what does pig stand for in pipeline
They are then launched inside the pig launcher, where high pressure forces them to reach to the other end of the pipe, which is known as a pig catcher, receiving trap or receiving station. 2- to 60-in sizes and raised-flange, ring-type joint, and butt-weld end connection options. Use of pig tool instead of line flushing for cleaning of pipelines in between batch operations also translates to elimination of environmentally harmful cleaning agent liquids. Care should be taken when using smart pigs or pigs with sensors because the clapper of the check valve can damage the pig unless special design considerations are included. Pipeline Pigs are devices that are used to perform the operations related to a pipeline’s maintenance. Advertise directly with us. abbreviation; word in meaning; location; Examples: NFL, NASA, PSP, HIPAA,random Word(s) in meaning: chat "global warming" Postal codes: USA: 81657, Canada: T5A 0A7. Surface pitting and corrosion, as well as cracks and weld defects in steel/ferrous pipelines are often detected using magnetic flux leakage (MFL) pigs. Some smart pigs use a combination of technologies, such as providing MFL and caliper functions in a single tool. Data recording may be by various means ranging from analog tape, digital tape, or solid-state memory in more modern units. Pigging results after treatment with M-I SWACO PI-7478 wax dispersant (right) compared with pigging results with previous wax deposition treatment (left). Capturing and recording geometric information relating to pipelines (e.g., size, position). PIG stands for Pipeline Integrity Gas. from the pig to provide a location-specific defect map and characterization. Biodegradable Gel Pig Operation Boosts Production 58%, Nontoxic gel cleans condensates out of variable-ID piping for optimized production and improved pipeline economics, Texas. A form of flow assurance for oil and gas pipelines and flowlines, pipeline pigging ensures the line is running smoothly. PIG is defined as Pipeline Inspection Gadget rarely. Usually pigging is done at the beginning and at the end of each batch, but sometimes it is done in the midst of a batch, such as when producing a premix that will be used as an intermediate component. Based on these factors a type of pig tool is chosen. Coal Seam Gas: An Unconventional Alternative? In addition, some check valves, including TOM WHEATLEY check valves, WHEATLEY check valves, and AOP valve and choke technologies, are piggable. T    The primary purpose of pipeline pigs is to make sure that the pipe is clean and free from obstruction. The pig is pushed either with a gas or a liquid; if pushed by gas, some systems[10] can be adapted in the gas inlet in order to ensure pig's constant speed, whatever the flow pressure is. Sample Problem – Logarithmic Mean Temperature Difference (LMTD) calculation. They are used for inspection of the condition of the pipe and/or its contents. Pigging a pipeline starts with a pig trap—a funnel-shaped Y-section in the pipeline that includes a launcher and a receiver. They vary in technology and complexity depending on the intended use and the manufacturer. These systems are not common. There are many reports of incidents in which operators have been injured or even killed while performing a pigging operation. Use of pipe pigs for separation between two products results in saving of product and time required for switching between two different products and line flushing. Lastly, gel pigs are a liquid chemical pigging system. Don't have an account? PIG is defined as Pipeline Integrity Gas very rarely. Pig receivers and launchers are also essential to the pipeline pigging process. 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. Some early cleaning "pigs" were made from straw bales wrapped in barbed wire[4] while others used leather. Today, however, the use of smaller diameter pigging systems is now increasing in many continuous and batch process plants as plant operators search for increased efficiencies and reduced costs. P    In simplest terms the PIG launchers and PIG receivers are the sections of the pipeline which allow the PIG to enter and exit the pipeline. Tweet. We can help! E    Generally, globe valves, butterfly valves, choke valves, and plug valves are not piggable unless a special pigging method or pig is used. Each lock is equipped with two keys: a key for the locked open position and one for the locked closed position. Cleaning pigs help in cleaning the pipeline by getting rid of buildups, sediments and metal objects that are stuck inside the pipe. VIPRS® Product Recovery System for Sanitary Applications, VIPRS® Product Recovery Pigging System for Industrial Applications, Inline COVID-19 Prevention & Mitigation Plan, Inline Services Acquires First Call Enterprises; Strengthens Its Position in Pipeline Market, Meet Marcus Walden – Inline’s New Purchasing Manager. F    The pigs are usually used along with lubricating oil in order to empty the pipe and clean it up from any possible contamination. Pipe pig types can be classified into following categories. Valve interlocks are permanently mounted to both manual and motor operated valves and the closure door. This is done by using a triple plate capacitive sensor in which electrostatic waves are propagated outward through the pipe's wall. Because every pipeline is different, there is not a set schedule for pigging a line, although the quantity of debris collected in a pipeline and the amount of wear and tear on it can increase the frequency of pigging. Meet or exceed today's abrasive and corrosive applications. Examples: NFL, NASA, PSP, HIPAA. M    Pigging has a significant role to play in reducing the environmental impact of batch operations. Pipeline Pigs are used in pipelines before starting a batch or after the completion of the batch. H    Caliper pigs can measure the roundness of the pipeline to determine areas of crushing or other deformations. Certain valves, like the G4N gate valve of the GROVE valve portfolio and WKM Saf-T-Seal slab gate valve, are ideal for these pig traps because their smooth, through-conduit design does not obstruct the line bore.

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