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[1]闫春兰,路美红,杨威,等.天然气管道改线动火作业与置换投产[J].油气储运,2011,30(10):797-799..[doi:10.6047/j.issn.1000-8241.2011.10.025]
　Yan Chunlan,Lu Meihong,Yang Wei,et al.Displacement and fire work in the route change of a natural gas pipeline[J].Oil & Gas Storage and Transportation,2011,30(10):797-799..[doi:10.6047/j.issn.1000-8241.2011.10.025]
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天然气管道改线动火作业与置换投产

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 30 期数: 2011年10期 页码: 797-799. 栏目: 出版日期: 2011-10-25
Title:
Displacement and fire work in the route change of a natural gas pipeline
文章编号:
1000-8241（2011）10-0797-03
作者:
闫春兰1; 路美红1; 杨威2; 吴锋1; 董博3
1.中国石油管道公司中原输油气分公司，山东德州 253020；
2.中国石油天然气管道局第四工程公司，河北廊坊 065000；
3.中国石油天然气股份有限公司管道建设项目经理部，北京 100101
Author(s):
Yan Chunlan; Lu Meihong; Yang Wei; et al
Yan Chunlan：Zhongyuan Gas Transmission Company，Dezhou，Shandong，253020.
关键词:
输气管道; 换管; 置换; 动火; 投产
Keywords:
natural gas transmission pipeline; pipe replacement; displacement; fire work and commissioning
分类号:
TE867
DOI:
10.6047/j.issn.1000-8241.2011.10.025
文献标志码:
A
摘要:
中沧输气管道因服役年限较长，部分管道发生严重腐蚀。通过天然气管道改线置换对部分管段进行换管和增加埋深改造，为不影响下游用户用气，工程采用一级动火作业。描述了动火作业的方案设计和操作步骤。从阀门和仪表的调试、氮气置换、故障预测与处理、天然气置换、严密性试验等方面介绍了置换投产过程。严重腐蚀管段经过改造，阀门内外漏现象得到改善，管道阴极保护率明显提高，可为同类工程施工提供参考。
Abstract:
Due to the long service period，serious corrosion was found in the part of pipeline in Zhongyuan Oilfield-Cangzhou Gas
Transmission Pipeline.The corroded pipe sections were repaired by the route change.In order to ensure the gas supply to
the downstream users，the project of route change was carried out based on Class-I hot work requirement.Scenario design，
considerations and work steps in the fire work are described.The work in the displacement commissioning is introduced
from the test of valve and instrument，nitrogen displacement，safety measures，failure prediction and treatment，natural gas
displacement，leakage testing，etc..In the route change project，several pipeline sections with serious corrosion were repaired，
inner and/or outer leakage of valves was eliminated and the cathodic protection ratio was increased obviously.It is considered
that the practice in the route change can provide an important guidance to the same kind of project in the displacement and hot
work of gas pipeline.

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备注/Memo

闫春兰，1973 年生，助理工程师，1995 年毕业于中国石油天然气管道局管道职工学院仪表自动化专业，现主要从事长输管
道生产技术管理工作。电话：0534-2656334；Email：clyan@petrochina.com.cn

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