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In some cases, the pig is removed from the pipeline via the receiver at the end of each run. [9] All systems must allow for the receipt of pigs at the launcher, as blockages in the pipeline may require the pigs to be pushed back to the launcher. Many systems are designed to pig the pipeline in either direction.
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.
Ice pigging is a technique used for cleaning pipes, distinguished from traditional pigging by the use of a semi-solid 'pig' made of ice, rather than a solid object. This ice pig is capable of flowing through pipes, navigating obstructions such as valves and variations in pipe diameter, due to its fluid-like properties.
Background and origin of the term "pig": In the field, a device that travels inside a pipeline to clean or inspect it is typically known as a pig. PIG is a bacronym for "Pipeline Inspection Gauge". The acronym PIG came later as the nickname for "pig" originated from cleaning pigs (first designed pigs) that sounded like squealing or screeching ...
U.S. Coast Guard Cutter Waesche crewmembers offload bales of seized narcotics in San Diego, Feb. 13, 2025. / Credit: U.S. Coast Guard photo by Petty Officer 3rd Christopher Sappey
Pig: A device inserted into a pipeline for cleaning purposes. The act of using a pig is called pigging. Piston corers: Advanced piston corer, extended core barrel systems [clarification needed] Pressure core sampler: A tool designed to retrieve a sediment core sample while retaining the pressure at depth. [5]
And clean! Pigs are a lot cleaner than we give them credit for too. Most pigs have excellent long-term memory and can learn from either positive or negative experiences. Studies have even found ...
The pig zone is surrounded on all sides by security and mechanical systems that shield the animals. Outside air enters through multiple filtration systems. Giant vats hold backup supplies of ...
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