Page 1 of 196
Nevada (NV) A 20 Industrial Piping Contractor
Practice Exam Questions & Rationales
VERIFIED SOLUTIONS LATEST UPDATE THIS
YEAR
Nevada (NV) A-20 Industrial Piping Contractor Practice Exam
Welcome to this comprehensive practice exam for the Nevada A-20 Industrial Piping Contractor
license. This exam is designed to assess your knowledge of industrial piping systems, materials,
installation methods, safety, and the business and legal responsibilities required by the Nevada
State Contractors Board (NSCB) . The A-20 license authorizes the fabrication and installation of
pipes for steam, gases, chemicals, and other substances required for industrial operations,
including related excavation and trenching .
Exam Structure & Key Reference Codes
This exam is structured to mirror the content domains of the actual PSI-administered exam .
Key knowledge areas include:
• ASME B31 Series: B31.1 (Power Piping) and B31.3 (Process Piping)
• Nevada State Contractors Board (NSCB) regulations
• OSHA regulations including 29 CFR 1926 (Construction) and excavation safety (Subpart
P)
• Uniform Mechanical Code (UMC)
• Materials, Welding, Valves & Flow Systems
PRACTICE EXAM QUESTIONS
Section 1: Codes, Standards & Regulations
Question 1
Which ASME code is the primary reference for the design and construction of process piping in
chemical plants, refineries, and industrial facilities?
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A) ASME B31.1
B) ASME B31.3
C) ASME B31.8
D) ASME B31.9
Answer: B
ASME B31.3 is the Process Piping Code, which specifically covers chemical, petroleum,
pharmaceutical, and industrial process piping systems. B31.1 is for Power Piping, B31.8 covers
Gas Transmission and Distribution, and B31.9 addresses Building Services Piping .
Question 2
Which Nevada agency is responsible for issuing and regulating the A-20 Industrial Piping
contractor license?
A) Nevada Department of Transportation
B) Nevada Occupational Safety and Health Administration
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C) Nevada State Contractors Board (NSCB)
D) Nevada Department of Energy
Answer: C
The Nevada State Contractors Board (NSCB) is the regulatory authority that issues licenses and
enforces compliance for all contractor classifications in Nevada, including the A-20 Industrial
Piping license .
Question 3
A deviation from an engineered piping drawing is required in the field. What is the proper
course of action?
A) Proceed with the change after verbal approval from the foreman.
B) Proceed with the change, as field modifications are always acceptable.
C) Obtain written approval from the engineer of record.
D) Document the change in the daily log and proceed.
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Answer: C
Any deviation from engineered drawings must be approved in writing by the engineer of record
to ensure the change is structurally and operationally sound and to maintain proper
documentation for liability and inspection purposes .
Section 2: Materials & Components
Question 4
Which pipe material is best suited for a high-temperature steam system?
A) PVC (Polyvinyl Chloride)
B) CPVC (Chlorinated Polyvinyl Chloride)
C) Carbon Steel
D) ABS (Acrylonitrile Butadiene Styrene)
Answer: C
Nevada (NV) A 20 Industrial Piping Contractor
Practice Exam Questions & Rationales
VERIFIED SOLUTIONS LATEST UPDATE THIS
YEAR
Nevada (NV) A-20 Industrial Piping Contractor Practice Exam
Welcome to this comprehensive practice exam for the Nevada A-20 Industrial Piping Contractor
license. This exam is designed to assess your knowledge of industrial piping systems, materials,
installation methods, safety, and the business and legal responsibilities required by the Nevada
State Contractors Board (NSCB) . The A-20 license authorizes the fabrication and installation of
pipes for steam, gases, chemicals, and other substances required for industrial operations,
including related excavation and trenching .
Exam Structure & Key Reference Codes
This exam is structured to mirror the content domains of the actual PSI-administered exam .
Key knowledge areas include:
• ASME B31 Series: B31.1 (Power Piping) and B31.3 (Process Piping)
• Nevada State Contractors Board (NSCB) regulations
• OSHA regulations including 29 CFR 1926 (Construction) and excavation safety (Subpart
P)
• Uniform Mechanical Code (UMC)
• Materials, Welding, Valves & Flow Systems
PRACTICE EXAM QUESTIONS
Section 1: Codes, Standards & Regulations
Question 1
Which ASME code is the primary reference for the design and construction of process piping in
chemical plants, refineries, and industrial facilities?
,Page 2 of 196
A) ASME B31.1
B) ASME B31.3
C) ASME B31.8
D) ASME B31.9
Answer: B
ASME B31.3 is the Process Piping Code, which specifically covers chemical, petroleum,
pharmaceutical, and industrial process piping systems. B31.1 is for Power Piping, B31.8 covers
Gas Transmission and Distribution, and B31.9 addresses Building Services Piping .
Question 2
Which Nevada agency is responsible for issuing and regulating the A-20 Industrial Piping
contractor license?
A) Nevada Department of Transportation
B) Nevada Occupational Safety and Health Administration
,Page 3 of 196
C) Nevada State Contractors Board (NSCB)
D) Nevada Department of Energy
Answer: C
The Nevada State Contractors Board (NSCB) is the regulatory authority that issues licenses and
enforces compliance for all contractor classifications in Nevada, including the A-20 Industrial
Piping license .
Question 3
A deviation from an engineered piping drawing is required in the field. What is the proper
course of action?
A) Proceed with the change after verbal approval from the foreman.
B) Proceed with the change, as field modifications are always acceptable.
C) Obtain written approval from the engineer of record.
D) Document the change in the daily log and proceed.
, Page 4 of 196
Answer: C
Any deviation from engineered drawings must be approved in writing by the engineer of record
to ensure the change is structurally and operationally sound and to maintain proper
documentation for liability and inspection purposes .
Section 2: Materials & Components
Question 4
Which pipe material is best suited for a high-temperature steam system?
A) PVC (Polyvinyl Chloride)
B) CPVC (Chlorinated Polyvinyl Chloride)
C) Carbon Steel
D) ABS (Acrylonitrile Butadiene Styrene)
Answer: C
