Kentucky Boiler Contractor Exam Actual Test Bank 2026/2027
Comprehensive Practice Questions And Study Guide Complete
Accurate Exam Approved Questions With Well Elaborated
Answers And Detailed Rationales (100% Correct Verified
Solutions) Latest
Question 1: Under Kentucky Revised Statutes Chapter 236, which of the
following best defines a "Power Boiler"?
A. A boiler used solely for heating a single residence
B. A boiler that produces steam at a pressure greater than 15 psi gauge
C. A low-temperature water heater for domestic use
D. Any pressure vessel that contains water
Correct Answer: B. A boiler that produces steam at a pressure greater than
15 psi gauge
Rationale: A power boiler is defined as a boiler that produces steam at a
pressure greater than 15 psi gauge, distinguishing it from low-pressure heating
boilers. This definition is established under KRS Chapter 236 and aligns with ASME
Section I classifications. Options A and C describe low-pressure heating boilers or
domestic water heaters, which fall under different code sections. Option D is too
broad and does not reflect the pressure threshold that defines a power boiler.
Question 2: According to 815 KAR 15:080, what is the minimum passing score
required for the Kentucky boiler and pressure vessel contractor examination?
A. 60 percent
B. 65 percent
C. 70 percent
,D. 75 percent
Correct Answer: C. 70 percent
Rationale: Kentucky Administrative Regulation 815 KAR 15:080, Section 2(b),
explicitly states that an applicant shall successfully complete the examination with
a passing score of at least seventy (70) percent. Options A, B, and D are incorrect
because they do not match the regulatory requirement established by the
Kentucky Board of Boiler and Pressure Vessel Rules.
Question 3: A boiler contractor in Kentucky must hold a valid certification issued
by which authority?
A. Kentucky Department of Environmental Protection
B. Kentucky Labor Cabinet, Division of Occupational Safety and Health Compliance
C. Kentucky Department of Housing, Buildings and Construction
D. Kentucky Board of Boiler and Pressure Vessel Rules
Correct Answer: C. Kentucky Department of Housing, Buildings and
Construction
Rationale: Under Kentucky Revised Statutes Chapter 236, the Department of
Housing, Buildings and Construction (HBC) has authority over boiler and pressure
vessel safety, including contractor certification. The Division of Plumbing, Boilers,
and Pressure Vessels operates within HBC. Options A, B, and D are incorrect
because they do not have statutory authority over boiler contractor licensing in
Kentucky.
Question 4: How long is a passing score on the Kentucky boiler contractor
examination valid?
A. One year
,B. Two years
C. Three years
D. Ten years
Correct Answer: C. Three years
Rationale: According to 815 KAR 15:080, Section 2(c), a passing score on the
examination shall be valid for a period of three (3) years. This means an applicant
who passes the exam has three years to obtain an initial license before the score
expires. Options A, B, and D do not reflect the regulatory validity period
established by Kentucky law.
Question 5: Under 815 KAR 15:025, installation of all boilers and pressure
vessels in Kentucky shall conform to which edition of the National Board
Inspection Code Part 1?
A. 2015 edition
B. 2019 edition
C. 2021 edition
D. 2025 edition
Correct Answer: D. 2025 edition
Rationale: 815 KAR 15:025, Section 1(3), requires that installation of all boilers
and pressure vessels shall conform to the National Board Inspection Code Part 1,
2025 edition. The regulation was amended to adopt the most current edition of
the NBIC. Options A, B, and C reference outdated editions that are no longer the
adopted standard in Kentucky.
Question 6: What is the primary purpose of a safety valve on a boiler?
A. To regulate steam pressure during normal operation
, B. To prevent overpressure by automatically relieving excess pressure
C. To control the water level in the boiler drum
D. To regulate fuel flow to the burner
Correct Answer: B. To prevent overpressure by automatically relieving excess
pressure
Rationale: A safety valve is a critical protective device designed to
automatically open and relieve pressure when the boiler pressure approaches the
maximum allowable working pressure (MAWP), thereby preventing catastrophic
failure. Option A is incorrect because pressure regulation during normal operation
is the function of a pressure control, not a safety valve. Option C describes a low-
water cutoff or feedwater regulator. Option D describes a fuel control valve or
combustion control system.
Question 7: According to ASME Section I, at what pressure must a boiler be
classified as a power boiler?
A. Above 15 psi
B. Above 30 psi
C. Above 100 psi
D. Above 160 psi
Correct Answer: A. Above 15 psi
Rationale: ASME Section I governs power boilers, which are defined as boilers
that generate steam at pressures greater than 15 psi. This threshold is the
fundamental distinction between power boilers (Section I) and heating boilers
(Section IV). Option B, 30 psi, relates to certain pressure vessel classifications.
Options C and D represent higher pressure ranges that still fall under power boiler
classification but are not the threshold that defines it.
Comprehensive Practice Questions And Study Guide Complete
Accurate Exam Approved Questions With Well Elaborated
Answers And Detailed Rationales (100% Correct Verified
Solutions) Latest
Question 1: Under Kentucky Revised Statutes Chapter 236, which of the
following best defines a "Power Boiler"?
A. A boiler used solely for heating a single residence
B. A boiler that produces steam at a pressure greater than 15 psi gauge
C. A low-temperature water heater for domestic use
D. Any pressure vessel that contains water
Correct Answer: B. A boiler that produces steam at a pressure greater than
15 psi gauge
Rationale: A power boiler is defined as a boiler that produces steam at a
pressure greater than 15 psi gauge, distinguishing it from low-pressure heating
boilers. This definition is established under KRS Chapter 236 and aligns with ASME
Section I classifications. Options A and C describe low-pressure heating boilers or
domestic water heaters, which fall under different code sections. Option D is too
broad and does not reflect the pressure threshold that defines a power boiler.
Question 2: According to 815 KAR 15:080, what is the minimum passing score
required for the Kentucky boiler and pressure vessel contractor examination?
A. 60 percent
B. 65 percent
C. 70 percent
,D. 75 percent
Correct Answer: C. 70 percent
Rationale: Kentucky Administrative Regulation 815 KAR 15:080, Section 2(b),
explicitly states that an applicant shall successfully complete the examination with
a passing score of at least seventy (70) percent. Options A, B, and D are incorrect
because they do not match the regulatory requirement established by the
Kentucky Board of Boiler and Pressure Vessel Rules.
Question 3: A boiler contractor in Kentucky must hold a valid certification issued
by which authority?
A. Kentucky Department of Environmental Protection
B. Kentucky Labor Cabinet, Division of Occupational Safety and Health Compliance
C. Kentucky Department of Housing, Buildings and Construction
D. Kentucky Board of Boiler and Pressure Vessel Rules
Correct Answer: C. Kentucky Department of Housing, Buildings and
Construction
Rationale: Under Kentucky Revised Statutes Chapter 236, the Department of
Housing, Buildings and Construction (HBC) has authority over boiler and pressure
vessel safety, including contractor certification. The Division of Plumbing, Boilers,
and Pressure Vessels operates within HBC. Options A, B, and D are incorrect
because they do not have statutory authority over boiler contractor licensing in
Kentucky.
Question 4: How long is a passing score on the Kentucky boiler contractor
examination valid?
A. One year
,B. Two years
C. Three years
D. Ten years
Correct Answer: C. Three years
Rationale: According to 815 KAR 15:080, Section 2(c), a passing score on the
examination shall be valid for a period of three (3) years. This means an applicant
who passes the exam has three years to obtain an initial license before the score
expires. Options A, B, and D do not reflect the regulatory validity period
established by Kentucky law.
Question 5: Under 815 KAR 15:025, installation of all boilers and pressure
vessels in Kentucky shall conform to which edition of the National Board
Inspection Code Part 1?
A. 2015 edition
B. 2019 edition
C. 2021 edition
D. 2025 edition
Correct Answer: D. 2025 edition
Rationale: 815 KAR 15:025, Section 1(3), requires that installation of all boilers
and pressure vessels shall conform to the National Board Inspection Code Part 1,
2025 edition. The regulation was amended to adopt the most current edition of
the NBIC. Options A, B, and C reference outdated editions that are no longer the
adopted standard in Kentucky.
Question 6: What is the primary purpose of a safety valve on a boiler?
A. To regulate steam pressure during normal operation
, B. To prevent overpressure by automatically relieving excess pressure
C. To control the water level in the boiler drum
D. To regulate fuel flow to the burner
Correct Answer: B. To prevent overpressure by automatically relieving excess
pressure
Rationale: A safety valve is a critical protective device designed to
automatically open and relieve pressure when the boiler pressure approaches the
maximum allowable working pressure (MAWP), thereby preventing catastrophic
failure. Option A is incorrect because pressure regulation during normal operation
is the function of a pressure control, not a safety valve. Option C describes a low-
water cutoff or feedwater regulator. Option D describes a fuel control valve or
combustion control system.
Question 7: According to ASME Section I, at what pressure must a boiler be
classified as a power boiler?
A. Above 15 psi
B. Above 30 psi
C. Above 100 psi
D. Above 160 psi
Correct Answer: A. Above 15 psi
Rationale: ASME Section I governs power boilers, which are defined as boilers
that generate steam at pressures greater than 15 psi. This threshold is the
fundamental distinction between power boilers (Section I) and heating boilers
(Section IV). Option B, 30 psi, relates to certain pressure vessel classifications.
Options C and D represent higher pressure ranges that still fall under power boiler
classification but are not the threshold that defines it.
