Variability management: A still to be noticed role of workers

Moraes, Anna S. P.; Arezes, P.; Vasconcelos, Ricardo

doi:10.1201/b16490-81

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…According to European Directive 2002/44/EC [11], the assessment of WBV (Whole Body Vibration) exposure for a seated person requires the calculation of the daily exposure parameter A(8), expressed as the equivalent continuous root mean squared (RMS) acceleration over an eight-hour period:…”

Section: Methods Of Risk Evaluation Of Occupational Exposure To Wbvmentioning

confidence: 99%

“…Due to its particular characteristics, the extractive sector has often been chosen as the ideal scenario in which to analyse the problem [9], both in terms of purely monitoring [10,11], as well as of studying the correlated effects on operators health [12][13][14] and synergistic effects [15]. More specifically, the typical quarry machinery and vehicles [16], are a source of particularly significant vibrations, especially when the vehicles are used to carry out the heavy loading and unloading activities for which they were designed [17].…”

Section: Introductionmentioning

confidence: 99%

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Whole body vibrations: experimental assessment of anthropometric differences on the effects of WBV exposure in quarry workers

Degan¹,

Lippiello²,

Pinzari³

2015

WIT Transactions on the Built Environment

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The human biomechanical response to whole body vibrations (WBV) is affected by the inertial characteristics of the body itself, among which the anthropometric parameters of the subject, such as body mass and shape, are the most relevant.Although human exposure to mechanical vibration is universally recognized as a significant risk factor for workers, Directive 2002/44/EC indicates the minimum health and safety requirements regarding the exposure to risks arising from physical agents, stating that risk assessment may be essentially based on appropriate information available from the manufacturer without the obligation of carrying out any measurements. For this reason, information such as the machine type and model, operating conditions, driving style, soil type, and workplace characteristics are declared together with the manufacturer's vibration measurements carried out in accordance with specific ISO EN Standards. Clearly, these data do not refer to the specific operating conditions and they do not consider the inertial and geometric parameters of the driver himself (as if these factors could not affect the exposure results). This study aims to evaluate the relationship between the WBV exposure values of loader vehicle drivers and their main anthropometric characteristics, i.e., height and weight. In this case study, the responses of drivers to vibrations from the same vehicle are analysed by means of several sampling campaigns. A correlation study is then presented along with some considerations which are proposed in order to quantify the observed differences and to predict exposure values from anthropometric data.

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Section: Methods Of Risk Evaluation Of Occupational Exposure To Wbvmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Whole body vibrations: experimental assessment of anthropometric differences on the effects of WBV exposure in quarry workers

Degan¹,

Lippiello²,

Pinzari³

2015

WIT Transactions on the Built Environment

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“…Whole-body vibration (WBV) is one such hazard known for more than a century and widely discussed in various literatures due to its probable negative health impacts on working population [1][2][3][4][5][6][7][8][9][10][11][12][13] .In surface mining of minerals, various heavy earth-moving machines are deployed for all major operations. All these machineries are more often sophisticated and technologically advanced.…”

Section: Introductionmentioning

confidence: 99%

“…Chronic exposure to WBV (0.5 to 80 Hz) manifests in many adverse health impacts on operators. Low back pain (LBP) is considered to be a well-known occupational health issue among vehicle operators exposed to WBV 6,2,15,16 . Such health disorders are certainly not desirable and lead to considerable financial compensation in many countries.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Transmissibility Factors of Pneumatic Dumper Seats Used in Indian Mines- A Pilot Study

Mandal

Deshmukh

2017

Curr. World Environ

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Whole-body Vibration (WBV) is a well-known occupational health hazard in mining industry. Dumper operators are subjected to WBV generated from road-tyre interaction and transmitted through the base of the seat. Dynamic characteristics of vehicle seat are vital contributing factor in determining the quality of a seat in use. The objective of this pilot study was to evaluate the transmissibility factor of pneumatic dumper seats used in an Indian mine. Total fifteen (15) dumpers of two different makes with pneumatic seats were selected for the study purpose. The tri-axial seat-pad accelerometers (SVANTEK make SV 38A) collected data in all three orthogonal axes of translational or rectilinear vibration. The mono-axial or single axis accelerometer (SVANTEK make SV 80 with mounting magnet SA 32) was simultaneously positioned rigidly on the floor to record signals in vertical direction. The data so obtained were then calculated using a vibration risk calculator in MS-EXCEL to quickly predict the health impacts using the measured vibration magnitude along with period of exposure per day. The results obtained clearly indicated that the drivers of all the fifteen (15) dumpers are at moderate risk of adverse health effects. It was clear from the SEAT factor calculated using rms and VDV values that the present seats installed in all the dumpers are not efficient and failed to attenuate the vibrations from the floor to seat and ultimately to the body of the dumper operator. It was observed that further in-depth evaluation of engineering and designing part of the seats used in these types of dumpers is desirable. The future scope of such evaluations must take into consideration the actual working condition to be able to realistically attenuate the vibrations so as to provide comfort and relief to the dump operators in mines.

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An Udwadia-Kalaba Equation based active seat suspension controller for mining dump trucks

2016

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Variability management: A still to be noticed role of workers

Cited by 5 publications

References 16 publications

Whole body vibrations: experimental assessment of anthropometric differences on the effects of WBV exposure in quarry workers

Whole body vibrations: experimental assessment of anthropometric differences on the effects of WBV exposure in quarry workers

Evaluation of Transmissibility Factors of Pneumatic Dumper Seats Used in Indian Mines- A Pilot Study

An Udwadia-Kalaba Equation based active seat suspension controller for mining dump trucks

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