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Modeling the Consequences of Benzene Leakage from Tank using ALOHA in Tar Refining Industrial of Kerman, Iran | ||
| Pollution | ||
| دوره 7، شماره 1، فروردین 2021، صفحه 217-230 اصل مقاله (1.31 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2020.309283.887 | ||
| نویسندگان | ||
| S. Shojaee Barjoee* 1؛ M. Nikbakht2؛ E. Malverdi1؛ S. Zarei Mahmoud Abadi3؛ M. R. Naghdi4 | ||
| 1Department of Environmental, School of Natural Resources and Desert Studies, Yazd University, Yazd, Iran | ||
| 2Department of Environmental Management and Planning, Graduate Faculty of Environment, Tehran University, Tehran, Iran | ||
| 3Department of Environmental, School of Natural Resources, Payame Noor University, Tehran, Iran | ||
| 4Department of Arid and Desert Regions Management, School of Natural Resources and Desert Studies, Yazd University, Yazd, Iran | ||
| چکیده | ||
| The emission and dispersion of pollutants from the tanks of coking and tar refining industries in the environment is always probable. This study aimed to evaluate the hazard radius of benzene release from the tank of one of the coking and tar refining industries. Areal Location of Hazardouse Atmosphere (ALOHA) model Version 5.4.7 was used to predict the hazard radius of leakage and dispersion of benzene from a tank in different seasons. The maps of the toxic and flammable vapor cloud of benzene, evaporation rate from puddle and the concentration of toxic and flammable vapor cloud inside and outside of the office building were prepared. The results indicated that the maximum average benzene released from the tank was 282 Kg/min and the total amount of benzene leakage was 11997 kg in 60 min in summer. The maximum diameter of the created evaporating puddle was 71 m in autumn. The maximum toxic and flammable concentrations of benzene inside an office building were 772 and 936 ppm, respectively whilethey were 3720 and 3540 ppm outside a building in autumn. Based on the Acute Exposure Guideline Levels (AEGL) and Lower Explosive Limit (LEL) criterias, the maximum hazard radius was 1200 and 200 m in autumn. The toxic vapor cloud of benzene covered some parts of the adjacent coking plant. However, the boundaries of the flammable vapor cloud failed to reach the adjacent industries. The scenario of this study is safe for the adjacent residents and unsafe for the personnel. Thus, presenting a strategy to deal with this process incident is essential. | ||
| کلیدواژهها | ||
| AEGL and LEL criterias؛ evaporation puddle؛ process accidents؛ threat zone؛ toxic and flammable vapor cloud | ||
| مراجع | ||
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