CWI Code Book Application 3 — Questions and Answers
Question 1: AWS D1.1 requires that RT or UT be performed on CJP groove welds in cyclically loaded structures for what category designation?
- Category A welds only
- Category A and B welds (Correct answer)
- Category B and C welds
- All weld categories
Correct answer: Category A and B welds
AWS D1.1 requires RT or UT on Category A and B CJP groove welds in cyclically loaded (fatigue) structures.
Question 2: Per ASME Section IX, what is the primary purpose of a Procedure Qualification Record (PQR)?
- To document the welding variables used during production welding
- To certify that individual welders are qualified
- To document the actual variables used during a test weld and the test results (Correct answer)
- To list all permissible ranges for production welding
Correct answer: To document the actual variables used during a test weld and the test results
A PQR is a record of the actual variables used during a test weld and the test results that qualify the WPS.
Question 3: In AWS D1.1, when a radiograph shows an elongated slag inclusion, acceptance is based on which dimension relative to the weld throat?
- Width only
- Length only (Correct answer)
- Both length and width independently
- The combined area of the indication
Correct answer: Length only
AWS D1.1 evaluates elongated slag inclusions primarily by their maximum length relative to the weld throat thickness.
Question 4: According to AWS D1.1, which filler metal classification is approved for use with the FCAW process in prequalified WPSs?
- Any AWS A5.20 or A5.36 classified electrode meeting the code's requirements (Correct answer)
- Only electrodes with the 'X' designator in the classification
- Only solid wire electrodes with deposition rates above a specified minimum
- Only electrodes tested at −20°F (−29°C) or lower for CVN impact
Correct answer: Any AWS A5.20 or A5.36 classified electrode meeting the code's requirements
AWS D1.1 allows prequalified FCAW WPSs using electrodes classified under AWS A5.20 or A5.36 that meet all code requirements.
Question 5: Under AWS D1.1, what is the maximum allowable porosity for a groove weld inspected by RT in a statically loaded structure (individual pore diameter vs. weld size)?
- Individual pore ≤ t/4 but not exceeding 3/8 inch (Correct answer)
- Individual pore ≤ t/3 but not exceeding 1/2 inch
- Individual pore ≤ t/2 but not exceeding 3/4 inch
- Any individual pore ≤ 1/16 inch regardless of thickness
Correct answer: Individual pore ≤ t/4 but not exceeding 3/8 inch
AWS D1.1 limits individual pore diameter to t/4 (weld size/4) but not exceeding 3/8 inch for statically loaded structure RT acceptance.
Question 6: When AWS D1.1 specifies 'minimum fillet weld size' in Table 5.8, what is the governing factor for determining that minimum size?
- The tensile strength of the electrode
- The thicker part being joined
- The thinner part being joined (Correct answer)
- The total combined thickness of both base metals
Correct answer: The thinner part being joined
AWS D1.1 Table 5.8 bases minimum fillet weld size on the thickness of the thinner part being joined.
Question 7: Per ASME Section IX, a welder qualified on 6G pipe position is also qualified to weld in which other positions?
- 1G only
- 1G, 2G, and 5G only
- All positions (Correct answer)
- 1G and 2G only
Correct answer: All positions
ASME Section IX qualification in the 6G position qualifies the welder for all positions on pipe and plate.
CWI Code Book Application 3
AWS D1.1 requires that RT or UT be performed on CJP groove welds in cyclically loaded structures for what category designation?