Here is a remote control system that can be used to monitor nuclear accidents. RAM consists of a ground vehicle, drone, and radiation sensor module. Its ground vehicle works over any terrain with a max speed of 60 km/h. It has a max payload of 160kg and works for over 5 hours.
The drone has a range of 1km, so it monitors accidents from the air. The radiation sensor has a detection range of 100 Sv/h and is ideal for dose map generation.