on

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Witness wrote: Sun Oct 25, 2020 11:30 pm
Japan puts off decision to release treated Fukushima water into sea

Image
Storage tanks for radioactive water are lined up at the tsunami-crippled Fukushima No. 1 nuclear power plant in Fukushima Prefecture in February.
Japan has put off a decision to release treated radioactive water from the crippled Fukushima nuclear plant into the sea, government sources have said, after reports of a formal decision later this month triggered strong opposition from fishermen.
https://www.japantimes.co.jp/news/2020/ ... ima-water/
Dumping the tritium into the ocean isn't a worst case scenario, and obviously it will happen. Probably in some disastrous fashion, as it is the most common form of nuclear pollution. Rather than a trickle, allowing the carcinogenic radioactive water molecules to disperse and mix, there will be some huge dump and massive failure of the ever increasing storage tanks.

None of that is even a speed bump on the real disaster, which will not be cleaned up, not in your lifetime, and not in your grandchildren's lifetime. The windscale disaster, over 63 years ago, was a minor disaster compared to Fukushima. Just one small reactor, which sits in the midst of an advanced undamaged facility, with the entire resources of England to deal with the relatively small amount of melted or damaged fuel, still in the reactor, contained. Sealed up, not leaking into the ground water and ocean all the time. (like Fukushima is doing)

63 years it has been sitting there, and the "plan" to "clean it up" is theorized to take another 100 years. No, that is not a joke. Since 1984 they have been trying to remove the filter galleries, which prevented most of the radioactive material from blanketing north easter England, and of course Europe.

After that they will demolish the entire 125 metre tall ventilation chimney, a highly radioactive problem, which might take a while. It took 4 years to remove the first block of radioactive concrete, but in the following year they removed 9 metres, each metre creates 100 tons of radioactive concrete and steel to deal with, which means bagging it up and laying it nearby, where it must be protected, watched, guarded and kept safe for the next 140,000 years. Give or take a 50,000 years.

Plans on what to do with the melted fuel inside the reactor do not exist. Just as none exist for what to do about Fukushima. The Windscale reactor has an estimated 15 tonnes of fuel sealed inside of it. And sometime in the next 100 years they plan on doing something about it.

Fukushima has maybe 400 tons of melted fuel, not inside a reactor, and an estimated 10,000/30,000 tons of spent fuel rods next to the ruined reactors. These sort of facts are unpleasant for the nuclear cheerleaders, who live in a fantasy world where nuclear is both cheap and safe. It is not cheap, and it has never been safe.
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Re: Fukushima one year on

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Newly found Fukushima plant contamination may delay cleanup

A draft investigation report into the 2011 Fukushima nuclear meltdown, adopted by Japanese nuclear regulators Wednesday, says it has detected dangerously high levels of radioactive contamination at two of the three reactors, adding to concerns about decommissioning challenges.

The interim report said data collected by investigators showed that the sealing plugs sitting atop the No. 2 and 3 reactor containment vessels were as fatally contaminated as nuclear fuel debris that had melted and fell to the bottom of the reactors following the March 2011 tsunami and earthquake.

The experts said the bottom of the sealed plug, a triple-layered concrete disc-shaped lid 12 meters in diameter sitting atop the primary containment vessel, is coated with high levels of radioactive Cesium 137.

The No. 1 reactor lid was less contaminated, presumably because the plug was slightly knocked out of place and disfigured due to the impact of the hydrogen explosion, the report said.

The experts measured radiation levels at multiple locations inside the three reactor buildings, and examined how radioactive materials moved and safety equipment functioned during the accident. They also said venting attempt at Unit 2 to prevent reactor damage never worked, and that safety measures and equipment designs still need to be examined.

The lid contamination does not affect the environment as the containment vessels are enclosed inside the reactor buildings. The report did not give further details about if or how the lid contamination would affect the decommissioning progress.
http://www.asahi.com/ajw/articles/14140809
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Re: Fukushima one year on

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On the positive side, we now know three completely different ways the Mark 3 reactor design is complete shit at working as designed

In essence, the design of the reactor and containment structure can fail in3 different ways

The downside is nothing can be done about the other existing Mark 3 reactors

Except to shut them down and start working on a plan to someday make the spent fuel safe

No failed reactor building, and all but one failed reactor, has ever been made safe


And none will in your lifetime
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Re: Fukushima one year on

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On another positive note, any country with reactors, especially the ones with 40 years of spent fuel stored next to them, has multiple doomsday devices sitting there

You don’t dare bomb them, and in fact you don’t even want to damage the infrastructure of the country

Because doing anything to damage a reactor means the end of civilization as we know it
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Re: Fukushima one year on

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Quake shifts 53 water tanks at Fukushima plant

The operator of the crippled Fukushima Daiichi nuclear power plant says it has found that 53 tanks storing radioactive wastewater were shifted from their original locations by a powerful earthquake earlier this month. But it says there have been no leaks from the tanks.

Tokyo Electric Power Company inspected 1,074 tanks after a magnitude-7.3 quake struck off the coast of Fukushima Prefecture on February 13.

TEPCO discovered that 53 tanks had moved from their original locations by 3 to 19 centimeters.

TEPCO treats the water used to cool molten nuclear fuel at the damaged reactors before storing it in tanks. But the water still contains radioactive substances.

The company says it also found that five sections of piping connecting the tanks shifted more than the limit recommended by the manufacturer.

But it says it has so far found no cracks or other abnormalities in the piping. It plans to conduct further examinations.

TEPCO also laid out a plan to repair two seismometers at the No.3 reactor building next month.

It came to light on Monday that the devices went out of order partly because of heavy rain last July. As a result, they were unable to collect data when the quake struck.
https://www3.nhk.or.jp/nhkworld/en/news/20210226_03/

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Re: Fukushima one year on

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Today is the 10 year anniversary of the earthquake and tsunami.
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Re: Fukushima one year on

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If you have radioactive water (defined however you like) and you put it in a big cake pan and put it in the sun and evaporate it, what happens? Do you get some sort of radioactive dust in the pan? Is evaporated nuclear water fit to drink?
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Re: Fukushima one year on

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The tritium (radioactive water) just turns onto radioactive water vapor. Not a good idea. There is also the larger issue of the other isotopes in the water. It's all a goddamn nightmare.
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Re: Fukushima one year on

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robinson wrote: Thu Mar 11, 2021 1:19 am The tritium (radioactive water) just turns onto radioactive water vapor. Not a good idea. There is also the larger issue of the other isotopes in the water. It's all a goddamn nightmare.
WHT is tritium? ok, an isotope of hydrogen. And it combines with oxygen?

And it is radioactive. Is it hot? Like is it room temperature or what?
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Re: Fukushima one year on

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Like most things that will give you cancer, or your kids cancer, or worse, Tritium is hotly contested, with the producers of it insisting it’s safe and the concerned scientists still trying to get the dangers recognized (after 60 years)
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Re: Fukushima one year on

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It’s not hot as in warm, but because it emits beta radiation and binds with every last thing in your body, as well as easily migrates everywhere, it’s very much a cancer causing isotope

(This fact will be hotly contested by idiots who have drunk the nuclear Kool aid, which is made with tritium lol)

https://www.ianfairlie.org/news/the-hazards-of-tritium/
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Re: Fukushima one year on

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it stays radioactive? sounds dodgy
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Re: Fukushima one year on

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Half life of 12 years
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Re: Fukushima one year on

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There are good reasons not to dump tons of it into your fishing waters
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Re: Fukushima one year on

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Fukushima landscape.

Image

https://www.nytimes.com/2021/03/10/worl ... rsary.html (lots of pics)
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Re: Fukushima one year on

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Doesn't make sense
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Re: Fukushima one year on

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Contents of 4,000 containers with radioactive waste at Fukushima plant unclear: TEPCO

FUKUSHIMA -- Of the 85,000 containers holding radioactive waste placed in the radiation-controlled area of the Fukushima Daiichi nuclear power plant, the contents of about 4,000 have not been identified, operator Tokyo Electric Power Company Holdings Inc. (TEPCO) announced on April 5.

According to TEPCO, it began listing the contents of the containers after the meltdown in 2011, but about 4,000 of them remain unidentified. The company says it will formulate a survey plan and proceed to determine what they hold.

Last month, TEPCO confirmed that the contents of a container in the waste storage area at the nuclear plant were leaking due to corrosion at the bottom of it. When the Fukushima Prefectural Government inspected the site, it also found four containers that TEPCO did not know about. The maximum radiation level on the surface of the containers was 1.5 millisieverts per hour.
https://mainichi.jp/english/articles/20 ... na/002000c
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Re: Fukushima one year on

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Even with water release, nuclear plant needs more storage tanks

The plan to release treated radioactive water from the crippled Fukushima No. 1 nuclear plant into the sea will likely not resolve the chronic problem of contaminated water accumulating there, Asahi Shimbun calculations show.

The maximum rate of water discharge allowed under the government’s basic plan would be less than the inflow of rainwater and groundwater at the nuclear power plant, meaning that additional water storage tanks would inevitably be needed at the site.

The government on April 13 approved the basic plan to release more than 1 million tons of treated water into the sea. The government and plant operator Tokyo Electric Power Co. hope to start discharging the water two years from now. Existing storage tanks at the site are expected to reach full capacity around the same time.

The Asahi Shimbun studied this plan based on documents and materials published by the government and TEPCO.

The plan addressed the fact that the ALPS multi-nuclide treatment system cannot remove radioactive tritium from the water. Under the plan, the amount of tritium released with the water should not exceed 22 trillion becquerels a year.

That is the same upper limit for the amount of tritium-containing water that used to be discharged from the Fukushima No. 1 nuclear plant before the triple meltdown in March 2011.

TEPCO figures show the water held in the storage tanks at the plant had a mean tritium concentration of 730,000 becquerels per liter as of March last year. That translates into 22 trillion becquerels of tritium in about 30,000 tons of treated water.

At the same time, rainwater and groundwater entering the reactor buildings of the nuclear plant generated an average of 140 tons of contaminated water a day, or 51,000 tons throughout the year.

If conditions remain the same, the quantity of the water held in the storage tanks would grow about 20,000 tons a year, although this estimate could change according to the amount of precipitation.
http://www.asahi.com/ajw/articles/14332645
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Re: Fukushima one year on

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Tritium (radioactive hydrogen) has always been the big cancer causing problem from anything nuclear

The solution from the start has been to ignore this, or pretend it isn’t actually that bad
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Re: Fukushima one year on

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When open air testing was ended it was mostly due to the amount of radioactive material showing up in babies teeth


Nothing was even reported on the cancers caused by tritium
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Re: Fukushima one year on

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Not Fukushima, but a reminder that nuclear never sleeps:
Nuclear Reactions Have Started Again In The Chernobyl Reactor

Scientists monitoring the Chernobyl nuclear power plant say that nuclear fission reactions are occurring again in the reactor hall’s remains, some 35 years after the core exploded.

Sensors monitoring the masses of uranium fuel buried in the basement rooms of the reactor have detected rising levels of neutrons, signalling that the fission process used to create nuclear energy is occurring in one of the inaccessible rooms within the plant.

Although the levels are rising slowly, scientists are working to figure out the cause of the activity, and what action needs to be taken to prevent the risk of further radiation leaking out from the plant.

Maxim Saveliev, a researcher at the Institute for Safety Problems of Nuclear Power Plants in Kiev, Ukraine, said that there were ‘many uncertainties’ about the situation inside the remains of the reactor unit, adding that ‘we can’t rule out the possibility of [an] accident.’

It’s believed that around 95% of the original fuel from the reactor flowed into the plant’s basement rooms following the disaster in April 1986, forming solid ‘fuel-containing materials’ (FCMs.) A year after the explosion, a concrete-and-steel ‘sarcophagus’ was placed over the top of the reactor’s remains to contain radiation from the FCMs, with a larger, more secure ‘New Safe Confinement’ installed in 2016 at a cost of more than €1.5 billion.

Since then, neutron counts have stabilised in most parts of the plant, but Science Magazine reports that in the room concerned levels have almost doubled in four years.
https://www.unilad.co.uk/news/nuclear-r ... l-reactor/
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Re: Fukushima one year on

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I know it won’t matter, not even a tiny bit, to the believers. Because facts, logic and rational scientific thought doesn’t matter to belief. But I will type it out again, knowing it won’t matter.


The facts are there, they are real, they matter. No meltdown has ever been cleaned up. The partial meltdown at 3 mile island did have the nuclear fuel removed, because it was a small meltdown and didn’t breach the reactor, but the building hasn’t been cleaned up, nor is it safe.


All the other disasters are still there, and they will be there long after everyone reading this is long dead. It’s a problem that isn’t going away, and can’t be fixed.


After 65 years a tiny little reactor disaster, in a building that’s not destroyed, is still there. They don’t dare open it, much less have a plan to do anything about it, which is exactly the same with all the other meltdowns.

Just one ruined reactor with fuel no longer contained is a never ending disaster. Japan has three. Somehow believers think it’s not that bad. But in reality, it’s worse than you can imagine.
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Re: Fukushima one year on

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Now plans are being made, but they all involve waiting. A very long time. No machines are being designed, much less built, to actually do anything.

The melted unconfined fuel at three mile island is in the concrete itself, and it’s far too dangerous to try and move it. This is a tiny amount compared to the big disasters.

The huge amounts of spent fuel worldwide is another magnitude of danger greater. The believer doesn’t care, and will actually applaud and cheer China for building more reactors, and creating more dangerous fuel waste.


Because a nuclear believer is actually insane.
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Re: Fukushima one year on

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robinson wrote: Wed Apr 10, 2019 7:41 am Nobody, not the Japanese, or the Americans, nor the Chinese will ever solve the problem. Not on your lifetime, and not in your grandkids lifetimes.
Discussing the clean up at the Hanford site (which is a fucking serious shit problem), with somebody who worked on it for the last twenty years. She laughed and agreed there is definitely job security in regards to any nuclear disaster site. That job will be going on for at least the next 10,000 years.

And it is nothing compared to Fukushima, Chernobyl or Three mile Island
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