工作场所激光辐射测量及质量控制分析  

Laser radiation measurement and quality control in workplaces

作　　者：韩承[1] 邢维奕[1] 李欣荣 刘静[1] 曾强[1] HAN Cheng;XING Wei-yi;LI Xin-rong;LIU Jing;ZENG Qiang(Institute of Occupational Health,Tianjin Center for Disease Control and Prevention,Tianjin 300011,China)

机构地区：[1]天津市疾病预防控制中心职业健康所,天津300011

出　　处：《环境与健康杂志》2024年第8期735-738,共4页Journal of Environment and Health

基　　金：天津市医学重点建设学科-劳动卫生与职业病(TJYXZDXK-066B)。

摘　　要：目的对某医疗器材生产工厂开展工作场所激光辐射测量,并进行质量控制分析。方法根据《工作场所物理因素测量第4部分:激光》(GBZ/T 189.4—2007)、《工作场所有害因素职业接触限值第2部分:物理因素》(GBZ 2.2—2007),于2023年对某医疗器材生产工厂配备工业激光打标机的“包装和入库”岗位,使用激光功率计和低功率热电偶探头,对激光器预热、调整激光束聚焦、激光打标看护作业流程进行激光辐射测量和质量控制。结果3个作业流程的平均辐照度分别为1.31、1.39、1.67 m W/cm^(2),均<0.1 W/cm^(2),符合限值要求。根据《测量不确定度评定与表示》(JJF 1059.1—2012),3个作业流程测量合成不确定度uc分别为16.5%、15.6%、12.2%,扩展不确定度U分别为33.0%、31.2%、24.2%(k=2);测量重复性引入的不确定度分量u1分别为16.2%、15.3%、11.8%,是不确定度的主要来源。结论对激光辐射测量质量给出定量表述,有助于评估测量可靠性并进一步质量控制。提出了工作场所激光辐射测量的具体质量控制措施,以及相关作业人员工程防护和个体防护建议。Objective Tomaster a good method of test and quality control for laser radiation measurement in workplace.Methods A medical equipmentfactory was chosen as the investigated workplace.According to GBZ/T 189.4-2007 Measurement of Physical Agents in Workplace Part 4:Laser Radiation,GBZ 2.2-2007 Occupational exposure limits for hazardous agents in the workplace:Physical agents,the packaging and warehousing position that involved industrial laser marking machines was chosen in 2023.Laser radiation measurements and quality control of laser preheating,laser beam focusing adjustment,and laser marking supervision process were conducted by using a laser power meter and a low-power thermocouple probe.Results The calculations yielded average radiation values of 1.31 m W/cm^(2),1.39 m W/cm^(2),and 1.67 m W/cm^(2)for the three processes,respectively.The results all met the exposure limit requirements(<0.1W/cm^(2)).According to JJF 1059.1-2012 Evaluation and Expression of Uncertainty in Measurement,the combined uncertainties for the three processes were 16.5%,15.6%,and 12.2%,while the expanded uncertainties(k=2)were 33.0%,31.2%,and 24.2%.The uncertainty components u_1attributed to the repeatability of the measurement operations were 16.2%,15.3%,and 11.8%,respectively,which were the main sources of uncertainty.Conclusion It was necessary to provide quantitative expression of the quality of laser radiation measurements to evaluate their reliability,thereby taking further quality control measures.This study presents a specific quality control measures for laser radiation measurement in the workplace and the recommendations for engineering protection and personal protection related to laser radiation operations.

关 键 词：工作场所 激光辐射测量 质量控制 不确定度评定 

分 类 号：R134[医药卫生—劳动卫生]