Fukushima Daiichi July 11, 2017 4:57 AM
Weather has been very foggy. Fog is clearing with dawn. The common spent fuel pool building seems to be steaming mightily:
Here are more screenshots: https://www.dropbox.com/s/quow4jfqk1naldz/July 7-11 2017.docx?dl=1
I've seen the common spent fuel pool steam up before. I'm sure its packed with very hot fuel, some of which is undoubtedly damaged. TEPCO reportedly stored much of the fuel offloaded from unit 4 in the common spent fuel pool, as indicated in this press release:
TEPCO Press Releases (November 18, 2013). Fuel Removal from Unit 4 Spent Fuel Pool has Started at Fukushima Daiichi NPS, available, http://www.tepco.co.jp/en/press/corp-com/release/2013/1232272_5130.html
According to a November 2010 report by Tepco titled, ‘Integrity Inspection of Dry Storage Casks and Spent Fuel at Fukushima Daiichi Nuclear Power Station,’ as of March 2010 the common spent fuel pool contained 6291 fuel assemblies. The amount of MOX fuel stored at the plant has not been reported.
It is worth noting that although this report was produced on 10/26/2010, the file properties indicate the document was modified on 3/13/2011:
Integrity Inspection of Dry Storage Casks and Spent Fuels at Fukushima Daiichi Nuclear Power Station (16 November 2010), http://www.nirs.org/reactorwatch/accidents/6-1_powerpoint.pdfThe common spent fuel pool is probably very full of very hot fuel. How stable is that building after the earthquakes and site liquefaction?
Here is another steamy day for the common spent fuel pool building:
May 11 2017, 4:12