Evaluation of Ventilation Performance Parameters for an On-Gun Welding Prototype
Reported exposures to hazardous fumes and gases from the welding process indicate the importance of using effective ventilation systems to control these emissions. This study was designated to control the welding contaminants and to utilize the performance of a prototype on-gun system in bench scal...
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Tehran University of Medical Sciences
2018-08-01
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doaj-3dbcc3c92688433c97dbe7689d4fc4bf2020-12-07T08:46:05ZengTehran University of Medical SciencesInternational Journal of Occupational Hygiene2008-51092008-54352018-08-01103Evaluation of Ventilation Performance Parameters for an On-Gun Welding PrototypeRASOUL YARAHMADI0MITRA RASHIDI1ALIREZA ALIPOOR2PARVIN MORIDI3Occupational Health Research Center, Department of Occupational Health, School of public Health, Iran University of medical sciences, Tehran, IranM.Sc. Student, in Occupational Health, Tehran University of Medical Sciences, Tehran, IranAssistant Professor of Mechanical Engineering, Sahid Chamran Ahvaz University, Ahvaz, IranAir Pollution Research Core, Pars Plasma Bonyan (knowledge based Co), Tehran, Iran. Reported exposures to hazardous fumes and gases from the welding process indicate the importance of using effective ventilation systems to control these emissions. This study was designated to control the welding contaminants and to utilize the performance of a prototype on-gun system in bench scale. The study evaluated ventilation parameters including exhaust flow rate, capture velocity, and lastly, duct and face velocities for the system of interest. Hood operation was tested at 34.06 standard cubic feet per minute (SCFM). ISO 10882-1 (part 1) method, the gravimetric method, was used to determine the total particle concentration and hood efficiency. The study found that, in general, when the hood face was located at 2 cm from the gas nozzle, capture velocity in arc point reached 140 fpm. By increasing the distance to 4-6 cm, the capture velocity decreased to 100 and 60 fpm, respectively. We concluded that the distance of the hood face from nozzle had a direct effect on capture efficiency. The evaluated hood could reduce exposure risk of welding fumes with a capture efficiency of 77.73% in the hood distance of 2 cm from the nozzle. https://ijoh.tums.ac.ir/index.php/ijoh/article/view/382Exhaust hoodFume exhaust gunIndustrial ventilationon gun weldingwelding fume |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
RASOUL YARAHMADI MITRA RASHIDI ALIREZA ALIPOOR PARVIN MORIDI |
spellingShingle |
RASOUL YARAHMADI MITRA RASHIDI ALIREZA ALIPOOR PARVIN MORIDI Evaluation of Ventilation Performance Parameters for an On-Gun Welding Prototype International Journal of Occupational Hygiene Exhaust hood Fume exhaust gun Industrial ventilation on gun welding welding fume |
author_facet |
RASOUL YARAHMADI MITRA RASHIDI ALIREZA ALIPOOR PARVIN MORIDI |
author_sort |
RASOUL YARAHMADI |
title |
Evaluation of Ventilation Performance Parameters for an On-Gun Welding Prototype |
title_short |
Evaluation of Ventilation Performance Parameters for an On-Gun Welding Prototype |
title_full |
Evaluation of Ventilation Performance Parameters for an On-Gun Welding Prototype |
title_fullStr |
Evaluation of Ventilation Performance Parameters for an On-Gun Welding Prototype |
title_full_unstemmed |
Evaluation of Ventilation Performance Parameters for an On-Gun Welding Prototype |
title_sort |
evaluation of ventilation performance parameters for an on-gun welding prototype |
publisher |
Tehran University of Medical Sciences |
series |
International Journal of Occupational Hygiene |
issn |
2008-5109 2008-5435 |
publishDate |
2018-08-01 |
description |
Reported exposures to hazardous fumes and gases from the welding process indicate the importance of using effective ventilation systems to control these emissions. This study was designated to control the welding contaminants and to utilize the performance of a prototype on-gun system in bench scale. The study evaluated ventilation parameters including exhaust flow rate, capture velocity, and lastly, duct and face velocities for the system of interest. Hood operation was tested at 34.06 standard cubic feet per minute (SCFM). ISO 10882-1 (part 1) method, the gravimetric method, was used to determine the total particle concentration and hood efficiency. The study found that, in general, when the hood face was located at 2 cm from the gas nozzle, capture velocity in arc point reached 140 fpm. By increasing the distance to 4-6 cm, the capture velocity decreased to 100 and 60 fpm, respectively. We concluded that the distance of the hood face from nozzle had a direct effect on capture efficiency. The evaluated hood could reduce exposure risk of welding fumes with a capture efficiency of 77.73% in the hood distance of 2 cm from the nozzle.
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topic |
Exhaust hood Fume exhaust gun Industrial ventilation on gun welding welding fume |
url |
https://ijoh.tums.ac.ir/index.php/ijoh/article/view/382 |
work_keys_str_mv |
AT rasoulyarahmadi evaluationofventilationperformanceparametersforanongunweldingprototype AT mitrarashidi evaluationofventilationperformanceparametersforanongunweldingprototype AT alirezaalipoor evaluationofventilationperformanceparametersforanongunweldingprototype AT parvinmoridi evaluationofventilationperformanceparametersforanongunweldingprototype |
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