Legris M, Poulin P
Complexe de santé et CLSC Paul-Gilbert, Saint-Romuald, Québec, Canada.
Am Ind Hyg Assoc J. 1998 Nov;59(11):774-8. doi: 10.1080/15428119891010947.
This study, conducted in 1987 and 1988, has made it possible to quantify exposure to noise among heavy equipment operators, associated laborers, and crane operators. The average daily noise exposure was 84 to 99 dBA for heavy equipment, 90 dBA for the laborer, and 74 to 97 dBA for the crane operator. The main sources of noise to which heavy equipment operators are exposed are vehicle engines and the muffler exhaust system, usually located near the operator. The presence of insulated cabs such as those found on power shovels, backhoes, wheel loaders, and graders help reduce noise exposure. The type of tasks carried out by the laborers, the sources of noise from heavy equipment around which they work, and the manual equipment they use determine the noise levels to which such workers are exposed. In the case of crane operators, an insulated cab significantly reduces the operator's exposure to engine noise.
这项于1987年和1988年开展的研究，使得对重型设备操作员、相关劳工及起重机操作员的噪声暴露情况进行量化成为可能。重型设备操作员的日均噪声暴露为84至99分贝（A），劳工为90分贝（A），起重机操作员为74至97分贝（A）。重型设备操作员所接触噪声的主要来源是车辆发动机及通常位于操作员附近的消声器排气系统。诸如在电铲、反铲挖土机、轮式装载机和平地机上配备的隔音驾驶室有助于减少噪声暴露。劳工所执行的任务类型、他们周围重型设备的噪声源以及他们所使用的手动设备决定了这些工人的噪声暴露水平。对于起重机操作员而言，隔音驾驶室能显著降低操作员接触发动机噪声的程度。
