MHI starts on Fukushima sludge treatment facility

16 November 2011


Mitsubishi Heavy Industries has begun to install equipment for a radioactive waste storage facility at the Fukushima Daiichi site. The facility will temporarily store sludge that has been generated in the processing of contaminated water.

MHI says the facility will include sludge storage tanks, a system to process off-gas from the tanks, a ventilation and air-conditioning system, a control system and utility facilities.

The cylindrical sludge storage tanks (diameter 3.2 m; length 13.5m) will be made from 25 mm thick iron plates. Eight tanks each with a storage capacity of up to 90 cubic metres will be installed in a room with 1 metre thick concrete walls.

The tanks will also function to agitate waste sludge and scavenge hydrogen, MHI said.

MHI is one of a number of companies that has been supporting recovery efforts at the Fukushima Daiichi nuclear power station. MHI has been involved in the conversion of a ‘Mega-Float’ for storage of contaminated water as well as the supply of forklift trucks with radiation-shielded cabins to handle rubble at the accident site.

Regular updates may be found on the website of our sister journal, Nuclear Engineering International, reachable on <www.neimagazine.com> or by clicking on the link in the navigation bar to the left of this page.

The following sites are also posting continuing updates:

<http://www.tepco.co.jp/en/index-e.html>

<http://www.iaea.org/>

<http://www.jaif.or.jp/english/>

<http://bravenewclimate.com/2011/03/15/tepco-reactor-status/>

<http://www.world-nuclear-news.org/>

<http://www.kantei.go.jp/foreign/index-e.html>




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