Oregon Boiler Installer Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2027
Q&A| Instant Download Pdf.
1. What is the primary purpose of Oregon’s boiler and pressure vessel
installation requirements?
A. To regulate residential electrical installations
B. To establish fuel prices
C. To promote safe installation, alteration, repair, and operation of boilers
and pressure vessels
D. To regulate municipal water distribution
Rationale: Oregon’s boiler and pressure vessel requirements are designed
to protect people and property by establishing safety standards for
pressure-retaining equipment and related work.
2. Which Oregon agency administers the state boiler and pressure vessel
safety program?
A. Oregon Department of Environmental Quality
B. Oregon Health Authority
C. Oregon Building Codes Division
D. Oregon Department of Transportation
Rationale: The Building Codes Division administers Oregon’s boiler and
pressure vessel safety and licensing program.
, 3. Under Oregon law, a person engaging in the business of installing,
repairing, or altering boilers or pressure vessels generally must
possess:
A. Only a plumbing license
B. Only a general contractor license
C. An appropriate boiler contractor license
D. Only a building inspector certificate
Rationale: Oregon law requires businesses engaged in boiler or pressure
vessel installation, repair, or alteration to hold the applicable boiler
contractor license.
4. What is generally required of an employee or agent who installs,
repairs, or alters boilers or pressure vessels for a licensed business?
A. A real estate license
B. A plumbing inspector certificate
C. An appropriate boiler employee or agent license
D. A wastewater operator license
Rationale: Oregon requires individuals performing regulated boiler or
pressure vessel work as employees or agents to hold the applicable
individual license.
5. Which license class permits installation or repair of unfired pressure
vessels by a non-welded method of attachment?
A. Class 1
B. Class 2
C. Class 4
D. Class 6
Rationale: Oregon’s Class 2 Pressure Vessel Installer license covers
installation or repair of unfired pressure vessels by non-welded methods of
attachment.
, 6. What type of examination is associated with the Oregon Class 2
Pressure Vessel Installer license?
A. 1-hour, 15-question closed-book examination
B. 2-hour, 28-question open-book examination
C. 3-hour, 80-question closed-book examination
D. 4-hour, 100-question examination
Rationale: The Oregon Class 2 Pressure Vessel Installer examination is a
two-hour, 28-question open-book examination.
7. Which subject is specifically included in the Class 2 pressure vessel
installer examination?
A. Residential electrical wiring
B. Highway construction
C. Oregon Boiler and Pressure Vessel Law
D. Real estate appraisal
Rationale: The Class 2 examination tests knowledge of Oregon’s Boiler and
Pressure Vessel Law and applicable administrative and inspection
requirements.
8. Which Oregon administrative rules are particularly relevant to boiler
and pressure vessel installation licensing?
A. OAR Chapter 820
B. OAR Chapter 690
C. OAR Chapter 918, Division 225
D. OAR Chapter 839
Rationale: OAR Chapter 918, Division 225 contains Oregon’s principal
administrative rules governing boiler, pressure vessel, and pressure piping
installation, alteration, repair, and licensing.
9. What is an unfired pressure vessel?
, A. A vessel used only for combustion
B. A vessel that cannot contain pressure
C. A pressure-containing vessel that is not directly fired by combustion
D. A vessel used exclusively for electrical storage
Rationale: An unfired pressure vessel contains pressurized fluids but is not
directly subjected to combustion heat as a boiler furnace is.
10. Which component is designed specifically to protect a pressure
vessel from excessive pressure?
A. Drain valve
B. Thermometer
C. Safety or relief valve
D. Sight glass
Rationale: Safety and relief valves provide automatic pressure protection
by discharging fluid when pressure reaches the applicable set point.
11. Why must a pressure-relief device be properly sized?
A. To reduce the vessel’s weight
B. To increase corrosion
C. To provide adequate pressure-relief capacity under the applicable
design conditions
D. To eliminate the need for inspection
Rationale: A relief device must have sufficient capacity to prevent pressure
from exceeding allowable limits under credible overpressure conditions.
12. What is the maximum allowable working pressure commonly
abbreviated as?
A. BHP
B. GPM
C. MAWP
D. BTU
Questions And Correct Answers
(Verified Answers) Plus Rationale 2027
Q&A| Instant Download Pdf.
1. What is the primary purpose of Oregon’s boiler and pressure vessel
installation requirements?
A. To regulate residential electrical installations
B. To establish fuel prices
C. To promote safe installation, alteration, repair, and operation of boilers
and pressure vessels
D. To regulate municipal water distribution
Rationale: Oregon’s boiler and pressure vessel requirements are designed
to protect people and property by establishing safety standards for
pressure-retaining equipment and related work.
2. Which Oregon agency administers the state boiler and pressure vessel
safety program?
A. Oregon Department of Environmental Quality
B. Oregon Health Authority
C. Oregon Building Codes Division
D. Oregon Department of Transportation
Rationale: The Building Codes Division administers Oregon’s boiler and
pressure vessel safety and licensing program.
, 3. Under Oregon law, a person engaging in the business of installing,
repairing, or altering boilers or pressure vessels generally must
possess:
A. Only a plumbing license
B. Only a general contractor license
C. An appropriate boiler contractor license
D. Only a building inspector certificate
Rationale: Oregon law requires businesses engaged in boiler or pressure
vessel installation, repair, or alteration to hold the applicable boiler
contractor license.
4. What is generally required of an employee or agent who installs,
repairs, or alters boilers or pressure vessels for a licensed business?
A. A real estate license
B. A plumbing inspector certificate
C. An appropriate boiler employee or agent license
D. A wastewater operator license
Rationale: Oregon requires individuals performing regulated boiler or
pressure vessel work as employees or agents to hold the applicable
individual license.
5. Which license class permits installation or repair of unfired pressure
vessels by a non-welded method of attachment?
A. Class 1
B. Class 2
C. Class 4
D. Class 6
Rationale: Oregon’s Class 2 Pressure Vessel Installer license covers
installation or repair of unfired pressure vessels by non-welded methods of
attachment.
, 6. What type of examination is associated with the Oregon Class 2
Pressure Vessel Installer license?
A. 1-hour, 15-question closed-book examination
B. 2-hour, 28-question open-book examination
C. 3-hour, 80-question closed-book examination
D. 4-hour, 100-question examination
Rationale: The Oregon Class 2 Pressure Vessel Installer examination is a
two-hour, 28-question open-book examination.
7. Which subject is specifically included in the Class 2 pressure vessel
installer examination?
A. Residential electrical wiring
B. Highway construction
C. Oregon Boiler and Pressure Vessel Law
D. Real estate appraisal
Rationale: The Class 2 examination tests knowledge of Oregon’s Boiler and
Pressure Vessel Law and applicable administrative and inspection
requirements.
8. Which Oregon administrative rules are particularly relevant to boiler
and pressure vessel installation licensing?
A. OAR Chapter 820
B. OAR Chapter 690
C. OAR Chapter 918, Division 225
D. OAR Chapter 839
Rationale: OAR Chapter 918, Division 225 contains Oregon’s principal
administrative rules governing boiler, pressure vessel, and pressure piping
installation, alteration, repair, and licensing.
9. What is an unfired pressure vessel?
, A. A vessel used only for combustion
B. A vessel that cannot contain pressure
C. A pressure-containing vessel that is not directly fired by combustion
D. A vessel used exclusively for electrical storage
Rationale: An unfired pressure vessel contains pressurized fluids but is not
directly subjected to combustion heat as a boiler furnace is.
10. Which component is designed specifically to protect a pressure
vessel from excessive pressure?
A. Drain valve
B. Thermometer
C. Safety or relief valve
D. Sight glass
Rationale: Safety and relief valves provide automatic pressure protection
by discharging fluid when pressure reaches the applicable set point.
11. Why must a pressure-relief device be properly sized?
A. To reduce the vessel’s weight
B. To increase corrosion
C. To provide adequate pressure-relief capacity under the applicable
design conditions
D. To eliminate the need for inspection
Rationale: A relief device must have sufficient capacity to prevent pressure
from exceeding allowable limits under credible overpressure conditions.
12. What is the maximum allowable working pressure commonly
abbreviated as?
A. BHP
B. GPM
C. MAWP
D. BTU
