Certified Welder Welding Code Standards & Inspection 2 — Questions and Answers
Question 1: Under AWS D1.1, what is the minimum preheat temperature for ASTM A514 steel with thickness over 2.5 inches?
- 200°F (93°C)
- 225°F (107°C) (Correct answer)
- 300°F (149°C)
- 125°F (52°C)
Correct answer: 225°F (107°C)
AWS D1.1 Table 4.2 requires a minimum preheat of 225°F (107°C) for A514 steel over 2.5 inches thick.
Question 2: Which AWS D1.1 provision governs the repair of unacceptable welds?
- Clause 5 (Correct answer)
- Clause 6
- Clause 8
- Clause 3
Correct answer: Clause 5
AWS D1.1 Clause 5 covers weld quality, repair procedures, and the removal of unacceptable welds.
Question 3: What does a 'V' groove weld symbol with a number below the reference line indicate?
- Root opening dimension
- Groove depth or weld size (Correct answer)
- Weld length
- Number of weld passes
Correct answer: Groove depth or weld size
A number below the reference line on a groove weld symbol indicates the groove depth or effective throat (weld size).
Question 4: According to AWS D1.1, who has the authority to approve welding procedures used on structural steel?
- The welder performing the work
- The engineer of record or designated inspector (Correct answer)
- The welding equipment manufacturer
- The material supplier
Correct answer: The engineer of record or designated inspector
The engineer of record or the inspector designated by the engineer must approve all WPSs used on structural steel projects.
Question 5: What is the purpose of the Charpy V-notch (CVN) test in weld qualification?
- Measure tensile strength
- Evaluate notch toughness (impact resistance) (Correct answer)
- Determine hardness
- Test for porosity
Correct answer: Evaluate notch toughness (impact resistance)
The CVN test measures the energy absorbed during fracture, indicating the toughness of the weld metal at a specified temperature.
Question 6: Under ASME Section IX, a welder who fails a qualification test may retest after:
- Completing additional training and waiting 30 days
- Immediate retesting without restriction
- Documented additional training or practice, then one retest is allowed (Correct answer)
- Supervisor approval only
Correct answer: Documented additional training or practice, then one retest is allowed
ASME Section IX allows one immediate retest if the welder demonstrates additional training or practice has occurred.
Question 7: Which destructive test method is used to evaluate the root and face bend quality of a groove weld coupon?
- Nick-break test
- Macro-etch test
- Guided bend test (Correct answer)
- Tensile test
Correct answer: Guided bend test
The guided bend test bends specimens around a mandrel to reveal cracks or discontinuities in the root, face, or side of the weld.
Certified Welder Welding Code Standards & Inspection 2
Under AWS D1.1, what is the minimum preheat temperature for ASTM A514 steel with thickness over 2.5 inches?