pigging natural gas lines

  • Internal corrosion in gas pipelines

    Internal Corrosion in Gas Pipelines . Corrosion on the internal wall of a natural gas pipeline can occur when the pipe wall is exposed to water and contaminants in the gas, such as O 2, H 2 S, CO 2, or chlorides.The nature and extent of the corrosion damage that may occur are functions of the concentration and particular combinations of these various corrosive constituents within the pipe, as ...

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  • Why pigs get stuck and how to avoid it

    multi-diameter lines, this is even more critical and pigging should be treated no different to any other offshore or pipeline equipment, with a sufficient level of design, analysis and planning performed. In dewaxing oil lines, there is an increasing move to use pigs rather than expensive chemicals.

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  • Distribution Pipeline System Integrity Threats Related to ...

    data for natural gas distribution systems, which includes mains and services. We also reviewed incident data for gas transmission systems and hazardous liquid transmission systems. With the exception of certain features unique to distribution systems (e.g. cast iron or plastic piping), the data from incidents in those systems told a similar story

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  • Pigging Pipeline Procedures - Drinkwater Products

    Pigging pipeline processes vary depending on the type of product carried in the pipeline, and the size and materials of which it is constituted. Pipe pigs are used for a range of purposes, including natural gas and liquid pipelines. These devices are forced through the pipelines using pressure.

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  • Pipeline pigging - LinkedIn SlideShare

    6/1/2015· PIPELINE DESIGN FOR PIGGING 6 • Driving a Pig • Big difference between pigging natural gas and liquid lines – Pigs go with the flow in liquid lines • For gas lines, the front cup seal off flow and differential pressure drives the pig – For a 24 inch pig, a differential pressure from the front of the pig to the back of 10 psi provides ...

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  • Northern Natural Gas

    Through the normal course of a natural gas pipeline system's operation, pipeline liquids, mostly in the form of hydrocarbons, can drop out of the gas stream and accumulate throughout a pipeline network. ... Northern is pigging many its lines to remove liquids that may be present in the system. Northern has had a PCB management program in ...

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  • CLEANING OF OIL & GAS PIPELINES - Pigging Products and ...

    CLEANING OF OIL & GAS PIPELINES ON-LINE & OFF-LINE By Theo Verleun N-SPEC® an activity of Brenntag Summary: The outcome of the last Pipeline and Pigging Conference in Houston, February 2003, could be summarized in one major topic "Pipeline Integrity Management", also .

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  • Pigging Pipeline Procedures - Drinkwater Products

    Pigging pipeline processes vary depending on the type of product carried in the pipeline, and the size and materials of which it is constituted. Pipe pigs are used for a range of purposes, including natural gas and liquid pipelines. These devices are forced through the pipelines using pressure.

    Get price
  • Natural gas pipeline approved – Pipelines International

    ONEOK Bakken Pipeline LLC has received permission to build its proposed 121 km gas pipeline in Williams County, North Dakota. With an estimated capacity of 30,000 bbl/d, the pipeline will transport a mixture of Y-grade natural gas liquids (NGL) including ethane, propane, butanes, iso-butane mix, pentanes and natural gasoline.

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  • 49 CFR § 192.629 - Purging of pipelines. | CFR | US Law ...

    (a) When a pipeline is being purged of air by use of gas, the gas must be released into one end of the line in a moderately rapid and continuous flow. If gas cannot be supplied in sufficient quantity to prevent the formation of a hazardous mixture of gas and air, a slug of inert gas must be released into the line before the gas. (b) When a pipeline is being purged of gas by use of air, the air ...

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  • Start up and Commissioning of the Pipeline: An Article ...

    Intelligent Pig (Fig. 2) To record bends, dents, ovality, bend radius & angle. PIG Launching / Receiving Barrel: Refer Fig. 2 Commissioning of a Gas Pipeline. A gas pipeline is treated as Tank. However, before taking gas in the Pipeline, it is to be made moisture and oxygen-free. Commissioning Steps

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  • Modelling of Pig Train Dynamics in Natural Gas Lines

    12 Modelling of Pig Train Dynamics in Natural Gas Lines Pig Velocity Profiling Dr. Aidan O'Donoghue [email protected]

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  • PHMSA Regulations | PHMSA

    Feb 27, 2020· The Office of Pipeline Safety ensures safety in the design, construction, operation, maintenance, and spill response planning of America's 2.6 million miles of natural gas and hazardous liquid transportation pipelines. To browse interpretations, please do with the Interpretations Search.

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  • Pipeline Pigging for Better Results

    1/18/2017· Rich natural gas systems that generate large volumes of condensate on both onshore and offshore pipelines are a challenge because they are continually condensing liquids from the gas stream. These systems require frequent pigging operations to maintain and control condensate levels to prevent flooding of downstream slug catchers and process ...

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  • Natural Gas Piping Safety Training Powerpoint

    Required to remove gas from natural gas piping. Examples include removing an old section of pipe or disconnecting pipe for valve or gas operated equipment repairs/replacement. Affected upstream gas valves(s) shall be LO/TO, a hose or pipe will be connected to the drip leg, open end of pipe, port, etc. to ensure any gas is

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  • How smart PIGs keep pipelines safe | Duke Energy ...

    In fact, the whole operation takes considerable time. It can take up to a year to retrofit older lines for pigging. A cleaning PIG must be sent in to prepare a line to be pigged, and that alone can take three to four weeks, said Jim Kalish, Piedmont Natural Gas manager of engineering."The pipeline has to be clean to get good data," he said.

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  • Start up and Commissioning of the Pipeline: An Article ...

    Commissioning of a Gas Pipeline. A gas pipeline is treated as Tank. However, before taking gas in the Pipeline, it is to be made moisture and oxygen-free. Commissioning Steps. Drying – Purging of super dry air: Compressed Super dry air is purged using air compressors with accessories viz. Moisture Separator, Oil Separator, and Dryer. The air ...

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  • (PDF) 82677019-Pipeline-Pigging-Handbook | Taufan Muhammad ...

    82677019-Pipeline-Pigging-Handbook

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  • Methods help remove black powder from gas pipelines | .

    DEPA's high-pressure gas network (Fig. 1) first experienced operational problems caused by black powder in imported natural gas in March 1999. DEPA performed a pigging operation on the first 12 ...

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  • SUN Engineering inc | Pipeline Pigging

    Since 1978, S.U.N. Engineering, Inc. has been providing industry-leading mileage, performance, simplicity, innovation, and affordability in pipeline-pigging

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  • Pipeline Pigging Products - Pipeline Cleaning Pig ...

    Inline Services is a pipeline cleaning pig manufacturer used for a variety of applications. Our variety of pipeline pigging products includes pipeline pigs, pig parts & accessories, equipment & detection, and product recovery systems. Contact us today for more information or to request a quote!

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  • Smart Pig Technology – Pipeline Pigging and Inline ...

    Common Terminology: When referring to using a smart pig inline inspection tool for a pipeline someone may refer to the process as "pigging the pipeline." Some common synonyms for smart pigs: Pipeline pig, pipe pig, pipeline inspection gauge, pipeline inline inspection tool, natural gas pipeline inspection, corrosion detection pig.

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  • Northern Natural Gas

    Northern also is removing liquids by pigging the lines throughout the northern half of the system. These pigs will sweep the existing liquids out through the pig receiver. ... If oil is discovered in your natural gas line, you may contact your representative at Northern or you can call the Operations Communication Center at 1-888-367-6671. This ...

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  • Natural Gas | Natural gas piping pressure testing, purging ...

    9/28/2009· Natural gas piping pressure testing, purging and equipment restarts Ten hazards and how to avoid them. By Bryan Baesel and John Puskar, P.E. Sep 28, 2009. Whenever gas piping is repaired, extended or newly installed, it must be purged. The rules and best practices for handling these situations are often misunderstood, even by those conducting ...

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  • Pipeline Pigging Products - Pipeline Cleaning Pig ...

    Inline Services is a pipeline cleaning pig manufacturer used for a variety of applications. Our variety of pipeline pigging products includes pipeline pigs, pig parts & accessories, equipment & detection, and product recovery systems. Contact us today for more information or to request a quote!

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  • Black Powder Pipeline Prevention Pigs | Inline Services

    Inline Services' pipeline pigs aid in black powder pipeline prevention & removal. Let our experts design a pigging program to prevent black powder in your lines. Request a quote!

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  • Procedure for pigging a pipeline - EnggCyclopedia

    Pigging operations refers to maintenance practice for pipelines using 'pipeline pigs', for cleaning or inspection of pipeline without stopping operation of the pipeline.. Pipeline pigs are capsule shaped objects which travel through the pipeline, cleaning the inner walls of the pipeline by brushing action.. Pigs get their name from the squealing sound they make while traveling through a ...

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  • What is Pipeline Pigging?

    What is Pipeline Pigging? Pipeline Pigging refers to the practice of using devices or implements known as 'pigs' to perform various cleaning, clearing, maintenance, inspection, dimensioning, process and pipeline testing operations on new and existing pipelines. ... Pig launcher/receiver, belonging to the natural gas pipeline in Zwitzerland.

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  • Pipeline Pigging - Pipeline Petroleum Services, Inc.

    PPSI personnel have over 30 years' experience in professional pipeline cleaning services that include mechanical pipe cleaning by pigging, internal high pressure water blasting and flushing. These methods have been proven to be effective in petroleum, LNG, natural gas, as well as process piping and municipal water and sewer pipelines.

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  • Pipeline Pigging for Better Results

    1/18/2017· Rich natural gas systems that generate large volumes of condensate on both onshore and offshore pipelines are a challenge because they are continually condensing liquids from the gas stream. These systems require frequent pigging operations to maintain and control condensate levels to prevent flooding of downstream slug catchers and process ...

    Get price
  • Analysis and prediction of hydrocarbon dew points and ...

    Mar-2006. Analysis and prediction of hydrocarbon dew points and liquids in gas transmission lines. The occurrence of liquid hydrocarbons in natural gas transmission lines has increased in recent years as a result of the shrinking price spread between natural gas and natural gas liquids (NGLs).

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  • Pigging FAQs and Maintenance Guidelines | Drinkwater .

    These are extremes and tend to be less effective. However, some good guidelines are as follows: Liquid lines 1-4 mph and gas lines 5-10 mph seem to be most effective. How often should maintenance pigging be done? We work with lines that are pigged every day, both liquid and gas, and those pigged once a year.

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