EXTRACTION TOOL JIG FOR EXTRACTION OF FUEL ROD FROM SPENT NUCLEAR FUEL ROD TRANSPORT

摘要

The present invention relates to a drawing tool jig for drawing fuel rods from a spent fuel rod conveying tube, by using a drawing tool jig for drawing out fuel rods from a conveying tube into which spent fuel rods are inserted. In the spent fuel rod transfer pipe, which prevents damage to the fuel rods that may occur during the operation of drawing the fuel rods, it is possible to withdraw the fuel rods more stably and effectively, thereby reducing the fuel rod extraction time. To provide a drawing tool jig for drawing the fuel rods, the technical configuration is a circular rod-shaped body having a hollow stepped to narrow the diameter in the upper direction, each projecting to form a rope connected to the upper outer peripheral place A protruding pin to be formed and an upper jig having a threaded portion formed on a lower outer periphery thereof; It has a coupling hole therein, the upper side having a diameter corresponding to the hollow of the upper jig, and the spent fuel rod transfer pipe having a spent fuel rod is installed on the upper surface of the spent fuel rod transfer pipe holder is installed Lower jig consisting of a lower portion is formed to be tapered at a predetermined angle to expand the diameter in the downward direction; A taper nut coupled to a screw portion formed at a lower outer periphery of the upper jig, and capable of adjusting and fixing a gap between the upper jig and the lower jig; Characterized in that consisting of a configuration including a.;Spent fuel rod, spent fuel rod transfer tube, spent fuel rod transfer tube holder, spent fuel rod take-out tool, take-out tool jig