摘要
为提高核电机组能力因子和电站经济效益,越来越多先进的灵活性燃料管理策略被提出并应用。垢致轴向功率偏移(Crud Induced Power Shift,CIPS)作为影响核电站安全运行的重要因素之一,不同燃料管理策略对CIPS风险的影响不容忽视。本文以堆芯硼析出量作为判断标准,分别计算了某压水堆在18个月换料、16/20个月交替换料和24个月换料模式下的堆芯污垢(Chalk Rivers Unidentified Deposit,CRUD)总量、CRUD最大厚度及硼析出量,从CIPS风险控制角度给出最优的燃料管理策略。研究结果表明,24个月换料策略下的CRUD总量、CRUD最大厚度和硼析出量均最少,16/20个月交替换料策略下的CRUD总量、CRUD最大厚度和硼析出量均最多。从CIPS风险控制角度,24月换料模式具有一定的优越性。
In order to improve the capacity factor of nuclear power plants and the economic benefits of power plants,more and more advanced and flexible fuel management strategies have been proposed and conducted.CIPS(Crud Induced Power Shift)is one of the important factors on the safety of nuclear power plants.When choosing fuel management strategies,the assessment of CIPS risk cannot be ignored.Choosing core boron precipitation amount as criteria,the CRUD(Chalk Rivers Unidentified Deposit)amount,maximum CRUD thickness and boron precipitation amount of a PWR under 18-month refueling,16/20-month alternate refueling and 24-month refueling modes are calculated respectively,and the optimal fuel management strategy is given from the perspective of controlling the CIPS risk.The results show that the total amount of CRUD,maximum CRUD thickness and boron precipitation amount are the least under the 24-month refueling strategy,and the total amount of CRUD,maximum CRUD thickness and boron precipitation amount are the most under the 16/20-month alternate refueling strategy.From the perspective of controlling CIPS risk,the 24-month refueling mode has advantages.
作者
毛玉龙
邱斌
冯英杰
蒙舒祺
MAO Yulong;QIU Bin;FENG Yingjie;MENG Shuqi(China Nuclear Power Technology Research Institute,Shenzhen of Guangdong Prov.518000,China)
出处
《核科学与工程》
CAS
CSCD
北大核心
2022年第5期998-1003,共6页
Nuclear Science and Engineering
基金
国家自然科学基金(U20B0211,针对堆芯氧化腐蚀产物材料-热工-中子行为的多物理耦合机理)
国家自然科学基金(52171085,模拟压水堆一回路冷却剂中燃料包壳管表面污垢沉积行为与机理研究)。
