In this paper, the double filter cylinder of the compact containment sump strainer in nuclear power station was adopted as the research object. The impact and transmission mechanical experiments were carried out to investigate the material and structural properties in the event of earthquake and LOCA (Loss-of-Coolant Accident). Furthermore, the modal analysis and the stress calculations were conducted in LOCA condition to test the validity of the filter cylinder. The research results could provide the basis for designing the double filter cylinder of the compact containment sump strainers.
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