Modeling the Consequences of Methane Gas Expansion in a CNG Fuel Stations of Isfahan Province
Abstract Introduction: Assessment of the consequences of hazards such as fire and explosion is one of the most urgent and important steps to improve the level of safety in the current stations and those that are in the design process. The purpose of this study was to review the model of CNG Compress...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | fas |
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Shahid Sadoughi University of Medical Sciences
2021-01-01
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| Series: | بهداشت کار و ارتقای سلامت |
| Subjects: | |
| Online Access: | http://ohhp.ssu.ac.ir/article-1-238-en.html |
| _version_ | 1828951123815301120 |
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| author | Mahdieh Rastimehr Mahshid Bahrami ali karimi Reza Pourbabaki |
| author_facet | Mahdieh Rastimehr Mahshid Bahrami ali karimi Reza Pourbabaki |
| author_sort | Mahdieh Rastimehr |
| collection | DOAJ |
| description | Abstract
Introduction: Assessment of the consequences of hazards such as fire and explosion is one of the most urgent and important steps to improve the level of safety in the current stations and those that are in the design process. The purpose of this study was to review the model of CNG Compressed Natural Gas releases and the range of damages to individuals and equipment. Moreover, we examined the observance of safe distance of this station to its surroundings.
Materials and Methods: In this study, modeling the effects of fire and explosion on the CNG fuel station in Isfahan province was performed using ALOHA software. In this model, six scenarios were designed to create a hole with a diameter of 0.03m and a gap of 0.2m and width of 0.2 m in a pressure vessel.
Results: It was observed that the toxic atmosphere was within the distance of 55 meters at a concentration of 65000 ppm. In the case of a gap, the toxic vapor cloud range could increase to 66 meters. The flammable superpower range was 89meters for the hole but 107 meters for the gap. The thermal radiation from the jet fire to the distance of 25meters was 10 kw/sqm for the hole, but the thermal radiation was 10 kw/sqm for the gap to 35meters.
Conclusion: The most dangerous scenario was the Jet Fire, which involved not only the CNG station, but also the municipal parking area. Furthermore, the thermal radiation produced by the gap was greater than the hole with regard to the involved range. |
| first_indexed | 2024-12-14T06:33:29Z |
| format | Article |
| id | doaj.art-e98f79d9ab154fc7b14ec949842581f7 |
| institution | Directory Open Access Journal |
| issn | 2588-2643 2588-3062 |
| language | fas |
| last_indexed | 2024-12-14T06:33:29Z |
| publishDate | 2021-01-01 |
| publisher | Shahid Sadoughi University of Medical Sciences |
| record_format | Article |
| series | بهداشت کار و ارتقای سلامت |
| spelling | doaj.art-e98f79d9ab154fc7b14ec949842581f72022-12-21T23:13:26ZfasShahid Sadoughi University of Medical Sciencesبهداشت کار و ارتقای سلامت2588-26432588-30622021-01-0144337350Modeling the Consequences of Methane Gas Expansion in a CNG Fuel Stations of Isfahan ProvinceMahdieh Rastimehr0Mahshid Bahrami1ali karimi2Reza Pourbabaki3 Department of Occupational Health Engineering, School of health, Tehran University of medical sciences, Tehran, Iran Department of Occupational Health Engineering, School of health, Tehran University of medical sciences, Tehran, Iran Department of Occupational Health Engineering, School of Health, Tehran University of Medical Sciences, Tehran, Iran Department of Occupational Health Engineering, School of health, Tehran University of medical sciences, Tehran, Iran Abstract Introduction: Assessment of the consequences of hazards such as fire and explosion is one of the most urgent and important steps to improve the level of safety in the current stations and those that are in the design process. The purpose of this study was to review the model of CNG Compressed Natural Gas releases and the range of damages to individuals and equipment. Moreover, we examined the observance of safe distance of this station to its surroundings. Materials and Methods: In this study, modeling the effects of fire and explosion on the CNG fuel station in Isfahan province was performed using ALOHA software. In this model, six scenarios were designed to create a hole with a diameter of 0.03m and a gap of 0.2m and width of 0.2 m in a pressure vessel. Results: It was observed that the toxic atmosphere was within the distance of 55 meters at a concentration of 65000 ppm. In the case of a gap, the toxic vapor cloud range could increase to 66 meters. The flammable superpower range was 89meters for the hole but 107 meters for the gap. The thermal radiation from the jet fire to the distance of 25meters was 10 kw/sqm for the hole, but the thermal radiation was 10 kw/sqm for the gap to 35meters. Conclusion: The most dangerous scenario was the Jet Fire, which involved not only the CNG station, but also the municipal parking area. Furthermore, the thermal radiation produced by the gap was greater than the hole with regard to the involved range.http://ohhp.ssu.ac.ir/article-1-238-en.htmlcng fuelmethaneoutcome modelingaloha software |
| spellingShingle | Mahdieh Rastimehr Mahshid Bahrami ali karimi Reza Pourbabaki Modeling the Consequences of Methane Gas Expansion in a CNG Fuel Stations of Isfahan Province بهداشت کار و ارتقای سلامت cng fuel methane outcome modeling aloha software |
| title | Modeling the Consequences of Methane Gas Expansion in a CNG Fuel Stations of Isfahan Province |
| title_full | Modeling the Consequences of Methane Gas Expansion in a CNG Fuel Stations of Isfahan Province |
| title_fullStr | Modeling the Consequences of Methane Gas Expansion in a CNG Fuel Stations of Isfahan Province |
| title_full_unstemmed | Modeling the Consequences of Methane Gas Expansion in a CNG Fuel Stations of Isfahan Province |
| title_short | Modeling the Consequences of Methane Gas Expansion in a CNG Fuel Stations of Isfahan Province |
| title_sort | modeling the consequences of methane gas expansion in a cng fuel stations of isfahan province |
| topic | cng fuel methane outcome modeling aloha software |
| url | http://ohhp.ssu.ac.ir/article-1-238-en.html |
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