焊接烟尘:工业控制方法的比较研究

IF 1.8 Q3 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH
Safety Pub Date : 2023-06-24 DOI:10.3390/safety9030042
P. Knott, Georgia Csorba, Dustin Bennett, Ryan L. Kift
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引用次数: 0

摘要

焊接烟雾是在焊接活动中产生的,对于在焊接行业工作的人来说是一种已知的致癌危害。工人的暴露已被证明经常超过适用的工作场所暴露标准,需要采取控制措施来减少工人的暴露。本研究的目的是比较控制措施的有效性,以防止焊接烟雾暴露给工人。为了实现这一目标,在四种不同的焊接任务中使用了三种常见的焊接烟雾控制措施(局部排气通风(LEV),动力空气净化呼吸器(papr)和非枪抽气)。与不使用控制相比,LEV罩捕获可能会将焊工呼吸区的焊接烟雾浓度降低多达9倍。使用无枪LEV可能会将焊工呼吸区的焊烟浓度降低12倍。对于所有取样的焊接活动,PAPR的第5百分位有效保护系数远远大于AS/NZS 1715:2009中规定的具有PAPR- p3级颗粒过滤器的任何头部覆盖物的动力空气净化呼吸器(PAPR)所需的最低保护系数50。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Welding Fume: A Comparison Study of Industry Used Control Methods
Welding fume is generated during welding activities and is a known cancer-causing hazard for those working in the welding industry. Worker exposure has been shown to regularly exceed the applicable workplace exposure standard, and control measures are required to reduce worker exposure. The aim of this study is to compare the effectiveness of control measures to prevent welding fume exposure to workers. To achieve this aim, three common welding fume control measures (local exhaust ventilation (LEV), powered air purifying respirators (PAPRs) and on-gun extraction) were used during four different welding tasks. Compared to using no controls, LEV hood capture is likely to reduce welding fume concentrations in the breathing zone of a welder by up to a factor of 9. The use of on-gun LEV is likely to reduce welding fume concentrations in the breathing zone of a welder by up to a factor of 12. The 5th percentile effective protection factors of the PAPR for all sampled welding activities were considerably greater than the required minimum protection factor of 50 specified in AS/NZS 1715:2009 for powered air purifying respirators (PAPRs) with class PAPR-P3 particulate filters with any head covering.
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来源期刊
Safety
Safety Social Sciences-Safety Research
CiteScore
3.20
自引率
5.30%
发文量
71
审稿时长
7 weeks
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