The present invention relates to a polar crane for a nuclear power plant, and to inspect / repair / maintain the spray piping (4), the nozzle (5), and other devices, which are cooling system devices in the containment building (1) of a light water reactor type nuclear power plant, It is to provide a polar crane for a nuclear power plant equipped with a work platform elevating device (11) in order to reduce the time loss due to the installation of the temporary structure (6), reduce the likelihood of a safety accident during work, and reduce its own weight.
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