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mheslep
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I wonder what qualifies as very radioactive in the context of units 1 or 2 and Tesco analysis.Sotan said:still very radioactive
I wonder what qualifies as very radioactive in the context of units 1 or 2 and Tesco analysis.Sotan said:still very radioactive
Thank you. But is this really about Unit 2? My almost inexistent Japanese only decripts references to Unit 1.Sotan said:http://www.tepco.co.jp/nu/fukushima-np/handouts/2016/images2/handouts_161007_04-j.pdf
(in Japanese)
One page report about Tepco finishing the removal of the top panels of the walls of the cover of Unit 2 building.
[...]
Sotan said:http://www.tepco.co.jp/nu/fukushima-np/handouts/2016/images2/handouts_160909_04-j.pdf
(in Japanese)
They measured the water level in the drain sump pit at the foot of the smoke stack of Units 1/2.
Water level is at ~60 cm.
As mentioned before, the internal dimensions of the sump pit are about 1m x 1m x 1m.
Way higher than it was for the water in the turbine building basements right after the accident.SteveElbows said:The following english pdf has radiation measurements of the water. Since years have gone by since I learned something about how to interpret the scale of such readings, and I've gone really rusty on this front in the meantime, would anybody be so kind as to say something about these numbers and their implication? Many thanks.
Rive said:The report linked above states, there was ~ equal amount of Cs-134 and 137 around in the water at the time of the accident.
68 months: 2.8 times the half time of CS-134 passed, so ~ 1/7 part of the original amount remained.
That ~ fits with the numbers I think.
I hope I did the math correctly...
Thank you, Sotan, for an informative update. No US news service realized that it was Daini that was involved, so this is material new information for us here.Sotan said:From what I just heard from FNN (Japanese TV station), the cooling stopped at Unit 3 SFP in Fukushima Daini plant (not in the damaged Daiichi).
A safety device signalled that the water level is too low, therefore the cooling system stopped. But they presume it was only the sloshing caused by the earthquake. The temperature of the water rose by about 0.8 degrees Celsius (to a maximum of almost 30 degrees) before cooling resumed, so no danger there.
A tsunami of about 1m height has reached the shores in the area of the Fukushima nuclear plants, but didn't cause any additional issues.
Edit: more detailed report here:
http://kyodonews.net/news/2016/11/22/89417
Thanks for this document.Sotan said:...