Equipment Interview Questions Updated ((new)) | Static
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Part 5: Advanced & Scenario-Based Questions (For Senior Roles)
These separate the junior engineer from the lead inspector. static equipment interview questions updated
Q12. Name four Non-Destructive Testing (NDT) methods you would specify for a new stainless steel reactor.
Answer (Updated):
- PAUT (Phased Array) – For volumetric weld inspection (replacing RT due to no radiation risk).
- Liquid Penetrant Testing (PT) – For surface crack detection (Stainless steel is non-magnetic, so MT won't work on austenitic SS).
- Eddy Current Array (ECA) – For tube inspection.
- Ferrite Testing – To ensure duplex/super duplex welds have the correct ferrite/austenite ratio (30-60%).
Q8. What is the significance of ASME Section VIII, Division 2, versus Division 1?
Answer:
- Div. 1: "Rules" for typical vessels. Conservative, simpler, lower cost.
- Div. 2: "Alternative Rules" (Stress analysis). Allows higher allowable stresses (2/3 yield vs 1/3.5 ultimate). Results in thinner, lighter vessels but requires rigorous FEA and proof testing. Used for high-pressure or cryogenic service.