[Jul 29, 2026] Free NFPA CFPS Exam Questions and Answer
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NEW QUESTION # 59
A public supply system with a required fire flow of 4,500 gpm (17,033 lpm) should be able to maintain that flow for a duration of:
- A. two hours
- B. five hours
- C. three hours
- D. four hours
Answer: C
NEW QUESTION # 60
Foundations for water tanks and towers should be built of concrete with compressive strength of NOT less than how many psi (MPa)?
- A. 5,000 (34.47 MPa)
- B. 4,000 (27.58 MPa)
- C. 3,000 (20.69 MPa)
- D. 2,000 (13.79 MPa)
Answer: A
Explanation:
NEW QUESTION # 61
In a large-scale test organized by the Fire Protection Research Foundation (FPRF) to study the interaction between sprinklers, roof vents, and draft curtains, what factor made the test results difficult to interpret for use in field applications?
- A. The controlled nature of the tests
- B. The number of vents used during the tests
- C. External environmental forces on the test building
- D. The use of an exhaust to an abatement system
Answer: D
Explanation:
The use of an exhaust to an abatement system during the large-scale tests made the test results difficult to interpret for use in field applications. The exhaust system was used to reduce the environmental impact of the tests, but it also altered the natural buoyancy-driven flow of the smoke and heat through the vents and draft curtains. This created a pressure difference between the inside and outside of the test building, which affected the performance of the sprinklers, vents, and draft curtains. Therefore, the test results may not accurately reflect the conditions that would occur in real buildings without an exhaust system.
NEW QUESTION # 62
What type of smoke management method is referred to as smoke purging, smoke removal, smoke exhaust, or smoke extraction?
- A. Airflow
- B. Compartmentation
- C. Pressurization
- D. Dilution
Answer: A
Explanation:
Explanation
Smoke purging, smoke removal, smoke exhaust, or smoke extraction are different terms for the same type of smoke management method, which is airflow. Airflow is the method of controlling smoke by creating a flow of air that either pushes or pulls the smoke away from the desired areas. Airflow can be achieved by natural or mechanical means, such as vents, fans, or dampers. Airflow can also be used to create a smoke layer above the occupant level in large spaces, such as atriums or warehouses, by exhausting the hot smoke and supplying fresh air below the layer.References:Smoke Extraction System - NAFFCO Smoke Management;Post-Fire Smoke Purge Systems: When Are They Required? - NY Engineers; NFPA Fire Protection Handbook, 21st Edition, Chapter 9, Section 9.2.1.
NEW QUESTION # 63
The Chezy Formula used in hydraulic analysis requires all of the following information:
- A. Diameter of pipe, hydraulic radius and hydraulic slope
- B. Diameter of pipe, roughness of pipe, and hydraulic radius
- C. Diameter of pipe, roughness of pipe and hydraulic slope
- D. Roughness of pipe, length of pipe, and hydraulic slope
Answer: D
NEW QUESTION # 64
The minimum width of a doorway in a means of egress to accommodate a person in a wheelchair is
- A. 28 inches (711 mm).
- B. 36 inches (914 mm).
- C. 32 inches (813 mm).
- D. 40 inches (1016 mm).
Answer: C
Explanation:
Explanation
The minimum width of a doorway in a means of egress to accommodate a person in a wheelchair is 32 inches (813 mm).This is based on the requirements of the Americans with Disabilities Act (ADA) and the International Building Code (IBC), which both specify that doors in a path of egress and doors on an accessible route must have a clear opening width of at least 32 inches (813 mm)12. This width allows enough space for a person in a wheelchair to maneuver through the doorway without difficulty. A wider doorway may be preferable for some types of wheelchairs or other assistive devices, but 32 inches (813 mm) is the minimum standard for accessibility and safety.References:DECODED: Calculating the Egress Width of Door Openings - I Dig Hardware;Digital Codes.
NEW QUESTION # 65
What condition can occur when a pressure tank and a gravity tank are connected to a sprinkler system through a common riser?
- A. Pressure lock
- B. Vapor lock
- C. Air lock
- D. Gravity lock
Answer: A
Explanation:
Air Lock A condition known as air lock can occur when a pressure tank and a gravity tank are connected to a sprinkler system through a common riser.
NEW QUESTION # 66
What class of openings is requited in walls between rooms with a 1-hour fire rating?
- A. Class C
- B. Class D
- C. Class A
- D. Class B
Answer: D
NEW QUESTION # 67
Proper exit design permits everyone to leave the fire endangered area:
- A. without fear of loss of life
- B. in the shortest possible time
- C. prior to an untenable atmosphere
- D. in the shortest travel distance
Answer: C
NEW QUESTION # 68
The most common method of measuring flow in an open steam discharging from an orifice is by direct measurement of the velocity head using a:
- A. Bernoulli dial
- B. Flow meter
- C. Pitot tube
- D. Flow valve
Answer: C
Explanation:
Flow tubes are somewhat similar to venturi tubes except that they do not have the entrance cone. They have a tapered throat, but the exit is elongated and smooth. The distance between the front face and the tip is approximately one-half the pipe diameter. Pressure taps are located about one-half pipe diameter downstream and one pipe diameter upstream. (Back to Meter Types Table) Flow Nozzles, at high velocities, can handle approximately 60 percent greater liquid flow than orifice plates having the same pressure drop. Liquids with suspended solids can also be metered. However, use of the units is not recommended for highly viscous liquids or those containing large amounts of sticky solids.
Pitot tubes sense two pressures simultaneously, impact and static. The impact unit consists of a tube with one end bent at right angles toward the flow direction. The static tube's end is closed, but a small slot is located in the side of the unit. The tubes can be mounted separately in a pipe or combined in a single casing. Pitot tubes are generally installed by welding a coupling on a pipe and inserting the probe through the coupling. Use of most pitot tubes is limited to single point measurements. The units are susceptible to plugging by foreign material in the liquid. Advantages of pitot tubes are low cost, absence of moving parts, easy installation, and minimum pressure drop.
Elbow tap meters operate on the principle that when liquid travels in a circular path, centrifugal force is exerted along the outer edges. Thus, when liquid flows through a pipe elbow, the force on the elbow's interior surface is proportional to the density of the liquid times the square of its velocity. In addition, the force is inversely proportional to the elbow's radius.
NEW QUESTION # 69
What oven class utilizes a special processing atmosphere to prevent the oxidation of the metal during the heating process?
- A. Class B
- B. Class C
- C. Cass D
- D. Class A
Answer: D
Explanation:
Class A ovens and furnaces are heat utilization equipment operating at approximately atmospheric pressure wherein there is a potential explosion or fire hazard that could be occasioned by the presence of flammable volatiles or combustible materials processed or heated in the furnace. Such flammable volatiles or combustible materials can, for instance, originate from any one of the following:
(a) Paints, powders, inks, and adhesives from finishing processes, such as dipped, coated, sprayed, and impregnated Materials (b) Substrate material.
(c) Wood, paper, and plastic pallets, spacers, or packaging materials
(d) Polymerization or other molecular rearrangements Potentially flammable materials, such as quench oil, water-borne finishes, cooling oil, or cooking oils, that present a hazard are ventilated according to Class A standards.
Class B ovens and furnaces are heat utilization equipment operating at approximately atmospheric pressure wherein there are no flammable volatiles or combustible materials being heated.
Class C ovens and furnaces are those in which there is a potential hazard due to a flammable or other special atmosphere being used for treatment of material in process. This type of furnace can use any type of heating system and includes a special atmosphere supply system(s). Also included in the Class C classification are integral quench furnaces and molten salt bath furnaces.
Class D furnaces are vacuum furnaces that operate at temperatures that exceed ambient to over
5000 XF (2760 XC) and at
pressures from vacuum to several atmospheres during heating using any type of heating system. These furnaces can include the use of special processing atmospheres. During gas quenching, these furnaces may operate at pressures from below atmospheric to over a gauge pressure of 100 psi (690 kPag).
NEW QUESTION # 70
Which of the following would NOT be an appropriate purpose for employing a guard service to protect a property against fire loss?
- A. To protect the property at times when the management is not present
- B. To perform routine housekeeping and equipment maintenance operations during nonproduction hours
- C. To facilitate and control the movement of persons into, out of, and within the property
- D. To carry out procedures for the orderly conduct of some operations on the property
Answer: B
Explanation:
Explanation
The correct answer is C. To perform routine housekeeping and equipment maintenance operations during nonproduction hours would NOT be an appropriate purpose for employing a guard service to protect a property against fire loss. A guard service is typically hired to provide security and protection for a property, not to perform other tasks that are unrelated to fire prevention or control. Housekeeping and equipment maintenance operations should be done by qualified and authorized personnel who are trained and equipped to handle any potential fire hazards. A guard service may not have the necessary skills, tools, or authority to perform these operations safely and effectively.Moreover, these operations may interfere with the guard service's primary duty of monitoring and patrolling the property for any signs of fire or intrusion12345
NEW QUESTION # 71
Power for driving fire pumps is selected on the basis of reliability, adequacy, economy, and
- A. adaptability.
- B. ecology.
- C. efficiency.
- D. safety.
Answer: D
Explanation:
The correct answer is B. Safety is one of the criteria for selecting the power source for driving fire pumps, according to NFPA 20, Chapter 9.1.1.11. Reliability, adequacy, and economy are the other criteria mentioned in the same chapter. Efficiency, adaptability, and ecology are not explicitly stated as criteria in NFPA 20, although they may be considered as secondary factors in some cases.
1: Pump Installation: Everything About Electric and Diesel Driven Fire ...
NEW QUESTION # 72
Fire alarm visible appliance source intensity is measured in
- A. foot candle.
- B. lumen.
- C. lux.
- D. candela.
Answer: D
Explanation:
Fire alarm visible appliance source intensity is measured in candela, which is the unit of luminous intensity in a given direction. Candela is defined as the amount of light emitted by a single candle in a specific direction. The intensity of a strobe light depends on the candela rating, the flash rate, and the flash duration. The higher the candela rating, the brighter the light. The National Fire Protection Association (NFPA) and the Americans with Disabilities Act (ADA) have established minimum and maximum candela ratings for fire alarm visible appliances in different locations and applications. Reference: Strobe Light Requirements: Proper location of visible notification ...; Handbook of Visual Notification Appliances for Fire Alarm Applications; Audible Visible Appliance Reference Guide - Fire - studylib.net
NEW QUESTION # 73
Combustibles should be moved away from cutting and welding operations a minimum distance of ________.
- A. 40 ft (12.2 m)
- B. 45 ft (13.7 m)
- C. 30 ft (9.1 m)
- D. 35 ft (10.6 m)
Answer: D
Explanation:
1910.252(a)(2)(iii)(A)(1)
Appreciable combustible material, in building construction or contents, closer than 35 feet (10.7 m) to the point of operation.
1910.252(a)(2)(iii)(A)(2)
Appreciable combustibles are more than 35 feet (10.7 m) away but are easily ignited by sparks.
1910.252(a)(2)(iii)(A)(3)
Wall or floor openings within a 35-foot (10.7 m) radius expose combustible material in adjacent areas including concealed spaces in walls or floors.
NEW QUESTION # 74
What is the limit per NFPA 30 for gross floor area in a hazardous material storage locker?
- A. 4500 ft2 (418 m2)
- B. 6000 ft2 (557 m2)
- C. 1500 ft2 (139 m2)
- D. 3000 ft2 (379 m2)
Answer: C
Explanation:
Explanation
The answer is A. According to NFPA 30: Flammable and Combustible Liquids Code, 2021 Edition, Chapter
14, lockers used for the storage of flammable or combustible liquids shall not exceed 1500 ft2 (139 m2) gross floor area. This limit applies to both indoor and outdoor lockers.Lockers are defined as self-contained, prefabricated structures that are designed to store hazardous materials and that are equipped with fire protection features, such as fire-resistance-rated walls, doors, and roofs, automatic sprinklers, spill containment, and ventilation12
NEW QUESTION # 75
Which smoke detector type contains a small amount of radioactive material and functions by sensing a decrease in conductance of the air when smoke particles enter the chamber?
- A. Photoelectric
- B. lonization
- C. Light scattering
- D. Cloud chamber air sampling
Answer: B
Explanation:
Explanation
Smoke detector
Explore
The smoke detector type that contains a small amount of radioactive material and functions by sensing a decrease in conductance of the air when smoke particles enter the chamber is theionization smoke detector.
Ionization smoke detectors use a small amount of americium-241, a radioactive element, to ionize the air molecules inside a sensing chamber. This creates a low-level electric current between two electrodes. When smoke enters the chamber, it disrupts the ionized air and reduces the current flow. This triggers the alarm to sound.Ionization smoke detectors are more sensitive to small particles of smoke, such as those produced by flaming fires1.However, they may also be more prone to false alarms from cooking or steam, and they require proper disposal of the radioactive source2.
References:
Smoke Detector Types: Which Type of Smoke Detector Is Best? - X-Sense
How Does Your Smoke Detector Work? - ThoughtCo
NEW QUESTION # 76
Typical fire pump drivers reach maximum brake horsepower between
- A. 90-100% of rated capacity.
- B. 140-170% of rated capacity.
- C. 110-125% of rated capacity.
- D. 65-85% of rated capacity.
Answer: B
Explanation:
Explore
Typical fire pump drivers reach maximum brake horsepower (BHP) between 140% and 170% of rated capacity, depending on the type and size of the pump. This means that the driver must be able to provide enough power to operate the pump at its peak efficiency point, which is usually beyond the rated capacity. The rated capacity is the flow rate at which the pump is designed to deliver a certain pressure, as specified by NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection. The maximum BHP is the highest power output required by the pump at any point on its performance curve. The driver must be sized to match the maximum BHP of the pump, with some allowance for service factor and safety margin. Reference: Understanding the Basics of Fire Pumps | Pumps & Systems; How are Engines and Motors Sized for Fire Pumps?; NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection, 2023 Edition, Chapter 4, Section 4.7.
NEW QUESTION # 77
The two major principles used to determine egress width are the
- A. inverse and the evacuation method.
- B. density and group method.
- C. stair width and floor method.
- D. flow and the capacity method.
Answer: D
Explanation:
The two major principles used to determine egress width are the flow and the capacity method, according to the web search results I found for you. The flow method is based on the assumption that the movement of people in egress components is analogous to the flow of fluid in pipes, and that the flow rate depends on the density and velocity of the occupants. The capacity method is based on the calculation of the required egress width by multiplying the occupant load by a factor that represents the space needed for each occupant to exit safely12. Reference:
Minimum Corridor Width Requirements | Explained! - Building Code Trainer, "The required capacity of corridors shall be determined as specified in Section 1005.1, but the minimum width shall be not less than that specified in Table 1020.2. There are two thing to note in this code section. The first is the required capacity of the corridor and the second is the minimum width. This might be confusing at first but lets walk through this to better understand the code section. The required capacity of a corridor is based on the total occupant load served by the corridor. This is determined by Section 1005.1. This is the first place you must look to determine the required width of the corridor. Then when you know what the required width of the corridor must be, go to Table 1020.2 to verify the minimum width required. After you have done this, compare the two numbers and go with the most restrictive. This means that the actual width of the corridor is to be the larger of the two widths. If the required width calculates to be less than the minimum width, then go with the minimum width. However if the required width calculates out to be greater than the minimum width, then the calculated required width becomes the minimum width." DECODED: Calculating the Egress Width of Door Openings - I Dig Hardware, "To determine the egress capacity of a door, or how many people a door will accommodate, divide the clear opening width of the door by 0.2 inches per occupant or 0.15 inches per occupant (see previous page to choose which factor to use)."
NEW QUESTION # 78
In a detention or correctional facility, the following would be what type of restraint or locking system?
Free movement is restricted from a occupied space. Remote control release is provided to permit movement from all sleeping rooms, activity spaces, and other occupied area within the smoke compartment to other smoke compartments.
- A. Use Condition V V Contained
- B. Use Condition III V Zone Impeded Egress
- C. Use Condition IV V Impeded Egress
- D. Use Condition II V Zoned Egress
Answer: A
NEW QUESTION # 79
Which Occupational Safety and Health Administration (OSHA) regulation addresses dip tanks containing flammable or combustible liquids?
- A. 1910.120
- B. 1910.107
- C. 1910.110
- D. 1910.108
Answer: D
NEW QUESTION # 80
What type of standpipe system provides 21/2 in. (65 mm) hose connections at designated locations in a building for use by the fire department?
- A. Class III
- B. Class II
- C. Class I
- D. Class IV
Answer: C
Explanation:
Explanation
A Class I standpipe system provides 2 1/2 in. (65 mm) hose connections at designated locations in a building for use by the fire department. A Class I standpipe system is intended to supply water for fire fighting operations by trained personnel using hoses of 1 1/2 in. (40 mm), 1 3/4 in. (45 mm), or 2 in. (50 mm) nominal diameters. A Class I standpipe system is required to deliver a minimum flow rate of 250 gpm (946 L/min) at a minimum residual pressure of 100 psi (6.9 bar) at the most remote hose connection.References:
NFPA 14: Standard for the Installation of Standpipe and Hose Systems, 2019 Edition, Section 3.3.4.11 Fire Protection Handbook, 20th Edition, Volume 1, Chapter 8, Section 8.2.1.12
NEW QUESTION # 81
What does not require any external power to function and instead relies on specific construction methods and the installation of materials products and building elements to meet well-defined fire performance requirements?
- A. Passive fire protection
- B. Prescription code
- C. Building codes
- D. Performance-based code
Answer: A
NEW QUESTION # 82
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