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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.
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)
A pig has been used as a plot device in three James Bond films: Diamonds Are Forever, where Bond disabled a pig to escape from a pipeline; The Living Daylights, where a pig was modified to secretly transport a person through the Iron Curtain; and The World Is Not Enough, where a pig was used to carry and detonate a nuclear weapon in a pipeline.
Classification of pipeline pigs Source self-made Date 04-11-2008 Author BonGoggle Permission (Reusing this file) See below.
Image of a guillotine-style mousetrap seller in the mid-19th century. In February 1855, Emerson wrote in his journal, under the heading "Common Fame": If a man has good corn or wood, or boards, or pigs, to sell, or can make better chairs or knives, crucibles or church organs, than anybody else, you will find a broad hard-beaten road to his house, though it be in the woods.
A trapdoor or hatch is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof. [1] It is traditionally small in size. [ 2 ] It was invented to facilitate the hoisting of grain up through mills, however, its list of uses has grown over time. [ 3 ]
Pipe plugs are used with supplementary accessories such as air and water hoses, air and pressure control devices, gauges, adapters and chains depending on the type of the pipe plug and the process. Auxiliary equipment like compressors for inflating the pipe plugs, water tanks for filling the pipeline and pumps for some cases must be used.
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 ...