The operator of the damaged Fukushima Daiichi nuclear power plant started a robotic survey inside the No. 1 reactor on Saturday.
Tokyo Electric Power Company send a remote-controlled robot into the reactor’s containment vessel to look at the state of debris — a mixture of molten fuel and reactor parts. The debris is believed to be under contaminated water at the bottom of the vessel.
The utility had originally planned to start the probe on Tuesday. But it called off work when images from a camera to monitor the robot became unavailable.
The company later ascertained the cable connecting the camera to the monitor screen was broken.
TEPCO said it replaced the cable with a new one. It plans to conduct the survey for 4 days using the robot equipped with a camera and dosimeter.