| 摘要 |
PROBLEM TO BE SOLVED: To provide a hatch structure of a containment vessel capable of preventing inclination when storing a temporary bridge and facilitating an erection and a storage.SOLUTION: The hatch structure of a containment vessel includes a tunnel part 11 disposed at a side face of a containment vessel 10; a hatch cover 12 for closing an opening inside the tunnel part 11; and a temporary bridge 13 to be erected on a floor 10f in the containment vessel 10 when opening the hatch cover 12. The hatch structure further includes: link members 2 each including a first hinge part 21 rotationally connected to the temporary bridge 13 and a second hinge part 22 rotationally connected to the tunnel part 11; and locking mechanisms 3 for restricting the rotational turning of the second hinge parts 22 in the middle of folding the erected temporary bridge 13 to the tunnel part side and pushing the erected temporary bridge 13 over sideways. |
