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WEBCAM March 2018
#21
Most of the ground at the plant was covered with concrete just to cut the rads.  Tepco has ground monitors they say indicates safe levels that never vary.  The tepcams are a couple stories above the ground so I think they give a better air reading.  Several likely sources to choose from, and my guess is they all add together.  Sometimes one source might get worse but unless I can see something on the cams or read about some problem it's hard to pinpoint which one.  When they closed up r4 and finished the r4 sfp removal work, the CSFP emissions went down and sparks on cam4 really diminished, cam4 sparks are rare now.  Cleaning the roof of r2 may have helped some.  Tepco says the north end is still much more dangerous than the south end and the camera sparking rates agrees with that assessment.
"The map is not the territory that it is a map of ... the word is not the thing being referred to."
 
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#22
Fantastic picture Code.  It shows much more ionized air rising above the plant compared to what Tepco may be measuring at ground level.  Let's say r1 was a stove top with a pan on it.  Placing a thermometer over the top of the pan would be much hotter than a thermometer sitting by the pan.  Daiichi would be three pans and only number two has a lid on it.  Of course, Tepco would be more concerned with the radiation at ground level affecting work than any radiation plume rising above, contaminating the air that blows out to sea.

\\\

Update to include a link to Organic Slant's video of a spark slideshow.

Rainbows At Night A TEPCO Delight 3-31-2018 | Organic Slant
https://www.youtube.com/watch?v=7NnBHR7E...e=youtu.be



"The map is not the territory that it is a map of ... the word is not the thing being referred to."
 
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