Noise Characteristics of Pumps at Tehran’s Oil Refinery and Control Module Design: Noise Control Module Design

M. R. Monazzam; R. Golmohammadi; M. Nourollahi; A. Nezafat

Authors

M. R. Monazzam Occ. Hyg. Deptt., School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
R. Golmohammadi Occ. Hyg. Deptt., School of Public Health and Center for Health Research, Hamadan University of Medical Sciences, P.O. Box 4171, Hamadan, Iran
M. Nourollahi Occ. Hyg. Deptt., School of Public Health and Center for Health Research, Hamadan University of Medical Sciences, P.O. Box 4171, Hamadan, Iran
A. Nezafat Occ. Hyg. Deptt., School of Public Health and Center for Health Research, Hamadan University of Medical Sciences, P.O. Box 4171, Hamadan, Iran

Keywords:

pump noise, noise pollution, noise exposure

Abstract

Considering industrial excessive noise exposure, sound pressure level of 4 pumps with different applications installed in Isomax Unit of Oil Refinery Centre of Tehran, Iran was studied. The A-weighted sound pressure level and maximum sound pressure level showed that the emitted noise is far above the permissible limits. Installing enclosure around the noise source was found to be the best noise control measure. Results of operational calculating transmission loss of the designed module with a sandwich layer showed that it is possible to provide 19.7 dB (A) reduction in overall sound pressure level and 20 dB reduction in dominant frequency. Designing the module with given specifications and probable leak estimation and prevention gives remarkable and effective results in the studied field.

Noise Characteristics of Pumps at Tehran’s Oil Refinery and Control Module Design

Noise Control Module Design

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Abstract

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