Tokyo U. nuke expert: Radioactive substances may have “poured” into pipe during explosion — Levels could also be extremely high outside Reactors No. 3 and 4

Published: August 3rd, 2011 at 7:43 am ET


Record radiation at Fukushima N-plant / More than twice previous peak level, The Yomiuri Shimbun, August 3, 2011:

[…] “As well as radiation spilling out when the vents were opened, we can’t rule out that radioactive substances poured into the pipe during the hydrogen explosion” that damaged the reactor on March 12, [Kenzo Miya, a professor emeritus at the University of Tokyo and an expert in nuclear engineering] said.

“Radiation levels also could be high in the exhaust stacks of the Nos. 3 and 4 reactors. This should be closely checked to ensure the safety of workers at the plant,” he said. […]

Published: August 3rd, 2011 at 7:43 am ET


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26 comments to Tokyo U. nuke expert: Radioactive substances may have “poured” into pipe during explosion — Levels could also be extremely high outside Reactors No. 3 and 4

  • Steven Steven

    Things seem to be heating up at the plant and in the news. Remarkable that they just ran past the hot spot to minimise exposure for the last 4 months.

    Anyone else unable to get onto ENENEWS today? My system couldn’t locate the address for several hours.

  • maaa

    Same here. It has been for the last couple of hours. The whole place is damn hot. Look at the tepco cam and you can see mirages.

  • Chances are the ene was down for maintenance. Admins like to do that in the early morning hours so as to minimize visitor withdrawl symptoms and panic. Not an unusual occurance, even here

  • mungo mungo

    i couldnt get on either, no one could… perhaps they let us back on now that the plant is glowing like the end of the world, nice of them to let us witness it at all really

  • Dr. Anne Lee Tomlinson Maziar anne

    The truth about nuclear power Japanese nuclear engineer calls for abolition

    “the world’s reserve of uranium is only a fraction of that of oil, and a small percentage of that of coal. Uranium is actually a very scarce resource….”

    “Now, how much uranium is necessary for nuclear power generation? It requires one ton of uranium to run one nuclear power plant for one year. This gives you an idea of the enormity of the highly radioactive fission byproducts generated as a nuclear power plant operates….”
    “Japan has wasted more than one trillion yen only for the prototype FBR, the Monju. In terms of the present judicial system, one receives a year of imprisonment for a fraud of one hundred million yen. Then, how long a sentence should be meted out for a fraud of one trillion yen? Ten thousand years. I don’t know how many people are responsible for the Monju with the government – the Atomic Energy Commission, the Nuclear Safety Commission, the Ministry of Economy, Trade and Industry, then the Ministry of International Trade and Industry, and so forth. But suppose one hundred people responsible, each should be sentenced to one hundred years in prison. This fraud is enormous, but no one has taken any responsibility for it so far. That’s the reality. It seems to me that the nuclear energy business is extremely abnormal.”

  • Dr. Anne Lee Tomlinson Maziar anne

    Monju nuclear reactor sodium leak accident footage
    Footage of sodium leak at Monju nuclear “breeder” reactor, Japan, in 1995.

    The leak prompted the closure of the plant and the suicide of one of its executives.

    Located in Tsuruga, Fukui Prefecture, construction began in 1986 and the reactor achieved criticality for the first time in April 1994, and was fully operational by May 2010. The accident occured a mere 7 months later.

    As of June 2011 this nuclear energy plant is still not operational in a commercial capacity.

    • Dr. Anne Lee Tomlinson Maziar anne

      Japan Strains to Fix a Reactor Damaged Before Quake

      “The Monju prototype fast-breeder reactor…”
      “But critics warn that the recovery process is fraught with dangers because the plant uses large quantities of liquid sodium, a highly flammable substance, to cool the nuclear fuel….
      “’Let’s say they make this fix, which is very complicated,” Mr. Ban said. “The rest of the reactor remains highly dangerous. And an accident at Monju would have catastrophic consequences beyond what we are seeing at Fukushima….’
      “But the technology comes with risks. Instead of water, which is used in commercial nuclear reactors, the prototype reactor uses 1,600 tons of liquid sodium, a hazardous material that reacts fiercely with water and air, to cool its fuel. The presence of an estimated 1.4 tons of highly toxic plutonium fuel at the reactor makes it more dangerous than light-water reactors, which use mainly uranium fuel, critics charge….
      “Once removed, the device will be checked thoroughly for missing parts or damage, he said. The liquid sodium coolant, heated to almost 400 degrees Fahrenheit, makes it impossible to check fully for any damage the device may have caused to the reactor vessel, however.”

  • odylan

    If this 10 sieverts reading is from a pipe leading to a main exhaust stack as they want us to believe it means that the 10 sieverts is simply coming out of a pipe instead of, or as well as, the steam from an exhaust stack. Either way, it seems to me, it makes little difference, it’s still the same amount of radiation getting into the environment whether it’s coming out of a broken pipe or a chimney. As Magritte aptly put it: This is not a pipe.

  • selfsovereign

    Deutschland throws in the towel.
    Germany quits radiation forcasts despite 10,000 emails. WTF?!!!

    Switzerland picks up the torch and carries on………….

    By the way, gets the news 3 days sooner than we do on ex-skf/enenews. babel translation is best, microsoft is “OK” and google is utter crap (not sure they even know what japanese is)

    Tip o the hat to our admin! Love your work

  • selfsovereign

    5 sieverts

  • Heart of the Rose Heart of the Rose

    i see thanks

  • Heart of the Rose Heart of the Rose

    The tweets are coming in like mad at nnn…i can’t mill through all of them..thanks for the quick sort out.

    • Heart of the Rose Heart of the Rose

      I didn’t mean to imply that all the pipes that AREN’T broken aren’t full of radioactive material.

  • radegan

    “The Rising Sun of Japan actually devolved from ancient prophesy that Japan would one day become like the sun and her rays would rise from the land of Nippon and caress the entire earth. How ironic and yet beautiful that seems to us now.” –NNN

    The previous statement was made up. I just wanted to give the Japanese Web Cleansers something to do on this site. Go on, clean it off.

  • Toadmac

    “Radiation levels also could be high in the exhaust stacks of the Nos. 3 and 4 reactors. This should be closely checked to ensure the safety of workers at the plant,”

    safety of workers at the plant? WTF?? He must be f#$king kidding? It must be pretty safe around the rest of the plant then? Last time I looked there had been a few radiation leaks around the entire plant? It seems all is good bar a couple of hot spots.
    Could someone help me and point out where there seems to be a leak? It was reported by MSM that there was possibly some radiation leaks earlier on before this one?

  • radegan

    EGG COUNT ! Let’s see – they admitted to ‘at least 200 pounds of plutonium’ blowing skyward from the mox reactor. We know for every pound of plutonium, there’s 13 pounds of uranium, and other goodies from the years of reactor use. So, say, three thousand pounds blew out, at a minimum and admitted to by TEPCO (could be lots more if those honorable gentlemen didn’t tell the entire truth). Now, how much corium is in a yummy Easter Egg? I’d said those little cuties might average 8 oz – accounting for the its near range dispersal, as opposed to those bits that flew several thousand yards. If 90% fell in near range, that’ll mean about 5400 fun ‘eggs’ to find on the TEPCO Easter Egg hunt – two down, only 5398 to go!

    • farawayfan farawayfan

      Oh, I don’t know, don’t forget about the powdered and aerosolized plutonium that has certainly spread far beyond the plant borders, that would leave less eggs to find……..

  • CaptD CaptD

    My money is on “The Fuky Effect”, causing much if not all of the periodic radiation releases and it is doing it all by itself (ie. not in a controlled manner)!
    Here is my thinking:
    1. I believe that the Corium is now completely below the RPV and so any reading taken above it, are going to be MUCH lower than expected (which matches the data observatio­ns above).

    2. The Corium molten mass is probably now below the “base mat” or floor of the containmen­t structure and is working its way into the landfill below, which would allow most if not all radioactiv­e gases to disperse to the atmosphere­, instead of being contained in the holed RPV…

    3. The Ocean water will show increase RAD readings due to the leakage being washout out from around and below the reactor due to the HUGE rains…

    4. A Corium/Wat­er steam event is still very much a possibilit­y + if it is happening very slowly then that would explain all the fluctuatin­g increases in RAD reading north of Tokyo!


    Good Luck Japan!