Evaluation the Extent of Explosion, Ignition and Gas Leakage Consequences in Cylinders Containing 26.2-Liters of Liquid Gas, with Passive Defense Approach
Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Background And Aim
Knowing the maximum radius of fire, explosion and emission of toxic gases, can play a very important role in the operationalization of urban passive defense requirements in order to reduce vulnerability in accidents. The main objective of this study is modeling the extent of explosion, ignition and gas leakage Consequences in cylinders containing 26.2-liters of liquid gas, with passive defense approach.
Methods
In this study, the effective factors on discharge and release of gases are described and ALOHA software has been used as one of the most suitable software for modeling the gas emissions of LPG (Liquefied Petroleum Gas) cylinders. Based on the modeling results, the emergency response program during gas leakage is presented.
Results
When the gas leaks from LPG cylinder with 1-inch vent valve, the cylinder will be empty in one minute and the gas concentration will be 12600 ppm (60% LEL) and 2100 ppm (10% LEL) up to 11 meters and 35 meters from cylinder, respectively. In the case of vapor cloud explosion, the explosive wave pressure will be about 3.5 psi, up to 13 meters from the reservoir which may cause serious damage, and it will be equal to 1 psi, up to 25 meters from the cylinder which has strength of breaking the glass. In case of furious fire, fire flame with eight meters’ length is created, with thermal radiation of about 10 Kw/m2 and 5 Kw/m2 up to 10 meters and 12 meters from the cylinder, respectively which can cause second-degree burns. In the event of BELIEVE, a fireball will occur with a diameter of 14 meters within 2 seconds, with thermal radiation of about 10 Kw/m2 up to 53 meters from the cylinder.
Conclusion
The consequences of flaring and explosion of LPG gas, up to 35 meters from cylinder, are the most serious threat for human health, if gas leaks from a cylinder. Optimal positioning of gas cylinders will have an important role in limiting the harmful effects of hazardous emissions in military barracks.
Language:
Persian
Published:
Journal of Military Medicine, Volume:19 Issue: 6, 2018
Pages:
551 to 561
magiran.com/p1796291  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!