When the telescopic mast fully extends, the robot can reach to a height of 12 m with a mission device to closely inspect an aerial working environment. A radiation hardened motor controller and a radiation hardened camera and a ram operating device for the manual ram drive mechanism are also developed. An image guiding program is also developed to help operators to control the robot. Fig. 10 shows the mockup test driving the manual ram drive mechanism. Before the robot extended the mast, the robot pulled down the flippers and the side bars to secure the stable horizontal pose. First the ram driving tool was inserted to the target, and then the clutch driving tool inserted. The tools were operated in accordance
with a given order.