SEISMIC ISOLATION AND TSUNAMI RESISTANCE MECHANISM FOR NUCLEAR POWER PLANT

摘要

PROBLEM TO BE SOLVED: To achieve improvement so as to guarantee seismic isolation and tsunami resistance safety at a sufficient safety factor against a giant earthquake of 7 or more in seismic intensity and a giant tsunami of 15 to 20 m or more in wave height.SOLUTION: A support mechanism is coupled to a nuclear reactor pressure vessel in a nuclear reactor turbine building, and configured to swing with a turbine support mechanism in one body, and a seismic isolation table and a damper which have large strength enough to support both the support mechanisms are arranged on foundation concrete to configure a seismic isolation table adaptive to a maximum earthquake amplitude. A seismic isolation conduit comprising an expansion pipe is arranged from a condenser circulation water pump installed in a water intake discharge passage in a cushioned and watertight state and a cooling sea water pump for core cooling etc., to equipment on a seismic isolation mechanism and from a pressure suppression chamber fixedly installed on the foundation to a storage vessel to guarantee seismic isolation and tsunami resistance safety in combination with emergency power generation facilities with a snorkel which has already been invented.