Study & Implementation of Mixied Core & Increased Enrichment in Ling'ao Nuclear Power Station
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摘要: 岭澳核电站与大亚湾核电站燃料的首循环相同,从第二循环开始,岭澳核电站的燃料管理模式怎样设计及怎样充分利用大亚湾核电站的成功经验是目前所面临的问题。在正常情况下,核电站第二循环在堆芯设计和运行方面本来就比较困难,能否将大亚湾核电站在第九循环实施18个月换料时更换新型AFA3G核燃料的经验提早在岭澳核电站第二循环实施,岭澳核电站第二循环是否更换燃料及更换什么样的燃料组件(带还是不带MSMG的AFA3G),这是必须解决的问题。如果在第二循环中使用与大亚湾核电站一样的AFA3G,则岭澳核电站第二循环造成混合堆芯,存在特殊安全分析和执照申请困难。此外,还介绍了如何系统、全面地考虑岭澳核电站燃料第二～第五循环的设计与优化问题。Abstract: The first cycles of Ling’ao and Daya Bay Nuclear Power Stations are the same.It is the challenge for Ling’ao NPS to design the fuel management mode and how to utilize the successful experiences from Daya Bay NPS.The fuel management design for the second cycle is rather difficult in normal conditions.There must be clear answers to the questions that whether or not to change the fuel type from the second cycle and which type of fuel to be used for the change（AFA 3G with or without MSMG）.If the same fuel type of AFA 3G with MSMG in Daya Bay NPS would be used in Ling’ao second cycle,it would be the mixed core and there should be special safety analysis and licensing issues.This paper introduces the overall optimization and design from cycle 2 to 5.
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Key words:
- Ling'ao nuclear power station /
- Mixed Core /
- Fuel Management /
- Fuel enrichment
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