Tepco to resume attempt to probe damaged reactor at Fukushima No. 1 plant

The device will also measure the temperature and radioactivity levels in the area. The survey is expected to take one day. In January last year, an inserted camera with a limited view captured possible melted fuel in the interior of the No. 2 reactor. The following month, Tepco attempted a survey using a scorpion-shaped robot inside the unit, but the effort ended in failure due to a technical flaw. Nearly seven years after the March 2011 earthquake and tsunami that wrecked the plant, details of the damage to the reactors remain largely unknown due to high levels of radiation.