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The effect of vibration exposure during haul truck operation on grip strength, touch sensation, and balance
International Journal of Industrial Ergonomics ( IF 2.5 ) Pub Date : 2017-01-01 , DOI: 10.1016/j.ergon.2016.11.009
Jonisha Pollard 1 , William Porter 1 , Alan Mayton 1 , Xueyan Xu 2 , Eric Weston 3
Affiliation  

Falls from mobile equipment are reported at surface mine quarry operations each year in considerable numbers. Research shows that a preponderance of falls occur while getting on/off mobile equipment. Contributing factors to the risk of falls include the usage of ladders, exiting onto a slippery surface, and foot or hand slippage. Balance issues may also contribute to fall risks for mobile equipment operators who are exposed to whole-body vibration (WBV). For this reason, the National Institute for Occupational Safety and Health, Office of Mine Safety and Health Research conducted a study at four participating mine sites with seven haul truck operators. The purpose was to ascertain whether WBV and hand-arm vibration (HAV) exposures for quarry haul truck operators were linked to short-term decreases in performance in relation to postural stability, touch sensation threshold, and grip strength that are of crucial importance when getting on/off the trucks. WBV measures of frequency-weighted RMS accelerations (wRMS) and vibration dose value (VDV), when compared to the ISO/ANSI standards, were mostly below levels identified for the Health Guidance Caution Zone (HGCZ), although there were instances where the levels were within and above the specified Exposure Action Value. Comparably, all mean HAV levels, when compared to the ISO/ANSI standards, were below the HGCZ. For the existing conditions and equipment, no significant correlation could be identified between the WBV, HAV, postural stability, touch sensation threshold, and grip strength measures taken during this study.

中文翻译:

运输卡车操作过程中的振动暴露对抓地力、触觉和平衡的影响

据报道,每年在露天采石场作业中,移动设备造成的坠落事故数量可观。研究表明,在上下移动设备时,跌倒的几率很大。导致跌倒风险的因素包括使用梯子、滑到光滑的表面上以及脚或手滑倒。平衡问题也可能导致暴露于全身振动 (WBV) 的移动设备操作员的跌倒风险。出于这个原因,国家职业安全与健康研究所、矿山安全与健康研究办公室在四个参与的矿场与七名拖车操作员进行了一项研究。目的是确定采石场运输卡车操作员的 WBV 和手臂振动 (HAV) 暴露是否与姿势稳定性方面的性能短期下降有关,上/下卡车时,触感阈值和握力至关重要。与 ISO/ANSI 标准相比,频率加权 RMS 加速度 (wRMS) 和振动剂量值 (VDV) 的 WBV 测量值大多低于为健康指导警告区 (HGCZ) 确定的水平,尽管在某些情况下在指定的曝光操作值之内和之上。相比之下,与 ISO/ANSI 标准相比,所有平均 HAV 水平都低于 HGCZ。对于现有条件和设备,在本研究中采取的 WBV、HAV、姿势稳定性、触觉阈值和握力措施之间没有显着相关性。与 ISO/ANSI 标准相比,频率加权 RMS 加速度 (wRMS) 和振动剂量值 (VDV) 的 WBV 测量值大多低于为健康指导警告区 (HGCZ) 确定的水平,尽管在某些情况下在指定的曝光操作值之内和之上。相比之下,与 ISO/ANSI 标准相比,所有平均 HAV 水平都低于 HGCZ。对于现有条件和设备,在本研究中采取的 WBV、HAV、姿势稳定性、触觉阈值和握力措施之间没有显着相关性。与 ISO/ANSI 标准相比,频率加权 RMS 加速度 (wRMS) 和振动剂量值 (VDV) 的 WBV 测量值大多低于为健康指导警告区 (HGCZ) 确定的水平,尽管在某些情况下在指定的曝光操作值之内和之上。相比之下,与 ISO/ANSI 标准相比,所有平均 HAV 水平都低于 HGCZ。对于现有条件和设备,在本研究中采取的 WBV、HAV、姿势稳定性、触觉阈值和握力措施之间没有显着相关性。尽管在某些情况下,水平在指定的暴露行为值之内或之上。相比之下,与 ISO/ANSI 标准相比,所有平均 HAV 水平都低于 HGCZ。对于现有条件和设备,在本研究中采取的 WBV、HAV、姿势稳定性、触觉阈值和握力措施之间没有显着相关性。尽管在某些情况下,水平在指定的暴露行为值之内或之上。相比之下,与 ISO/ANSI 标准相比,所有平均 HAV 水平都低于 HGCZ。对于现有条件和设备,在本研究中采取的 WBV、HAV、姿势稳定性、触觉阈值和握力措施之间没有显着相关性。
更新日期:2017-01-01
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