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A cleaning pig for a 710-millimetre (28 in) oil pipeline. ... Ice pigging – Pipe cleaning method, a method of pipe cleaning using ice slurry instead of a solid pig;
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.
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.
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 ...
Passive cleaning bodies may be a matter of brushes or special constructions like scrapers or so-called "pigs", for instance, which are conveyed through the tubes by means of pressurized air, water, or other media. In most cases, cleaning is implemented through the oversize of the cleaning bodies compared to the tube inner diameter.
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 ...
This depends on the process that the pipe will be used for and the cleanliness needed for the process. In some cases the pipes are cleaned using a displacement device formally known as a Pipeline Inspection Gauge or "pig"; alternately the pipes or tubes may be chemically flushed using specialized solutions that are pumped through. In some cases ...