Practice Test Geeks(Steamfitter) Steamfitter Pipefitter Exam Practice Test
← All STEAMFITTER Flashcard Decks

Technical Standards and Specifications Flashcards

7 cards from real STEAMFITTER practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Technical Standards and Specifications flashcards as text

  1. What is the maximum allowable working pressure (MAWP) concept used to determine in piping design?

    Answer: The highest pressure a system can safely sustain during normal operation

    MAWP is the maximum gauge pressure permissible at the top of a completed vessel or piping system in its normal operating position at the designated temperature.

  2. According to ASME B31.1, what hydrostatic test pressure is required for new piping systems (as a multiple of design pressure)?

    Answer: 1.5 times the design pressure

    ASME B31.1 requires hydrostatic leak testing at 1.5 times the design pressure to verify integrity of new power piping systems.

  3. Which AWS standard governs the qualification of welding procedures and welders for structural welding?

    Answer: AWS D1.1

    AWS D1.1 Structural Welding Code—Steel governs the qualification of welding procedures and welders for structural steel applications.

  4. What is the purpose of a Procedure Qualification Record (PQR) in piping welding?

    Answer: To record the actual test results that support a Welding Procedure Specification

    A PQR documents the actual variables used and test results obtained when qualifying a Welding Procedure Specification (WPS), providing evidence the procedure produces sound welds.

  5. Under ASME B31.1, what is the definition of 'nominal pipe size' (NPS)?

    Answer: A dimensionless designator correlating to pipe outside diameter but not equal to it above NPS 12

    NPS is a dimensionless designator used in the US piping system; for NPS 14 and larger, the NPS number equals the actual outside diameter in inches, but for smaller sizes it does not.

  6. Which ASTM specification covers austenitic stainless steel pipe commonly used in high-temperature and corrosive service?

    Answer: ASTM A312

    ASTM A312 covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe for high-temperature and general corrosive service.

  7. What does the term 'joint efficiency' (E) account for in pressure piping design calculations?

    Answer: The reduction in allowable stress due to the type and quality of the pipe joint or weld

    Joint efficiency is a factor (0 to 1.0) that reduces allowable stress to account for the weakening effect of a weld seam or mechanical joint relative to seamless pipe.