شبیه‌سازی پیامد ناشی از آتش‌سوزی برای خط لوله گاز با استفاده از نرم‌افزار PHAST

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد مهندسی شیمی، واحد مرودشت، دانشگاه آزاد اسلامی، مرودشت، ایران

2 استادیار مهندسی شیمی، واحد مرودشت، دانشگاه آزاد اسلامی، مرودشت، ایران

چکیده

خطوط لوله، یکی از مهم‌ترین ابزار انتقال گاز است. ایجاد نشتی در خطوط انتقال گاز، باعث خسارت‌های مالی و جانی می‌شود؛ از همین رو دست‌یابی به اطلاعاتی مانند حد اکثر شعاع ایمن آتش، انفجار و نشت مواد بسیار ارزشمند است و در مقابله با حوادث در شرایط اضطراری نقش مهمی را می‌تواند بازی کند. در این پژوهش، حریم ایمن برای خط لولۀ گاز 42 اینچ با استفاده از نرم‌افزار PHAST ورژن 7.11 مطالعه شد. بیشترین میزان تشعشع مربوط به حالت افقی و کمترین میزان تشعشع مربوط به حالت عمودی است؛ جهت عمودی کمترین مسافت تشعشع از منبع انتشار را دارد، در حالی که جهت افقی با زاویۀ 45 درجه، بیشترین مسافت تشعشع از منبع انتشار را نشان می‌دهد. نتایج شبیه‌سازی پیامد کمترین تشعشع را برای محیط‌های تحت فشار و خطرناک‌ترین تشعشع را برای مناطق خطر نشان داد. برای نمونه، اگر نسبت قطر نشتی به قطر سوراخ مقدار 25/0 و حالت نشتی به‌صورت افقی باشد. حریم ایمن ناشی از آتش‌سوزی برای مناطق خطر، محیط‌های محصور و محیط‌های تحت فشار به‌ترتیب 850، 1070 و 1360 متر است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Simulation the Fire Consequence for a Gas Pipeline Using PHAST Software

نویسندگان [English]

  • H. Jahedshahraki 1
  • N. Esfandiari 2
1 M. Sc. Student of Chemical Engineering, Department of Chemical Engineering, Marvdasht Branch, Islamic Azad University, Marvasht, Iran
2 Assistan Professor of Chemical Engineering, Department of Chemical Engineering, Marvdasht Branch, Islamic Azad University, Marvasht, Iran
چکیده [English]

The use of pipelines is one of the most important methods of gas transmission. Leakage in gas transmission lines causes financial and life-threatening damages. For this reason, it is very valuable to obtain information such as maximum safe radius of fire, explosion and leakage of materials. This information can play an important role in dealing with accidents in emergencies. In this study, safe privacy for 42-inch gas pipeline was studied using PHAST software version 7.11. The highest amount of radiation is related to the horizontal state and the lowest amount of radiation is related to the vertical state. The vertical direction has the lowest radiation distance from the propagation source, while the horizontal direction at an angle of 45 degrees shows the highest radiation distance from the propagation source. Simulation results showed the lowest radiation outcome for pressurized environments and the most dangerous radiation for hazardous areas. For example, if the ratio of leakage diameter to hole diameter is 0.25 and leakage mode is horizontal. The safety privacy caused by fire for hazardous areas, enclosed environments and pressure environments is 850, 1070 and 1360 meters, respectively.

کلیدواژه‌ها [English]

  • Process Evaluation
  • Fire
  • Pipe Line
  • Simulation
  • PHAST software
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