风险评估法在川西集输管道的应用分析

Application of Risk Assessment to Gas Gathering Pipelines in Western Sichuan Gasfield

针对川西气田集输管道所经位置人口稠密、经济活跃致使管道检测成本较高且检测周期长等问题,以川西气田3条主要集输管道为例,利用Muhlbauer风险分析法进行风险评价。介绍了Muhlbauer风险分析法的基本原理及5个方面的评价方法。通过对管道的风险评估,描述了管道的运行现状,调整了破坏因素的风险权重,定量分析了各管道的相对风险值,结果显示3条管道虽均存在一定风险,但目前的风险值可被接受,建议可通过加强管理和完善防护措施,在控制成本的前提下提高管道的相对风险值,使管道安全性提高7.1%左右。

Gas gathering pipelines in western Sichuan gasfield pass through some areas with dense population and active economy,which may result in high cost to detect pipelines and long test period. Taking three gas pipelines from this field as examples, this study carried out a risk assessment by means of a method called Muhlbauer risk analysis. In addition, for this method, the basic principles and its evaluation were illustrated. Through the risk assessment on these pipelines, their running status was presented,risk weight of destructive factors was adjusted, relative risk value was analyzed. Results show they have a certain risk but at an acceptable value. Some suggestions are also made, including, to strengthen management, to perfect protective measures, and to increase relative risk value under cost control, all making pipeline safety increased by 7.1% or so.