AWS Code Compliance & Standards 2 — Questions and Answers
Question 1: Which AWS standard governs structural welding of steel?
- AWS D1.1 (Correct answer)
- AWS D1.2
- AWS D1.6
- AWS D9.1
Correct answer: AWS D1.1
AWS D1.1 is the Structural Welding Code for Steel and is the primary standard for structural steel welding.
Question 2: Under AWS D1.1, what does the term 'prequalified WPS' mean?
- A WPS that does not require qualification testing if it meets all code requirements (Correct answer)
- A WPS approved by the engineer of record only
- A WPS tested and certified by AWS headquarters
- A WPS used exclusively for fillet welds
Correct answer: A WPS that does not require qualification testing if it meets all code requirements
A prequalified WPS meets all the prescriptive requirements of AWS D1.1 and does not require procedure qualification testing.
Question 3: What is the minimum preheat temperature requirement for A36 steel over 1.5 inches thick per AWS D1.1?
- 225°F (107°C) (Correct answer)
- 150°F (66°C)
- 70°F (21°C)
- 300°F (149°C)
Correct answer: 225°F (107°C)
AWS D1.1 requires a minimum preheat of 225°F for A36 steel greater than 1.5 inches thick.
Question 4: Which document must accompany every certified welder to prove qualification status?
- Welder Qualification Test Record (WQT) (Correct answer)
- Material Test Report (MTR)
- Welding Procedure Specification (WPS)
- Procedure Qualification Record (PQR)
Correct answer: Welder Qualification Test Record (WQT)
The Welder Qualification Test Record documents the specific tests a welder has passed and the limits of their qualification.
Question 5: Per AWS D1.1, how long is a welder's qualification valid if they have not welded using that process within the last 6 months?
- The qualification expires and must be renewed (Correct answer)
- It remains valid indefinitely
- It is valid for 1 more year without retesting
- It requires only a visual inspection to renew
Correct answer: The qualification expires and must be renewed
AWS D1.1 requires requalification if a welder has not used the qualified process for more than 6 months.
Question 6: What is the essential variable change that always requires requalification of a WPS under AWS D1.1?
- Change in base metal P-number group (Correct answer)
- Change in welder's last name
- Adjustment of travel speed within ±10%
- Change in electrode lot number
Correct answer: Change in base metal P-number group
A change in the base metal P-number group is an essential variable that requires a new procedure qualification test.
Question 7: Under AWS D1.1, which test is required to qualify a welding procedure for complete joint penetration groove welds?
- Bend test and tensile test (Correct answer)
- Visual inspection only
- Charpy V-notch test only
- Hardness test only
Correct answer: Bend test and tensile test
AWS D1.1 requires bend tests and tensile tests to qualify a WPS for complete joint penetration groove welds.
AWS Code Compliance & Standards 2
Which AWS standard governs structural welding of steel?