Design, Construction and Evaluation of Local Exhaust Ventilation System for the Control of Total Dust and Crystalline Silica in a Tile Manufacturing Factory
<strong>Background:</strong> Crystalline silica is one of the compounds used in different industries. One of the industries in which this compound is used is the tile industry that can cause disabling lung disease. The purpose of this study was to reduce and eliminate workplace air pollu...
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2018-10-01
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doaj-41bffb93fcf74cacb8b1a525e39989812020-11-25T02:11:42ZengShiraz University of Medical SciencesJournal of Health Sciences and Surveillance System2345-22182345-38932018-10-016416517210.30476/jhsss.2019.83246.102046196Design, Construction and Evaluation of Local Exhaust Ventilation System for the Control of Total Dust and Crystalline Silica in a Tile Manufacturing FactoryAbdorreza Zarei0Mehdi Jahangiri1Alireza Koohpaei2Ahmad Zolfaghari3Abolfazl Barkhordari4Morteza Mortezavi Mehrizi5MSc in Occupational Health, Occupational Health Department, Health Faculty, Qom University of Medical Sciences, Yazd, IranAssistant Professor of Occupational Health, Department of Occupational Health, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran.Associate Professor in Occupational Health, Occupational Health Department, Health Faculty, Qom University of Medical Sciences, Qom, IranMSc in Occupational Health, Health & Medicine Department, PIHO (petroleum industry health organization), Isfahan, IranProfessor in Occupational Health, Occupational Health Department, Health Faculty, Yazd University of Medical Sciences, Yazd, IranPHD candidate, Occupational Health Department, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran,<strong>Background:</strong> Crystalline silica is one of the compounds used in different industries. One of the industries in which this compound is used is the tile industry that can cause disabling lung disease. The purpose of this study was to reduce and eliminate workplace air pollutants by Local Exhaust Ventilation system (LEVs).<br /> <strong>Methods:</strong> In this interventional-practical study, designing LEVs is accomplished according to the velocity pressure method balanced system design of the American Conference of Governmental Industrial Hygienists (ACGIH) and is performed in spray dryer hall in a tile factory. The studied population consisted of 22 workers selected randomly. After implementation, the LEVs efficiency was evaluated, both in terms of occupational health and fluid mechanics. In order to evaluate the system from the point of view of occupational health, the measurement of Crystalline silica, inhalable and total dust was done before and after installation of LEVs by the National Institute of Occupational Safety and Health (NIOSH) 7601, 0600 and open face methods, respectively; also, to evaluate the system as to fluid mechanics, we measured the velocity and flow rate in some hoods and ducts.<br /> <strong>Results:</strong> Results showed that the obtained mean values of total, inhalable and silica dust after installation of LEVs had a statistically significant difference before the use of LEVs (p<0.05); also, the efficiency of removing the mentioned pollutants was 66, 94 and 96%, respectively.<br /> <strong>Conclusion:</strong> The performance of the ventilation system was in accordance with the values obtained in the design.http://jhsss.sums.ac.ir/article_46196_3fe691108e776b23a8457cd32253f8bd.pdfventilationsilicadustair pollutionexposure |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abdorreza Zarei Mehdi Jahangiri Alireza Koohpaei Ahmad Zolfaghari Abolfazl Barkhordari Morteza Mortezavi Mehrizi |
spellingShingle |
Abdorreza Zarei Mehdi Jahangiri Alireza Koohpaei Ahmad Zolfaghari Abolfazl Barkhordari Morteza Mortezavi Mehrizi Design, Construction and Evaluation of Local Exhaust Ventilation System for the Control of Total Dust and Crystalline Silica in a Tile Manufacturing Factory Journal of Health Sciences and Surveillance System ventilation silica dust air pollution exposure |
author_facet |
Abdorreza Zarei Mehdi Jahangiri Alireza Koohpaei Ahmad Zolfaghari Abolfazl Barkhordari Morteza Mortezavi Mehrizi |
author_sort |
Abdorreza Zarei |
title |
Design, Construction and Evaluation of Local Exhaust Ventilation System for the Control of Total Dust and Crystalline Silica in a Tile Manufacturing Factory |
title_short |
Design, Construction and Evaluation of Local Exhaust Ventilation System for the Control of Total Dust and Crystalline Silica in a Tile Manufacturing Factory |
title_full |
Design, Construction and Evaluation of Local Exhaust Ventilation System for the Control of Total Dust and Crystalline Silica in a Tile Manufacturing Factory |
title_fullStr |
Design, Construction and Evaluation of Local Exhaust Ventilation System for the Control of Total Dust and Crystalline Silica in a Tile Manufacturing Factory |
title_full_unstemmed |
Design, Construction and Evaluation of Local Exhaust Ventilation System for the Control of Total Dust and Crystalline Silica in a Tile Manufacturing Factory |
title_sort |
design, construction and evaluation of local exhaust ventilation system for the control of total dust and crystalline silica in a tile manufacturing factory |
publisher |
Shiraz University of Medical Sciences |
series |
Journal of Health Sciences and Surveillance System |
issn |
2345-2218 2345-3893 |
publishDate |
2018-10-01 |
description |
<strong>Background:</strong> Crystalline silica is one of the compounds used in different industries. One of the industries in which this compound is used is the tile industry that can cause disabling lung disease. The purpose of this study was to reduce and eliminate workplace air pollutants by Local Exhaust Ventilation system (LEVs).<br /> <strong>Methods:</strong> In this interventional-practical study, designing LEVs is accomplished according to the velocity pressure method balanced system design of the American Conference of Governmental Industrial Hygienists (ACGIH) and is performed in spray dryer hall in a tile factory. The studied population consisted of 22 workers selected randomly. After implementation, the LEVs efficiency was evaluated, both in terms of occupational health and fluid mechanics. In order to evaluate the system from the point of view of occupational health, the measurement of Crystalline silica, inhalable and total dust was done before and after installation of LEVs by the National Institute of Occupational Safety and Health (NIOSH) 7601, 0600 and open face methods, respectively; also, to evaluate the system as to fluid mechanics, we measured the velocity and flow rate in some hoods and ducts.<br /> <strong>Results:</strong> Results showed that the obtained mean values of total, inhalable and silica dust after installation of LEVs had a statistically significant difference before the use of LEVs (p<0.05); also, the efficiency of removing the mentioned pollutants was 66, 94 and 96%, respectively.<br /> <strong>Conclusion:</strong> The performance of the ventilation system was in accordance with the values obtained in the design. |
topic |
ventilation silica dust air pollution exposure |
url |
http://jhsss.sums.ac.ir/article_46196_3fe691108e776b23a8457cd32253f8bd.pdf |
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