NATIONAL BOARD AUTHORIZED
INSPECTOR (AI) EXAM QUESTION AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. The primary purpose of the National Board Inspection Code (NBIC) is to:
A. Establish welding procedures
B. Govern boiler operation
C. Provide rules for inspection, repair, alteration, and rerating of pressure-
retaining items
D. Replace ASME Boiler and Pressure Vessel Code
Answer: C
Rationale: The NBIC provides uniform rules for inspection, repair, alteration, and
rerating of boilers, pressure vessels, and pressure-relief devices after they are
placed in service.
2. Which ASME Code section covers the construction of power boilers?
A. Section II
B. Section I
C. Section IV
D. Section VIII
Answer: B
Rationale: ASME Section I governs the construction of power boilers.
, 3. An Authorized Inspector is commissioned by:
A. ASME
B. Jurisdiction
C. National Board of Boiler and Pressure Vessel Inspectors
D. Insurance company
Answer: C
Rationale: Authorized Inspectors are commissioned by the National Board after
meeting qualification requirements.
4. Which document establishes minimum requirements for pressure vessel
construction?
A. NBIC Part 2
B. ASME Section IX
C. ASME Section VIII
D. API 510
Answer: C
Rationale: ASME Section VIII specifies minimum construction requirements for
pressure vessels.
5. Who has the final authority to accept a boiler installation?
A. Owner-user
B. Manufacturer
C. Authorized Inspector
D. Jurisdiction
Answer: D
Rationale: The Jurisdiction has the legal authority to accept or reject boiler and
pressure vessel installations.
6. A boiler stamped with the “S” symbol indicates:
A. Heating boiler
B. Pressure vessel
, C. Power boiler
D. Miniature boiler
Answer: C
Rationale: The “S” symbol stamp identifies power boilers constructed under
ASME Section I.
7. Which ASME Section covers materials?
A. Section V
B. Section II
C. Section IX
D. Section X
Answer: B
Rationale: ASME Section II contains material specifications and properties.
8. The maximum allowable working pressure (MAWP) is:
A. Test pressure
B. Operating pressure
C. The maximum pressure permitted at the top of the vessel in normal
operation
D. Design pressure minus corrosion allowance
Answer: C
Rationale: MAWP is the maximum pressure allowed at the top of the vessel at
designated temperature.
9. Which device protects a boiler from overpressure?
A. Check valve
B. Blowdown valve
C. Safety valve
D. Pressure gauge
INSPECTOR (AI) EXAM QUESTION AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. The primary purpose of the National Board Inspection Code (NBIC) is to:
A. Establish welding procedures
B. Govern boiler operation
C. Provide rules for inspection, repair, alteration, and rerating of pressure-
retaining items
D. Replace ASME Boiler and Pressure Vessel Code
Answer: C
Rationale: The NBIC provides uniform rules for inspection, repair, alteration, and
rerating of boilers, pressure vessels, and pressure-relief devices after they are
placed in service.
2. Which ASME Code section covers the construction of power boilers?
A. Section II
B. Section I
C. Section IV
D. Section VIII
Answer: B
Rationale: ASME Section I governs the construction of power boilers.
, 3. An Authorized Inspector is commissioned by:
A. ASME
B. Jurisdiction
C. National Board of Boiler and Pressure Vessel Inspectors
D. Insurance company
Answer: C
Rationale: Authorized Inspectors are commissioned by the National Board after
meeting qualification requirements.
4. Which document establishes minimum requirements for pressure vessel
construction?
A. NBIC Part 2
B. ASME Section IX
C. ASME Section VIII
D. API 510
Answer: C
Rationale: ASME Section VIII specifies minimum construction requirements for
pressure vessels.
5. Who has the final authority to accept a boiler installation?
A. Owner-user
B. Manufacturer
C. Authorized Inspector
D. Jurisdiction
Answer: D
Rationale: The Jurisdiction has the legal authority to accept or reject boiler and
pressure vessel installations.
6. A boiler stamped with the “S” symbol indicates:
A. Heating boiler
B. Pressure vessel
, C. Power boiler
D. Miniature boiler
Answer: C
Rationale: The “S” symbol stamp identifies power boilers constructed under
ASME Section I.
7. Which ASME Section covers materials?
A. Section V
B. Section II
C. Section IX
D. Section X
Answer: B
Rationale: ASME Section II contains material specifications and properties.
8. The maximum allowable working pressure (MAWP) is:
A. Test pressure
B. Operating pressure
C. The maximum pressure permitted at the top of the vessel in normal
operation
D. Design pressure minus corrosion allowance
Answer: C
Rationale: MAWP is the maximum pressure allowed at the top of the vessel at
designated temperature.
9. Which device protects a boiler from overpressure?
A. Check valve
B. Blowdown valve
C. Safety valve
D. Pressure gauge
