Recent content by turi

Mainichi reports that reactor fuel removal work should start at unit 2 as it seems to be the easiest target: https://mainichi.jp/english/articles/20190809/p2a/00m/0na/005000c Demolition work on the exhaust stack between units 1 and 2 has started...

SFP3 progress page: https://www7.tepco.co.jp/responsibility/decommissioning/action/spent_fuel/unit3-e.html

A new video by Tepco; the year in review: https://www4.tepco.co.jp/en/news/library/archive-e.html?video_uuid=xh57k85s&catid=61795

Mainichi reports that TEPCO is set to extract a debris sample from unit 2: http://mainichi.jp/english/articles/20180316/p2a/00m/0na/018000c For your search optimization: The Fukushima units are often written like "２号" for example for unit 2 in Japanese. Depending on the site I've been on or the...

Unit 1 sample results are in: http://www.tepco.co.jp/nu/fukushima-np/handouts/2017/images2/handouts_171030_07-j.pdf Didn't have time to have a closer look at them yet.

Me neither. Not even in the separately linked files for water injection change days for unit 1 (e.g. http://www.tepco.co.jp/en/nu/fukushima-np/f1/pla/2017/images/20170125_pcvtemp1u-e.pdf). I don't see any special pattern.

The thermometers currently used are: http://www.tepco.co.jp/en/nu/fukushima-np/f1/pla/2017/images/figure-e.pdf referenced here http://www.tepco.co.jp/en/nu/fukushima-np/f1/pla/index-e.html Historical values (twice a day) can be found here...

There's a whole bunch of new press releases from Tepco. I won't find time to read them in detail at the moment. Interesting documents: http://www.tepco.co.jp/nu/fukushima-np/handouts/2017/images2/handouts_170830_02-j.pdfAbout water in the reactor buildings...

This morning Tepco had the last valve for the frozen wall opened. Let's see whether closing those last 7 m (of 860 m) makes a difference. http://www.tepco.co.jp/nu/fukushima-np/handouts/2017/images2/handouts_170822_02-j.pdf

Tepco will run a "temperature stabilization test" in the SFP of unit 2. The expectation is that for all three SFPs natural cooling is now sufficient even with high summer temperatures. This has already been shown for the SFP of unit 1...

Groundwater influx into the reactor and turbine buildings has been significantly reduced: http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_170807_01-e.pdf

Flow rates are published at least daily: http://www.tepco.co.jp/nu/fukushima-np/handouts/2017/images2/handouts_170809_07-j.pdf Water is injected via core spray and the regular cooling pathway (forgot its name). But I'm not sure if it's really possible to calculate much with the data available.

I couldn't find temperature data on the injected vs. the returned water. But http://www.tepco.co.jp/nu/fukushima-np/f1/pla/index-j.html has a lot of current temperature measurements for RPVs and PCVs.

Irid reports on full scale tests of leakage stopping technology. Due to the additional weight when filling whole parts of the suppression chamber the support columns would have to be reinforced as well...

The first of 8 dome parts has been installed on unit 3 as part of the preparations for the fuel removal from the spent fuel pool.