Volume 7, Issue 6 (2-2012)
J Health Syst Res 2012, 7(6): 0-0 |
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رستم گلمحمدي, حيدر محمدي, هادي بيات, عليرضا سلطانيان. ارزیابی و کنترل آلودگی صدای مولدهای دیزلی برق جوشکاری در کارگاههای ساختمانسازی شهر همدان. J Health Syst Res 2012; 7 (6)
URL: http://hsr.mui.ac.ir/article-1-344-en.html
URL: http://hsr.mui.ac.ir/article-1-344-en.html
1- Associate Professor, Department of Professional Health Engineering, School of Health And Health Sciences Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
2- MSc Student, Department of Professional Health Engineering, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
3- MSc Student, Department of Occupational Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamedan, Iran
4- Assistant Professor, Department of Biostatistics, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
2- MSc Student, Department of Professional Health Engineering, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
3- MSc Student, Department of Occupational Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamedan, Iran
4- Assistant Professor, Department of Biostatistics, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
Abstract: (1066 Views)
Background and Aims: Since using city power for welding process is not allowed, diesel generators are used as a power supply in construction industries. They could be introduced as a main source of noise pollution. The purposes of this study were to assess and control noise pollution produced by construction diesel generators in Hamadan, Iran.Methods: In this descriptive, cross-sectional study, sound pressure level (SPL) was measured in 4 points at a distance of 1 meter from a diesel generator. Frequency analysis was also conducted for stations with SPLs higher than the standard limit. The noise disturbance questionnaire was then used to investigate noise disturbance among neighbors. Appropriate mufflers were designed to reduce SPL based on the objectives of the study. Finally, data was analyzed by SPSS13.Findings: Our results showed that the mean values of SPL around the generators and on the nearby streets were 97.0 ± 2.2 and 74.0 ± 7.4 dB(A), respectively. These values both exceeded the recommended levels. Overall, 60.7% of the neighbors were disturbed by the noise from construction activities. Using the designed muffler in the Benz model, SPL reduction at 63 Hz was 24.4 dB and total reduction was 11 dB. The corresponding values were 21.2 and 9.5 dB in the Romania model.Conclusion: Exhaust system was a main source of noise in diesel generators. Therefore, appropriate mufflers would reduce noise pollution.
Type of Study: Research |
Subject:
education health and promotion
Received: 2020/07/16 | Accepted: 2023/03/4 | Published: 2023/03/4
Received: 2020/07/16 | Accepted: 2023/03/4 | Published: 2023/03/4
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