喷射火工况下系统存活性量化分析及计算
System Survivability Quantitative Analysis and Calculation in Jet Fire
浏览(1716) 下载(8)
- 引用格式:
-
肖芳,余洋,董勇,王楚琦,陈俊文,赵伟.喷射火工况下系统存活性量化分析及计算[J].天然气与石油,2018,36(5):0.doi:
Xiao Fang, Yu Yang, Dong Yong, Wang Chuqi, Chen Junwe, Zhao Wei.System Survivability Quantitative Analysis and Calculation in Jet Fire[J].Natural Gas and Oil,2018,36(5):0.doi:
- DOI:
- 作者:
- 肖 芳1 余 洋1 董 勇1 王楚琦1 陈俊文1 赵 伟2
Xiao Fang1, Yu Yang1, Dong Yong1, Wang Chuqi1, Chen Junwe1, Zhao Wei2
- 作者单位:
- 1. 中国石油工程建设有限公司西南分公司,2. 四川石达能源发展有限公司
1. China Petroleum Engineering & Construction Corp. Southwest Company；2. Sichuan Shida Energy Development Limited Company
- 关键词:
- 喷射火;量化分析;热辐射;紧急泄放速率;存活性计算
Jet fire；Quantitive analysis；Thermal radiation；Emergency depressurization rate；Survivability calculation
- 摘要:
- 站场工艺安全设计过程中针对火灾工况下紧急泄放,常规做法是采用API Std 521标准经验示例,即紧急泄放要求为15 min内系统压力下降到690 kPa或者系统设计压力的50 ‰,但该方法仅仅是材料为ASTM A515 Grade 70,壁厚为25.4 mm的碳钢容器系统示例。如果系统内壁厚小于25.4 mm,则需要更快的紧急泄放速率。为提高管道系统火灾工况下存活性(Survivability)的认识,参考API Std 521标准并结合Scandpower导则等文献,从标准释义的源头并结合国外项目的具体做法,总结和探讨火灾工况尤其是喷射火工况下,系统存活性量化分析及计算方法,并且通过算例加以说明。本文的研究以及形成的分析计算方法，对工艺系统喷射火(Jet Fire)工况的安全设计提供了确切的参考。
The most common criteria for the emergency blowdown and depressurizing against fire case in facility safety design is API Std 521, which indicates that it is necessary to reduce pressure to 690 kPa or half of design pressure in 15min for ASTM A515 Grade 70 system with wall thickness equal or greater than 25.4mm only, while faster depressurization rate is required for wall thickness less than that. In order to strengthen the recognition of survivability in fire, the method and steps of survivability quantitative analysis and calculation for fire case especially jet fire are studied and summarized according to API Std 521 and guidelines of Scandpower and methods applied in oversea project, which provides reference for facility safety design under jet fire.
