Applicability of base-isolation R&D in non-reactor facilities to a nuclear reactor plant

Abstract

Seismic isolation is gaining increased attention worldwide for use in a wide spectrum of critical facilities, ranging from hospitals and computing centers to nuclear power plants. The level of assurance of performance for such isolation systems for a nuclear power plant will be much greater than that required for non-nuclear facilities. The question is to what extent can R&D for non-nuclear use of seismic isolation be applied to a nuclear power plant. Experience shows that considerable effort is needed to adapt any technology to nuclear power facilities. This paper reviews the R&D programs ongoing for seismic isolation in non-nuclear facilities and related experience and makes a preliminary assessment of the extent to which such R&D and experience can be used for nuclear power plant application. Ways are suggested to improve the usefulness of such non-nuclear R&D in providing the high level of confidence required for the use of seismic isolation in a nuclear reactor plant.