Semi portal cranes transport loads (e.g. fuel element Castor casks, etc.) from the nuclear power plant access road to the platform of the materials sluice (access to the reactor building). The top trolley with redundant safety hoists in accordance with KTA 3092-4.3 has operating loads of approx. 200 - 300 tons (special loads approx. 350 - 400 tons).
The electric-control system is located either on the trolley itself or in an e-container at the bottom between the concrete legs on the reactor side. The crane operation takes place either via cabin control or radio remote control