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Hydraulically activated pipeline pigging (HAPP) is a pigging technology applied for pipeline cleaning. The basic principle is that a pressure drop is created over a by-passable pig held back against a pipeline's fluid flow. The pipeline fluid passing through the pigs cleaning head is accelerated by this pressure drop, forming strong cleaning jets.
Unlock and open door, remove pig from receiver, close and lock door. Pig receiver is then ready to receive the next pig. Pigging station. The pigging installation shown (right) is known as an Above Ground Installation (AGI). It is part of the UK's National Transmission System for natural gas. It shows two pig launcher/ receivers at the end of ...
Pig launcher. Pipeline pig launchers and receivers are provided with a pig signaller (XA) to indicate that a pig has been launched or has arrived. [4] Packaged items of equipment (compressors, diesel engines, electricity generators, etc) are fitted with local vendor supplied instrumentation. When equipment malfunctions a multivariable signal ...
October 15 – A natural gas pipeline under construction in Grand Prairie, Texas was running a cleaning pig without a pig "trap" at the end of the pipe. The 150 pound pig was expelled from the pipeline with enough force to fly 500 feet (150 m), and crash through the side of a house. No one was injured. [44]
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Editor’s Note: Help is available if you or someone you know is struggling with suicidal thoughts or mental health matters. In the US: Call or text 988, the Suicide & Crisis Lifeline.
That sweet pig has the zoomies," added another person with a chuckle. A second video on the page shows the pig slowing things down with a stroll. How cute! Caring for an Animal With Special Needs.
August 15 – Two pipeline workers were injured when a lid on a pipeline pig trap blew off of a gas pipeline, near Barstow, Texas. A fire followed. [42] September 5 – A gasoline pipeline ruptured and ignited at a Plantation Pipeline Terminal in Bremen, Georgia. For a time, there were fears the fire might spread to nearby fuel storage tanks ...