1 results about "Nuclear structure" patented technology

To efficiently dispose of in-reactor structures. [Solution] The method for dismantling the upper core structure is a method for dismantling the upper core structure stored in the reactor vessel, and includes the step of cutting at least a part of the upper core structure, which is to be cut, into a plurality of vertical cutting pieces, wherein in the cutting step, at least a part of the upper core structure is cut such that the height dimension of the cutting piece cut from the lowest part of the upper core structure is the smallest among the plurality of cutting pieces.