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Evaluation of Whole Body Vibration (WBV) of Dumper Operators Based on Job Cycle

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Abstract

Dumper operators are frequently exposed to whole body vibration (WBV) in surface mines. Surface mining activities involve the amalgamation of comparatively high intensity of vibration and extended exposure durations. Efficient risk reduction mandates knowing of important phases of a task that poses a threat to health of dumper operators. So far in India very limited studies have been reported on WBV exposure with regard to surface mines. This paper evaluates WBV of dumper operators based on ISO 2631-1:1997 Standards and European Union (EU) Directive 2002 for different phases of job cycle. Six dumpers were considered for this study and the vibration measurements were made for all the four phases of the job cycle by placing the triaxial accelerometer on the operator’s seat-surface and at the seat-back, independently. The findings of the study revealed that the haulage task (loaded travel and empty travel) remains the chief contributor to vibration exposure according to seat-surface and seat-back measurements. Maximum frequency weighted root mean square (RMS) of 1.12 m/s2 and 1.09 m/s2 were reported for empty travel task for seat-surface and seat-back measurements, respectively. For seat-surface measurements based on RMS, Z axis remains as the dominant axis of vibration for all the dumpers during haulage task, whereas for seat-back measurements, the dominant axis varies between X and Y. Exposure action value (EAV) based on RMS has exceeded the threshold value of 0.5 m/s2 for all the dumpers during loaded travel and empty travel for seat-surface as well as for seat-back measurements.

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Authors and Affiliations

  1. Department of Mining Engineering, NITK, Surathkal, India

    Sandeep Kumar Jeripotula, Aruna Manglapady & Govinda Raj Mandela

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  1. Sandeep Kumar Jeripotula
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  2. Aruna Manglapady
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  3. Govinda Raj Mandela
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Correspondence to Sandeep Kumar Jeripotula.

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Jeripotula, S.K., Manglapady, A. & Mandela, G.R. Evaluation of Whole Body Vibration (WBV) of Dumper Operators Based on Job Cycle. Mining, Metallurgy & Exploration 37, 761–772 (2020). https://doi.org/10.1007/s42461-019-00140-5

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