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  2. Pipefitter - Wikipedia

    en.wikipedia.org/wiki/Pipefitter

    Requirements differ from state to state, but most include a four- to five-year apprenticeship. Union pipefitters are required to pass an apprenticeship test (often called a "turn-out exam") before becoming a licensed journeyman. Others can be certified by NCCER (formerly the National Center for Construction Education and Research).

  3. National Center for Construction Education and Research

    en.wikipedia.org/wiki/National_Center_for...

    OSHA formally recognized NCCER Crane Operator Certification Program on May 20, 2010. A ceremony was held in Washington, D.C., that included the North American Crane Bureau, the US Assistant Secretary of Labor for OSHA, the Acting Director for OSHA’s Directorate of Construction, the President/CEO, Associated Builders and Contractors, Inc., the President/CEO, Associated General Contractors of ...

  4. Pipelayer - Wikipedia

    en.wikipedia.org/wiki/Pipelayer

    Pipe fitters plan and test piping and tubing layouts, cut, bend or fabricate pipe or tubing segments and join those segments by threading them, using lead joints, welding, brazing, cementing or soldering them together. They install manual, pneumatic, hydraulic and electric valves in pipes to control the flow through the pipes or tubes.

  5. United Association - Wikipedia

    en.wikipedia.org/wiki/United_Association

    The United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada, commonly known as the United Association (UA), is a labor union which represents workers in the plumbing and pipefitting industries in the United States and Canada.

  6. Principles and Practice of Engineering exam - Wikipedia

    en.wikipedia.org/wiki/Principles_and_Practice_of...

    The Principles and Practice of Engineering exam is the examination required for one to become a Professional Engineer (PE) in the United States. It is the second exam required, coming after the Fundamentals of Engineering exam .

  7. Hydrostatic test - Wikipedia

    en.wikipedia.org/wiki/Hydrostatic_test

    The test involves filling the vessel or pipe system with a liquid, usually water, which may be dyed to aid in visual leak detection, and pressurization of the vessel to the specified test pressure. Pressure tightness can be tested by shutting off the supply valve and observing whether there is a pressure loss.

  8. Sprinkler fitting - Wikipedia

    en.wikipedia.org/wiki/Sprinkler_fitting

    Fire sprinkler control valve assembly. Sprinkler fitting is a skilled trade that consists of assembling, installing, testing, repairing, inspecting, and certifying automatic fire suppression systems and their associated piping in commercial, industrial and residential buildings.

  9. Unfair labor practice - Wikipedia

    en.wikipedia.org/wiki/Unfair_labor_practice

    An unfair labor practice (ULP) in United States labor law refers to certain actions taken by employers or unions that violate the National Labor Relations Act of 1935 (49 Stat. 449) 29 U.S.C. § 151–169 (also known as the NLRA and the Wagner Act after NY Senator Robert F. Wagner [1]) and other legislation.