Remember how Japan decided tobuild that crazy ice wallto contain theFukushima nuclear works ’s radioactive weewee leak ? Well , its grammatical construction is behind schedule — because its engineer ca n’t reach temperatures humbled enough to freeze down the ice .
https://gizmodo.com/japan-to-start-building-giant-ice-wall-at-fukushima-1581622188
The ice wall was to be constructed by driving vertical tube , space about a cadence apart , between 20 and 40 metre into the ground . Then , coolant was to be pumped through them , effectively creating a barrier of permafrost around the affected building , keeping the contaminated pee in and groundwater out .
But now , the Tokyo Electric Power Co. ( TEPCO ) has admitted that an initial , small inner icing wall — a proof - of - concept , if you like — is proving difficult to reconstruct . ATEPCO voice has explained that :
“ We have yet to take shape the ice stopper because we ca n’t make the temperature low enough to stop dead water . We are behind schedule but have already aim additional measures , admit put in more pipework , so that we can remove contaminate water supply from the trench starting next calendar month . ”
The engineers involved with the task are using a atomic number 20 chloride coolant , chill down to -30C , or -22F. While that ’s been enough to make smaller rendering of these permafrost walls elsewhere in the past , the same is n’t true at Fukushima . Indeed , the undertaking had already been greet with scepticism by some technologist and scientist who — perhaps now correctly — manoeuvre out that the labor may struggle to work at such scale and clock time duet .
The Brobdingnagian amounts of water leak from the Fukushima site continue to be a real and growing trouble , then . permit ’s hope the engine driver can line up something more good than their calcium chloride coolant . [ Agence France - Presse via Guardian ]
prototype by AP
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