유한요소법을 이용한 원자력 발전소용 쓰나미 댐퍼의 구조해석

Abstract

The tsunami dampers are installed on the outer wall of the nuclear power plant, it is usually the role of ventilation windows in the machine room, but when it is flowed large waves over the outer wall, is a device for preventing the flooding of the machine room . Therefore, it is necessary to have sufficient strength and rigidity to the pressure caused by the tsunami. Because of the nuclear power plant accident consists of additional damage such as a tsunami, as seen in Indonesia, 2004 and in Japan, 2012., accident of nuclear power plants is not no matter how small possibility. The tsunami damper consists of a blade and the casing and the hinge binds the two parts. In this study, through the structural analysis by changing the design parameters of the tsunami damper compare and analysis behavioral characteristics, and examined the safety. The design parameters include the number of blade bracket and blade thickness, each model compare stress and deformation. Also the seal is inserted between blade and casing, the role of seal is a sealing action to prevent water leakage when high water pressure act. Seal may occur the leaks beacause of abrasion, compression or aging. The flooding of the machine room has caused an expected phenomenon, safety of the seal must also ensure to plan tsunami damper’s safety. Therefore the role of sealing is also very important. Structural analysis is conducted to compare the contact characteristics of seal, in order to confirm the effective watertightness of the tsunami damper.