NHK: Highest temperature since claim of ‘cold shutdown’ — Asahi: Could force gov’t to revoke declaration

Published: February 12th, 2012 at 7:35 am ET
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Title: TEPCO: No. 2 reactor’s temperature hits 82 degrees
Source: AJW by The Asahi Shimbun
Date: Feb 12, 2012

The temperature in a reactor at the crippled Fukushima No. 1 nuclear plant may have risen to 82 degrees on Feb. 12, a situation that could force the government to revoke the declaration of “an equivalent of cold shutdown.” 

If the temperature is confirmed to exceed 80 degrees, it will not meet the condition for the government’s definition of the state of a cold shutdown, which is below 100 degrees, due to the margin of error. The margin of error associated with the temperature is up to 20 degrees as it cannot be verified if the reading is accurate [...]

TEPCO said on Feb. 12 that it increased the injection of cooling water the day before following the rise in temperature. [...]

Read the report here

Title: Temperature rising at No.2 reactor
Source: NHK
Date: Feb 12, 2012

[...] The temperature continued to climb on Sunday morning to hit its highest level since last December, when the government and TEPCO declared all the reactors were at a state of cold shutdown, with their temperatures below 100 degrees. [...] 

Read the report here

Title: Fukushima No. 2 reactor temperature up to 82C, but not critical: TEPCO – The Mainichi Daily News
Source: Kyodo
Date: February 12, 2012

[...] TEPCO reported the latest development immediately to the Nuclear and Industrial Safety Agency of the Economy, Trade and Industry Ministry as the temperature exceeded the limit of 80 C designated by the company’s safety regulation for maintaining a cold shutdown, it said.

It is considered desirable to keep the temperature below 80 C, while the bottom of a reactor pressure vessel must be kept below 100 C in a stable cold shutdown, in view of the margin of error of thermometers, according to TEPCO officials. [...]

Read the report here

Published: February 12th, 2012 at 7:35 am ET
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Related Posts

  1. Bloomberg: Reactor No. 2 temperature breaches safety limit — Now almost double Feb. 1 level — Validity of safety declaration questioned — Nearly 200°F February 13, 2012
  2. NHK: Tepco “believes” Reactor No. 2 is in a state of cold shutdown (VIDEO) February 11, 2012
  3. Asahi: Tepco checking if “chain of nuclear fission has occurred again in melted fuel” at Reactor No. 2 after temperature rises sharply February 6, 2012
  4. Mainichi: Malfunction casts doubt on ‘cold shutdown’ and condition of reactor cores — Japan Nuclear Expert: Will be much more serious if last two sensors fail; Unable to install new ones February 14, 2012
  5. Asahi: Reactor No. 2 temperature stays high despite Tepco’s stabilization effort — Was back up to 72°C February 8, 2012

20 comments to NHK: Highest temperature since claim of ‘cold shutdown’ — Asahi: Could force gov’t to revoke declaration

  • rooks rooks

    I doubt it – too much at stake. The argument is about a temp instead of where the fuel is and what it is doing. Sad state IMO.


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  • ENENews

    Looks like you’re right. Just added this from Kyodo… “desirable”:

    Title: Fukushima No. 2 reactor temperature up to 82C, but not critical: TEPCO – The Mainichi Daily News
    Source: Kyodo
    Date: February 12, 2012

    [...] TEPCO reported the latest development immediately to the Nuclear and Industrial Safety Agency of the Economy, Trade and Industry Ministry as the temperature exceeded the limit of 80 C designated by the company’s safety regulation for maintaining a cold shutdown, it said.

    It is considered desirable to keep the temperature below 80 C, while the bottom of a reactor pressure vessel must be kept below 100 C in a stable cold shutdown, in view of the margin of error of thermometers, according to TEPCO officials. [...]

    Read the report here


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    • BreadAndButter BreadAndButter

      Pathetic.
      It’s “desireable” to watch last year’s flipbook backwards, re-assemble those reactors and send the earthquake back to where it came from.
      Won’t happen either.


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    • For those who wish to enjoy long life, it is considered desirable to avoid direct shotgun blasts to the brain. Also, it may be preferable to some people to eat i e cream instead of rat poison. Also, at times one might find a million dollars more desirable than being boiled in oil. But maybe not… maybe meltdown or painful death is not a big deal…


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  • moonshellblue moonshellblue

    My concern is the additional water being used and adding more waste into the ground water and ocean and for what, to keep a thermometer below a certain temperature? They have added boric acid and claim there is no re-criticality, which for me is questionable, but having said that why is this so important, excuse my ignorance.


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    • aigeezer aigeezer

      Hi moonshellblue. It’s important to bureaucrats and politicians because of the arbitrary rule they invented – if the temperature reaches 80C then they will have to revoke their “cold shutdown conditions” announcement (unless they change their minds or find a loophole).

      It has nothing whatsoever to do with physics, the actual state of the plant, and similar “hard” issues.

      However, bureaucratic and political realities may have a lot to do with whether they decide to push people further into harm’s way or evacuate them instead. Political considerations will probably also affect msm media spin. Generally, msm announced “cold shutdown” and changed the subject – if “cold shutdown” is officially decreed to be over, even msm may have to talk about it.

      Huge stakes politically. Completely irrelevant “at the plant”.


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  • dodge

    It does appear that the efforts they make to cool these reactors are the major part of the radiation problem, and the danger to ocean and ground water. It could be that even after almost a year of reading enenews I still really can’t wrap my mind around the extent of the danger. As an old fire fighter in a small community, I remember the days of rushing to a fire, not to put it out, but to keep the neighbor’s from burning down. There just doesn’t seem to be a way to just let these burn out — they seem to have to try to do something, even if it is wrong. What a foolish tragedy that the world community decided to hid this danger, to allow TEPCO and Japan to go it alone, and to hide the realities from the world population. It is certain that the truth will come out, people will wake up, and what a rude awakening it is likely to be.


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    • The size of this disaster is beyond anything ANYONE has ever seen, but they keep downplaying it, making it seem small, minor, and cold dead out.

      What a surprise it may turn out to be if this fire breathing dragon lady wakes up from her slumbers… in one of several ways..

      #2 does something unexpected, like get a high fever

      #4 SFP falls over in one of the too many to count earthquakes

      #3 or what is left of one of the 65 ton melted coriums reaches groundwater and blows up

      I will give odds that even if something like that happens, they may turn off the cameras and just go home, pretend nothing happened at all, just to keep up appearances of 'cold shutdown' and save face, plus the nuclear industry.


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  • BreadAndButter BreadAndButter

    Re: MSM silence. Imagine unit 2 exploding for some silly reason Tepco forgot to consider.
    Sadly, I somehow doubt even this would cause media attention span exceeding 48 hours.


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  • many moons

    If number 2 explodes and there is no film footage sent out, will any of us know about it? If the media is told not to report it…the cameras are down…who knows what really goes on at Fukushima. I’m certain of one thing….TEPCO lies about…everything!


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  • patb2009

    watch the Japanese Government redifine “Cold SHutdown” to 212 C.


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  • StPaulScout StPaulScout

    Q: Why has the temperature started to vary widely since noon?
    A: We don’t quite know.

    Their answer is a lie. Anyone that has been reading about this should recognize the temperature swings as a sure sign that the core is ‘breathing’.


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  • moonshellblue moonshellblue

    Agree I think the corium is slowing being redistributed by the weight of water. Does anyone know how much the entire facility has sunk. I remember Arnie stating it was 3 feet but that was a few months ago. It’s almost like the entire area is imploding. JMHO


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  • Ok, that is IT.. I have had it with this #2 acting all uppity and gettin a fever, without even asking permission or anything.

    As punishment, the gvmnt is ordering a halt to all ice cream sales in Fukushima Province and no more virgin snow breaks for workers either.

    As soon as #2 starts behaving, everyone can have all of the ice cream they want.

    Pass the word… ssshhhhh, keep it secret…


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  • Mack Mack

    Article on the NRC official whose "team helped Japan develop the road map that resulted in the plant being declared officially under control in December."

    http://blogs.wsj.com/japanrealtime/2012/02/22/u-s-nuke-official-this-is-too-big-for-tepco/


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