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 ORIGINAL ARTICLE
Year : 2006  |  Volume : 10  |  Issue : 3  |  Page : 133-139

Assessment of noise level of a medium scale thermal power plant


Environmental Monitoring Division, Industrial Toxicology Research Centre, MG Marg, Post Box No. 80, Lucknow - 226 001, UP, India

Correspondence Address:
G C Kisku
Environmental Monitoring Division, Industrial Toxicology Research Centre, MG Marg, Post Box No. 80, Lucknow - 226 001, UP
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5278.29575

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Noise monitoring using "Cirrus sound level" was carried out for 30 min at a height of 1.5 m and 1 m away from the chest during October, 2002 covering 73 locations of ~781 MW power plant. Event Leq and LN cycle were studied to identify the noisy machines and to generate baseline data. Lowest avg. noise 70.37 dB(A) was found at control room while the highest avg, 95.91 dB(A) at F. D. Fan with average 88.04 6.08 dB(A). Compressors generate second highest noise, 89.98 dB(A). Operators of F.D. Fans are having a fare chance of exposure with >90 dB(A) i.e., beyond the prescribed standard. Noise may not jeopardize employee's life immediately but might be the cause of neurobehavioral change, psychological stress and unhappiness in daily life without showing the symptoms of chronic /acute diseases. Measured data has been compared with TLV of American Conference of Governmental Industrial Hygienists. The quality of life of industrial worker is one of the prime factors for production; hence it should not be neglected. Revision of occupational Indian noise standard is recommended at par with International / European standards. Noise-reducing options are also described. This investigation may help the implementing authority to adopt better policy for better work environment.






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