Evaluation of whole-body vibration exposure experienced by operators of a compact wheel loader according to ISO 2631-1:1997 and ISO 2631-5:2004

Zhao, Xiaojing; Schindler, Christian

doi:10.1016/j.ergon.2014.09.006

Cited by 49 publications

(33 citation statements)

References 22 publications

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“…Although all HAV levels were within the range considered safe by the ISO and European standards for the period studied, it is still possible that vibration exposure had already contributed to some long-term effects on the operators. Recent research has questioned whether the RMS method underestimates vibration effects on human health (Zhao and Schindler, 2014). Also, vibration exposures can change dramatically over the course of time due to environmental factors, ground conditions, vehicle maintenance, and work environment changes such as relocation of pits and dump sites (Langer et al, 2015; Smets et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

The effect of vibration exposure during haul truck operation on grip strength, touch sensation, and balance

Pollard

Porter

Mayton

et al. 2017

International Journal of Industrial Ergonomics

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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.

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Section: Discussionmentioning

confidence: 99%

The effect of vibration exposure during haul truck operation on grip strength, touch sensation, and balance

Pollard

Porter

Mayton

et al. 2017

International Journal of Industrial Ergonomics

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“…The issue of compatibility between the limits provided in ISO2631 studies have already been mentioned in the studies by Alem, Zhao, and Schindler, and each of these researchers in turn have proposed specific corrective reforms for the VDV and S ed methods in the study of military vehicles and average loaders (20,24). As recommended by Alem, if the corrective reform of 5/3 to 8/4 in is used for VDV method, the health risk level of all the drivers might be higher than the upper boundaries and the health risk (24).…”

Section: Discussionmentioning

confidence: 99%

“…As recommended by Alem, if the corrective reform of 5/3 to 8/4 in is used for VDV method, the health risk level of all the drivers might be higher than the upper boundaries and the health risk (24). Also, when in the S ed method (as recommended by the study of Schindler and Zhao) the range of correction is from 34/0 to 52/0 the mean exposure in lines 1,2, and 4 would be above the upper boundaries and will probably contribute to the health risk (20).…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of Whole-Body Vibration Exposure Among Urban Metro Drivers: Comparing ISO2631-1 and ISO2631-5 Standards to Evaluate Exposure

et al. 2018

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Background: Excessive vibration is one of the harmful agents in the work environment, and many drivers are inevitably exposed to that during driving. Objectives: Using ISO 2631-1&5 standards in the present study, the evaluation of the whole-body vibration (WBV) exposure was carried among Tehran metro drivers. Methods: In this descriptive cross-sectional study, 23 trains were investigated and the level of exposure to vibration during daily working shift and vibration indicators were evaluated. According to ISO 2631-1, the following 5 factors were measured: the rate of frequency-weight acceleration r.m.s for each axis, the combination of axes, crest factor, peak acceleration, vibration dose value (VDV), and recent equivalent static compressive stress (Sed) and risk (R) factors -estimation criteria for damage to lumbar spine. Results:The results indicated that based on the basic method, the levels of drivers exposure to the vibration are less than the lower limit set by health guidance caution zone (HGCZ), and according to the VDV methods, 4 cases were found to be above the upper limit, 8 cases were within the HGCZ, and the rest were less than the mentioned limit. Moreover, according to the Sed method, 4 drivers had exposures below the lower limit, 7 had exposures within the range of HGCZ, and 12 of the mover the limit. On the other hand, on the basis of R factor, the levels of exposure of the 3 drivers were within the range of HGCZ, while the rest of them experienced the levels lower than that. Conclusions:The results showed that there are several differences among the calculated criteria confirming that some of these indicators may not show a safe limit.

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“…There are numerous scientific studies that explore driver's WBV exposure levels in different job sectors [4]. Some analyze the operator's exposure during the operations on large earth moving machinery in the quarry and construction sector [5]. Others focus on the bus drivers; this worker group is one of those indicated widely as being at an increased risk for Low Back Pain (LBP) [6].…”

Section: Introductionmentioning

confidence: 99%

Effects of Ground Conditions on Whole-Body Vibration Exposure on Cars: A Case Study of Drivers of Armored Vehicles

Degan¹,

Coltrinari²,

Lippiello³

et al. 2017

WIT Transactions on the Built Environment

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The purpose of this paper is to highlight how the types of road and the vehicle characteristics influence the whole-body vibration (WBV) exposures. WBV exposure is common in occupational drivers and it can generate serious musculoskeletal injuries of the arms, shoulders, neck and lower back. Numerous studies have shown that many factors influence the dose exposure: the driver's position, style guide, vehicle speed and the driver's physical characteristics, such as body weight and height. In order to point out possible interactions between exposure to whole body vibration, vehicle characteristics and the types of road, an experimental campaign was created: firstly, a model standard car for urban use was utilized, and later, the same model vehicle was modified by the armour-plate installation for the ballistic protection. Each vehicle was driven by the same driver for a defined time on a curvilinear common urban route, along both rise and downhill directions. The assessment of the daily vibration dose was carried out in accordance with ISO 2631-1(1997) standard and expressed as the weighted frequency equivalent continuous root mean squared (RMS) acceleration over an eight-hour period. The results obtained from the experimental campaigns revealed that the WBV exposure is strongly conditioned by vehicle characteristics. In particular the installation of bulletproof armour contributed to change the car mass distribution and its total weight, modifying the professional dose. This modification generated an attenuation of frequency-weighted RMS. acceleration values all over the frequency spectrum and consequently a WBV exposure reduction. The present study encourages further study in order to understand how different factors influence exposure to WBV research.

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Evaluation of whole-body vibration exposure experienced by operators of a compact wheel loader according to ISO 2631-1:1997 and ISO 2631-5:2004

Cited by 49 publications

References 22 publications

The effect of vibration exposure during haul truck operation on grip strength, touch sensation, and balance

The effect of vibration exposure during haul truck operation on grip strength, touch sensation, and balance

Evaluation of Whole-Body Vibration Exposure Among Urban Metro Drivers: Comparing ISO2631-1 and ISO2631-5 Standards to Evaluate Exposure

Effects of Ground Conditions on Whole-Body Vibration Exposure on Cars: A Case Study of Drivers of Armored Vehicles

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