| 摘要 |
PROBLEM TO BE SOLVED: To provide a higher-order vibration control device that controls higher-order vibration resulting from an impact load, such as aircraft collision, applied to a nuclear power plant.SOLUTION: A higher-order vibration control device 1 is installed in a nuclear power plant with a reactor containment vessel and a nuclear reactor building and comprises an impactor 1a, a housing 1b that receives the reaction force of the impactor 1a, and a locking mechanism 2. The impactor 1a is installed on the upper surface or the lower surface of a floor 31 of the nuclear power plant so as to roll in a horizontal direction with respect to the floor 31. The housing 1b encloses the impactor 1a and guides the rolling of the impactor 1a. The locking mechanism 2 restricts the rolling of the impactor 1a. In the event that a flying object may possibly impact the nuclear power plant, the locking of the locking mechanism 2 is released. |
