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WPS and PQR Qualification Flashcards

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

Read the first 7 WPS and PQR Qualification flashcards as text

  1. A WPS specifies a minimum preheat temperature of 300°F. During production welding the inspector measures the base metal temperature at 275°F. What action should the inspector take?

    Answer: Stop welding and require the base metal to be reheated to at least 300°F before resuming

    Preheat is an essential variable; welding below the WPS minimum preheat temperature is a nonconformance that must be corrected before welding continues.

  2. Under ASME Section IX, postweld heat treatment (PWHT) conditions (temperature range and holding time) are classified as:

    Answer: Essential variables for all base metals

    PWHT temperature range and time are essential variables under ASME Section IX QW-407; any change in PWHT conditions requires requalification.

  3. During SAW procedure qualification, the inspector notes the flux used is a different lot number than specified in the WPS. Under ASME Section IX, is this a problem?

    Answer: No, flux lot number is not a controlled variable under ASME Section IX

    ASME Section IX does not identify flux lot number as an essential, supplementary essential, or nonessential variable; the classification and type are what matter.

  4. For a FCAW-G (gas-shielded flux-cored arc welding) WPS, adding shielding gas backing where none was previously used is considered what type of variable under ASME Section IX?

    Answer: Essential variable

    Adding or deleting backing gas (shielding gas on the back side) is an essential variable for FCAW-G under ASME Section IX QW-408.

  5. A CWI reviewing a WPS notices it does not address interpass temperature. What is the correct interpretation under ASME Section IX?

    Answer: Interpass temperature is a nonessential variable and its omission does not invalidate the WPS

    Under ASME Section IX, maximum interpass temperature is a nonessential variable and does not need to be listed for the WPS to be valid.

  6. Under AWS D1.1 Table 4.5, which welding process is permitted to use a single-pass weld for procedure qualification regardless of base metal thickness?

    Answer: ESW (electroslag welding)

    Electroslag and electrogas welding are inherently single-pass processes, and AWS D1.1 specifically addresses their qualification under separate provisions reflecting that nature.

  7. When a procedure qualification test coupon is welded in the 6G position (pipe inclined 45°), which welding positions does it qualify for groove welds under ASME Section IX?

    Answer: All groove weld positions

    Qualification in the 6G (inclined fixed pipe) position qualifies all groove weld positions under ASME Section IX QW-461.