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

Question 1: In NFPA 10, 'light hazard' occupancy classification would typically require which minimum extinguisher spacing?

100-foot travel distance
50-foot travel distance
75-foot travel distance (Correct answer)
30-foot travel distance

Correct answer: 75-foot travel distance

NFPA 10 allows a maximum 75-foot travel distance to a Class A extinguisher in light hazard occupancies.

Question 2: 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 must be red
Cabinet door must be transparent
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 3: 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)
Inspector name only
Only the next test due date
Manufacturer part number

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 4: What is the primary purpose of hazard identification in fire safety?

To assess the damage after a fire.
To provide fire safety training.
To develop fire evacuation plans.
To identify potential fire hazards before they cause harm (Correct answer)

Correct answer: To identify potential fire hazards before they cause harm

The primary purpose of hazard identification in fire safety is to proactively identify potential fire hazards before they cause harm. This involves recognizing sources of ignition, fuel, and oxygen, as well as conditions that could lead to a fire. By identifying these risks early, preventative measures can be implemented to mitigate or eliminate them, thereby preventing fires.

Question 5: According to NFPA 10, which factor primarily determines the required extinguisher rating for a given hazard area?

The distance to the nearest fire hydrant
The number of employees present
The building's construction type
The occupancy hazard classification (light, ordinary, extra) (Correct answer)

Correct answer: The occupancy hazard classification (light, ordinary, extra)

NFPA 10 bases required extinguisher ratings on the occupancy hazard classification, which reflects the type and quantity of combustibles present.

Question 6: NFPA 10 defines 'maintenance' of a fire extinguisher as:

A quick visual check of the extinguisher's condition
The recharging of the extinguishing agent
A thorough examination and repair of the extinguisher (Correct answer)
The hydrostatic pressure testing of the cylinder

Correct answer: A thorough examination and repair of the extinguisher

Maintenance per NFPA 10 is a thorough examination to ensure the extinguisher is fully charged, operable, and in good condition.

Question 7: What type of tag or label is used to indicate that an extinguisher has been inspected and found to be in serviceable condition?

Yellow out-of-service tag
Green or current-year inspection tag (Correct answer)
Red condemnation tag
Blue maintenance tag

Correct answer: Green or current-year inspection tag

A current inspection tag (often color-coded by year) confirms the extinguisher was inspected and found in serviceable condition.

Question 8: What is a key limitation of using CO2 extinguishers outdoors?

CO2 pressure drops below operating level outdoors
Wind disperses the CO2 cloud, significantly reducing extinguishing effectiveness (Correct answer)
CO2 damages vegetation
CO2 is illegal for outdoor use

Correct answer: Wind disperses the CO2 cloud, significantly reducing extinguishing effectiveness

Wind rapidly disperses the CO2 cloud, preventing it from building up the concentration needed to extinguish the fire.

Question 9: Which of the following describes the operating mechanism of a pump-tank water extinguisher?

A chemical reaction generates gas pressure on demand
A hand-operated pump pressurizes and discharges water on each stroke (Correct answer)
A stored charge of CO2 pressurizes the tank when activated
Water is expelled by a compressed nitrogen cartridge

Correct answer: A hand-operated pump pressurizes and discharges water on each stroke

Pump-tank extinguishers rely on a manually operated pump that the user strokes repeatedly to pressurize and discharge water.

Question 10: An extinguisher tag shows the last annual maintenance was performed 13 months ago. According to NFPA 10, what must be done?

Perform annual maintenance immediately before returning to service (Correct answer)
Discard the unit and replace with a new one
Document the overdue status and continue using the unit
Schedule maintenance within the next 30 days

Correct answer: Perform annual maintenance immediately before returning to service

Extinguishers that have exceeded the annual maintenance interval must be serviced before being returned to service, not after a grace period.

Question 11: A Class D extinguisher agent must be matched to the specific metal fuel because:

Class D agents are universally effective on all metals
All metal fires burn at the same temperature
Different combustible metals require different compatible agents to avoid violent reactions (Correct answer)
Metal fires are always extinguished with water

Correct answer: Different combustible metals require different compatible agents to avoid violent reactions

Using an incompatible Class D agent on a specific metal can cause violent reactions, so agent selection must match the metal involved.

Question 12: What is the maximum floor area per extinguisher for a light-hazard Class A occupancy under NFPA 10?

11,250 sq ft (Correct answer)
6,000 sq ft
3,000 sq ft
10,000 sq ft

Correct answer: 11,250 sq ft

For light-hazard occupancies, NFPA 10 allows a maximum coverage area of 11,250 square feet per extinguisher for Class A hazards.

Question 13: What should an operator do if a fire is not extinguished after one full discharge of the extinguisher?

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)
Continue to aim the empty extinguisher at the fire
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 14: What does the term 'agent suitability' mean when selecting a dry chemical extinguisher for a risk?

The agent must be stored at the same temperature as the protected area
The agent must be the lowest cost option available for the hazard
The agent must meet the minimum UL rating regardless of residue or corrosion concerns
The agent's chemical properties must be compatible with the fire class and surrounding materials without causing additional hazards (Correct answer)

Correct answer: The agent's chemical properties must be compatible with the fire class and surrounding materials without causing additional hazards

Agent suitability requires that the chosen extinguishing agent effectively suppresses the specific fire class present without creating incompatible reactions or collateral damage to the environment or materials.

Question 15: When assessing travel distance to a fire extinguisher for a Class B hazard, what is the maximum allowable travel distance per NFPA 10?

30 feet
50 feet (Correct answer)
75 feet
100 feet

Correct answer: 50 feet

NFPA 10 requires a maximum travel distance of 50 feet to extinguishers protecting Class B hazards.

Question 16: Which NFPA 10 requirement applies when a portable fire extinguisher is located where it may be subject to physical damage?

It must be replaced with a larger unit
It must be inspected weekly instead of monthly
It must be upgraded to a wheeled extinguisher
It must be protected by a suitable bracket, cabinet, or enclosure (Correct answer)

Correct answer: It must be protected by a suitable bracket, cabinet, or enclosure

NFPA 10 requires that extinguishers subject to physical damage be protected by a bracket, cabinet, or other suitable enclosure.

Question 17: Which standard provides requirements for the design, performance, and testing of portable fire extinguishers for UL listing?

UL 299
UL 711 (Correct answer)
UL 1093
UL 300

Correct answer: UL 711

UL 711 is the standard that covers the rating and fire testing of portable fire extinguishers used for product listing.

Question 18: According to NFPA 10, what is the maximum travel distance to a fire extinguisher for Class A hazards in a light-hazard occupancy?

125 feet
75 feet (Correct answer)
100 feet
50 feet

Correct answer: 75 feet

NFPA 10 specifies a maximum travel distance of 75 feet to a fire extinguisher for Class A hazards in light-hazard occupancies.

Question 19: According to NFPA 10, what is the minimum pressure shown on a gauge for a stored-pressure extinguisher to be considered acceptable during a visual inspection?

No minimum; any visible needle position is acceptable
Any reading within the green zone on the gauge (Correct answer)
At least 100 psi regardless of gauge markings
Exactly at the manufacturer's rated fill pressure

Correct answer: Any reading within the green zone on the gauge

NFPA 10 requires the pressure gauge needle to be in the manufacturer's specified green (operable) zone for the unit to remain in service.

Question 20: When is it appropriate for a trained occupant to attempt to fight a fire with a portable extinguisher?

Only professional firefighters should use extinguishers
Always — extinguishers are provided for this purpose
Only when the fire is small, confined, the alarm is activated, an exit is behind them, and they are trained (Correct answer)
Only when the sprinkler system has already activated

Correct answer: Only when the fire is small, confined, the alarm is activated, an exit is behind them, and they are trained

Occupant use is appropriate only for small, incipient-stage fires when conditions are safe: alarm active, exit available, and the person is trained.

Question 21: What action should a technician take if a fire extinguisher mounting bracket is damaged or missing?

Submit a report and wait for the next annual inspection
Tag the extinguisher and leave it on the floor temporarily
Hang the extinguisher from its ring pin
Replace the bracket immediately before returning the extinguisher to service (Correct answer)

Correct answer: Replace the bracket immediately before returning the extinguisher to service

A damaged or missing bracket must be replaced immediately to ensure the extinguisher is properly secured and accessible.

Question 22: Which extinguisher component delivers the agent from the cylinder to the fire?

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

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.

Question 23: What must be recorded when a fire extinguisher is recharged at a 6-year internal maintenance?

Only the recharge date
Manufacturer serial number only
Only the new charge weight
Internal examination findings, parts replaced, and the technician's identity (Correct answer)

Correct answer: Internal examination findings, parts replaced, and the technician's identity

The 6-year maintenance record must document findings from the internal examination, any parts replaced, and who performed the work.

Question 24: Which factor most determines the correct minimum UL rating for an extinguisher in a given occupancy?

The hazard level (light, ordinary, extra) and the nature of the combustibles present (Correct answer)
The height of the ceiling
The number of occupants in the building
Color of the extinguisher shell

Correct answer: The hazard level (light, ordinary, extra) and the nature of the combustibles present

The occupancy hazard level and type of combustibles present determine the minimum UL rating required per NFPA 10 rating tables.

Question 25: A hazard assessment of a parking garage identifies vehicle fuel leaks as the primary risk. Which hazard class applies and what agent is recommended?

Class A hazard; water extinguisher
Class B hazard; dry chemical or CO2 extinguisher (Correct answer)
Class D hazard; dry powder extinguisher
Class C hazard; clean agent extinguisher

Correct answer: Class B hazard; dry chemical or CO2 extinguisher

Gasoline and vehicle fluids are Class B flammable liquid hazards, best addressed with dry chemical or CO2 extinguishers.

Question 26: What UL classification would you expect on an extinguisher rated for both ordinary combustibles and flammable liquids but NOT electrical fires?

A:B (Correct answer)
A:C
B:C
A:B:C

Correct answer: A:B

An A:B rating covers ordinary combustibles (Class A) and flammable liquids (Class B) but excludes energized electrical equipment (Class C).

Question 27: Per NFPA 10, what is the maximum mounting height for the handle of a portable fire extinguisher weighing more than 40 lbs?

4 feet (48 inches)
3.5 feet (42 inches) (Correct answer)
5 feet (60 inches)
3 feet (36 inches)

Correct answer: 3.5 feet (42 inches)

Extinguishers with a gross weight exceeding 40 lbs must have their handle mounted no higher than 3.5 feet (42 inches) from the floor.

Question 28: What is the main goal of fire safety regulations?

To protect human life and property (Correct answer)
To increase building insurance premiums.
To regulate fire extinguisher manufacturing.
To reduce the cost of firefighting.

Correct answer: To protect human life and property

The main goal of fire safety regulations is to protect human life and property from the devastating effects of fire. These regulations establish standards for fire prevention, early detection, safe evacuation, and effective suppression. By implementing these measures, the aim is to minimize the risk and impact of fires on individuals and assets.

Question 29: Why must dry nitrogen (not CO2) be used to pressurize dry chemical stored-pressure extinguishers?

Nitrogen is heavier and provides more pressure
Nitrogen is cheaper than CO2
CO2 is only available in liquid form
CO2 can react with the dry chemical agent and cause caking or loss of pressure (Correct answer)

Correct answer: CO2 can react with the dry chemical agent and cause caking or loss of pressure

CO2 can react with moisture and dry chemical agents, potentially causing caking or pressure loss, so dry nitrogen is specified.

Question 30: After a fire extinguisher has been used partially, what is the correct action per NFPA 10?

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

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 31: Per NFPA 10, what is the frequency required for the inspection of portable fire extinguishers?

At least monthly (Correct answer)
Quarterly
Weekly
Every six months

Correct answer: At least monthly

NFPA 10 requires portable fire extinguishers to be inspected at least monthly, though more frequent inspections are permitted.

Question 32: A facility stores acetone, methanol, and isopropyl alcohol in the same storage room. How should this hazard be classified?

Class B flammable liquid hazard (Correct answer)
Class C energized electrical hazard
Class A ordinary combustible hazard
Class D combustible metal hazard

Correct answer: Class B flammable liquid hazard

Acetone, methanol, and isopropyl alcohol are all flammable liquids classified as Class B fire hazards.

Question 33: What action should be taken first upon discovering a small fire before using a fire extinguisher?

Move combustible materials away from the fire
Call the manufacturer's service hotline
Activate the building fire alarm and ensure occupants are evacuating (Correct answer)
Immediately discharge the extinguisher

Correct answer: Activate the building fire alarm and ensure occupants are evacuating

Activating the alarm and initiating evacuation are the top priorities — life safety comes before fire suppression attempts.

Question 34: Which fire extinguisher type is most appropriate for a laboratory that stores both flammable solvents and sensitive analytical instruments?

Carbon dioxide (CO2)
Clean agent (halogenated hydrocarbon) (Correct answer)
Dry chemical (ABC)
Water mist

Correct answer: Clean agent (halogenated hydrocarbon)

Clean agents suppress Class B fires without leaving residue or damaging sensitive instruments, making them ideal for laboratory environments.

Question 35: A cooking area in a restaurant uses deep fryers with large volumes of vegetable oil. Which hazard class specifically addresses this risk?

Class B
Class K (Correct answer)
Class F
Class A

Correct answer: Class K

Class K refers specifically to cooking oil and fat fires in commercial cooking appliances, recognized under NFPA 10.

Question 36: Which extinguishing agent is specifically recommended for Class K fires involving cooking oils and fats in commercial kitchens?

Wet chemical potassium acetate solution (Correct answer)
Carbon dioxide (CO2)
ABC dry chemical powder
AFFF aqueous film-forming foam

Correct answer: Wet chemical potassium acetate solution

Wet chemical agents (potassium acetate, potassium carbonate, or potassium citrate) are designed for Class K fires because they react with hot cooking oils to form a soapy foam layer via saponification.

Question 37: What should be considered when identifying fire hazards in a workplace?

Presence of fire extinguishers.
Combustible materials, electrical equipment, and space usage (Correct answer)
Emergency evacuation drills.
Only electrical hazards.

Correct answer: Combustible materials, electrical equipment, and space usage

When identifying fire hazards in a workplace, it is essential to consider combustible materials, electrical equipment, and space usage. Combustible materials act as fuel, electrical equipment can be an ignition source if faulty, and space usage (e.g., storage, clutter) affects fire spread and access for emergency services. A comprehensive assessment of these factors helps determine the overall fire risk.

Question 38: A fire extinguisher rated for Class D use would most likely contain which agent?

Potassium acetate solution
Sodium bicarbonate
Monoammonium phosphate
Dry sand or sodium chloride-based powder (Correct answer)

Correct answer: Dry sand or sodium chloride-based powder

Class D agents such as dry sand, sodium chloride, and graphite-based powders smother combustible metal fires without reacting violently.

Question 39: When an extinguisher is installed outdoors, what additional protection is typically required?

A weatherproof cabinet or protective cover (Correct answer)
Replacement with a larger unit
Doubled inspection frequency only
None — all extinguishers are outdoor-rated

Correct answer: A weatherproof cabinet or protective cover

Outdoor extinguishers must be protected from weather, UV exposure, and physical damage using a weatherproof cabinet or cover.

Question 40: Which document must a fire extinguisher service company maintain to demonstrate technician qualifications?

Insurance certificates only
State business license only
Training records, certifications, and manufacturer training documentation for each technician (Correct answer)
Only customer invoices

Correct answer: Training records, certifications, and manufacturer training documentation for each technician

Service companies must maintain records of each technician's training, certifications, and manufacturer-specific training to demonstrate competency.

Question 41: Carbon dioxide (CO2) extinguishes fires primarily by which two mechanisms?

Saponification and smothering
Emulsification and dilution
Chemical chain interruption and fuel removal
Oxygen displacement and cooling (Correct answer)

Correct answer: Oxygen displacement and cooling

CO2 extinguishes fire by displacing oxygen (smothering) and by absorbing heat energy, providing a cooling effect on the burning material.

Question 42: When conducting a hazard assessment in a commercial laundry facility, which factor would most likely elevate the risk from ordinary to extra hazard?

Presence of employee lockers in the break room
Standard 120V electrical outlets throughout the facility
Use of non-flammable cleaning detergents
Large quantities of lint accumulation near heat sources (Correct answer)

Correct answer: Large quantities of lint accumulation near heat sources

Lint is highly combustible and accumulates rapidly near heat in laundry facilities, significantly increasing fire load and qualifying as extra hazard.

Question 43: An extinguisher with a red slash through a fuel fire symbol on its label is communicating:

The unit is out of service
The extinguisher requires special training to operate
That particular fire class is not suitable for this extinguisher (Correct answer)
The agent is expired

Correct answer: That particular fire class is not suitable for this extinguisher

A red slash through a fire class pictogram warns that the extinguisher should NOT be used on that type of fire.

Question 44: The 'B' numerical rating on a Class B extinguisher (e.g., 10-B) represents:

The approximate square footage of flammable liquid fire it can extinguish (Correct answer)
The operating pressure in PSI
The discharge time in seconds
The agent weight in pounds

Correct answer: The approximate square footage of flammable liquid fire it can extinguish

The numerical B rating approximates the square footage of a flammable liquid fire in a one-foot-deep pan that the unit can extinguish.

Question 45: Which record must be created when a new extinguisher is placed into service for the first time?

An initial placement record including location, type, size, serial number, and date of installation (Correct answer)
No record is needed until the first annual inspection
Only a purchase receipt
A hydrostatic test record

Correct answer: An initial placement record including location, type, size, serial number, and date of installation

An initial placement record establishes baseline documentation including the extinguisher's location, type, size, serial number, and installation date.

Question 46: What is the maximum travel distance to a wheeled (Class B) extinguisher for extra-hazard occupancies?

30 feet
50 feet (Correct answer)
100 feet
75 feet

Correct answer: 50 feet

NFPA 10 requires a maximum travel distance of 50 feet to extinguishers for Class B extra-hazard occupancies.

Question 47: What is typically used to permanently mark a condemned fire extinguisher cylinder to prevent re-use?

Removal of the pressure gauge
Physical destruction of the cylinder neck threads or cylinder body (Correct answer)
A sticker that says 'condemned'
A red tag only

Correct answer: Physical destruction of the cylinder neck threads or cylinder body

To prevent a condemned cylinder from being placed back into service, it must be physically destroyed — typically by cutting the cylinder or destroying the neck threads.

Question 48: Purple-K dry chemical extinguishing agent contains which primary chemical compound?

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

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 49: 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?

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

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

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

Correct answer: 5 years

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

Question 51: Which organization's certification is most widely recognized in the US for portable fire extinguisher service technicians?

ICC (International Code Council)
NFPA
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 52: What is the required hydrostatic test interval for a stored-pressure water-type fire extinguisher?

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

Correct answer: 5 years

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

Question 53: What is the primary purpose of the pull pin on a fire extinguisher?

To indicate service history
To control discharge rate
To prevent accidental discharge by blocking the handle (Correct answer)
To seal the discharge nozzle

Correct answer: To prevent accidental discharge by blocking the handle

The pull pin (safety pin) blocks the operating lever to prevent accidental discharge during handling and storage.

Question 54: What is the maximum travel distance to a fire extinguisher for Class B flammable liquid hazards?

50 feet (Correct answer)
30 feet
75 feet
100 feet

Correct answer: 50 feet

NFPA 10 requires a maximum travel distance of 50 feet to a fire extinguisher for Class B hazards.

Question 55: Which clean agent is most widely used as a replacement for Halon 1301 in fixed suppression systems?

AFFF foam
FM-200 (HFC-227ea) (Correct answer)
CO2
Nitrogen (IG-100)

Correct answer: FM-200 (HFC-227ea)

FM-200 (HFC-227ea) is the most widely used halon alternative for total-flooding applications because it has zero ozone depletion potential and extinguishes fires at low concentrations.

Question 56: What does a fire extinguisher's pressure gauge indicate?

The time needed to discharge the extinguisher
The pressure level of the extinguisher (Correct answer)
The amount of fire retardant left
The weight of the fire extinguisher

Correct answer: The pressure level of the extinguisher

The pressure gauge on a fire extinguisher indicates the internal pressure of the propellant gas, which is crucial for expelling the extinguishing agent effectively. A gauge needle pointing to the green zone signifies that the extinguisher is properly charged and ready for immediate use. Regular checks of this gauge are vital for ensuring operational readiness.

Question 57: Which type of portable fire extinguisher requires internal examination at every 6-year interval?

Wet chemical extinguishers
Stored-pressure dry chemical extinguishers (Correct answer)
CO2 extinguishers
Halotron extinguishers

Correct answer: Stored-pressure dry chemical extinguishers

NFPA 10 requires a 6-year internal inspection of stored-pressure dry chemical extinguishers, coinciding with the 6-year maintenance service.

Question 58: During hydrostatic testing, what condition in the test water indicates a cylinder must be condemned?

Change in water temperature
Slight bubbling during pressurization
Leakage, deformation, or failure to hold test pressure (Correct answer)
Water turning slightly cloudy

Correct answer: Leakage, deformation, or failure to hold test pressure

Any leakage, permanent deformation, or inability to hold the test pressure means the cylinder must be condemned and removed from service.

Question 59: How often should a fire extinguisher be inspected?

Every week.
Every month (Correct answer)
Every six months.
Every three months.

Correct answer: Every month

Fire extinguishers should be inspected monthly to ensure they are in proper working order and readily available for use. This regular frequency, as mandated by standards like NFPA 10, allows for prompt identification of issues such as low pressure, damage, or obstructions. Consistent checks are crucial for maintaining readiness and compliance with safety regulations.

Question 60: What minimum temperature limitation is a critical operational concern for CO2 extinguishers during discharge?

The agent freezes in the cylinder below 32°F (0°C)
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)
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 61: Why should ABC dry chemical extinguishers generally NOT be used in a restaurant kitchen to suppress a grease fire?

ABC dry chemical does not cool the oil and the fire can re-ignite; wet chemical is required (Correct answer)
ABC chemical reacts violently with cooking oils
ABC chemical is too expensive for restaurant use
ABC extinguishers are too small for kitchen fires

Correct answer: ABC dry chemical does not cool the oil and the fire can re-ignite; wet chemical is required

ABC dry chemical can momentarily knock down the flames but does not cool the oil below its ignition temperature, allowing the fire to re-ignite.

Question 62: Which agent is specifically designed for use on fires involving flammable metals such as sodium, potassium, and titanium?

Purple-K dry chemical
Class D dry powder (e.g., sodium chloride, graphite-based) (Correct answer)
Carbon dioxide (CO2)
AFFF foam

Correct answer: Class D dry powder (e.g., sodium chloride, graphite-based)

Class D dry powder agents like sodium chloride or graphite-based compounds are specifically formulated for combustible metal fires.

Question 63: What is the correct hydrostatic test pressure for a stored-pressure dry chemical extinguisher rated at a 195 psi service pressure?

The test pressure is stamped on the cylinder and typically 1.5–2× service pressure (Correct answer)
250 psi
195 psi
300 psi

Correct answer: The test pressure is stamped on the cylinder and typically 1.5–2× service pressure

The hydrostatic test pressure is stamped on the cylinder by the manufacturer and is typically 1.5 to 2 times the service pressure.

Question 64: According to NFPA 10, which of the following extinguishers does NOT require a 6-year internal maintenance interval?

Loaded stream extinguishers
Non-rechargeable (disposable) extinguishers (Correct answer)
Pump-operated water extinguishers
Stored-pressure dry chemical extinguishers

Correct answer: Non-rechargeable (disposable) extinguishers

Non-rechargeable (disposable) extinguishers are exempt from the 6-year internal maintenance requirement and must simply be replaced when they reach their service life.

Question 65: A stored-pressure dry chemical extinguisher differs from a cartridge-operated unit primarily in that it:

Requires no pressure gauge
Has the expellant gas stored separately in a cartridge
Contains both agent and expellant gas in a single cylinder (Correct answer)
Uses a different chemical agent

Correct answer: Contains both agent and expellant gas in a single cylinder

In stored-pressure units, the propellant gas and dry chemical agent share the same cylinder, unlike cartridge-operated units.

Question 66: Multipurpose dry chemical (ABC) extinguishers use which primary agent?

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

Correct answer: Monoammonium phosphate

Monoammonium phosphate is the agent in multipurpose ABC dry chemical extinguishers because it is effective on Class A, B, and C fires.

Question 67: What is the correct pressure range for charging a standard ABC stored-pressure dry chemical extinguisher?

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

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 68: According to NFPA 10, who is qualified to perform annual maintenance on fire extinguishers?

A trained person who has the proper equipment, materials, and knowledge as required by NFPA 10 (Correct answer)
Any building maintenance employee who has read the owner's manual
Only factory-authorized service technicians
An AHJ-certified inspector with at least five years of experience

Correct answer: A trained person who has the proper equipment, materials, and knowledge as required by NFPA 10

NFPA 10 defines the qualified individual as someone with proper equipment, materials, and training/knowledge to perform maintenance per the standard.

Question 69: What maximum permanent expansion percentage typically requires a cylinder to be condemned during hydrostatic testing?

2%
10% (Correct answer)
15%
5%

Correct answer: 10%

A cylinder exhibiting permanent expansion exceeding 10% of total expansion is typically condemned as structurally compromised.

Question 70: Which class of fire extinguisher is required to carry an electrical non-conductivity rating?

Class B only
Class A only
Class D only
Class C (any extinguisher used on energized electrical equipment) (Correct answer)

Correct answer: Class C (any extinguisher used on energized electrical equipment)

Class C rated extinguishers must use non-conductive agents (CO2, dry chemical, clean agent) and are tested to ensure they won't conduct electricity back to the user.

Question 71: Which of the following is a required step when performing the 6-year maintenance on a stored-pressure ABC dry chemical extinguisher?

Install an electronic pressure monitoring sensor
Hydrostatic test the cylinder at 6-year intervals simultaneously
Replace the entire extinguisher with a new unit if it is older than 12 years
Empty the extinguisher, inspect internals, replace all O-rings and gaskets, and refill with fresh agent (Correct answer)

Correct answer: Empty the extinguisher, inspect internals, replace all O-rings and gaskets, and refill with fresh agent

The 6-year maintenance requires complete emptying, internal inspection, replacement of all seals and O-rings, and refill with fresh agent to the rated fill weight.

Question 72: Per NFPA 10, which type of fire extinguisher requires hydrostatic testing every 12 years?

Dry chemical stored-pressure with stainless steel shell (Correct answer)
Halon extinguishers
CO2 extinguishers
Dry chemical stored-pressure with mild steel shell

Correct answer: Dry chemical stored-pressure with stainless steel shell

Stored-pressure dry chemical extinguishers with stainless steel shells have a 12-year hydrostatic test interval per NFPA 10.

Question 73: What should be the first step in a fire risk assessment?

Identifying potential fire hazards (Correct answer)
Planning fire evacuation routes.
Inspecting fire extinguishers.
Evaluating fire safety training.

Correct answer: Identifying potential fire hazards

The first and foundational step in a fire risk assessment is identifying potential fire hazards. This involves systematically surveying the environment to pinpoint all possible sources of ignition, fuel, and oxygen, as well as any conditions that could contribute to a fire. Without this initial identification, subsequent steps like evaluating risks or planning mitigation cannot be effectively carried out.

Question 74: Which type of extinguisher is most appropriate for a printing facility with large quantities of paper (Class A) and ink solvents (Class B)?

Water-only extinguisher
CO2 extinguisher only
ABC multipurpose dry chemical extinguisher (Correct answer)
Class D powder extinguisher

Correct answer: ABC multipurpose dry chemical extinguisher

ABC multipurpose dry chemical addresses both Class A (paper) and Class B (solvent) hazards, making it the correct choice for mixed-hazard facilities.

Question 75: What condition of a dry chemical agent indicates it must be replaced during the 6-year maintenance procedure?

Agent temperature is above ambient room temperature
Agent fails the free-flow test or is visibly clumped/caked (Correct answer)
Agent color has darkened to off-white
Agent weight is less than 105% of rated fill weight

Correct answer: Agent fails the free-flow test or is visibly clumped/caked

NFPA 10 requires replacement if the dry chemical does not flow freely or shows visible caking, clumping, or moisture contamination.

Question 76: What is the significance of the pictogram (symbol-based) labeling system on modern fire extinguishers?

It shows the manufacturer's country of origin
It replaces the letter-based classification system entirely
It provides a visual, language-independent representation of suitable fire classes (Correct answer)
It indicates the extinguisher's pressure rating

Correct answer: It provides a visual, language-independent representation of suitable fire classes

Pictogram labels use visual symbols for each fire class so that users can quickly identify suitability regardless of language.

Question 77: A technician is selecting an extinguisher for a server room. Which agent is preferred to minimize equipment damage?

ABC dry chemical
CO2 or clean agent (Halotron/FM-200) (Correct answer)
AFFF foam
Water

Correct answer: CO2 or clean agent (Halotron/FM-200)

CO2 and clean agents leave no residue, making them ideal for sensitive electronic equipment where dry chemical or water damage would be catastrophic.

Question 78: What is the correct procedure for verifying the pressure of a dry chemical cartridge-operated extinguisher?

Weigh the CO2 or nitrogen cartridge and compare to the manufacturer's full-charge weight (Correct answer)
Puncture the cartridge seal and measure pressure release
Check the pressure gauge mounted on the body of the extinguisher
Attach a test gauge to the charging valve and read pressure

Correct answer: Weigh the CO2 or nitrogen cartridge and compare to the manufacturer's full-charge weight

Cartridge-operated extinguishers do not have body-mounted pressure gauges; the cartridge must be weighed and compared to the stamped full-charge weight.

Question 79: When should fire extinguisher location signs be used?

Only when required by the local AHJ
Only in industrial occupancies
Whenever the extinguisher is not readily visible from normal approaches (Correct answer)
Only in buildings over two stories

Correct answer: Whenever the extinguisher is not readily visible from normal approaches

Location signs are required whenever the extinguisher is not immediately visible from normal approaches to the area.

Question 80: When recharging a dry chemical extinguisher, what must always be done before applying nitrogen pressure?

Verify the valve stem O-ring is seated and the fill cap is secure (Correct answer)
Heat the cylinder to 70°F
Weigh the empty cylinder only
Paint the cylinder with current date

Correct answer: Verify the valve stem O-ring is seated and the fill cap is secure

Before pressurizing, the technician must confirm all seals and caps are properly seated to prevent dangerous gas leakage or ejection.

Question 81: Which extinguisher agent works by forming a vapor-suppressing aqueous film over flammable liquid surfaces?

Sodium bicarbonate dry chemical
Carbon dioxide
Purple-K (PKP)
Aqueous Film-Forming Foam (AFFF) (Correct answer)

Correct answer: Aqueous Film-Forming Foam (AFFF)

AFFF creates an aqueous film that spreads across flammable liquid surfaces, cutting off oxygen and suppressing vapors.

Question 82: 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 83: When is it acceptable to top off (add a small amount of agent) to a partially discharged dry chemical extinguisher instead of fully recharging it?

When less than 10% of the agent was used
Never — partial discharge requires complete recharge (Correct answer)
When it would save the agency money
When the pressure gauge still reads green

Correct answer: Never — partial discharge requires complete recharge

NFPA 10 does not permit topping off; any partial or full discharge requires a complete recharge with fresh agent.

Question 84: For a Class D combustible metal fire involving magnesium, which extinguisher should be used?

CO2
ABC dry chemical
Dry powder specifically rated for the metal involved (e.g., Met-L-X) (Correct answer)
Water

Correct answer: Dry powder specifically rated for the metal involved (e.g., Met-L-X)

Class D fires require a dry powder agent specifically matched to the burning metal — using the wrong agent can make the fire worse.

Question 85: Which extinguishing agent must NEVER be used on Class D combustible metal fires such as magnesium, lithium, or titanium?

Dry sand or graphite powder
Carbon dioxide (CO2)
Water-based agents
Both water-based agents and CO2 (Correct answer)

Correct answer: Both water-based agents and CO2

Both water and CO2 can react violently with burning Class D metals — water can dissociate into hydrogen gas causing explosions, and CO2 can be reduced by some metals to release carbon and intensify burning.

Question 86: Which occupancy classification typically requires the greatest number of fire extinguishers per square foot?

Light hazard
Ordinary hazard
Extra hazard (Correct answer)
All occupancies require the same

Correct answer: Extra hazard

Extra-hazard occupancies require the highest density of extinguishers because of the greater amount and type of combustibles present.

Question 87: When must fire extinguisher inspection and maintenance records be made available?

Upon request by the AHJ (Authority Having Jurisdiction) at any time (Correct answer)
Only if a fire incident occurs
Only during insurance audits
Only at permit renewal

Correct answer: Upon request by the AHJ (Authority Having Jurisdiction) at any time

Records must be available upon request by the AHJ at any time to verify compliance with NFPA 10 and local fire codes.

Question 88: The PASS acronym used to operate a fire extinguisher stands for:

Pull, Assess, Stand, Spray
Press, Aim, Squeeze, Spread
Point, Activate, Stand back, Spray
Pull, Aim, Squeeze, Sweep (Correct answer)

Correct answer: Pull, Aim, Squeeze, Sweep

PASS stands for Pull the pin, Aim at the base of the fire, Squeeze the handle, and Sweep side to side.

Question 89: Which NFPA standard governs the installation, inspection, and maintenance of portable fire extinguishers in the United States?

NFPA 72
NFPA 13
NFPA 10 (Correct answer)
NFPA 25

Correct answer: NFPA 10

NFPA 10, Standard for Portable Fire Extinguishers, is the primary document governing portable extinguisher requirements.

Question 90: According to NFPA 10, which of the following extinguishing agents is classified for use on Class D (combustible metal) fires?

Halon 1211
Dry chemical (ABC)
CO2
Dry powder (e.g., Met-L-X) (Correct answer)

Correct answer: Dry powder (e.g., Met-L-X)

Dry powder agents such as Met-L-X are specifically designed for Class D combustible metal fires and listed for this use.

Question 91: Which type of extinguisher agent is classified as a 'wet chemical' and is primarily used on Class K fires?

Potassium acetate solution (Correct answer)
Carbon dioxide gas
Monoammonium phosphate powder
Halon 1211

Correct answer: Potassium acetate solution

Potassium acetate (and similar potassium-based solutions) form a wet chemical agent that saponifies cooking oils for Class K fires.

Question 92: Under NFPA 10, how often must stored-pressure dry chemical extinguishers with stainless steel shells undergo hydrostatic testing?

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

Correct answer: Every 12 years

Stored-pressure dry chemical extinguishers with stainless steel shells must be hydrostatically tested every 12 years per NFPA 10.

Question 93: Which extinguishing agent is electrically non-conductive and leaves virtually no residue after discharge?

Carbon dioxide (CO2) (Correct answer)
Dry chemical (monoammonium phosphate)
AFFF foam
Wet chemical potassium acetate

Correct answer: Carbon dioxide (CO2)

Carbon dioxide (CO2) is electrically non-conductive and dissipates completely as a gas, leaving no residue on equipment or surfaces.

Question 94: What is the primary extinguishing mechanism of ABC dry chemical agents such as monoammonium phosphate?

Interrupting the chemical chain reaction of combustion (Correct answer)
Cooling the fuel surface below ignition temperature
Forming a physical barrier over the fuel
Diluting oxygen concentration below 15%

Correct answer: Interrupting the chemical chain reaction of combustion

ABC dry chemical agents interrupt the free-radical chain reaction in the flame, which is the primary mechanism by which they extinguish fires.

Question 95: Which factor most significantly reduces the effective discharge range of a CO2 extinguisher in outdoor environments?

High ambient humidity above 70% RH
Low altitude reducing atmospheric pressure differences
Direct sunlight warming the cylinder and reducing pressure
Wind dispersing the CO2 cloud before it reaches the fire (Correct answer)

Correct answer: Wind dispersing the CO2 cloud before it reaches the fire

CO2 is a gas that disperses easily in open air, and wind can carry the CO2 cloud away from the fire before adequate concentrations can be achieved to extinguish the flames.

Question 96: What type of hydrostatic test method involves filling the cylinder with water, pressurizing it, and measuring permanent expansion?

Proof pressure test
Burst test
Pneumatic test
Water jacket test (Correct answer)

Correct answer: Water jacket test

The water jacket test measures total and permanent expansion by immersing the pressurized cylinder in a water-filled jacket and recording displaced water.

Question 97: What is the main goal of a fire risk assessment?

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

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 98: Inert gas blends such as Inergen (IG-541, a mix of nitrogen, argon, and CO2) extinguish fires by which primary mechanism?

Chemical chain reaction inhibition similar to halon
Saponification of fuel vapors at the flame front
Cooling the burning material below its auto-ignition temperature
Reducing oxygen concentration to approximately 12-15% while maintaining breathability (Correct answer)

Correct answer: Reducing oxygen concentration to approximately 12-15% while maintaining breathability

Inert gas agents reduce oxygen to approximately 12-15%, which is below the ~16% needed to sustain combustion but above the ~10% level dangerous to human life for brief exposure.

Question 99: A fire extinguisher must be installed so it is protected from which environmental condition that could affect its operation?

Freezing temperatures that could damage the agent or cylinder (Correct answer)
Normal room temperature
Moderate sunlight
Low humidity

Correct answer: Freezing temperatures that could damage the agent or cylinder

Extinguishers must be protected from freezing because low temperatures can damage water-based agents and cause cylinder failure.

Question 100: Which agent must be used when recharging a Purple-K (PKP) dry chemical extinguisher?

ABC multipurpose dry chemical
Any UL-listed dry chemical agent
Sodium bicarbonate dry chemical
Purple-K potassium bicarbonate dry chemical only (Correct answer)

Correct answer: Purple-K potassium bicarbonate dry chemical only

Purple-K extinguishers must be recharged with Purple-K (potassium bicarbonate) only — mixing dry chemical agents is prohibited.

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.

100

Questions

120 min

Time Limit

75%

To Pass

Checking for saved progress...

Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds