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You are here: Home » Past Issues » Volume 4, 2009 - Number 2 » A STUDY UPON OCCUPATIONAL NOISE POLLUTION EXPOSURE AT A METALLIC CONFECTIONS PLANT


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Ana Picu
"Dunarea de Jos" University, Domneasca Str. 47, Galati, Romania, e-mail: mihaelapicu@yahoo.com

A STUDY UPON OCCUPATIONAL NOISE POLLUTION EXPOSURE AT A METALLIC CONFECTIONS PLANT

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Abstract: Because of physical and psychological effects, hearing damage, in the main concern of safety regulations, should not be neglected. There are provable psychological reactions (strain, anger) and physical reactions (increased of blood pressure), which may give rise to long-time disorders. To obtain an accurate evaluation of the noise exposure of the workers, besides the sound level measurements were made noise dose determinations in order to estimate the noise dose indoor but also outdoor. In order to determine the framing inside the law limits sound levels and the doses inside and outside a metallic confections plant hall were measured. Data Logging Sound Meter 840013 was used to determine the noise level and the data was processed with SE 322 and a Personal Noise Dosimeter to determine the noise dose and the data was processed dBLink3. Regarding the sound level, it was seen that inside plant hall, the legal limits of 70dB were exceeded by 20.3dB, and outside, near the plant hall, they were higher by 2.8dB. The values of these sound levels go down with the distances increase, so at 20m from the plant hall, the values are between the normal limits. The measured doses were 528% of the accepted level (indoor for 4h of measurements), while the estimated dose for 8 hours is 951% and respectively 265% of the accepted level (outdoor for 4h of measurements) while the estimated dose for 8 hours is 480%. After these measurements were proposed a soundproofing of the hall and also the use of the earplugs by workers and installed wood panels between work teams, so that the workers would not hear noise except when they produce it themselves (and not by other work fellows).

Keyword: noise pollution, safety regulations, occupational exposure levels, noise dose


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