ABC News (Australian Broadcasting Corporation), May 30, 2013 (h/t Anonymous tip): The Japanese government has ordered the operator of the Fukushima nuclear plant to freeze the soil around its crippled reactor buildings to stop groundwater seeping in and becoming contaminated. [...] According to a report compiled by a government panel on Thursday, there are no previous examples of using walls created from frozen soil to isolate groundwater being used for longer than a few years. This means the project at the Fukushima plant poses “an unprecedented challenge in the world”.
Japan Times: The panel’s draft report said the government and Tepco hope to create the frozen-soil walls between April and September 2015. [...] A rough estimate suggests that groundwater seepage into the basements would be reduced from 400 tons [every day] to 100 tons once the frozen-soil walls are built.
Published: May 30th, 2013 at 11:00 pm ET
- Experts: Fukushima ‘ice wall’ could destroy reactor units, turn site into swamp — Risk of fractures, ground movement, building subsidence — Must be frozen for 200 years — Officials: High cliffs just behind plant may become unstable — Gov’t: “Observable heaving” and deformations possible (VIDEO) May 2, 2016
- Anonymous Official: Part of ground to sink beneath Fukushima reactors from ice wall being built — Gov’t: Biggest fear is ground sinkage and buildings being destabilized — Tepco: It will sink up to 16mm, but should be ok — Scientist: “People have lost confidence in Tepco” (AUDIO) May 27, 2014
- Top Nuclear Official: “Ground sinking” beneath Fukushima reactor buildings a concern — Gov’t experts looking closely at risks from changes to flow of underground water April 21, 2014
- Japan Times: Walls are cracked below ground at Fukushima reactor buildings — “As if the damage above ground isn’t enough to worry about” March 8, 2013
- Fukushima Worker: I’m worried about pressure forcing water up through cracked ground at nuclear plant — Level now rising on mountain side August 18, 2013