通过擦拭取样估算核电厂厂房气溶胶浓度的方法及其在大流量空气取样测量中的应用

辐射防护通讯 ›› 2025, Vol. 45 ›› Issue (5): 20-27.

通过擦拭取样估算核电厂厂房气溶胶浓度的方法及其在大流量空气取样测量中的应用

任学明^1,2, 宋玉收¹, 李伟², 王天成², 朱水平², 伍根球³, 马强²

1.哈尔滨工程大学,哈尔滨 150001;
2.台山核电合营有限公司,广东台山 529200;
3.山西中辐核仪器有限责任公司,太原 030006

收稿日期:2025-01-23 出版日期:2025-10-20 发布日期:2026-01-15
通讯作者: 宋玉收。E-mail:songyushou80@163.com
作者简介:任学明(1981—),男,2008年毕业于西安交通大学核技术及应用专业,工学硕士,现为哈尔滨工程大学在读博士研究生,正高级工程师。E-mail:renxueming@cgnpc.com.cn

A method for estimating derived air concentration of aerosol by using wiping sampling in nuclear power plants and its application in high flow rate air sampling

REN Xueming^1,2, SONG Yushou¹, LI Wei², WANG Tiancheng², ZHU Shuiping², WU Genqiu³, MA Qiang²

1. Harbin Engineering University, Harbin 150001;
2. Taishan Nuclear Power Joint Venture Co., Ltd., Guangdong Taishan 529200;
3. Shanxi Zhongfu Nuclear Instruments Co., Ltd., Taiyuan 030006

Received:2025-01-23 Online:2025-10-20 Published:2026-01-15

摘要/Abstract

摘要： 提出一种通过擦拭取样估算某核电厂厂房气溶胶浓度的简易方法,该方法考虑了难测核素⁶³Ni以及仪表测量面积、擦拭取样纸和大流量空气取样滤纸面积差异的修正。结合测量分析氡及其子体在大流量空气取样滤纸上沉积部分的平均半衰期,给出了大流量空气取样测量结果的修正方法。主要结论有:(1)擦拭取样测得的核素谱与厂房气溶胶取样所测核素谱一致性较好;(2)难测核素⁶³Ni对估算结果影响在1%~4%左右;(3)该核电厂房单位混合导出空气浓度(1DAC_mix)在1.62×10³~3.02×10³Bq/m³之间;(4)在给定测量条件下,使用表面污染监测仪6150AD5+AD17以及CF-901-DIGITAL/230,估算得到该核电厂气溶胶浓度为1DAC_mix时,对应气溶胶取样滤纸的测量值在14~66 s^-1之间;(5)在设定的取样时间和取样流量下,氡及其子体的平均半衰期在6~12 min之间。其他核电厂可以参考该方法估算典型混合DAC_mix及其与表面污染测量值之间的关系,以及指导设定大流量空气取样气溶胶污染判定阈值。

关键词: 擦拭取样, 气溶胶, 导出空气浓度, 大流量空气取样, 氡及其子体

Abstract: A simpling method is proposed to estimate the derived air concentration (DAC) of aerosols in nuclear power plants through wiping sampling. This method considers the correction of difficult to measure nuclide 63Ni and the correction of response coefficients between different areas of measuring instruments, wiping sampling paper, and high flow rate air sampling filter paper. Based on the measurement and analysis of the average half-life of radon and its daughters in the deposition part of high flow rate air sampling filter paper, a correction method for the measurement results of high flow rate air sampling is proposed. The main conclusions are as follows: (1) The proportion of representative nuclides measured by wiping samplings is relatively consistent with that measured by actual air sampling; (2) The correction of difficult to measure nuclide 63Ni has a minor impact on the overall results, ranging from 1% to 4%; (3) A typical mixed DAC ranges from 1.62×10³ Bq/m³ to 3.02×10³ Bq/m³, which has certain reference value in similar nuclear power plants; (4) A mixed DAC on air sampling filter paper for a nuclear power plant is relate to 14-66 s^-1 measured using 6150AD5+AD17 and CF-901-DIGITAL/230 under given measurement conditions; (5) The average half-life of radon and its daughters varies from 6 minutes to 12 minutes under the set sampling time and sampling flow rate. Other nuclear power plants can refer to the above mentioned methods to measure the typical mixed DAC and the typical relationship between aerosol concentration values and surface contamination values of their nuclear power plants, in order to guide high flow rate air sampling and set aerosol contamination determination thresholds.

Key words: aerosol, wiping sampling, derived air concentration, high flow rate air sampling, radon and its daughters

中图分类号:

TL75⁺1

任学明, 宋玉收, 李伟, 王天成, 朱水平, 伍根球, 马强. 通过擦拭取样估算核电厂厂房气溶胶浓度的方法及其在大流量空气取样测量中的应用[J]. 辐射防护通讯, 2025, 45(5): 20-27.

REN Xueming, SONG Yushou, LI Wei, WANG Tiancheng, ZHU Shuiping, WU Genqiu, MA Qiang. A method for estimating derived air concentration of aerosol by using wiping sampling in nuclear power plants and its application in high flow rate air sampling[J]. RADIATION PROTECTION BULLETIN, 2025, 45(5): 20-27.

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