Pass Your Fire Protection Specialist CFPS Exam Easily with Accurate PDF Questions [Feb 19, 2024]
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NEW QUESTION # 44
How many additional switches or circuit breakers are allowed for a separate service?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
Explanation
According to NFPA 70: National Electrical Code (NEC) 2020 Edition, Article 230.71(A), each service shall have only one disconnecting means unless the requirements of 230.71(B) are met, which provide four specific service configurations. In each configuration, there shall be not more than six switches or sets of circuit breakers, or a combination of not more than six switches and sets of circuit breakers, per service grouped in any one location. Therefore, the maximum number of additional switches or circuit breakers allowed for a separate service is six.References:
NFPA 70: National Electrical Code (NEC) 2020 Edition, Article 230.71(A) and (B)12 ElectricalLicenseRenewal.com, 230.71 Maximum Number of Disconnects3
NEW QUESTION # 45
Critical Radiant Flux is used to classify
- A. roofing materials.
- B. interior wall finishes.
- C. exterior materials.
- D. interior floor finishes.
Answer: D
Explanation:
Explanation
Critical radiant flux is used to classifyinterior floor finishes. Critical radiant flux is a measure of the minimum radiant heat energy required to sustain flame propagation on a floor material or covering. It is determined by exposing a specimen to a radiant heat gradient and observing the distance from the ignition point to the flame-out point.The shorter the distance, the higher the critical radiant flux and the better the fire performance of the floor material or covering1.Critical radiant flux is used to classify floor materials and coverings according to their fire hazard and resistance, and to specify the minimum requirements for different occupancies and applications2.For example, the International Building Code (IBC) requires that interior floor finishes and coverings in exit access corridors and exit enclosures have a critical radiant flux of not less than
0.45 W/cm2, while those in other spaces have a critical radiant flux of not less than 0.22 W/cm23.Critical radiant flux is also used to evaluate the fire safety of floor materials and coverings in transportation vehicles, such as aircraft, trains, and buses4.
NEW QUESTION # 46
Which type of roof covering is most effective in preventing the spread of fires from flying brands?
- A. Class D
- B. Class A
- C. Class B
- D. Class C
Answer: B
Explanation:
Explanation
Class A roof coverings are the most effective in preventing the spread of fires from flying brands. Flying brands are burning embers or pieces of combustible material that are carried by the wind and can ignite other combustible materials or structures. Class A roof coverings are tested to withstand severe fire exposure from simulated fire sources, such as large burning brands, and do not produce flying brands themselves. Class A roof coverings include materials such as asphalt shingles, metal sheets, clay or concrete tiles, slate, and some types of synthetic membranes12. References:
Class A, B, and C Roof Ratings - UL
Fire-Resistant Roofs - Fire Safe Marin
NEW QUESTION # 47
Which of the following NFPA Standards governs wiring for fire alarm systems?
- A. NFPA 75
- B. NFPA 70
- C. NFPA 73
- D. NFPA 76
Answer: B
Explanation:
Explanation
According to the web search results, NFPA 70, National Electrical Code (NEC), is the NFPA standard that governs wiring of a fire alarm system. NFPA 70 covers the general requirements for the design, installation, and inspection of electrical wiring and equipment, including fire alarm circuits and devices. NFPA 70 does not cover the performance of a fire alarm system, which is addressed by NFPA 72, National Fire Alarm and Signaling Code. NFPA 72 covers the application, installation, location, performance, inspection, testing, and maintenance of fire alarm systems and their components. NFPA 73, NFPA 75, and NFPA 76 are other NFPA standards that are related to fire alarm systems, but they do not specifically govern wiring. NFPA 73 covers the electrical inspection of existing dwellings. NFPA 75 covers the protection of information technology equipment. NFPA 76 covers the fire protection of telecommunications facilities.References:
NFPA 72 FAQs1
National Fire Alarm and Signaling Code - NFPA2
TECHNICAL SERVICES DEPARTMENT BULLETIN - NEMA3
NEW QUESTION # 48
For combustion to take place, a combustible material, an oxidizing agent, and an ignition source are required.
The exception is
- A. spontaneous combustion.
- B. conduction transfer.
- C. radiation diffusion.
- D. dielectric heating.
Answer: A
Explanation:
Explanation
Spontaneous combustion is the exception to the requirement of a combustible material, an oxidizing agent, and an ignition source for combustion to take place. Spontaneous combustion is a phenomenon in which a material can ignite without any external heat or flame, due to a chemical reaction within the material that generates enough heat to reach the ignition temperature. Spontaneous combustion can occur in certain materials that are prone to self-heating, such as oily rags, hay, coal, and compost. Spontaneous combustion is a type of smoldering combustion, which is a slow, low-temperature, flameless form of combustion.References:
Fire Protection Handbook, 20th Edition, Volume 1, Chapter 2, Section 2.2.1.11 NFPA 921: Guide for Fire and Explosion Investigations, 2021 Edition, Section 4.3.12
NEW QUESTION # 49
At what temperature do cellulose nitrate products begin to decompose?
- A. 350° F (177° C)
- B. 581° F (305° C)
- C. 425° F (218° C)
- D. 300° F (150° C)
Answer: D
Explanation:
Explanation
Cellulose nitrate products begin to decompose at about 300 °F (150 °C). This is the temperature at which the nitrate ester bonds start to break down and release nitric acid, which further catalyzes the decomposition. The decomposition temperature depends on the nitrogen content, the stabilizers, and the external heating rate of the cellulose nitrate. Higher nitrogen content, lower stabilizer concentration, and faster heating rate lower the decomposition temperature and increase the risk of thermal runaway.
References:Nitrocellulose - Wikipedia;Comparative analysis of stable decomposition and combustion kinetics of nitrated cellulose;Degradation of aged nitrocellulose investigated by thermal analysis methods;Nitrocellulose;Effect of stabilizers and nitrogen content on thermal properties of nitrocellulose
NEW QUESTION # 50
Computers and other information technology equipment are particularly susceptible to
- A. light, hoselines, and airborn dust.
- B. foam, metal powders, and dry chemicals.
- C. heat, steam, and combustion products.
- D. special extinguishing agents.
Answer: C
Explanation:
Explanation
Computers and other information technology equipment are particularly susceptible to heat, steam, and combustion products, which can damage their sensitive components, cause data loss or corruption, and impair their functionality.Therefore, fire protection for IT equipment should consider the potential sources of heat, steam, and combustion products, such as electrical faults, flammable liquids, dust accumulation, water-based sprinklers, or smoke from adjacent areas, and implement appropriate measures to prevent, detect, and suppress fires, as well as to minimize the exposure of IT equipment to these hazards1234.References:Standard for the Fire Protection of Information Technology Equipment;Fire Protection of Computer Rooms-Legal Obligations and Best Practices - ISACA;Exploring Requirements for Information Technology Equipment;Demystifying IT room protection requirements - Consulting.
NEW QUESTION # 51
Which foam extinguishing agent can be proportioned into final concentrations of 1%, 3%, and 6%?
- A. Film-Forming Fluoroprotein Agents (FFFP)
- B. Aqueous Film-Forming Agents (AFFF)
- C. Low-Temperature Foaming Agents
- D. Protein Foaming Agents (P)
Answer: B
Explanation:
Explanation
Aqueous film-forming agents (AFFF) are synthetic foam concentrates that can be proportioned into final concentrations of 1%, 3%, and 6%, depending on the type of fuel and application method12. AFFF forms a thin aqueous film on the surface of the flammable liquid, which prevents vapor release and provides rapid fire knockdown and extinguishment3. AFFF is suitable for Class B fires involving hydrocarbon fuels such as gasoline, diesel, kerosene, etc. References:
Fire Fighting Foams - Chemguard
Extinguishing foam: types, operation and application areas
[NFPA 11: Standard for Low-, Medium-, and High-Expansion Foam]
NEW QUESTION # 52
The maximum distance between hangers for an automatic fire sprinkler system for a threaded lightwall steel pipe of 2 in. diameter is
- A. 12 ft.
- B. 10 ft.
- C. 15 ft.
- D. 8 ft.
Answer: B
Explanation:
Explanation
According to NFPA 13, Table 17.4.2.1 (a), the maximum distance between hangers for an automatic fire sprinkler system for a threaded lightwall steel pipe of 2 in. diameter is 10 ft. This is done to ensure that there are not long stretches of unsecured piping that could sag, leak, or break. The distance between hangers may vary depending on the type of pipe, the type of hanger, and the seismic design category of the building.References:NFPA 13, Table 17.4.2.1 (a);Hangers and Support of Sprinkler System Piping | NFPA | NFPA.
NEW QUESTION # 53
The two major principles used to determine egress width are the
- A. flow and the capacity method.
- B. density and group method.
- C. stair width and floor method.
- D. inverse and the evacuation method.
Answer: A
NEW QUESTION # 54
The ignition test method that exposes the specimen to a known heat flux from a tungsten-quartz heater is referred to as a
- A. fire propagation apparatus.
- B. cone calorimeter.
- C. lateral ignition apparatus.
- D. intermediate-scale calorimeter.
Answer: B
Explanation:
Explanation
The cone calorimeter is an ignition test method that exposes the specimen to a known heat flux from a tungsten-quartz heater. The cone calorimeter measures the heat release rate, mass loss rate, smoke production, and other parameters of the specimen during the test. The cone calorimeter is widely used to evaluate the flammability and fire behavior of materials and products.References:
NFPA 557: Standard for Determination of Fire Loads for Use in Structural Fire Protection Design, 2017 Edition, Section 5.3.2.11 NFPA 556: Guide on Methods for Evaluating Fire Hazard to Occupants of Passenger Road Vehicles,
2019 Edition, Section 4.3.22
Fire Protection Handbook, 20th Edition, Volume 1, Chapter 3, Section 3.2.2.23
NEW QUESTION # 55
What is the minimum pipe diameter size for direct discharge of steam inside a water tank?
- A. 1 in. (25 mm)
- B. 2 in. (50 mm)
- C. 1/2 in. (13 mm)
- D. 1 1/2 in. (38 mm)
Answer: B
Explanation:
Explanation
The minimum pipe diameter size for direct discharge of steam inside a water tank is 2 in. (50 mm), according to NFPA 13, Standard for the Installation of Sprinkler Systems. This is to prevent water hammer, noise, and vibration caused by the rapid condensation of steam when it contacts the water. The pipe should also be equipped with a check valve to prevent backflow of water into the steam source.References: NFPA 13, Standard for the Installation of Sprinkler Systems, 2023 Edition, Chapter 8, Section 8.16.4.5.3; NFPA Fire Protection Handbook, 21st Edition, Chapter 14, Section 14.3.4.2.
NEW QUESTION # 56
The greatest number of civilian home fire deaths can be attributed to what area of fire origin in the home?
- A. Kitchen or cooking area
- B. Heating equipment room
- C. Garage or vehicle storage area
- D. Common room, living room
Answer: D
Explanation:
Explanation
The correct answer is D. The greatest number of civilian home fire deaths can be attributed to the common room, living room, or family room area of origin in the home. According to a report by the NFPA, based on data from the National Fire Incident Reporting System (NFIRS) and NFPA's fire experience survey, 31 percent of the civilian home fire deaths in 2017-2021 occurred in fires that started in the common room, living room, or family room. This was followed by 29 percent of the deaths in fires that started in the bedroom or sleeping area, and 12 percent of the deaths in fires that started in the kitchen or cooking area. The common room, living room, or family room area of origin is also the leading area of origin for home fires and civilian home fire injuries, accounting for 24 percent and 21 percent of those incidents, respectively. Some of the common causes of fires in the common room, living room, or family room include smoking materials, heating equipment, electrical equipment, candles, and fireplaces. To prevent fires and fire deaths in the common room, living room, or family room, the NFPA recommends the following safety tips:
Keep smoking materials away from anything that can burn. Use deep, sturdy ashtrays and wet cigarette butts before discarding them.
Keep space heaters at least 3 feet away from anything that can burn. Turn them off when you leave the room or go to sleep.
Have a qualified electrician inspect and repair any faulty wiring or outlets. Avoid overloading circuits or extension cords. Unplug appliances when not in use.
Keep candles in sturdy holders and away from children, pets, and anything that can burn. Blow them out when you leave the room or go to sleep.
Have your chimney and fireplace cleaned and inspected annually by a professional. Use a metal or glass screen to keep sparks from flying out. Dispose ofashes in a metal container with a lid, and keep it outside at least 10 feet away from your home.
Install smoke alarms on every level of your home, inside each bedroom, and outside each sleeping area.
Test them monthly and replace the batteries at least once a year. Consider installing a home fire sprinkler system for added protection.
NEW QUESTION # 57
The duration of required fire flow in public supply systems ranges from
- A. 1-6 hours.
- B. 1-4 hours.
- C. 3-8 hours.
- D. 2-10 hours.
Answer: B
NEW QUESTION # 58
To be considered a family day-care home, what is the maximum allowable number of clients?
- A. Six
- B. Four
- C. Two
- D. Twelve
Answer: A
Explanation:
Explanation
The maximum allowable number of clients for a family day-care home varies by state and territory, but generally ranges from four to six children unrelated to the operator. A family day-care home is a facility in which a small group of children receive child care services in the provider's own home, such as a house, apartment, or condo unit1. To ensure a safe care environment, states and territories use child care licensing regulations to limit the number of children, as well as the number of infants and toddlers, that can receive care in a family day-care home1. Some states and territories may also offer certification or registration to help ensure some basic health and safety standards in certain home-based child care programs1. To learn more about how your state or territory regulates family day-care homes, you can visit the child care consumer education website and child care resource and referral agency for your state or territory1. References:
Family Child Care Homes | Childcare.gov
NEW QUESTION # 59
Panic hardware devices are designed to facilitate the release of the latching device on a door with a pressure note xceeding
- A. 20 pounds (9.1 kg.) is applied in the direction of exit travel.
- B. 10 pounds (4.5 kg.) is applied in the direction of exit travel.
- C. 5 pounds (2.3 kg.) is applied in the direction of exit travel.
- D. 15 pounds (6.8 kg.) is applied in the direction of exit travel.
Answer: D
Explanation:
Explanation
Panic hardware devices are designed to facilitate the release of the latching device on a door with a pressure not exceeding 15 pounds (6.8 kg.) is applied in the direction of exit travel. This is the maximum force allowed by the codes and standards that regulate the use and installation of panic hardware, such as NFPA 101, NFPA
80, and ANSI/BHMA A156.3. The purpose of this requirement is to ensure that the doors can be easily opened by anyone in an emergency situation, without prior knowledge or special effort.References:Codes to Know for Panic Hardware - Facilitiesnet;Panic and emergency escape hardware | ASSA ABLOY | ASSA ABLOY; NFPA 101, Life Safety Code, 2023 Edition, Chapter 7, Section 7.2.1.7.2; NFPA 80, Standard for Fire Doors and Other Opening Protectives, 2023 Edition, Chapter 6, Section 6.1.3.5.1; ANSI/BHMA A156.3, Standard for Exit Devices, 2014 Edition, Section 4.1.1.
NEW QUESTION # 60
What are the human health effects of exposure for two minutes at a concentration of less than 50 ppm of hydrogen fluoride?
- A. Mild eye and upper respiratory tract irritation.
- B. Moderate eye and upper respiratory tract irritation.
- C. Moderate irritation of all body surfaces.
- D. Slight eye and nasal irritation.
Answer: A
Explanation:
Explanation
According to the CDC, exposure to hydrogen fluoride at concentrations of less than 50 ppm for two minutes may cause mild eye and upper respiratory tract irritation. The severity of the effects depends on the concentration, duration, and route of exposure, as well as the individual's susceptibility. Higher concentrations or longer exposures can cause more serious health effects, such as pulmonary edema, skin burns, or systemic toxicity.References:CDC | Facts About Hydrogen Fluoride (Hydrofluoric Acid); [Hydrogen Fluoride (HF) | Medical Management Guidelines | Toxic Substance Portal | ATSDR]2; [Hydrogen Fluoride and Hydrofluoric Acid (HF) - GOV.UK]3.
NEW QUESTION # 61
What temperature measurement device consists of a pair of wires of different metals or alloys welded together at a point to form a junction to compare the voltage magnitude compared with a compensating junction at 0°C and the voltage difference calibrated to give the temperature in degrees?
- A. Bimetallic Thermometer
- B. Thermocouple
- C. Pyrometer
- D. Liquid Expansion Thermometer
Answer: B
Explanation:
Explanation
The correct answer is C. A thermocouple is a temperature measurement device that consists of a pair of wires of different metals or alloys welded together at a point to form a junction. The junction is exposed to the temperature to be measured, while the other end of the wires is connected to a reference junction at 0°C. The thermocouple produces a voltage difference between the two junctions that depends on the temperature difference.This voltage difference can be calibrated to give the temperature in degrees using a thermocouple table or a formula123
NEW QUESTION # 62
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