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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.
If the barrel is not completely depressurized, the pig can be ejected from the barrel and operators have been severely injured when standing in front of an open pig door. A pig was once accidentally shot out of the end of a pipeline without a proper pig receiver and went through the side of a house 150 metres (500 ft) away. [11]
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 ...
The primary schematic drawing used for laying out a process control installation. They usually contain the following information: Mechanical equipment, including: Pressure vessels, columns, tanks, pumps, compressors, heat exchangers, furnaces, wellheads, fans, cooling towers, turbo-expanders, pig traps (see 'symbols' below)
In this week's video, I cover need-to-know news about Tesla (NASDAQ: TSLA) from the week of Dec. 2. Check out the short video to learn more, consider subscribing, and click the special offer link ...
In 1987, it began doing business under the name Sentry Group, in order to better identify the company with its trademark name safes — "Sentry". Sentry Group produces more fire-resistant chests, safes, security storage containers, and gun safes than any other company in the world [ citation needed ] and has won several awards, including ...
“Sugar Water Cyanide” by Rebecca Black “Rebecca Black, perhaps best known for the 2011 viral hit ‘Friday,’ is still making music, however now the playground isn’t at the school—it ...
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