Dust exposures in the wood processing industry.

U Alwis, J Mandryk, A D Hocking, J Lee, T Mayhew, W Baker
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引用次数: 56

Abstract

Workers at four different woodworking processes--two logging sites, four sawmills, one major woodchipping operation, and five joineries situated in the state of New South Wales in Australia--were studied for personal inhalable dust exposures (N = 182). The geometric mean exposure at logging sites was 0.6 mg/m3 (N = 7), sawmills 1.6 mg/m3 (N = 93), woodchipping 1.9 mg/m3 (N = 9), and joineries 3.7 mg/m3 (N = 66). Overall, 62% of the exposures exceeded the current standards. Among joineries, 95% of the hardwood exposures and 35% of the softwood exposures were above the relevant standards. A majority of workers (approximately 90%) did not wear appropriate respirators approved for wood dust, while the ones who did wear them, used them on average less than 50% of the time. The significant determinants of personal wood dust exposures (n = 163) were found to be local exhaust ventilation, job title, use of handheld tools, cleaning method used, use of compressed air, and green or dry wood processed. Type of wood processed (softwood or hardwood) was not found to be statistically significant.

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木材加工行业的粉尘暴露。
研究人员对澳大利亚新南威尔士州四个不同木工工序的工人进行了个人可吸入粉尘暴露的研究(N = 182),这四个木工工序包括两个伐木场、四个锯木厂、一个主要的木屑加工厂和五个细木工厂。几何平均暴露量分别为伐木场0.6 mg/m3 (N = 7)、锯木场1.6 mg/m3 (N = 93)、木屑场1.9 mg/m3 (N = 9)、细木工3.7 mg/m3 (N = 66)。总体而言,62%的暴露量超过了现行标准。细木工中,95%的硬木暴露量和35%的软木暴露量高于相关标准。大多数工人(约90%)没有佩戴适当的木粉尘防护口罩,而那些戴口罩的工人,平均使用的时间不到50%。个人木屑暴露的重要决定因素(n = 163)被发现是当地排气通风、职称、手持工具的使用、使用的清洁方法、压缩空气的使用以及未加工或干燥的木材。木材加工类型(软木或硬木)没有发现统计学显著性。
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