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Model for Sizing HCA Associated with Natural Gas Pipeline

Qin Ling, Zhang Peng, Chen Liqiong, Peng Xingyun (Southwest Oil University, Chengdu, Shicuan, 610500, China) Chen Kang (Sichuan Petroleum Construction Engineering Co., Ltd., Chengdu, Shicuan, 610213, China)  
Severe consequences may result from failures in high-pressure natural gas pipelines. It is necessary to analyze high consequence areas in gas pipelines to mitigate effects of accidents. Accident tree analysis is applied to risk analysis and a mathematical model is established, including fire model, effective release rate model, heat intensity threshold and hazard area equation. Pipeline incident reports are reviewed and a basis is provided for evaluating the validity of the model by comparing the expected extent with actual one.
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