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2. Hydraulically activated pipeline pigging - Wikipedia

   en.wikipedia.org/wiki/Hydraulically_Activated...

   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.

3. Enterprise Products - Wikipedia

   en.wikipedia.org/wiki/Enterprise_Products

   Enterprise Products Partners L.P. (NYSE: EPD) is an American midstream natural gas and crude oil pipeline company with headquarters in Houston, Texas. [6] It acquired GulfTerra in September 2004. The company ranked No. 105 in the 2018 Fortune 500 list of the largest United States corporations by total revenue. [7]

4. Piping Technology and Products - Wikipedia

   en.wikipedia.org/wiki/Piping_Technology_and_Products

   Piping Technology and Products is a privately owned pipe support manufacturing and engineering company headquartered in Houston, Texas, United States. [1] Its wholly owned subsidiaries are US Bellows , Sweco Fab, Fronek Anchor/Darling Enterprise, and Pipe Shields. [ 2 ]

5. Pigging - Wikipedia

   en.wikipedia.org/wiki/Pigging

   The wire brush encircles the shaft and scours the interior of the pipeline. A scraper pig shown at the Trans-Alaska Pipeline System Visitors Center. In pipeline transportation, pigging is the practice of using pipeline inspection gauges or gadgets, devices generally referred to as pigs or scrapers, to perform various maintenance operations ...

6. Slugcatcher - Wikipedia

   en.wikipedia.org/wiki/Slugcatcher

   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.

7. Natural gas pipeline system in the United States - Wikipedia

   en.wikipedia.org/wiki/Natural_gas_pipeline...

   The most recent was the 2010 San Bruno pipeline explosion that killed at least four people, injured 60 and more victims are still missing. [19] Portions of the San Bruno pipeline had been built in 1956. In ideal situations, pipeline inspection gauges or a “PIG” (see Pigging) is used to inspect and ensure the safe operation of natural gas ...