ICC/NAFED Certified Portable Fire Extinguisher Technician (FE) — Questions and Answers

Question 1: What type of fire extinguisher is best suited for a wood or paper fire?

Class A (Correct answer)
Class D
Class C
Class B

Correct answer: Class A

Class A fires involve ordinary combustible materials such as wood, paper, cloth, and trash. Class A fire extinguishers typically use water or water-based agents to cool the fuel below its ignition temperature. This method effectively removes the heat element from the fire triangle, extinguishing the blaze.

Question 2: In a multi-story building, where should fire extinguishers be placed on each floor?

Near all exits and along normal paths of travel on each floor (Correct answer)
Only where AHJ specifically requires
Only on the ground floor
Only near stairwells

Correct answer: Near all exits and along normal paths of travel on each floor

Each floor must have extinguishers placed near exits and along normal travel paths so occupants on every level have access.

Question 3: What is the required hydrostatic test interval for CO2 fire extinguishers?

5 years (Correct answer)
6 years
12 years
10 years

Correct answer: 5 years

CO2 extinguishers must be hydrostatically tested every 5 years because they operate at very high pressure.

Question 4: What is the UL rating system used to communicate the firefighting capability of a portable extinguisher?

A color band indicating hazard class only
A numerical code indicating gallons of agent
A weight-based code indicating agent mass
A letter-number rating (e.g., 2A:10B:C) where the number indicates extinguishing potential (Correct answer)

Correct answer: A letter-number rating (e.g., 2A:10B:C) where the number indicates extinguishing potential

The UL rating uses a letter for fire class and a number (for A and B) representing comparative extinguishing potential on standardized test fires.

Question 5: Which of the following is a sign that a fire extinguisher needs servicing?

An unmarked hose.
A cracked or dented body (Correct answer)
A missing pin.
A dirty label.

Correct answer: A cracked or dented body

A cracked or dented body is a clear sign that a fire extinguisher needs servicing. Such physical damage can compromise the structural integrity of the cylinder, potentially leading to failure or rupture under pressure. This makes the extinguisher unsafe and unreliable, requiring immediate attention or replacement.

Question 6: Why is the siphon tube length critical in a stored-pressure extinguisher?

Tube length affects hydrostatic test frequency
A tube that is too short may prevent full discharge of the agent (Correct answer)
Longer tubes require more propellant
Tube length determines pressure rating

Correct answer: A tube that is too short may prevent full discharge of the agent

If the siphon tube is too short, it won't reach the bottom of the cylinder, leaving agent behind and reducing effectiveness.

Question 7: What is the required hydrostatic test interval for a stored-pressure water-type fire extinguisher?

10 years
12 years
6 years
5 years (Correct answer)

Correct answer: 5 years

Stored-pressure water-type extinguishers must be hydrostatically tested every 5 years per NFPA 10.

Question 8: Why is regular maintenance crucial in fire safety?

It decreases the need for fire safety training.
It reduces fire risks by ensuring equipment is ready (Correct answer)
It improves employee productivity.
It increases the fire department's response time.

Correct answer: It reduces fire risks by ensuring equipment is ready

Regular maintenance of fire safety equipment, such as fire extinguishers, alarms, and sprinkler systems, is essential to ensure they are in proper working order. This readiness means that if a fire occurs, the equipment can function effectively to contain or extinguish it, significantly reducing the potential for damage and injury. Without maintenance, equipment might fail when needed most, increasing overall fire risks.

Question 9: A fire in a propane storage area is best addressed with which type of extinguisher?

Water extinguisher
Class A water mist extinguisher
Class D dry powder extinguisher
Class B dry chemical (BC or ABC) extinguisher (Correct answer)

Correct answer: Class B dry chemical (BC or ABC) extinguisher

Propane is a flammable gas (Class B fuel), so a BC or ABC dry chemical extinguisher is the correct choice.

Question 10: When a fire extinguisher technician recommends an upgrade from a 2.5-lb CO2 to a 5-lb CO2 extinguisher, what primary benefit does this provide?

Lighter weight for easier portability
Greater operating pressure
Lower recharge cost
Longer discharge duration and greater extinguishing range for larger fire scenarios (Correct answer)

Correct answer: Longer discharge duration and greater extinguishing range for larger fire scenarios

A larger CO2 cylinder provides a longer discharge time and greater agent volume, allowing the operator to address larger fires more effectively.

Question 11: What minimum temperature limitation is a critical operational concern for CO2 extinguishers during discharge?

The discharge pressure drops below effective range above 100°F (38°C)
The discharge creates temperatures as low as -110°F (-79°C) at the horn (Correct answer)
The agent freezes in the cylinder below 32°F (0°C)
CO2 becomes liquid above 87°F (31°C)

Correct answer: The discharge creates temperatures as low as -110°F (-79°C) at the horn

CO2 expands rapidly during discharge, dropping to approximately -110°F (-79°C) at the horn, which can cause frostbite if the horn is held improperly during use.

Question 12: After a fire extinguisher has been used partially, what is the correct action per NFPA 10?

Recharge immediately regardless of how much agent was used (Correct answer)
Return to service if gauge still reads in the green
Replace the pull pin and return to service
Leave it in service until annual inspection

Correct answer: Recharge immediately regardless of how much agent was used

NFPA 10 requires that any extinguisher that has been used, even partially, be recharged or replaced immediately.

Question 13: What is considered a major hazard during a fire risk assessment?

Lack of fire extinguishers.
Insufficient emergency exits.
Flammable materials and faulty wiring (Correct answer)
Excessive use of electricity.

Correct answer: Flammable materials and faulty wiring

During a fire risk assessment, flammable materials and faulty wiring are considered major hazards. Flammable materials provide the fuel for a fire, allowing it to start and spread rapidly. Faulty wiring is a common source of ignition due to overheating or arcing. Both represent direct and significant threats that require immediate attention to prevent fire incidents.

Question 14: Purple-K dry chemical extinguishing agent contains which primary chemical compound?

Monoammonium phosphate
Potassium chloride
Potassium bicarbonate (Correct answer)
Sodium bicarbonate

Correct answer: Potassium bicarbonate

Purple-K is a potassium bicarbonate-based dry chemical agent, which is approximately twice as effective as sodium bicarbonate on Class B fires.

Question 15: Which type of fire extinguisher uses a separate cartridge of CO2 or nitrogen to expel the agent?

Pump-tank type
Cartridge-operated type (Correct answer)
Stored-pressure type
Self-expelling type

Correct answer: Cartridge-operated type

Cartridge-operated extinguishers have a separate gas cartridge that is punctured upon operation to pressurize the agent in the main cylinder.

Question 16: What does the fire extinguisher's 'pass' inspection tag indicate?

The extinguisher is ready to be used.
The extinguisher is overcharged.
The extinguisher meets safety standards (Correct answer)
The extinguisher has been tested.

Correct answer: The extinguisher meets safety standards

A 'pass' inspection tag indicates that the fire extinguisher has undergone a thorough inspection and has been found to be in proper working condition, meeting all applicable safety standards and regulations. This tag confirms its readiness for use and compliance, providing assurance that it will function as intended in an emergency.

Question 17: What is the correct pressure range for charging a standard ABC stored-pressure dry chemical extinguisher?

100–125 psi
125–175 psi (Correct answer)
200–250 psi
75–100 psi

Correct answer: 125–175 psi

Standard ABC stored-pressure dry chemical extinguishers are typically charged to 125–175 psi with dry nitrogen as specified by the manufacturer.

Question 18: What information must be recorded on a fire extinguisher after hydrostatic testing?

Test date, test pressure, and tester identity stamped or labeled on the cylinder (Correct answer)
Manufacturer part number
Only the next test due date
Inspector name only

Correct answer: Test date, test pressure, and tester identity stamped or labeled on the cylinder

After hydrostatic testing, the test date, pressure used, and the identity of the testing facility must be permanently marked on the cylinder.

Question 19: How should a fire extinguisher be positioned in relation to potential hazards?

Directly over the hazard
Inside the hazard area for fastest access
Along normal paths of travel and egress, near the hazard but not in it (Correct answer)
Opposite side of the building from the hazard

Correct answer: Along normal paths of travel and egress, near the hazard but not in it

Extinguishers should be placed along normal paths of egress so occupants can grab them while evacuating without entering the hazard area.

Question 20: When extinguishers are located in a cabinet, what visibility requirement must be met?

Location must be marked with a sign visible from 50 feet (Correct answer)
Cabinet door must be transparent
Cabinet must be red
An alarm must sound when opened

Correct answer: Location must be marked with a sign visible from 50 feet

NFPA 10 requires that the location of extinguishers in cabinets be identified with a sign visible from at least 50 feet.

Question 21: What is the minimum weight for a portable fire extinguisher in most commercial buildings?

1 lb.
10 lbs.
5 lbs.
2.5 lbs (Correct answer)

Correct answer: 2.5 lbs

In many commercial buildings, the minimum recommended weight for a portable fire extinguisher for general purpose use is 2.5 lbs (often with a 2A:10BC rating). This size provides a reasonable capacity for initial fire suppression without being overly cumbersome. Specific requirements can vary based on occupancy and hazard levels as outlined in NFPA 10.

Question 22: What is the main goal of a fire risk assessment?

To develop a fire evacuation plan.
To train personnel in fire safety.
To inspect the effectiveness of fire extinguishers.
To prevent fire hazards and reduce risks (Correct answer)

Correct answer: To prevent fire hazards and reduce risks

The main goal of a fire risk assessment is to prevent fire hazards and reduce risks. This systematic evaluation aims to identify potential fire threats, assess their likelihood and severity, and then implement appropriate control measures. By proactively addressing these risks, the assessment helps to prevent fires from occurring and minimize their impact if they do, thereby protecting lives and property.

Question 23: Which item on an extinguisher's nameplate is used to identify the specific unit for record-keeping purposes?

Agent type color code
Manufacturer's logo
Serial number (Correct answer)
Net agent weight

Correct answer: Serial number

The serial number is the unique identifier for each extinguisher and is used to link the unit to all of its service records.

Question 24: Which organization's certification is most widely recognized in the US for portable fire extinguisher service technicians?

NFPA
ICC (International Code Council)
NICET (National Institute for Certification in Engineering Technologies) (Correct answer)
OSHA

Correct answer: NICET (National Institute for Certification in Engineering Technologies)

NICET offers widely recognized certification for fire protection technicians, including portable fire extinguisher servicing.

Question 25: What should be done if a fire extinguisher is found to have a damaged handle?

Test the handle for functionality.
Clean the exterior.
Replace the extinguisher immediately (Correct answer)
Reapply the safety pin.

Correct answer: Replace the extinguisher immediately

A damaged handle on a fire extinguisher is a critical defect that can prevent its proper operation or safe handling during an emergency. Such damage compromises the user's ability to activate the extinguisher effectively and safely. Therefore, an extinguisher with a damaged handle must be immediately removed from service and replaced to ensure fire safety.

Question 26: Which fire extinguisher type should never be used on a liquid fire?

Class A
Class A (water-based) (Correct answer)
Class C
Class B

Correct answer: Class A (water-based)

Class A (water-based) fire extinguishers are designed for ordinary combustibles like wood and paper. Using water on a Class B (liquid) fire can be extremely dangerous as it can spread the flammable liquid, making the fire larger and more difficult to control. Water can also cause a violent reaction if the liquid is superheated.

Question 27: When a fire extinguisher is condemned and removed from service, what must be done according to NFPA 10?

Store it for spare parts
Transfer it to another location
Simply discard it
Render it completely inoperable before disposal and record its removal (Correct answer)

Correct answer: Render it completely inoperable before disposal and record its removal

A condemned extinguisher must be made completely inoperable (e.g., cylinder destroyed) before disposal, and its removal must be documented.

Question 28: Which dry chemical extinguishing agent is considered the most effective pound-for-pound on Class B flammable liquid fires?

Calcium chloride
Sodium bicarbonate
Potassium bicarbonate (Purple-K) (Correct answer)
Monoammonium phosphate (ABC)

Correct answer: Potassium bicarbonate (Purple-K)

Potassium bicarbonate (Purple-K) is approximately twice as effective as sodium bicarbonate on Class B fires because potassium ions are more efficient at interrupting combustion chain reactions.

Question 29: What happens to a CO2 extinguisher's pressure gauge reading in cold temperatures?

It reads accurately regardless of temperature
The gauge freezes and becomes unreadable
It reads lower than actual pressure, which may appear as undercharge (Correct answer)
It reads higher than actual pressure

Correct answer: It reads lower than actual pressure, which may appear as undercharge

CO2 pressure drops significantly in cold temperatures, causing a gauge reading that appears low even if the cylinder is fully charged.

Question 30: What should an operator do if a fire is not extinguished after one full discharge of the extinguisher?

Continue to aim the empty extinguisher at the fire
Open windows to reduce smoke before re-attempting
Immediately evacuate — do not re-enter to try a second extinguisher unless trained and conditions are safe (Correct answer)
Try to smother the fire with a cloth

Correct answer: Immediately evacuate — do not re-enter to try a second extinguisher unless trained and conditions are safe

If a full discharge fails to extinguish the fire, the operator should evacuate immediately; a growing fire quickly becomes life-threatening.

Question 31: Which extinguisher component delivers the agent from the cylinder to the fire?

Pressure indicator
Siphon (dip) tube (Correct answer)
Carrying handle
Safety pin

Correct answer: Siphon (dip) tube

The siphon tube (dip tube) extends to the bottom of the cylinder, allowing pressurized gas to push the liquid or powder agent up and out through the valve.

ICC/NAFED Certified Portable Fire Extinguisher Technician (FE)

The FE certification exam tests technicians on the inspection, maintenance, hydrostatic testing, recharging, placement, and recordkeeping of portable fire extinguishers in accordance with NFPA 10 and manufacturer specifications.

Questions

35 min

Time Limit

75%

To Pass

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These practice questions were written with AI tools. They are not real exam questions. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

nafed.org — Test delivery, fees, exam format, passing score, retake policy, score release, score validity · verified Oct 2026
iccsafe.org — Time limit · verified Oct 2026