CFPS NFPA Certified Fire Protection Specialist (CFPS) Free Practice Exam Questions (2025 Updated)

20 years.

According to NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, 2020 edition, fast response sprinklers are those that have a response time index (RTI) of 50 (m·s)^(1/2) or less.These sprinklers are designed toactivate faster than standard response sprinklers in the event of a fire, and they are typically used in light hazard, ordinary hazard, and residential occupancies1

NFPA 25 requires initial testing of representative samples of fast response sprinklers after 20 years from the date of manufacture, and subsequent testing every 10 years thereafter. The testing involves removing a minimum of four sprinklers or 1% of the total number of sprinklers per individual sprinkler sample, whichever is greater, and sending them to a recognized testing laboratory. The laboratory will perform a plunge test, which measures the time it takes for the sprinkler to operate when exposed to a specified air temperature.The test results will indicate whether the sprinklers meet the acceptance criteria or need to be replaced123

References:

NFPA 25: Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems1

Sprinkler System Inspections, Testing, and Maintenance Frequencies Explained | NFPA4

Sprinkler Testing on Quick Response Sprinklers: What You Need to Know2

NFPA 25 ITM Quick Reference Guide - hillgrp.com3

When magnesium shavings or chips come in contact with water, they react to produce magnesium hydroxide and hydrogen gas. The chemical equation for the reaction is: 2 Mg (s) + 2 H2O (l)→2 Mg (OH)2 (aq) + H2 (g). This displacement reaction is characterized by effervescence, a vigorous reaction, and the formation of a white precipitate of magnesium hydroxide.

References:

Reactions of Group 2 Elements with Water - Chemistry LibreTexts1

Magnesium (Mg) and water - Lenntech2

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

Wet chemical extinguishing agents, such as potassium acetate and potassium citrate, when sprayed on a grease fire, extinguish the fire by smothering and cooling. The wet chemical agent reacts with the hot grease and forms a layer of soap-like foam on the surface of the fat, which acts as an insulation between the hot grease and the atmosphere, preventing the escape of combustible vapors and oxygen supply.The wet chemical agent also absorbs heat from the grease and lowers its temperature below the ignition point12

References:

What is the Difference Between a Wet and Dry Chemical Fire …

Wet Chemical (Class K) Fire Extinguisher - Portable - WFX

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

Dipping and coating processes using flammable or combustible liquids pose a significant fire and explosion hazard and should be isolated from other operations, materials, or occupancies by location, fire walls, or operational procedures. Location refers to the physical separation of the process from other areas by distance or barriers. Fire walls are fire-resistance-rated assemblies that prevent the spread of fire from one side to the other. Operational procedures are rules or guidelines that regulate the conduct of the process and its personnel, such as limiting the amount of flammable or combustible liquids in use, controlling ignition sources, and providing adequate ventilation.

References: NFPA 34: Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids, 2021 Edition, Section 4.21; Fire Protection Handbook, 20th Edition, Volume 1, Chapter 8, Section 8.3.12.

1:NFPA 34: Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids2:Fire Protection Handbook, 20th Edition, Volume 1, Chapter 8

OSHA requires fire fighter training in hazardous materials, respiratory protection, and communicable diseases. According to OSHA standards, fire fighters must receive annual training in hazardous materials and infectious diseases, and initial and periodic training in respiratory protection. These topics are essential for fire fighters to protect themselves and others from exposure to harmful substances and pathogens.

References:OSHA training requirements for volunteer fire company personnel;What are the Current OSHA/PESH Training Requirement for Firefighters: A Review;Training requirements for firefighters;Training Requirements in OSHA Standards

According to NFPA 750-2019, a low-pressure water mist system is one that operates at or below 175 psi (11.9 bar) at the nozzle inlet. This is the maximum pressure limit for this classification of water mist systems.

References: NFPA 750-2019: Standard on Water Mist Fire Protection Systems, Section 3.3.17.11 and Section 4.2.12.