Stewart-Taylor A J, Cherrie J W
Department of Environmental and Occupational Medicine, University of Aberdeen, U.K.
Ann Occup Hyg. 1998 Nov;42(8):565-9. doi: 10.1016/s0003-4878(98)00062-3.
It is hypothesised that there is a causal association between workers' perceptions of the risks from handling hazardous materials, their behaviour while working and their consequent exposure. This has been investigated in a small group of workers carrying out remedial work on amosite insulating boards and similar products. Risk perception was first assessed using a questionnaire and then the workers' behaviour was recorded alongside task-based measurements of fibre exposure. There was a clear association of higher cumulative exposures when workers used power tools compared to manual methods (about seven times higher). Careful bagging was shown to reduce exposures by a smaller margin, (approximately half). Workers whose perception of the risks was poorer were found to be more likely to use power tools to remove the asbestos containing material. However, fibre exposure was not found to be directly associated with risk perception. Further work is necessary to clarify the validity of the original hypothesis.
据推测，工人对处理危险材料的风险认知、工作时的行为以及由此导致的接触之间存在因果关联。这一点已在一小群对铁石棉绝缘板及类似产品进行修复工作的工人中进行了调查。首先通过问卷调查评估风险认知，然后记录工人的行为以及基于任务的纤维接触测量数据。与手工方法相比，当工人使用电动工具时，累积接触量明显更高（约高出七倍）。结果表明，仔细装袋可使接触量有较小幅度的降低（约为一半）。发现对风险认知较差的工人更有可能使用电动工具来清除含石棉材料。然而，未发现纤维接触与风险认知直接相关。有必要开展进一步工作以阐明原假设的有效性。
