富集硼酸在压水堆机组的首次应用及其对材料腐蚀和辐射源项控制影响的初步研究

辐射防护 ›› 2025, Vol. 45 ›› Issue (5): 482-488.

富集硼酸在压水堆机组的首次应用及其对材料腐蚀和辐射源项控制影响的初步研究

王柱¹, 杨志超², 楚建伟¹, 苏兴¹, 周佳¹, 陈伟忠¹, 马强¹, 王溯源¹

1.台山核电合营有限公司,广东台山 529200;
2.生态环境部华南核与辐射安全监督站,广东深圳 518000

收稿日期:2024-12-20 出版日期:2025-09-20 发布日期:2026-01-14
作者简介:王柱(1972—),男,1994年毕业于武汉水利电力大学应用化学专业。E-mail:wangzhu@cgnpc.com.cn

Application of enriched boric acid in the primary system of a PWR unit and the preliminary study regarding its impact on the material corrosion and radiation source term control

WANG Zhu¹, YANG Zhichao², CHU Jianwei¹, SU Xing¹, ZHOU Jia¹, CHEN Weizhong¹, MA Qiang¹, WANG Suyuan¹

1. Taishan Nuclear Power Joint Venture Company, Guangdong Taishan 529200;
2. Southern Regional Office of Nuclear and Radiation Inspection of MEE, Guangdong Shenzhen 518000

Received:2024-12-20 Online:2025-09-20 Published:2026-01-14

摘要/Abstract

摘要： 本文介绍了富集硼酸首次在国内某压水堆机组上的应用情况,重点讨论了通过其应用实现了一回路冷却剂从寿期初即达到较高且稳定的pH值7.20的水化学控制策略,进而对降低一回路材料腐蚀和辐射源项控制所起到的重要作用。现场应用实践表明,通过上述水化学控制策略的实施,一回路金属材料腐蚀速率降至较低水平,特别是蒸汽发生器传热管材镍基合金的腐蚀释放,从而有利于确保防止放射性向环境释放的第二道屏障的完整性,有利于活化腐蚀产物辐射源项的控制,最终实现降低人员受照剂量的目标。

关键词: 压水堆, 辐射源项, 富集硼酸, 水化学控制策略, 镍基合金, 腐蚀, 钴-58

Abstract: This paper introduced the first application of enriched boric acid in a third generation PWR unit, and the water chemistry control strategy with higher and constant pH_t value (7.20) of the reactor coolant from the beginning of the cycle is realized through its application, which plays an important role in reducing primary material corrosion and radiation source term control. Field application practice shows that through the implementation of the above mentioned water chemical control strategy, the corrosion rate and release of primary metal materials, especially nickel in the steam generator tubes is reduced to a lower level, which is a benefit to ensuring the integrity of the second barrier and controlling of activated corrosion products and finally achieving the goal of minimizing the exposure dose to personnel.

Key words: pressurized water reactor, radiation source term, enriched boric acid, water chemistry control strategy, nickel-based alloys, corrosion, Co-58

中图分类号:

TL75+2.2

王柱, 杨志超, 楚建伟, 苏兴, 周佳, 陈伟忠, 马强, 王溯源. 富集硼酸在压水堆机组的首次应用及其对材料腐蚀和辐射源项控制影响的初步研究[J]. 辐射防护, 2025, 45(5): 482-488.

WANG Zhu, YANG Zhichao, CHU Jianwei, SU Xing, ZHOU Jia, CHEN Weizhong, MA Qiang, WANG Suyuan. Application of enriched boric acid in the primary system of a PWR unit and the preliminary study regarding its impact on the material corrosion and radiation source term control[J]. RADIATION PROTECTION, 2025, 45(5): 482-488.

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