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Oluranti Adetunji Abiola
Adekola Olayinka Oke
Olufemi Adebola Koya
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Adekola Olayinka Oke
Olufemi Adebola Koya
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International Journal of Safety and Industrial Ergonomics

Safe work-impulse chart for roadside auto-mechanics

Oluranti Adetunji Abiola, Adekola Olayinka Oke, Olufemi Adebola Koya

Department of Mechanical Engineering, Obafemi Awolowo University, Ile-Ife, 22005, Nigeria.

Accepted 27 May, 2016.

Citation: Abiola OA, Oke AO, Koya OA (2016). Safe work-impulse chart for roadside auto-mechanics. International Journal of Safety and Industrial Ergonomics, 1(1): 002-009.

Copyright: © 2016 Abiola et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Abstract

The work evaluates the response of the heart rate of non-mechanics handling some specific loads in the common postures employed during road-side repair of automobile and later, the result was validated with the auto-mechanics during repair activities. The purpose is to specify the safe work-impulse of auto-mechanics in the common postures, such as, bending, stooping and supine posture, used during roadside repair. The safe work-impulse was determined for preselected healthy non-mechanics of the classified age groups who gave informed consent. Increase in heart rates at exhaustion of non-mechanics in each age group, in lifting predetermined loads were measured using digital premium pressure monitor with a comfit cuff. Consequently, the work-impulse charts for the load classifications and different age-groups were developed for the different postures. The heart rates of the auto-mechanics performing specific tasks during engine repairs were then measured to determine the equivalent work-impulse, using the developed charts. The result revealed that, auto-mechanics handling the same mass of load under the same conditions have lower safe work-impulse. In conclusion, the study reveals that roadside auto-mechanics have the capacity to sustain higher safe work-impulse in bending and supine postures than in stooping posture.

Key words: Heart rate, auto-mechanic, repair, posture, automobile, work-impulse.