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  2. Piping and instrumentation diagram - Wikipedia

    en.wikipedia.org/wiki/Piping_and_instrumentation...

    Pipe classes and piping line numbers; Flow directions; Interconnections references; Permanent start-up, flush and bypass lines; Pipelines and flowlines; Blinds and spectacle blinds; Insulation and heat tracing; Process control instrumentation and designation (names, numbers, unique tag identifiers), including:

  3. First article inspection - Wikipedia

    en.wikipedia.org/wiki/First_article_inspection

    A First Article Inspection (FAI) is a production validation process for verifying that a new or modified production process produces conforming parts that meet the manufacturing specification detailed in technical or engineering drawings. Typically, a supplier performs the FAI and the purchaser reviews the report.

  4. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Kinks in flexible ducting must be avoided. Some flexible duct markets prefer to avoid using flexible duct on the return air portions of HVAC systems, however flexible duct can tolerate moderate negative pressures. The UL181 test requires a negative pressure of 200 Pa. To use flexible ducting in a system, make sure to pull the duct tight so you ...

  5. Plumbing drawing - Wikipedia

    en.wikipedia.org/wiki/Plumbing_drawing

    A plumbing drawing, a type of technical drawing, shows the system of piping for fresh water going into the building and waste going out, both solid and liquid. It also includes fuel gas drawings. Mainly plumbing drawing consist of water supply system drawings, drainage system drawings, irrigation system drawings, storm water system drawings.

  6. Pipe marking - Wikipedia

    en.wikipedia.org/wiki/Pipe_marking

    IIAR Bulletin 114 pipe marker for a low-temperature recirculated suction (LTRS) line, where both liquid and vapor are present [6] In 2014, the International Institute of Ammonia Refrigeration introduced a specialized label design for use when marking pipes associated with refrigeration systems using ammonia , including information such as the ...

  7. Risk-based inspection - Wikipedia

    en.wikipedia.org/wiki/Risk-based_inspection

    Risk-based inspection (RBI) is an optimal maintenance business process used to examine equipment such as pressure vessels, quick-opening closure - doors, heat exchangers, and piping in industrial plants. RBI is a decision-making methodology for optimizing inspection plans.

  8. Uniform Plumbing Code - Wikipedia

    en.wikipedia.org/wiki/Uniform_Plumbing_Code

    In 1921 the Building Code Committee and in 1925 a report was issued titled "Recommended Practice for Arrangement of Building Codes" which consisted of 19 chapters, including Chapter 15 on plumbing. This report was known informally as the "Hoover Code" as it was issued under the signature of the Secretary of Commerce Herbert Hoover.

  9. CCTV drain camera (plumbing) - Wikipedia

    en.wikipedia.org/wiki/CCTV_drain_camera_(plumbing)

    CCTV drain cameras, also known as sewer cameras or pipe inspection cameras, are a line of waterproof, high definition cameras that have become a widely popular technology in the plumbing profession. These cameras are advanced diagnostic tools that allow plumbers to execute plumbing inspections, called CCTV Drain Surveys [1] with heightened ...