辐射防护 ›› 2024, Vol. 44 ›› Issue (4): 410-415.

• 辐射防护方法 • 上一篇    下一篇

压水堆二回路蒸汽外供工业应用的辐射防护探讨

庄亚平1, 刘维理1, 方圆2, 吴放1, 缪正强1   

  1. 1.山东核电有限公司,山东 烟台 265116;
    2.生态环境部核与辐射安全中心,北京 100082
  • 收稿日期:2023-03-06 出版日期:2024-07-20 发布日期:2024-08-05
  • 通讯作者: 方圆。E-mail:fangyuan1014@126.com
  • 作者简介:庄亚平(1976—),男,2005年毕业于哈尔滨工程大学核科学与工程专业,硕士,高级工程师。E-mail: zhuangyaping@spic.com.cn

Discussion on radiation protection for PWR second-loop steam supply for industrial application

ZHUANG Yaping1, LIU Weili1, FANG Yuan2, WU Fang1, MIAO Zhengqiang1   

  1. 1. Shandong Nuclear Power Company Co. Ltd., Shandong Yantai 265116;
    2. Nuclear and Radiation Safety Center, MEE, Beijing 100082
  • Received:2023-03-06 Online:2024-07-20 Published:2024-08-05

摘要: 核电机组具备提供大规模、稳定的工业蒸汽的能力。实验室测量表明,蒸汽发生器传热管无泄漏情况下,二回路蒸汽凝结水中除氚外的放射性核素的活度浓度与环境水样没有差异。本文参考饮用水标准,建议将二回路蒸汽工业应用的放射性核素管理目标值设定为3.0 Bq/kg;在蒸汽发生器排污管线上增设高灵敏度辐射监测仪,对主蒸汽管道N-16辐射监测通道进行技术改造,从而对蒸汽发生器传热管泄漏进行及时、有效及可靠的监测,与外供蒸汽管道出厂区边界的控制阀连锁,避免在运行和事故工况下放射性核素通过供汽管道排出厂区。

关键词: 压水堆, 工业蒸汽, 泄漏监测,

Abstract: Nuclear power reactor units have the ability to provide large-scale, stable industrial steam. Laboratory measurements show that, under the condition of no leakage in the heat transfer tube of the steam generator, the concentration of radionuclides in the condensed water of the second-loop steam is not different from that in the environmental water sample except for tritium. Based on the drinking water standard, this article proposes to control the target value of radionuclide management for industrial application of second-loop steam at 3.0 Bq/kg; A high-sensitivity radiation monitor was set up on the steam generator drainage pipeline and technical renovation on the main steam pipeline N-16 radiation monitoring channel was carried out, with the aim to provide timely, effective, and reliable monitoring of steam generator heat transfer tube leakage. It is interlocked with the control valve of the external steam supply pipeline at the factory boundary to prevent radionuclides from leakaging outside the factory area through the steam supply pipeline during operation and accident conditions.

Key words: PWR, industrial steam, leakage monitoring, tritium

中图分类号: 

  • TL75