城镇燃气管网完整性管理体系研究与实践

Integrity management system of gas distribution pipeline:Research and practices

城镇燃气管网输送介质具有高压、易燃、易爆的特点,并且大多数都位于人口密集的区域,一旦发生泄漏,则后果相当严重。为了提高城镇燃气管网的安全运行水平,通过对国外相关法规标准开展调研与适用性分析,借鉴国内外天然气长输管道完整性管理所取得的成功经验,分析了城镇燃气管网与天然气长输管道的共性和差异性,由此确定了城镇燃气管网完整性管理的体系结构和主要内容,并基于中国石油天然气股份有限公司完整性管理体系建设实践的成果,开展了体系验证和改进。研究结果表明:①完整性管理是保障燃气管网安全运行的有效手段;②城镇燃气管网完整性管理主要包括数据采集与管理、风险评价、泄漏管理、检测与评价、维修维护、考核与效能评价等6个关键环节;③城镇燃气管网完整性管理工作的落实需要法规标准、体系文件、支持技术、系统平台和组织机构等5个支持要素;④应根据不同的压力等级来确定完整性管理工作的重点;⑤完整性管理体系文件应纳入到QHSE体系,将数据管理作为体系文件建设的重要环节,将体系文件内容固化到信息系统;⑥应对完整性管理体系进行持续改进。结论认为,该研究成果可以为城镇燃气企业开展完整性管理工作提供借鉴和参考。

Most gas distribution pipeline are located in densely populated areas and their transmission mediums are characterized by high pressure,combustibility and explosiveness,so the consequences will be quite serious once pipeline leakage happens.In order to improve the safety operation level of gas distribution pipeline,this paper carried out investigation and applicability analysis on foreign relevant laws,regulations and standards.Then,by referring to domestic and foreign successful experience in the integrity management of gas transmission,the similarities and differences between gas distribution pipeline and gas transmission were analyzed and accordingly the system structure and main content of the integrity management of gas distribution pipeline were determined.Finally,based on PetroChina’s achievements in the construction practice of integrity management system,the system was verified and improved.And the following research results were obtained.First,integrity management is an effective means to ensure the safe operation of gas distribution pipeline.Second,the integrity management of gas distribution pipeline mainly includes six key links,i.e.,data acquisition&management,risk assessment,leakage management,detection&evaluation,repair&maintenance,and check&efficiency evaluation.Third,the implementation of the integrity management of gas distribution pipeline needs five support elements,including laws,regulations&standards,system documents,support technologies,system platforms and organizations.Fourth,the focuses of the integrity management shall be determined according to pressure grades.Fifth,it is recommended to embed the system documents of integrity management into the QHSE system,take the data management as the important link of system document construction and include the content of system documents into the information system.Sixth,the integrity management system shall be improved continuously.In conclusion,the research results can provide reference for the implementation of the integrity management in urban gas enterprises.