NFPA 85 Boiler and Combustion
Systems Hazards Code Exam With
Actual Questions & Verified
Answers,Plus Rationales/Expert
Verified For Guaranteed Pass /2026
/Latest Update/Instant Download Pdf
1. What is the primary purpose of NFPA 85?
A. To provide building codes for residential construction
B. To minimize hazards associated with boilers and combustion
systems
C. To regulate electrical wiring in industrial facilities
D. To establish water treatment standards
Answer: B
Rationale: NFPA 85 focuses on the safe design, operation, and
maintenance of boilers and combustion systems to minimize fire,
explosion, and other hazards.
2. Which type of boiler is covered under NFPA 85?
A. Low-pressure steam boilers only
B. High-pressure and high-temperature water boilers
C. Domestic water heaters
D. Solar water heaters
,Answer: B
Rationale: NFPA 85 applies to high-pressure and high-temperature
water and steam boilers, as they pose significant combustion
hazards.
3. According to NFPA 85, how often must boiler safety devices be
inspected?
A. Every 6 months
B. Annually
C. Only at installation
D. Every 5 years
Answer: B
Rationale: Safety devices such as pressure relief valves must be
inspected at least annually to ensure proper operation.
4. What is the main hazard associated with fuel oil in boilers?
A. Corrosion
B. Explosion and fire
C. Water contamination
D. Electrical shock
Answer: B
Rationale: Fuel oil is combustible, and improper handling or leaks
can cause fires or explosions.
5. NFPA 85 requires proper interlocks to prevent which situation?
A. Operation without proper water level
B. Boiler running during daylight only
,C. Combustion system maintenance
D. Boiler painting procedures
Answer: A
Rationale: Interlocks ensure that boilers cannot operate under
unsafe conditions, such as low water levels, preventing explosions.
6. What is the minimum clearance between a boiler and
combustible materials?
A. 1 inch
B. 6 inches
C. Per manufacturer’s instructions and NFPA 85 guidelines
D. 24 inches
Answer: C
Rationale: Clearance requirements vary by boiler design and fuel
type; NFPA 85 and manufacturer guidelines must both be followed.
7. What does NFPA 85 recommend for boiler startup procedures?
A. Start full load immediately
B. Follow a documented step-by-step procedure
C. Only one operator is needed
D. Manual ignition only
Answer: B
Rationale: Proper startup procedures reduce risk of fire, explosion,
or mechanical damage and should be documented and followed.
8. What type of fuel is subject to explosion hazards in boilers
according to NFPA 85?
, A. Natural gas
B. Fuel oil
C. Pulverized coal
D. All of the above
Answer: D
Rationale: All these fuels can create explosive mixtures if not
properly managed, and NFPA 85 addresses safe handling and
combustion.
9. Which of the following is a key component of a boiler
combustion control system?
A. Water softener
B. Burner management system (BMS)
C. Steam trap
D. Feedwater tank
Answer: B
Rationale: A Burner Management System ensures safe startup,
operation, and shutdown of the combustion process.
10. NFPA 85 requires emergency shutdowns to be:
A. Manual only
B. Automatic, manual, or both, depending on the system
C. Optional
D. Remote controlled only
Answer: B
Rationale: Emergency shutdowns must be capable of rapid action to
prevent hazards; NFPA 85 allows automatic, manual, or combined
approaches depending on system design.
Systems Hazards Code Exam With
Actual Questions & Verified
Answers,Plus Rationales/Expert
Verified For Guaranteed Pass /2026
/Latest Update/Instant Download Pdf
1. What is the primary purpose of NFPA 85?
A. To provide building codes for residential construction
B. To minimize hazards associated with boilers and combustion
systems
C. To regulate electrical wiring in industrial facilities
D. To establish water treatment standards
Answer: B
Rationale: NFPA 85 focuses on the safe design, operation, and
maintenance of boilers and combustion systems to minimize fire,
explosion, and other hazards.
2. Which type of boiler is covered under NFPA 85?
A. Low-pressure steam boilers only
B. High-pressure and high-temperature water boilers
C. Domestic water heaters
D. Solar water heaters
,Answer: B
Rationale: NFPA 85 applies to high-pressure and high-temperature
water and steam boilers, as they pose significant combustion
hazards.
3. According to NFPA 85, how often must boiler safety devices be
inspected?
A. Every 6 months
B. Annually
C. Only at installation
D. Every 5 years
Answer: B
Rationale: Safety devices such as pressure relief valves must be
inspected at least annually to ensure proper operation.
4. What is the main hazard associated with fuel oil in boilers?
A. Corrosion
B. Explosion and fire
C. Water contamination
D. Electrical shock
Answer: B
Rationale: Fuel oil is combustible, and improper handling or leaks
can cause fires or explosions.
5. NFPA 85 requires proper interlocks to prevent which situation?
A. Operation without proper water level
B. Boiler running during daylight only
,C. Combustion system maintenance
D. Boiler painting procedures
Answer: A
Rationale: Interlocks ensure that boilers cannot operate under
unsafe conditions, such as low water levels, preventing explosions.
6. What is the minimum clearance between a boiler and
combustible materials?
A. 1 inch
B. 6 inches
C. Per manufacturer’s instructions and NFPA 85 guidelines
D. 24 inches
Answer: C
Rationale: Clearance requirements vary by boiler design and fuel
type; NFPA 85 and manufacturer guidelines must both be followed.
7. What does NFPA 85 recommend for boiler startup procedures?
A. Start full load immediately
B. Follow a documented step-by-step procedure
C. Only one operator is needed
D. Manual ignition only
Answer: B
Rationale: Proper startup procedures reduce risk of fire, explosion,
or mechanical damage and should be documented and followed.
8. What type of fuel is subject to explosion hazards in boilers
according to NFPA 85?
, A. Natural gas
B. Fuel oil
C. Pulverized coal
D. All of the above
Answer: D
Rationale: All these fuels can create explosive mixtures if not
properly managed, and NFPA 85 addresses safe handling and
combustion.
9. Which of the following is a key component of a boiler
combustion control system?
A. Water softener
B. Burner management system (BMS)
C. Steam trap
D. Feedwater tank
Answer: B
Rationale: A Burner Management System ensures safe startup,
operation, and shutdown of the combustion process.
10. NFPA 85 requires emergency shutdowns to be:
A. Manual only
B. Automatic, manual, or both, depending on the system
C. Optional
D. Remote controlled only
Answer: B
Rationale: Emergency shutdowns must be capable of rapid action to
prevent hazards; NFPA 85 allows automatic, manual, or combined
approaches depending on system design.
