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National Board Inservice Inspector (NB-IS) Certification
ACTUAL Exam ALL 200 QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE THIS YEAR
National Board Inservice Inspector (NB-IS) Certification ACTUAL Exam
Exam Overview – Content Areas Covered
This full practice exam covers major domains tested on the NB-IS Certification exam:
1. National Board Inspection Code (NBIC) Fundamentals
2. ASME Boiler & Pressure Vessel Code Knowledge
3. Boiler Types and Classifications
4. Pressure Relief Devices & Capacity Calculations
5. Inservice Inspection Requirements
6. Repair & Alteration Procedures (R Forms, Documentation)
7. Welding Requirements & NDE Methods
8. Jurisdictional Requirements
9. Safety Protocols & Hazard Recognition
10. Pressure Vessel Design Concepts
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11. Hydrostatic & Pressure Testing Requirements
12. Corrosion, Erosion & Damage Mechanisms
13. Recordkeeping & Compliance
Question 1
According to NBIC guidelines, what is the primary purpose of inservice inspection of pressure-
retaining items?
A. To redesign the equipment
B. To ensure continued safe operation and code compliance
C. To extend warranty coverage
D. To reduce insurance premiums
Correct Answer: B
Rationale: The core objective of NBIC inservice inspection is to verify that pressure-retaining
equipment remains safe and compliant with applicable codes throughout its operational life.
Question 2
Which organization publishes the National Board Inspection Code (NBIC)?
A. ASME
B. OSHA
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C. The National Board of Boiler and Pressure Vessel Inspectors
D. API
Correct Answer: C
Rationale: The NBIC is published by the National Board of Boiler and Pressure Vessel Inspectors
and governs inspection, repair, and alteration of pressure-retaining equipment.
Question 3
A boiler operating at 14 psi steam pressure would be classified as:
A. High-pressure boiler
B. Low-pressure steam boiler
C. Power boiler
D. Supercritical boiler
Correct Answer: B
Rationale: Steam boilers operating at or below 15 psi are classified as low-pressure steam
boilers.
Question 4
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What is the minimum required inspection interval for most power boilers under NBIC unless
jurisdictional rules differ?
A. Monthly
B. Annually
C. Every 5 years
D. Every 10 years
Correct Answer: B
Rationale: Most power boilers require annual internal and/or external inspections unless
jurisdictional requirements specify otherwise.
Question 5
When a pressure relief valve is replaced, what documentation must typically be completed?
A. Manufacturer’s Data Report
B. R-1 Form (if repair/alteration applicable)
C. OSHA incident form
D. Insurance form only
Correct Answer: B
Rationale: If replacement qualifies as a repair under NBIC rules, an R-1 form must be completed
by the authorized repair organization.
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National Board Inservice Inspector (NB-IS) Certification
ACTUAL Exam ALL 200 QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE THIS YEAR
National Board Inservice Inspector (NB-IS) Certification ACTUAL Exam
Exam Overview – Content Areas Covered
This full practice exam covers major domains tested on the NB-IS Certification exam:
1. National Board Inspection Code (NBIC) Fundamentals
2. ASME Boiler & Pressure Vessel Code Knowledge
3. Boiler Types and Classifications
4. Pressure Relief Devices & Capacity Calculations
5. Inservice Inspection Requirements
6. Repair & Alteration Procedures (R Forms, Documentation)
7. Welding Requirements & NDE Methods
8. Jurisdictional Requirements
9. Safety Protocols & Hazard Recognition
10. Pressure Vessel Design Concepts
1
, Page 2 of 104
11. Hydrostatic & Pressure Testing Requirements
12. Corrosion, Erosion & Damage Mechanisms
13. Recordkeeping & Compliance
Question 1
According to NBIC guidelines, what is the primary purpose of inservice inspection of pressure-
retaining items?
A. To redesign the equipment
B. To ensure continued safe operation and code compliance
C. To extend warranty coverage
D. To reduce insurance premiums
Correct Answer: B
Rationale: The core objective of NBIC inservice inspection is to verify that pressure-retaining
equipment remains safe and compliant with applicable codes throughout its operational life.
Question 2
Which organization publishes the National Board Inspection Code (NBIC)?
A. ASME
B. OSHA
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C. The National Board of Boiler and Pressure Vessel Inspectors
D. API
Correct Answer: C
Rationale: The NBIC is published by the National Board of Boiler and Pressure Vessel Inspectors
and governs inspection, repair, and alteration of pressure-retaining equipment.
Question 3
A boiler operating at 14 psi steam pressure would be classified as:
A. High-pressure boiler
B. Low-pressure steam boiler
C. Power boiler
D. Supercritical boiler
Correct Answer: B
Rationale: Steam boilers operating at or below 15 psi are classified as low-pressure steam
boilers.
Question 4
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What is the minimum required inspection interval for most power boilers under NBIC unless
jurisdictional rules differ?
A. Monthly
B. Annually
C. Every 5 years
D. Every 10 years
Correct Answer: B
Rationale: Most power boilers require annual internal and/or external inspections unless
jurisdictional requirements specify otherwise.
Question 5
When a pressure relief valve is replaced, what documentation must typically be completed?
A. Manufacturer’s Data Report
B. R-1 Form (if repair/alteration applicable)
C. OSHA incident form
D. Insurance form only
Correct Answer: B
Rationale: If replacement qualifies as a repair under NBIC rules, an R-1 form must be completed
by the authorized repair organization.
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