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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.
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.
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 ...
The company said the clean-up, conducted by the Bodo Mediation Initiative (BMI), which is meant to serve as a mediator between oil companies, including Shell, and the Bodo community (and is part ...
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 ...
Classification of pipeline pigs Source self-made Date 04-11-2008 Author BonGoggle Permission (Reusing this file) See below.
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 ...