A unique robot designed to perform diagnostics and repairs on the wall lining, as well as the bottom of the cooling ponds of VVER-1200 reactor-enabled units, has been tested at the Leningrad Nuclear Power Plant (NPP).
The robotics device was constructed specifically for servicing new types of nuclear power plants. Additional operations like draining water from the pool or unloading fuel in order to operate the NPP are no longer required, unlike the current method of NPP operation.
A distinguishing feature of the robot is its versatility: it looks for potential leaks, determines their coordinates, cleans up the defective surface and performs plating of the surface by welding. Its repair modules are equipped with swivel brackets. This allows for work in any hard-to-reach areas of the pool, for example, in the corners.
Chief Engineer at the Leningrad NPP-2, Aleksandr Belyaev noted: “A robot that can inspect and repair the lining of the fuel pool, if necessary, will quickly eliminate leaks to maintain the design water level in it.”
The device was tested at a special stand, where experts simulated the entire chain of operations it needs to perform. The robot is ready for operation in the storage pools of Leningrad NPP Units 5 and 6.