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在广东大亚湾核电站最终安全分析报告(FSAR)的基础上,对主给水管道破裂事故重新进行计算,并评价应急给水流量降低对电厂安全裕量的影响。结果表明,在应急给水系统提供的流量降低至41.8m3/h 时,主给水管道破裂事故仍然能够满足验收准则的要求,并且尚具备一定的安全裕量。
Based on the FSAR of Guangdong Daya Bay Nuclear Power Station, the rupture of the main feedwater pipeline is recalculated and the impact of the decrease of emergency feedwater flow on the safety margin of the power plant is evaluated. The results show that when the flow supplied by the emergency water supply system is reduced to 41.8m3 / h, the failure of the main feedwater pipe can still meet the acceptance criteria and still have a certain safety margin.