NDT Codes and Standards 5 — Questions and Answers
Question 1: What is the significance of the 'referencing code' in ASME Section V?
- It overrides all Section V requirements automatically
- It specifies which Section V articles apply and may impose additional or modified requirements (Correct answer)
- It certifies the NDT personnel performing examinations
- It lists all approved NDT equipment manufacturers
Correct answer: It specifies which Section V articles apply and may impose additional or modified requirements
The referencing code (e.g., Section I, III, VIII) invokes and may modify Section V requirements, so both documents must be consulted together.
Question 2: Which organization issues the EN ISO 9712 standard used internationally for NDT personnel qualification?
- ASNT
- ISO/CEN (Correct answer)
- IAEA
- AWS
Correct answer: ISO/CEN
EN ISO 9712 is published jointly by the International Organization for Standardization (ISO) and the European Committee for Standardization (CEN).
Question 3: In ASME B31.3 Process Piping, what is the required volumetric examination percentage for normal fluid service welds?
- 0%
- 5%
- 10% (Correct answer)
- 100%
Correct answer: 10%
ASME B31.3 requires 5% random radiographic or ultrasonic examination of welds in normal fluid service as the base examination requirement.
Question 4: What does the AWS D1.1 'prequalified joint' designation mean for NDT purposes?
- The joint is exempt from all NDT requirements
- The joint design has pre-established welding parameters that may reduce the required procedure qualification testing (Correct answer)
- The joint has already passed all NDT inspections
- The joint requires enhanced NDT beyond standard requirements
Correct answer: The joint design has pre-established welding parameters that may reduce the required procedure qualification testing
A prequalified joint in AWS D1.1 meets established dimensional and design criteria that allow the use of prequalified WPS parameters without procedure qualification testing, but NDT requirements still apply.
Question 5: According to ASME Section V Article 6, what is the purpose of a 'PT System' qualification?
- To verify the PT technician's certification level
- To demonstrate that the combination of penetrant, cleaner, and developer materials perform adequately together (Correct answer)
- To calibrate the UV lamp intensity
- To verify the surface temperature of the part
Correct answer: To demonstrate that the combination of penetrant, cleaner, and developer materials perform adequately together
PT system qualification ensures that the specific combination of penetrant materials (penetrant, cleaner, developer) meets the minimum performance requirements as a system.
Question 6: Which ASTM standard provides acceptance criteria for radiographic examination of fusion-welded pressure vessels?
- ASTM E94
- ASTM E142
- ASTM E747
- ASTM E1032 (Correct answer)
Correct answer: ASTM E1032
ASTM E1032 covers the radiographic examination of weldments and includes acceptance criteria for fusion-welded joints in pressure vessels.
Question 7: Under the NRC (Nuclear Regulatory Commission) 10 CFR 50 Appendix B, what quality assurance criterion addresses NDT personnel qualification?
- Criterion I – Organization
- Criterion II – Quality Assurance Program
- Criterion IX – Control of Special Processes (Correct answer)
- Criterion XVI – Corrective Action
Correct answer: Criterion IX – Control of Special Processes
10 CFR 50 Appendix B Criterion IX – Control of Special Processes requires that qualified personnel using qualified procedures and equipment perform special processes including NDT.
NDT Codes and Standards 5
What is the significance of the 'referencing code' in ASME Section V?