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  2. Hydraulically activated pipeline pigging - Wikipedia

    en.wikipedia.org/wiki/Hydraulically_Activated...

    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.

  3. Hydrodemolition - Wikipedia

    en.wikipedia.org/wiki/Hydrodemolition

    Robotic Hydrodemolition in Ystad, Sweden. Hydrodemolition of concrete exposing the rebar.. Hydrodemolition (also known as hydro demolition, hydroblasting, hydro blasting, hydromilling, waterblasting, and waterjetting) is a concrete removal technique which utilizes high-pressure water, often containing an abrasive material, to remove deteriorated and sound concrete as well as asphalt and grout.

  4. Pigging - Wikipedia

    en.wikipedia.org/wiki/Pigging

    A cleaning pig for a 710-millimetre (28 in) oil pipeline. The blue plastic disks seal against the inside of the pipe to propel the device and to remove loose sedimentation or scale buildup. The black rectangles at the top and the circular disks in the center are magnets to attract and remove any loose metal objects in the pipe.

  5. Ice pigging - Wikipedia

    en.wikipedia.org/wiki/Ice_Pigging

    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.

  6. Tube cleaning - Wikipedia

    en.wikipedia.org/wiki/Tube_cleaning

    In the on-line process, the cleaning body moves through the tubes with the conveying medium and cleans them by means of its oversize compared to the tube diameter. In the range of diameters of up to 50 mm these cleaning bodies consist of sponge rubber, in larger diameters up to the size of oil pipelines it is a matter of scrapers or so-called pigs.

  7. Coiled tubing - Wikipedia

    en.wikipedia.org/wiki/Coiled_tubing

    Newer dual-BOPs combine some of these functions together to need just two distinct rams (shear-blind, pipe-slip). The BOP sits below the riser, which provides the pressurized tunnel down to the top of the Christmas tree. Between the Christmas tree and the riser is the final pressure barrier, the shear-seal BOP, which can cut and seal the pipe.

  8. Category:Piping - Wikipedia

    en.wikipedia.org/wiki/Category:Piping

    Pipe (fluid conveyance) Pipe bursting; Pipe Cutting; Pipe drift; Pipe flow; Pipe marking; Pipe network analysis; Pipe wrench; Pipeline; Pipeline video inspection; Piping and instrumentation diagram; Piping and plumbing fitting; Plastic pipework; Plug (sanitation) Process flow diagram

  9. Penstock - Wikipedia

    en.wikipedia.org/wiki/Penstock

    A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is of Scots origin, and was inherited from the earlier technology of mill ponds and watermills, with penstocks diverting pond waters to drive the mills.

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