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  2. Fusible plug - Wikipedia

    en.wikipedia.org/wiki/Fusible_plug

    A drawing of a fusible plug, showing the tapered core. A fusible plug is a threaded cylinder of metal, usually bronze, brass or gunmetal, with a tapered hole drilled completely through its length. This hole is sealed with a metal of low melting point that flows away if a predetermined high temperature is reached.

  3. Plastic weld non-destructive examination - Wikipedia

    en.wikipedia.org/wiki/Plastic_weld_non...

    Three types of set-ups were used to model the conditions of above ground pipelines, plastic lined metal pipe, and undersea pipelines. Defects were modeled using notches and holes in the outside of the pipe. The crawler was design with the microwave probes on a rotating head and sensors on the wheels to measure travel distance of the crawler.

  4. Pigging - Wikipedia

    en.wikipedia.org/wiki/Pigging

    The technology used varies by the service required and the design of the pig; each pigging service provider may have unique and proprietary technologies to accomplish the service. Surface pitting and corrosion, as well as cracks and weld defects in steel/ferrous pipelines are often detected using magnetic flux leakage (MFL) pigs.

  5. Dye penetrant inspection - Wikipedia

    en.wikipedia.org/wiki/Dye_penetrant_inspection

    Dye penetrant inspection (DP), also called liquid penetrate inspection (LPI) or penetrant testing (PT), is a widely applied and low-cost inspection method used to check surface-breaking defects in all non-porous materials (metals, plastics, or ceramics).

  6. Magnetic flux leakage - Wikipedia

    en.wikipedia.org/wiki/Magnetic_flux_leakage

    Magnetic flux leakage (TFI or Transverse Field Inspection technology) is a magnetic method of nondestructive testing to detect corrosion and pitting in steel structures, for instance: pipelines and storage tanks. The basic principle is that the magnetic field "leaks" from the steel at areas where there is corrosion or missing metal.

  7. Inspection in manufacturing - Wikipedia

    en.wikipedia.org/wiki/Inspection_in_manufacturing

    Inspection in manufacturing is conducting inspection during the production process.This approach of inspection helps to control the quality of products by helping to fix the sources of defects immediately after they are detected, and it is useful for any factory that wants to improve productivity, reduce defect rates, and reduce re-work and waste.

  8. Closure (container) - Wikipedia

    en.wikipedia.org/wiki/Closure_(container)

    A screw closure is a mechanical device which is screwed on and off of a threaded "finish" on a container. Either continuous threads (C-T) or lugs are used. Metal caps can be either preformed or in some instances, rolled on after application. Plastic caps may use several types of molded polymer. Some screw tops have multiple pieces.

  9. Go/no-go gauge - Wikipedia

    en.wikipedia.org/wiki/Go/no-go_gauge

    The lower image is a plain plug gauge used to check the size of a hole; the green end is the go, and the red end is the no-go. The tolerance of the part that this gauge checks is 0.30 mm, where the lower size of the hole is 12.60 mm and the upper size is 12.90 mm, every size outside this range is out of tolerance. This may be initially ...

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