Phase 3 freezing of Landside Impermeable Wall starts at Fukushima Daiichi Nuclear Power Station
The remaining unfrozen area (west side No.3) refrigeration valve opening on the soil freezing pipes has been started 9:00 today (August, 22). Today, the situation has proceeded to Phase 3 towards the completion of Landside Impermeable Wall. Number of freezing pipes and refrigeration valves are 11, and the length of unfrozen area is approximately 7m.
http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2017/images/handouts_170822_01-e.pdf