Abstract: An anti-loosening bolt assembly includes a bolt having a bolt head and a bolt shank; a fixed nut having second threads on an inner circumferential surface thereof; and a washer, wherein the bolt head includes a plurality of locking protrusions, each of the locking protrusions having an inclined locking surface and a vertical locking surface, the washer includes a plurality of stop protrusions, each of the stop protrusions having an inclined stop surface and a vertical stop surface, and a magnetic member is provided in the washer such that the magnetic member maintains a combined state of the washer with an objective member using a magnetic force, so that when a rotational force is applied to the bolt in the loosening direction, the inclined locking surface is stopped by the inclined stop surface, thereby preventing the bolt from loosening and rotating.

Abstract: An apparatus for filling insulation material consists of a vibrating means; a lift driving means for lifting the vibrating means; a horizontal transporting means for horizontally transporting the vibrating means and the lift driving means along the guide rail of the storage tank; an automatic winding means; a level sensing means for checking the amount of filling of the insulation material; a flux preventing means for securely maintaining the flux in the horizontal direction and verticality of the vibrating means; a descending position sensing means for restricting the descending position of the vibrating means by touching the insulation material; a control means for checking the amount of the insulation material filled along with automatically remote controlling the vibrating means, the level sensing means and the lift driving means; and a display means for directly observing the inside through a camera.