KENTUCKY BOILER CONTRACTOR
EXAM 2026/2027: 300 PRACTICE
QUESTIONS & VERIFIED ANSWERS
WITH RATIONALES (KRS 236 &
ASME)
SECTION 1: KENTUCKY LICENSING, STATUTES, AND
REGULATIONS
(Questions 1–60 — Focus: KRS Chapter 236, 815 KAR Chapter 15, license classes, fees,
administrative requirements)
1. Under Kentucky's boiler and pressure-vessel contractor licensing system,
which license class has an unlimited scope of work?
A. Class A
B. Class B
C. Class C
D. Class D
Answer: A. Class A
Rationale: Kentucky regulation identifies Class A as having an unlimited scope. Class B
and Class C have specifically defined limitations regarding pressure and type of
equipment .
2. Which work is specifically within the scope of a Kentucky Class B boiler
contractor license?
A. All pressure vessels regardless of pressure
B. Low-pressure steam boilers and piping
C. Only cryogenic vessels
D. Only power boilers above 15 psi
Answer: B. Low-pressure steam boilers and piping
,Rationale: Class B includes low-pressure steam boilers and piping, hot-water heating
boilers and piping, hot-water supply boilers, pool heaters, hot-water storage tanks, and
certain pressure vessels up to 200 psi .
3. A Kentucky Class C license primarily authorizes work involving:
A. Unlimited boilers
B. Power boilers
C. Specified pressure vessels
D. All steam piping
Answer: C. Specified pressure vessels
Rationale: Class C is limited to pressure vessels, including specified cryogenic bulk
tanks, CO₂ beverage tanks, certain compressed-air receivers, associated piping, and
jacketed steam cooking kettles .
4. What minimum examination score is required to pass a Kentucky Class A, B,
or C boiler contractor examination?
A. 60%
B. 65%
C. 70%
D. 75%
Answer: C. 70%
Rationale: Kentucky's regulation establishes 70% as the passing score for Class A, B,
and C examinations .
5. A passing Kentucky boiler contractor examination score is currently valid for:
A. 1 year
B. 2 years
C. 3 years
D. 5 years
Answer: C. 3 years
Rationale: The regulation specifies that a passing examination score remains valid for
three years .
,6. Which Kentucky statute is specifically associated with boilers and pressure
vessels?
A. KRS Chapter 118
B. KRS Chapter 236
C. KRS Chapter 338
D. KRS Chapter 342
Answer: B. KRS Chapter 236
Rationale: KRS Chapter 236 is the principal Kentucky statutory chapter governing
boilers and pressure vessels and is specifically included in the contractor examination
scope .
7. Which Kentucky administrative regulation chapter is specifically included in
the boiler contractor examination?
A. 815 KAR Chapter 8
B. 815 KAR Chapter 10
C. 815 KAR Chapter 15
D. 815 KAR Chapter 35
Answer: C. 815 KAR Chapter 15
Rationale: Kentucky identifies 815 KAR Chapter 15 as examination material for boiler
and pressure-vessel contractor applicants .
8. Which inspection code is specifically included in the Kentucky boiler
contractor examination scope?
A. NEC
B. IMC
C. NBIC Part I
D. NFPA 70E
Answer: C. NBIC Part I
Rationale: The regulation specifically lists the National Board Inspection Code (NBIC)
Part I as part of the required examination body of knowledge .
9. Under KRS 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
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 .
10. 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
Answer: C. Kentucky Department of Housing, Buildings and Construction
Rationale: Under KRS 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 .
11. What is the minimum age requirement for a boiler and pressure vessel
contractor license applicant in Kentucky?
A. 16 years of age
B. 18 years of age
C. 21 years of age
D. 25 years of age
Answer: B. 18 years of age
Rationale: Kentucky regulations require applicants to be at least 18 years of age to
obtain a boiler and pressure vessel contractor license .
12. What is the nonrefundable initial license fee for a Kentucky Boiler and
Pressure Vessel Contractor License?
A. $100
EXAM 2026/2027: 300 PRACTICE
QUESTIONS & VERIFIED ANSWERS
WITH RATIONALES (KRS 236 &
ASME)
SECTION 1: KENTUCKY LICENSING, STATUTES, AND
REGULATIONS
(Questions 1–60 — Focus: KRS Chapter 236, 815 KAR Chapter 15, license classes, fees,
administrative requirements)
1. Under Kentucky's boiler and pressure-vessel contractor licensing system,
which license class has an unlimited scope of work?
A. Class A
B. Class B
C. Class C
D. Class D
Answer: A. Class A
Rationale: Kentucky regulation identifies Class A as having an unlimited scope. Class B
and Class C have specifically defined limitations regarding pressure and type of
equipment .
2. Which work is specifically within the scope of a Kentucky Class B boiler
contractor license?
A. All pressure vessels regardless of pressure
B. Low-pressure steam boilers and piping
C. Only cryogenic vessels
D. Only power boilers above 15 psi
Answer: B. Low-pressure steam boilers and piping
,Rationale: Class B includes low-pressure steam boilers and piping, hot-water heating
boilers and piping, hot-water supply boilers, pool heaters, hot-water storage tanks, and
certain pressure vessels up to 200 psi .
3. A Kentucky Class C license primarily authorizes work involving:
A. Unlimited boilers
B. Power boilers
C. Specified pressure vessels
D. All steam piping
Answer: C. Specified pressure vessels
Rationale: Class C is limited to pressure vessels, including specified cryogenic bulk
tanks, CO₂ beverage tanks, certain compressed-air receivers, associated piping, and
jacketed steam cooking kettles .
4. What minimum examination score is required to pass a Kentucky Class A, B,
or C boiler contractor examination?
A. 60%
B. 65%
C. 70%
D. 75%
Answer: C. 70%
Rationale: Kentucky's regulation establishes 70% as the passing score for Class A, B,
and C examinations .
5. A passing Kentucky boiler contractor examination score is currently valid for:
A. 1 year
B. 2 years
C. 3 years
D. 5 years
Answer: C. 3 years
Rationale: The regulation specifies that a passing examination score remains valid for
three years .
,6. Which Kentucky statute is specifically associated with boilers and pressure
vessels?
A. KRS Chapter 118
B. KRS Chapter 236
C. KRS Chapter 338
D. KRS Chapter 342
Answer: B. KRS Chapter 236
Rationale: KRS Chapter 236 is the principal Kentucky statutory chapter governing
boilers and pressure vessels and is specifically included in the contractor examination
scope .
7. Which Kentucky administrative regulation chapter is specifically included in
the boiler contractor examination?
A. 815 KAR Chapter 8
B. 815 KAR Chapter 10
C. 815 KAR Chapter 15
D. 815 KAR Chapter 35
Answer: C. 815 KAR Chapter 15
Rationale: Kentucky identifies 815 KAR Chapter 15 as examination material for boiler
and pressure-vessel contractor applicants .
8. Which inspection code is specifically included in the Kentucky boiler
contractor examination scope?
A. NEC
B. IMC
C. NBIC Part I
D. NFPA 70E
Answer: C. NBIC Part I
Rationale: The regulation specifically lists the National Board Inspection Code (NBIC)
Part I as part of the required examination body of knowledge .
9. Under KRS 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
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 .
10. 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
Answer: C. Kentucky Department of Housing, Buildings and Construction
Rationale: Under KRS 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 .
11. What is the minimum age requirement for a boiler and pressure vessel
contractor license applicant in Kentucky?
A. 16 years of age
B. 18 years of age
C. 21 years of age
D. 25 years of age
Answer: B. 18 years of age
Rationale: Kentucky regulations require applicants to be at least 18 years of age to
obtain a boiler and pressure vessel contractor license .
12. What is the nonrefundable initial license fee for a Kentucky Boiler and
Pressure Vessel Contractor License?
A. $100
