蒸汽发生器设计中ALARA原则的考虑  

Consideration of ALARA Principle in Design of Steam Generator

作　　者：崔素文 任红兵 高希培 

机构地区：[1]深圳中广核工程设计有限公司,广东深圳518172

出　　处：《核动力工程》2015年第4期107-110,共4页Nuclear Power Engineering

摘　　要：合理可行尽量低(ALARA)原则是核电厂辐射防护的基本原则。蒸汽发生器作为一回路最重要的设备之一,其设计应考虑ALARA原则,以限制并减少核电站人员的辐照剂量。通过对影响辐照剂量的重要设计过程进行分析后得出结论:通过优化选材、快速疏导一回路冷却剂、改善在役检查、加强屏蔽、优化水化学等举措,可使蒸汽发生器的设计更加满足ALARA原则。最后,根据上述研究结论,对二代加核电站蒸汽发生器的设计提出改进建议。The principle of ALARA （As Low as Reasonably Achievable） is one of the basic considerations in radiation protection. As one of the most important primary equipment, during the design of steam generators, the principle of ALARA shall be considered to limit or reduce the radiation exposure of plant personnel. Through analyzing the design process which might affect the irradiation dose, it is concluded that SG will further fulfill the ALARA principle if measures are taken to optimize the material used, to drain the primary coolant completely and quickly, to improve the in-service methods, to strengthen radiation shielding and to optimizing the water chemistry. Based on the conclusions, some improvements are proposed to make the SG of Generation 2＋ more complied with the ALARA principle.

关 键 词：蒸汽发生器设计 合理可行尽量低(ALARA) 电解抛光 疏水 水化学 

分 类 号：TK124[动力工程及工程热物理—工程热物理]