JIG FOR HORIZONTAL FIXATION, RADIOACTIVE MATERIAL CONTAINMENT VESSEL, JIG FOR HORIZONTAL PLACEMENT, AND SYSTEM AND METHOD FOR HORIZONTALLY PLACING RADIOACTIVE MATERIAL CONTAINMENT VESSEL

摘要

PROBLEM TO BE SOLVED: To provide a jig for a horizontal fixation, etc., which have simple structure with seismic resistance ensured so as to suppress the increase in manufacturing cost.SOLUTION: A jig for a horizontal fixation 8 is for fixing a cylindrical cask 5 on a placing surface in a state where an axis direction of the cask 5 is a horizontal direction. A first pivot 13 and a second pivot 14 are provided between a peripheral surface of the horizontally-placed cask 5 and the placing surface. The second pivot 14 serves as a supporting point of the cask 5 to be horizontally placed when the position of the cask 5 is changed from a vertical state where the axis direction of the cask 5 is a vertical direction to a horizontally-placed state.