CFPS問題集で2025年最新のNFPA CFPS試験問題
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NFPA CFPS 認定試験の出題範囲：
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質問 # 81
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. Pitot tube
- B. Flow meter
- C. Flow valve
- D. Bernoulli dial
正解：A
解説：
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.
質問 # 82
Existing Board and Care Facilities classify the residents based on all of the following evacuation capabilities EXCEPT.
- A. normal
- B. Slow
- C. impractical
- D. prompt
正解：A
解説：
Evacuation Capability. The ability of occupants, residents, and staff as a group either to evacuate a building or to relocate from the point of occupancy to a point of safety.
Impractical Evacuation Capability. The inability of a group to reliably move to a point of safety in a timely manner.
Prompt Evacuation Capability. The ability of a group to move reliably to a point of safety in a timely manner that is equivalent to the capacity of a household in the general population.
Slow Evacuation Capability. The ability of a group to move reliably to a point of safety in a timely manner, but not as rapidly as members of a household in the general population.
質問 # 83
Heat transfer oils can be used up to
- A. 700° F (371° C).
- B. 650° F(343° C).
- C. 750° F (399C).
- D. 600° F (315° C).
正解：B
解説：
Explanation
650° F(343° C).
Heat transfer oils are fluids that are used to transfer heat from one source to another in various industrial applications, such as chemical processing, oil refining, power generation, and food processing. Heat transfer oils can be classified into two types: mineral oils and synthetic oils. Mineral oils are derived from petroleum and have a lower cost and a lower flash point than synthetic oils.Synthetic oils are made from organic or silicone compounds and have a higher thermal stability and a higher flash point than mineral oils1 The maximum temperature that heat transfer oils can be used up to depends on the type and quality of the oil, as well as the design and operation of the heat transfer system. Different oils have different boiling points, viscosity, thermal conductivity, and thermal degradation rates.Generally, synthetic oils can withstand higher temperatures than mineral oils, but they are also more expensive and may require special handling and storage1 According to the web search results, the maximum temperature that heat transfer oils can be used up to ranges from 300°C to 400°C (572°F to 752°F), depending on the specific product and manufacturer.For example, the product brochure from Klüber Lubrication states that their heat transfer oils have an application range of operating temperatures up to 550°F (288°C)2.The product data sheet from Sinopec states that their heat transfer oils can be used up to 540°F (282°C)3.The product information from Paratherm states that their high temperature heat transfer fluids have service temperatures of 3°C to 357°C (37°F to 675°F)4. Therefore, based on these sources, the closest answer to the question is B. 650° F(343° C). However, it is important to note that the maximum temperature that heat transfer oils can be used up to may vary depending on the specific conditions and requirements of each application.
References:
Heat Transfer Fluids - A Comparison of Types1
High-temperature heat transfer fluids - Dow5
Heat Transfer Oils - klueber.com2
Heat Transfer Oil Suppliers | Heat Transfer Oils include low ...3
High Temperature Heat Transfer Fluids | Paratherm4
質問 # 84
The ignition test method that exposes the specimen to a known heat flux from a tungsten-quartz heater is referred to as a
- A. intermediate-scale calorimeter.
- B. cone calorimeter.
- C. lateral ignition apparatus.
- D. fire propagation apparatus.
正解：B
解説：
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
質問 # 85
The total head of a fire pump is:
- A. the energy imparted to the liquid as it passes through the orifice
- B. psi rating as the liquid passes through the pipe
- C. the static pressure of water at the intake of the pump
- D. the energy imparted to the liquid as it passes through the pump
正解：D
質問 # 86
What much conducted when new emission standards are imposed on an operational plan for a boiler system, and they exceed the operating limits of the existing system?
- A. A thorough inspection of the boiler plant
- B. A review of the as-built drawings
- C. A Federal Clean Air Act Waiver
- D. An engineering analysis
正解：A
質問 # 87
Foundations for water tanks and towers should be built of concrete with compressive strength of NOT less than how many psi?
- A. 3,000
- B. 4,000
- C. 2,000
- D. 5,000
正解：A
解説：
質問 # 88
Rate-of-rise detectors should NOT be used where temperatures might rise faster than a minimum of:
- A. 8-11 X F (4-6 X C) per minute
- B. 16-19 X F (9-11 X C) per minute
- C. 20-23 X F (11-13 X C) per minute
- D. 12-15 X F (7-8 X C) per minute
正解：A
質問 # 89
The walls dividing mall building stores from each other should extend to the extent practicable from the floor.
- A. to the underside of the suspended ceiling
- B. through the roof deck
- C. to the underside of the roof deck or floor above
- D. to a minimum height of 10 ft (3.05 m)
正解：D
質問 # 90
The most versatile oxygen consumption method for measuring heat release rate is:
- A. an OSU Apparatus
- B. a Steiner Tunnel
- C. a Cone Colorimeter
- D. a Fire propagation apparatus
正解：C
解説：
www.ffrc.fi/FlameDays_2009/4B/LindholmPaper.pdf
質問 # 91
The duration of required fire flow in public supply systems ranges from
- A. 1-4 hours.
- B. 2-10 hours.
- C. 3-8 hours.
- D. 1-6 hours.
正解：A
質問 # 92
What kind of agent is anthrax?
- A. Infectious disease
- B. Blood agent
- C. Chemical asphyxiant
- D. Neurotransmitter
正解：B
質問 # 93
Which dry agent is considered twice as effective as ordinary sodium bicarbonate-based dry chemical?
- A. Lithium chloride
- B. Potassium sulfide
- C. Potassium bicarbonate
- D. Monoammonium phosphate
正解：D
質問 # 94
Irritant effects from exposure to fire atmospheres are normally considered by combustion as being of which two types?
- A. Dangerous and Not Dangerous
- B. Toxic and Non-Toxic
- C. Major and Minor
- D. Sensory and Pulmonary
正解：D
質問 # 95
John Freeman developed a rule for fire hydrant spacing in compact mercantile and manufacturing districts of:
- A. 350 ft (107 m)
- B. 250 ft (76 m)
- C. 400 ft (122 m)
- D. 300 ft (91 m)
正解：B
解説：
質問 # 96
What type of smoke management method is referred to as smoke purging, smoke removal, smoke exhaust, or smoke extraction?
- A. Dilution
- B. Pressurization
- C. Airflow
- D. Compartmentation
正解：C
解説：
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.
質問 # 97
Which of the following noble gases is suitable for fighting a magnesium fire?
- A. Krypton
- B. Helium
- C. Neon
- D. Xenon
正解：C
質問 # 98
Which of the following is a classification of gases from NFPA 55?
- A. Colorless
- B. Low vapor
- C. Oxidizing
- D. High vapor
正解：D
質問 # 99
What is the minimum width requirement for a window used as a second means of egress from a one- or two-family dwelling?
- A. 20 inches (510 mm)
- B. 34.2 inches (869 mm)
- C. 32.4 inches (823 mm)
- D. 24 inches (610mm)
正解：B
解説：
It shall be an outside window or door operable from the inside without the use of tools, keys, or special effort and shall provide a clear opening of not less than 5.7 ft2 (0.53 m2). The width shall be not less than 20 in. (510 mm), and the height shall be not less than 24 in. (610 mm). The bottom of the opening shall be not more than 44 in. (1120 mm) above the floor. Such means of escape shall be acceptable where one of the following criteria is met:
(1) The window shall be within 20 ft (6100 mm) of the finished ground level.
(2) The window shall be directly accessible to fire department rescue apparatus as approved by the authority having jurisdiction.
(3) The window or door shall open onto an exterior balcony.
(4) Windows having a sill height below the adjacent finished ground level shall be provided with a window good meeting all of the following criteria:
(a) The window well shall have horizontal dimensions that allow the window to be fully opened.
(b) The window well shall have an accessible net clear opening of not less than 9 ft2 (0.82 m2) with a length and width of not less than 36 in. (915 mm).
(c) A window well with a vertical depth of more than 44 in. (1120 mm) shall be equipped with an approved permanently affixed ladder or with steps meeting both of the following criteria:
I) The ladder or steps shall not encroach more than 6 in. (150 mm) into the required dimensions of the window well.
iI) The ladder or steps shall not be obstructed by the window.
質問 # 100
Which of the following is produced by pyrolysis and/or incomplete combustion of organic materials and is referred to as an organic irritant?
- A. Argon
- B. Cyanide
- C. Formaldehyde
- D. Hydrogen
正解：B
質問 # 101
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