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Safety anxiety as Tepco plans to remove canopy from Fujushima No 1 nuclear reactor

Chairman Allison Macfarlane and other NRC officials stand in the darkened interior of Reactor 4 at the Fukushima Dai-ichi nuclear complex northeast of Tokyo Dec. 13, 2012. Photo courtesy of TEPCOPlan to remove cover over damaged Fukushima reactor draws concern, Asahi Shimbun  October 16, 2014  Amid local concerns of the further spread of radioactive materials, Tokyo Electric Power Co. announced plans to start dismantling the canopy installed over the destroyed Fukushima No. 1 nuclear plant’s No. 1 reactor building.

The operation, announced by TEPCO on Oct. 15, will remove the cover that was erected in October 2011 over the building to prevent radioactive materials from entering the atmosphere……..

The process, which will begin Oct. 22, is a necessary step in removing the vast amounts of highly contaminated debris, rubble and dust that remain inside the building.

However, as the work to clear debris at the plant’s No. 3 reactor building in August 2013 spread radioactive materials in the area, the Fukushima prefectural government and experts are calling for careful measures to be taken in the dismantling………..

n the removal, the utility will drill 48 holes in the roof of the cover, each 30-centimeter squares. From the holes, synthetic resin will be sprayed as anti-scattering agents inside the building to minimize the possibilities of radioactive materials rising.

Starting from the end of this month, two of the six roof panels will be removed to install a camera to monitor the status of the debris inside.

Once the condition of the rubble is better understood, a specific schedule for the dismantling process will be created. The utility plans to begin major operations in March 2015 in hopes of starting the removal of debris in fiscal 2016. http://ajw.asahi.com/article/0311disaster/fukushima/AJ201410160049

October 18, 2014 - Posted by | Fukushima 2014

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