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It went as high as 142 degrees Celsius on January 14 before it came down to 138 degrees Celsius on January 15 at "CRD Housing Upper Part" of the Reactor Pressure Vessel of Reactor 2 at Fukushima I Nuclear Power Plant.
Looking at the numbers, erratic movement started on January 12 when the temperature at the location jumped from 48.4 degrees Celsius at 5PM to 102.3 degrees Celsius at 11PM. TEPCO says it's just malfunctioning, but the temperature had been stable up to that point.
From TEPCO's latest (1/16/2012) plant parameters, "temperature of Reactor 2":
Tokyo Time
日経新聞： 日銀総裁人事「大胆な金融緩和を」 首相と有識者一致
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という記事のヘッドラインを見ただけで苦笑してしまいました。自分と同じ意見の学者ばかり集めれば、そりゃ意見が一致することでしょう。
日経新聞の記事にはこの「有識者」の方々の名前と現在の所属が出ていましたので、写しておきます。カッコ内は、ウィキペディアなどでざっと検索した、以前の所属です。実社会で苦労をなさった方...
4 months ago
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8 comments:
This is what I call the Fuky Effect...
I believe it is caused by the interaction of the ground water, the remaining containment debris and the corium(s)...
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It is quite possible that the radioactive steam “event” that many have been warning about, has indeed started to happen and it is now just slowing “venting” radioactivity into the atmosphere over Japan!
The wind charts for the last few days will tell the tale as will the future… http://www.zerohedge.com/article/interactive-japan-wind-map
So it is above 100C. This is means there is steam coming out of there if they are still applying water. This is NOT cold shutdown.
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This temperature spikes are measured at the control rod drive housing upper part.
If there was a melt-through, the instrument has displayed the infrared heat of the corium flowing nearby.
And, supposed there was a melt-through, one could assume that there some thermically hot blobs of material have fallen through the hole in the vessel, landed nearby and heating the instrument until they get flowed away by the cooling water.
If this is the case, then we can conduce safely that the material is still way above 100 C.
(There is probably much hotter material that is normally not reached by the cooling water, see the hot steam measured in the suppression chamber gas around late November.)
For what it's worth, the most recent temperature reading at this gauge was -6.3C (as of 1/17 11:00 am). http://www.tepco.co.jp/en/nu/fukushima-np/f1/images/12011712_temp_data_2u-e.pdf
Thanks for the update. Now it looks kaput.
Maybe the results of the peephole inspection will reveal that corium flowed out of the RPV near this thermoelement.
If so, this this could suggest a plausible explanation for the extreme readings and its early failure (probably because of losing its hermetic tightness due to thermal and chemical stress, and thus moisture practically shorting the instrument).
I really look forward to the videos from the inside of unit 2.
New technology has been implementing for manufacturing of devices like Temperature Recorders which measure heat.
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