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Polo publishing - Volume 1, Number 1 INTERNATIONAL JOURNAL...

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1,4 Faculty and Research Scholar in Department of Industrial & Production Engineering, Dr B R Ambedkar National Institute of Technology Jalandhar, Punjab, (India). 2 Professors in Department of Industrial & Production Engineering, Dr B R Ambedkar National Institute of Technology Jalandhar, Punjab, (India). 3 Professor and in charge of Autonomic Functions Lab in Department of Physiology, All India Institute of Medical Science, New Delhi, (India). Occupational noise and hearing conservation of industrial workers in casting, forging industry in Northern India L.P. Singh 1 , A. Bhardwaj 2 , K.K. Deepak 3 , and S. Singh 4 Abstract— The present study was undertaken to assess the noise exposure and occupational safety and hygiene practices in forging and casting units (SMEs) of Northern India. Both type of industry included high noise processes, main sources of noise in hot forging industry is drop forge hammers, oil fired furnace, pedestal fans, punching and blanking presses, grinding processes, barrelling processes where as in casting units the main sources of noise are machine moulding, grinding and other finishing processes. The study included a personal interview of workers of these units through a comprehensive questionnaire. Information was gathered about the noise exposure in years, use of protective equipments, and awareness about noise induced hearing loss (NIHL). The ambient noise was measured using Quest sound level meter. A long term recording was done in each section then followed by the short term recoding for 15 minutes each. Ambience Noise at various sections was found to be > 90dB (A) permissible limits. Pure tone audiometry was conducted in a portable audiometric room on 60 male workers with age 30-35 yrs and experience 7-12 years, selected from various sections of casting and forging processes. Workers engaged in forging and grinding sections are more prone to NIHL. There is moderate to severe loss of hearing threshold (dB) in at higher frequencies however minor to moderate loss at lower frequencies. The workers of other sections were found with minor loss of hearing threshold at these frequencies. Study recommended that there is a great need that; small and medium enterprises (SMEs) should be encouraged to implement occupational noise management and hearing conservation programmes. Keywords occupational hazards, occupational health, NIHL in SMEs. I. INTRODUCTION AND LITERATURE SURVEY ANY of the developing countries like India are far- behind in implementing occupational hygiene and pollution control measures at work sites. Occupational health and safety have not been at top agenda of small scale manufacturing industry in these countries. India is a population intensive country; the labour available is cheap and illiterate, proper occupational hygiene practices are generally ignored at workplaces. Personal protective equipments (PPE) for the workers are treated as luxury rather than necessity and are not sufficiently provided. The
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This note was uploaded on 04/02/2011 for the course INE 26 taught by Professor Todon during the Spring '11 term at Capri College.

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Polo publishing - Volume 1, Number 1 INTERNATIONAL JOURNAL...

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