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首页> 外文会议>Proceedings of the ASME India oil and gas pipeline conference 2015 >'Internal Corrosion Monitoring System Selection for Cross Country Natural Gas Pipeline : A case Study of SHPPL'
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'Internal Corrosion Monitoring System Selection for Cross Country Natural Gas Pipeline : A case Study of SHPPL'

机译：“越野天然气管道内部腐蚀监测系统选择：以SHPPL为例”

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Reliance Gas Pipelines Limited (RGPL) is currently implementing a gas pipeline project from Shahdol, Madhya Pradesh to Phulpur, Uttar Pradesh for evacuation of gas produced from Coal Bed Methane (CBM) blocks owned by Reliance Industries Ltd. This pipeline will be hooked up with GAIL's HVJ Pipeline at Phulpur. Over all Pipeline system includes 312 km (approx.) long trunk line, and associated facilities such as Compressor Station at Shahdol, Intermediate Pigging facilities, Metering & Regulating facilities at Phulpur and 12 No. Mainline valve stations. Gas produced from CBM blocks will be dehydrated within Gas Gathering Station facilities of CBM Project located upstream of pipeline Compressor station at Shahdol. Gas received at pipeline battery limit is dry and non-corrosive gas in nature, Internal corrosion is not expected in normal course of operation, however internal corrosion of the natural gas pipeline can occur when the pipe wall is exposed to moisture and other contaminants either under process upset conditions or under particular operating conditions. Even though internal corrosion is not expected during normal course of operations, to take care of any eventuality, it is proposed to implement Internal Corrosion Monitoring (ICMS) system in this project. ICMS will provide an efficient and reliable means of continuous monitoring internal corrosion. Internal Corrosion Monitoring (ICMS) system is used as a part of overall integrity management framework; to achieve two objectives viz., verify the corrosive behaviour of gas and to verify the efficacy of applied preventive actions. Philosophy involved in evaluating a suitable CM technique would include : 1. Applicable corrosion damage mechanisms, anticipated corrosion rates and probable locations. 2. Suitable CM technique and location based on process condition, system corrosivity, water content, pigging facilities, available corrosion allowance, design life, maintenance etc., 3. Measurement frequency. Some of the Corrosion Monitoring techniques used for pipeline and of relevance are: 4. Weight-loss Corrosion Coupons (CC), 5. Electrical Resistance probes (ER), 6. Linear Polarization Resistance Probe (LPR) 7. Ultrasonic Thickness Measurement (UT) 8. Sampling Points (SP) This paper discusses the merits / demerits of these corrosion monitoring techniques, considerations for selecting a specific technique for the Shahdol - Phulpur Gas Pipeline Project and highlights the implementation of the internal corrosion monitoring system.
机译：Reliance天然气管道有限公司（RGPL）目前正在实施从中央邦Shahdol到北方邦Phulpur的天然气管道项目，以疏散Reliance Industries Ltd.拥有的煤层气（CBM）区块产生的天然气。该管道将与盖尔公司位于弗尔普尔的HVJ管道。整个管道系统包括312公里（约长）的干线，以及相关设施，例如Shahdol的压缩机站，中级清管设施，Pulpur的计量和调节设施以及12号Mainline阀门站。煤层气区块产生的天然气将在位于Shahdol管道压缩机站上游的CBM项目的集气站设施内进行脱水。在管道电池极限处接收的气体本质上是干燥且无腐蚀性的气体，在正常操作过程中不会发生内部腐蚀，但是当管道壁暴露于湿气和其他污染物下时，天然气管道可能发生内部腐蚀过程异常条件或特定操作条件下。即使在正常的操作过程中预计不会发生内部腐蚀，但是为了避免任何可能的情况，建议在该项目中实施内部腐蚀监测（ICMS）系统。 ICMS将提供一种持续监控内部腐蚀的有效且可靠的方法。内部腐蚀监测（ICMS）系统用作整体完整性管理框架的一部分；为了实现两个目标，即验证气体的腐蚀行为并验证所采取的预防措施的有效性。评估合适的CM技术所涉及的哲学包括：1.适用的腐蚀破坏机制，预期的腐蚀速率和可能的位置。 2.根据工艺条件，系统腐蚀性，水含量，清管设施，可用的腐蚀余量，设计寿命，维护等，选择合适的CM技术和位置。3.测量频率。用于管道及其相关性的一些腐蚀监测技术包括：4.重量减轻腐蚀券（CC），5.电阻探针（ER），6.线性极化电阻探针（LPR）7.超声波测厚（UT） ）8.采样点（SP）本文讨论了这些腐蚀监测技术的优缺点，为Shahdol-Phulpur天然气管道项目选择特定技术的考虑，并着重介绍了内部腐蚀监测系统的实施。

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