What is the difference between pig launcher and pig receiver?
A Launcher is located at the upstream end of the pipeline to launch the Pig into the pipeline. A Receiver is located at the downstream end of the pipeline to remove the Pig from the pipeline.
What is pig launcher & receiver?
Pig Launchers and Receivers are pressure containing vessels or sections of piping within a pipeline system that are utilized for pipeline maintenance, cleaning, and inline inspection.
How do pig launchers and receivers work?
It uses pressure to propel the PIG out of the launcher barrel and sends it through the pipeline system. These come in a variety of sizes depending on the pipeline size. Components typically include a closure door, main line valve, kicker line valve, bleed valve, pressure gauge, drain valve, and PIG signal.
What is pig in pig launcher?
A pig launcher is a device which uses a pressurized container to shoot a cleaning device (“pig”) through the pipeline to perform a variety of functions including cleaning, monitoring, and maintaining of the pipe.
How many types of pigging are there?
There are four basic types of spheres: inflatable. Solid. Foam.
Why is it called pigging?
Etymology. Some early cleaning “pigs” were made from straw bales wrapped in barbed wire while others used leather. Both made a squealing noise while traveling through the pipe, sounding to some like a pig squealing, which gave pigs their name.
What is scraper receiver?
Pig Launchers/Receivers, also known as Scraper Traps, are generally located at terminal points and at compressor stations along the pipeline and provide a safe and efficient means of inserting and removing various types of pipeline pigs. They are available as skidded packages with manual or automated launching systems.
What is pig detector?
A pig detector is a sensing tool used to detect the movement of a pig in a pipeline during pigging operations. The detector is installed on the exterior of the pipe and consists of an indicator (such as a LED light) that alerts operators to the pig’s proximity.
How does a pipeline pig launcher work?
The maintenance tool, pipeline pigs are introduced into the line via a pig trap, which includes a launcher and receiver. Without interrupting flow, the pig is then forced through it by product flow, or it can be towed by another device or cable.
What is pig signaler?
Pig signaler (Pig indicator, Pig detector) is a device installed on a pipeline or a pig trap. The Pig signaler will confirm the passage of a Pig in a pipeline or the arrival/departure of pig in/from a pig trap. Product features. CLST Model Pig Signalers are intrusive-type, mechanically operated and bi-directional.
What is scraper launcher and receiver?
Pipeline Equipment Pig Launchers/Receivers, also known as Scraper Traps, are generally located at terminal points and at compressor stations along the pipeline and provide a safe and efficient means of inserting and removing various types of pipeline pigs.
How does a pigging system work?
Pigging works by propelling a device with wiping discs (the pig) through the pipeline from the source to the destination. As the pig travels through the pipeline, it pushes out the trapped product and cleans the pipe walls leaving the pipeline ready for the next product transfer.
What is intrusive pig signaller?
EMT’s intrusive pig signallers are detector instruments mounted on pig launcher and receiver stations to confirm the launch or arrival of a pig. They can be mounted at any location on a pipeline and will detect the passage of all types of pipeline pigs.
What is pig in oil and gas?
The pig is a cleaning device that is pumped through the pipeline under pressure. Thus, contaminations are conveyed out of the piping. In the oil and gas industry, usually pipelines with large diameters are in use. There, the pigging technology is not only needed for cleaning tasks.
What is pig refinery?
A “pig” is a tool that is sent down a pipeline and propelled by the pressure of the product flow in the pipeline itself. There are four main uses for pigs: Physical separation between different fluids flowing through the pipeline. Internal cleaning of pipelines.