The round-shape six-engine crash-proof drone was designed in cooperation with the International Atomic Energy Agency (IAEA). It has an in-built camera and several radiation meters and can perform autonomous flights.
The aircraft is currently undergoing tests. If all goes well, it will be put into operation in 2015.
At present, Japan uses a special helicopter to measure radiation around Fukushima. Unlike the drone, the helicopter cannot approach buildings or power supply lines.