Pipeline pigging operations pdf

Pipeline pigging operations safety and chemical processing. Pipeline inspection an overview sciencedirect topics. Following articles will help you understand pipeline pigging. Operational pigging water pipelines apache pipeline products. Pipeline pigging incident dave shepherd aug, 2005 what is a pipeline pig.

How to pig a pipeline gas pipeline pigging procedure nigen. The use of pig launcher and receiver stations for pipeline cleaning, inspecting and maintenance is a method seen. Pipeline pigging is a concept in pipeline maintenance that involves the use of devices known as pigs, which clean pipelines and are capable of checking pipeline condition. A variety of intelligent pigs have been employed for pipeline inspection purposes, including detection of not only dents and buckles but also corrosion pitting, cracks, spanning and burial, and measurement of wall thickness. In fact, the focus was mainly on the waxbreaking force in most research, whereas the. Jun 07, 2016 how pig launcher are used in pipelines to clean the pipes which are corroded, scale, muddy by flow to crude oil or gas from the pipe line over the period of time in the piping system. Pipeline pigging and its operation posted by akki on 8. This online course gives introduction to pipeline pigging operations management. The choice of these pig traps will depend on the type of.

The inclusion of a simple gauge plate, made of a soft metal generally aluminium, on batching pigs provides the function. Gases rich in recoverable hydrocarbons tend to condense liquids in. Pdf 82677019pipelinepigginghandbook taufan muhammad. How pig launcher are used in pipelines to clean the pipes which are corroded, scale, muddy by flow to crude oil or gas from the pipe line over the period of time in the piping system. Must be prepared before operations of a pipeline system commence. Whenever possible, this pigging is done onstream i. Introduction to pipeline pigging operations management. Optimize pipeline performance by simulating pigging operations. All the papers are derived from conferences held in aberdeen in 1988 and 1990, and houston in 1989, 1990, and 1991. Each procedure developed must include the following specific requirements. Usually, the first application is when the contractor runs a cleaning pig to clean short sections of pipe to remove dirt and other construction debris that may be inside the pipe as the pipeline is being assembled. Pdf widely used as it is, pipeline pigging still holds ambiguities in its mechanisms. Presentation written procedures for conducting operations and maintenance activities and for emergency response. The practice of using devices known as pigs to perform various maintenance operations on a.

D352386x012 using pipelinestudio to simulate pigging. Pipelines get dirty during construction and regular operations. As pipelines are burried underground or under water, only way to clean or inspect them is through pigging. Fatal accident stresses the importance of interlocks on. This is done without stopping the flow of the product in the pipeline. They are applied at an increasing number of pigging installations throughout the world and form a standard safety measure for pigging operations at many of the leading global oil and gas companies. Introduction to pipeline pigging operations management this online course gives introduction to pipeline pigging operations management. Pipeline owners and operators also use pigs to protect their product purity, remove unwanted materials and items from their line, prepare for precommissioning and inspection testing, and confirm pipeline defects. Sections take up the reasons to pig a pipeline, regulations, operations, technique and equipment, the assessment of results, and research. Pigging is a vital component of ongoing pipeline maintenance and operation, but its value extends far beyond those roles. Keeps pipeline running continuously keeps pipeline near maximum throughput by removing debris. The choice of these pig traps will depend on the type of pig to be run and pipeline design conditions.

Pipeline pigging technology john tiratsoo download. Apr 23, 2004 pipeline pigging operations posted in safety and chemical processing incidents. Procedures for pigging operations free download as word doc. These systems are frequently pigged with spherical or bulletshaped pigs to remove accumulated liquids and reduce the. Recover gas from pipeline pigging operations technologypractice overview. After 100 miles, a plug about 1,450 ft long would form. How pipeline pigging works pipeline pigging process. Operating procedures will vary from one pipeline company to another. The purpose of pigging 4 cleaning pigging is an integral part of pipeline construction. 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. Cleaning or utility pigs, when run onstream, will have the speed of the pig dictated by the product flow. Paraffin removal corrosion inhibition pipeline suspension background two workers were attempting to remove a pig from a line that was launched the previous day. Used to clean or inspect pipelines that are in service.

How to select the proper pig for specific pigging applications 4. Apr 03, 20 therefore, mechanical interlocks are widely considered to be the most effective safety measure. Utility pigs, which are used to perform functions such as cleaning, separating. The pig may be used to scrape off deposits wax, parafins from the inside of the pipeline, or to push liquids through a multiphase pipeline. Description gases rich in recoverable hydrocarbons tend to condense liquids in gathering systems upstream of gas gathering and processing plants. Pigging operations refers to maintenance practice for pipelines using pipeline pigs, for cleaning or inspection of pipeline without stopping operation of the pipeline. It acts as a basic prerequisite and foundation to introduction to pipeline pigging operations management.

Suggested pigging procedures pigging for pipeline efficiency. It is necessary to clean and inspect pipeline regularly. The information obtained from the pigging operations is used for assessment of pipeline safety and integrity. Oil and gas pipeline design, maintenance and repair. Recover gas from pipeline pigging operations pdf epa. Pigging pipeline processes vary depending on the type of product carried in the pipeline, and the size and materials of which it is constituted. Pigging must be done by competent or experienced pipeline pigging contractors or professionals to mitigate the inherent safety risks. For more information on bc one call, visit the bc one call. Pigging operations control approach r respiratory protective equipment oce offshore coshh essentials this information will help offshore dutyholders owners, operators and contractors to comply with the control of substances hazardous to health regulations 2002 coshh, as amended, to protect workers health.

An introduction to pipeline pigging by robert davidson. Select the right pig design to clean the specific holdup in the pipeline. Pipeline pigging plays an important part of any operators flow assurance and pipeline integrity management strategy. The pigging operation involves the cleaning, inspection and integrity check such as checking of gas pipes wall thickness of the submarine gas pipelines. The pipeline operators forum is a nonprofit forum enabling pipeline inspection and integrity engineers to share and build good practices, with the ultimate purpose of improving the quality of pipeline integrity management at every level, hence protecting people, the environment and operational integrity of pipelines globally. In gas pipelines, the pig is used to dewater the pipeline by running it behind. Tweet while buildup in a pipeline can cause transmittal slows or even plugging of the pipeline, cracks or flaws in the line can be disastrous. Pdf study on wax removal during pipelinepigging operations. Safe pipeline pigging procedures pipeline pig faqs, use and results pipeline pigging is a method used all around the us and the rest of the world as an effective method of cleaning, inspecting and maintaining industrial pipes. Pipeline pigs are capsule shaped objects which travel through the pipeline, cleaning the inner walls of the pipeline by brushing action. Procedures for pigging operations pipeline transport visual cortex. The practice of using devices known as pigs to perform various maintenance operations on a pipeline. To properly pig a pipeline and to ensure safe operation, you need the services of a seasoned pipeline pigging contractor.

For those not familliar with pipeline operations, pigging is the practice of inserting a device the pig into a flowing pipeline that will run through the pipeline. Precommissioning when new pipelines are built, they generally need to be cleaned of construction debris and prepared for hydrostatic testing. A pig is run between the two fluids to separate them. To define pigging, it i s a process in which a properly sized device, be it spherical or cylindrical is propelled through a pipeline by manipulating the pressure and. Also known as a swabbing pig, the batching pig is designed to act as a simple barrier between dissimilar fluids or to provide a sweep of a line. Routine pigging of pipelines is implemented to maximise operational throughput, ensure continuous operation and remove debris or deposits liquid or solid that may restrict flow or induce corrosion growth. Jul 18, 2017 introduction to pipeline pigging operations management. These operations include but are not limited to cleaning and inspecting the pipeline. Pigging gathering lines hydrocarbons and water condense inside wet gas gathering lines, causing pressure drop and reducing gas flow periodic line pigging removes liquids and debris to improve gas flow efficient pigging. Ensuring the operator in charge of the pigging operation has a full. In pipeline transportation, pigging is the practice of using pipeline inspection gauges, devices generally referred do as pigs or scrapers to perform various maintenance operations.

Dec 18, 2018 during pigging pressure control is essential to avoid bodily injury. For this reason, pipelines are operated to very definite pigging programmes. Most pipeline gels are waterbased, but a range of chemicals. Provisions in the station design should include handling. Reasons for pigging pigging of a pipeline is required at various stages of a pipelines life for a variety of reasons. These are summarised below in an example of an oil production pipeline. The purpose of this training course is to present the requirements for the relevant industry practices regarding inspection and condition monitoring of pipeline systems using pigging devices, with the final goal of optimization of maintenance and efficiency of pipeline operation.