TEPCO's Sasori (scorpion) robot expired in Fukushima Daiichi's unit 2 reactor building:
Robot stuck in Fukushima No. 2 reactor on 1st try, abandoned. The Asahi Shimbun, February 17, 2017, http://www.asahi.com/ajw/articles/AJ201702170048.htmlTokyo Electric Power Co., which operates the plant in Fukushima Prefecture, had to abandon the Sasori (scorpion) robot after it became stuck inside the containment vessel of the power station's No. 2 reactor that morning...The account in the Asahi Shimbun does not attribute the failure to high radiation levels but one has to wonder.
But about 5 meters into its mission, the robot’s controls started to become less responsive. TEPCO believes it was due to deposits and other debris that are blocking the rail entering its drive system.
I must say that Daiichi is not looking too good on the cams the last week or so. I wonder whether TEPCO's recent disclosures are related to any new developments at the site?
Here are some screenshots from this morning: