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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 pig's 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 ...
The pipeline was lengthened to 700 miles. As part of an environmental agreement, Longhorn Partners replaced 19 miles of that 1950s-vintage pipe, over a section of the Edwards Aquifer, near Austin, Texas, with thicker-walled pipe. In 2013, Longhorn was switched back to its original flow direct of west to east, and, switched back to crude oil ...
Highway names; Interstates: Interstate X (I-X) Interstate Highway X (IH-X) US Highways: U.S. Highway X (US X) Loops: Loop X: Spurs: Spur X: Recreational: Recreational Road X (R X)
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]
Pigging slugs are caused by pigging operations in the pipeline. The pig is designed to push all or most of the liquids contents of the pipeline to the outlet. This intentionally creates a liquid slug. Slugs formed by terrain slugging, hydrodynamic slugging or riser-based slugging are periodical in nature.
On January 30, 2017, a Texas Department of Transportation crew accidentally dug into the Seaway Pipeline near Blue Ridge, Texas, causing a large spill. [9] On January 30, 2017, a road crew punctured the Seaway pipeline near Dallas. Two days later, it was unclear how much oil had spilled over the nearby Highway 121.
Gulf South Pipeline is a natural gas pipeline system that transports gas between south and east Texas, Louisiana, Alabama, Mississippi, and Florida. The system is owned by a limited partnership. The system connects to Henry Hub in Louisiana. Its FERC code is 11. [1]