Systems Aspects of Seismic Design for Nuclear Plants

The response interactions between structural, mechanical, and electrical systems in a nuclear power plant subjected to earthquake motions are complex. Close communication and coordination between the design disciplines involved are essential during all phases of the feasibility-design-construct process to ensure that proper and timely consideration is given to seismic effects. Procedures for determining the interactive effects between structures and the systems and components supported thereon are reviewed. Design procedures to ensure timely interfacing of the design disciplines are recommended together with ground motion spectral shapes and suggested damping values. The need for overall system engineering coordination is reviewed together with recommendations for clear specifications and careful quality assurance throughout the design construction.