西气东输泗阳站阀室放空安全分析
Analysis on Safety of Valve Vault Gas Venting at Siyang Station in West-East Gas Pipeline
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- 引用格式:
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陈利琼,李攀,刘博,李南.西气东输泗阳站阀室放空安全分析[J].天然气与石油,2015,33(2):0.doi:
Chen Liqiong; Li Pan, Liu Bo, Li Nan.Analysis on Safety of Valve Vault Gas Venting at Siyang Station in West-East Gas Pipeline[J].Natural Gas and Oil,2015,33(2):0.doi:
- DOI:
- 作者:
- 陈利琼1 李 攀2 刘 博2 李 南2
Chen Liqiong; Li Pan, Liu Bo, Li Nan
- 作者单位:
- 1. 西南石油大学“油气藏地质及开发工程国家重点实验室”,2. 西南石油大学石油与天然气工程学院
1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University;2.School of Petroleum and Natural Gas Engineering, Southwest Petroleum University
- 关键词:
- 天然气；放空火炬；模拟；热辐射强度
Natural gas; Flare system; Simulation; Heat radiant intensity
- 摘要:
- 天然气管道放空是管道进行维抢修及改扩建工程中必不可少的环节，但该环节本身存在危险因素。由于对冀宁联络线AH 030+36 m～AH 030+461 m段进行改线作业，要进行降压、放空、氮气置换和天然气置换等作业，现场选择泗阳站放空火炬点火放空。运用挪威船级社（DNV）开发的安全评估软件PHAST 6.53模拟此次计划放空时对周围站场、阀室和周围建筑的辐射热分布情况，以及其事故性放空时周围的热辐射情况，运用公式计算热辐射强度，将计算与模拟结果进行比较，得到其对站场设备、操作人员和周围人群的影响大小。最终得出结论：泗阳站此次计划性火炬放空对周围建筑和人群的危害在可接受范围内。但如果发生事故性放空，火炬产生的热辐射可能会对站场设备和工作人员造成危害。建议站场管理人员在发生事故放空时，特别关注站场设备和工作人员的安全。
Natural gas pipeline venting is an indispensable during pipeline repair, reconstruction and extension and risk factors exist in this process. In relocation of the section from AH030+36m to AH030+461m of Ji-Ning pipeline, such operation will be carried out as depressurization, gas venting, nitrogen replacement and natural gas replacement, flare system at Siyang station is determined for ignition and venting. The safety assessment software PHAST6.53 developed by DNV is applied to simulate radiant heat distribution around near the station, valve vaults, structures and buildings within and around the station during the planned venting process and relative formulas are applied to calculate heat radiation intensity. Analyzed and compared are calculation results with simulation ones and analysis results show that in normal circumstances, harm produced during the planned venting process at Siyang station will be within an acceptable range. However, in case of an accident, heat radiation produced from the venting will result in harm on equipment and personnel at Siyang station. It is suggested that more attention shall be paid to equipment and personnel at the station in case of an accident during the venting.
