Louisiana Welding Inspector Certification
Questions And Correct Answer with Rational
(100% verified answer) Q & A 2026 /
Instant download PDF
1. What is the primary responsibility of a welding inspector?
A. Perform all welding operations
B. Verify weld quality and compliance with codes
C. Design welding machines
D. Purchase welding materials
Correct Answer: B
Rationale: Welding inspectors ensure welds meet applicable codes, specifications,
and quality standards.
2. Which welding code is commonly used for structural steel welding?
A. AWS D1.1
B. API 1104
C. ASME Section IX
D. NFPA 70E
Correct Answer: A
Rationale: AWS D1.1 is the primary code governing structural steel welding.
3. What does WPS stand for?
,A. Welding Procedure Specification
B. Weld Preparation Sheet
C. Welding Position Standard
D. Work Permit System
Correct Answer: A
Rationale: A WPS provides detailed instructions for producing acceptable welds.
4. What document qualifies a welding procedure?
A. MTR
B. PQR
C. SDS
D. NCR
Correct Answer: B
Rationale: Procedure Qualification Record (PQR) documents test results proving a
welding procedure is acceptable.
5. Which discontinuity is characterized by trapped gas pockets in the weld?
A. Undercut
B. Porosity
C. Crack
D. Overlap
Correct Answer: B
Rationale: Porosity forms when gas becomes trapped during weld solidification.
6. Which discontinuity is generally considered the most serious?
,A. Spatter
B. Crack
C. Undercut
D. Reinforcement
Correct Answer: B
Rationale: Cracks can lead to catastrophic weld failure and are usually
unacceptable.
7. What inspection method uses magnetic fields to locate surface defects?
A. VT
B. RT
C. MT
D. UT
Correct Answer: C
Rationale: Magnetic Particle Testing detects surface and near-surface
discontinuities in ferromagnetic materials.
8. What does VT stand for in welding inspection?
A. Visual Testing
B. Voltage Testing
C. Vacuum Testing
D. Verification Testing
Correct Answer: A
Rationale: Visual Testing is the most common and first inspection method used.
9. Which NDT method uses sound waves?
, A. RT
B. PT
C. MT
D. UT
Correct Answer: D
Rationale: Ultrasonic Testing uses high-frequency sound waves to detect internal
flaws.
10. Radiographic testing primarily uses:
A. Magnets
B. Dye
C. X-rays or gamma rays
D. Water pressure
Correct Answer: C
Rationale: RT uses radiation to create images of internal weld discontinuities.
11. Which weld joint joins two plates in the same plane?
A. Corner Joint
B. Lap Joint
C. Butt Joint
D. Edge Joint
Correct Answer: C
Rationale: A butt joint connects members aligned in the same plane.
12. Which welding position is designated 1G?
Questions And Correct Answer with Rational
(100% verified answer) Q & A 2026 /
Instant download PDF
1. What is the primary responsibility of a welding inspector?
A. Perform all welding operations
B. Verify weld quality and compliance with codes
C. Design welding machines
D. Purchase welding materials
Correct Answer: B
Rationale: Welding inspectors ensure welds meet applicable codes, specifications,
and quality standards.
2. Which welding code is commonly used for structural steel welding?
A. AWS D1.1
B. API 1104
C. ASME Section IX
D. NFPA 70E
Correct Answer: A
Rationale: AWS D1.1 is the primary code governing structural steel welding.
3. What does WPS stand for?
,A. Welding Procedure Specification
B. Weld Preparation Sheet
C. Welding Position Standard
D. Work Permit System
Correct Answer: A
Rationale: A WPS provides detailed instructions for producing acceptable welds.
4. What document qualifies a welding procedure?
A. MTR
B. PQR
C. SDS
D. NCR
Correct Answer: B
Rationale: Procedure Qualification Record (PQR) documents test results proving a
welding procedure is acceptable.
5. Which discontinuity is characterized by trapped gas pockets in the weld?
A. Undercut
B. Porosity
C. Crack
D. Overlap
Correct Answer: B
Rationale: Porosity forms when gas becomes trapped during weld solidification.
6. Which discontinuity is generally considered the most serious?
,A. Spatter
B. Crack
C. Undercut
D. Reinforcement
Correct Answer: B
Rationale: Cracks can lead to catastrophic weld failure and are usually
unacceptable.
7. What inspection method uses magnetic fields to locate surface defects?
A. VT
B. RT
C. MT
D. UT
Correct Answer: C
Rationale: Magnetic Particle Testing detects surface and near-surface
discontinuities in ferromagnetic materials.
8. What does VT stand for in welding inspection?
A. Visual Testing
B. Voltage Testing
C. Vacuum Testing
D. Verification Testing
Correct Answer: A
Rationale: Visual Testing is the most common and first inspection method used.
9. Which NDT method uses sound waves?
, A. RT
B. PT
C. MT
D. UT
Correct Answer: D
Rationale: Ultrasonic Testing uses high-frequency sound waves to detect internal
flaws.
10. Radiographic testing primarily uses:
A. Magnets
B. Dye
C. X-rays or gamma rays
D. Water pressure
Correct Answer: C
Rationale: RT uses radiation to create images of internal weld discontinuities.
11. Which weld joint joins two plates in the same plane?
A. Corner Joint
B. Lap Joint
C. Butt Joint
D. Edge Joint
Correct Answer: C
Rationale: A butt joint connects members aligned in the same plane.
12. Which welding position is designated 1G?
