Safety enhancement is essential to spent fuel storage racks of nuclear power plant after Fukushima accident. Criticality safety, cooling safety and structural safety enhancement for CAP1400 (a larger advanced pressurized water reactor developed by China) spent fuel storage racks of are proposed and prominent results have been obtained. The criticality analysis results indicate that neutron absorber insert is efficient to increase criticality safety of storage rack. The CFD simulation and seismic analysis reveal that these storage racks can meet the cooling safety and structural integrity requirements. Both neutron absorber inserts and passive spent fuel pool cooling technology have good application prospect.

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