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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.
Deepchill Technologies Inc. (previously known as Sunwell Technologies Inc.) registered the world's first slurry ice patent application in the US in 1976. [1] Deepchill pioneered and continued to develop the field of slurry ice and is today the world leader in slurry ice systems, with numerous patents worldwide covering various processes for the production, storage and distribution of slurry ice.
The pig is pushed either with a gas or a liquid; if pushed by gas, some systems [10] can be adapted in the gas inlet in order to ensure pig's constant speed, whatever the flow pressure is. The pigs must be removed, as many pigs are rented, pigs wear and must be replaced, and cleaning (and other) pigs push contaminants from the pipeline such as ...
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.
Winter Storm Freya whipped from the Midwest into the Northeast Thursday, coating roads in slick ice from Baltimore up the I-95 corridor, making for dangerous commutes and forcing school closures ...
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This story was reviewed by Daniel Z. Lieberman, MD. Picture this: You bump into a friend you haven’t seen in forever at the grocery store. You ask them how they’ve been doing, and they say ...
Instrumentation and control engineering (ICE) is a branch of engineering that studies the measurement and control of process variables, and the design and implementation of systems that incorporate them. Process variables include pressure, temperature, humidity, flow, pH, force and speed. ICE combines two branches of engineering.