The Asahi Shimbun explains removal of the panel but notes that the fuel is not planned to be removed until 2020 from unit 1:
CHIKAKO KAWAHARA September 13, 2016 Fukushima plant building exposed as TEPCO opens old wounds. The Asahi Shimbun, http://www.asahi.com/ajw/articles/AJ201609130070.html
The panel dismantled that day measured 23 by 17 meters and weighed 20 tons.
…The plant operator said that it plans to be extra careful during the procedure. It will shroud the building in tarpaulins once the cover is removed as a precautionary measure against dust and other materials containing radioactive materials from being carried aloft by the wind.