NFPA 10 PORTABLE FIRE EXTINGUISHERS
EXAM SCRIPT PREMIUM REVIEW SHEET
TESTED QUESTIONS AND ANSWERS
●● Can two or more fire extinguishers of lower ratings be used instead
of a higher-rated one?
Answer: No, except as permitted by specific sections.
●● How are light hazard occupancies classified?
Answer: Locations with low quantities and combustibility of Class A
combustibles and Class B flammables.
●● How is the conversion procedure for SI units described in NFPA 10?
Answer: Multiply the quantity by the conversion factor and round the
result to the appropriate number of significant digits.
●● How long must records for manual inspections be kept?
Answer: Records must demonstrate that at least the last 12 monthly
inspections have been performed.
●● How many numerical units of Class B extinguishing potential are
required per square foot of flammable liquid surface?
Answer: At least 2 numerical units per 1 ft² (0.09 m²)
,●● How often should fire extinguishers be inspected?
Answer: At least once per calendar month.
●● Should the selection of fire extinguishers depend on the presence of
fixed protection equipment?
Answer: No, the selection should be independent of fixed protection
equipment.
●● What additional fire extinguishers are required for buildings with
Class B or C fire hazards?
Answer: A standard complement of Class A fire extinguishers plus
additional Class B or Class C fire extinguishers.
●● What are 'Obsolete Fire Extinguishers' as mentioned in Chapter 4?
Answer: Fire extinguishers that are no longer compliant with current
safety standards.
●● What are Class A fires?
Answer: Fires in ordinary combustible materials such as wood, cloth,
paper, rubber, and many plastics.
●● What are Class B fires?
,Answer: Fires in flammable liquids, combustible liquids, petroleum
greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and
flammable gases.
●● What are Class C fires?
Answer: Fires that involve energized electrical equipment.
●● What are Class D fires?
Answer: Fires in combustible metals such as magnesium, titanium,
zirconium, sodium, lithium, and potassium.
●● What are Class K fires?
Answer: Fires in cooking appliances that involve combustible cooking
media like vegetable or animal oils and fats.
●● What are Halogenated Agents?
Answer: Clean agents referenced in standards that include various types
of halocarbons.
●● What are Halons?
Answer: Bromochlorodifluoromethane (Halon 1211) and
bromotrifluoromethane (Halon 1301) used in fire extinguishing.
●● What are Pressurized Flammable Liquid Fires?
, Answer: Fires resulting from liquids that are forced, pumped, or sprayed.
●● What are the general fire protection requirements of NFPA 10?
Answer: They are general in nature and do not abrogate specific
requirements of other NFPA standards for specific occupancies.
●● What are the general requirements for fire extinguishers according to
ANSI/UL standards?
Answer: Portable fire extinguishers must be listed and labeled, meeting
or exceeding ANSI/UL 711, CAN/ULC-S508, and other applicable
performance standards.
●● What are the installation requirements for portable fire
extinguishers?
Answer: They must be securely hung, in brackets, or in approved
cabinets.
●● What chapter covers the definitions related to fire extinguishers?
Answer: Chapter 3: Definitions
●● What conditions require additional visual inspections of fire
extinguishers?
EXAM SCRIPT PREMIUM REVIEW SHEET
TESTED QUESTIONS AND ANSWERS
●● Can two or more fire extinguishers of lower ratings be used instead
of a higher-rated one?
Answer: No, except as permitted by specific sections.
●● How are light hazard occupancies classified?
Answer: Locations with low quantities and combustibility of Class A
combustibles and Class B flammables.
●● How is the conversion procedure for SI units described in NFPA 10?
Answer: Multiply the quantity by the conversion factor and round the
result to the appropriate number of significant digits.
●● How long must records for manual inspections be kept?
Answer: Records must demonstrate that at least the last 12 monthly
inspections have been performed.
●● How many numerical units of Class B extinguishing potential are
required per square foot of flammable liquid surface?
Answer: At least 2 numerical units per 1 ft² (0.09 m²)
,●● How often should fire extinguishers be inspected?
Answer: At least once per calendar month.
●● Should the selection of fire extinguishers depend on the presence of
fixed protection equipment?
Answer: No, the selection should be independent of fixed protection
equipment.
●● What additional fire extinguishers are required for buildings with
Class B or C fire hazards?
Answer: A standard complement of Class A fire extinguishers plus
additional Class B or Class C fire extinguishers.
●● What are 'Obsolete Fire Extinguishers' as mentioned in Chapter 4?
Answer: Fire extinguishers that are no longer compliant with current
safety standards.
●● What are Class A fires?
Answer: Fires in ordinary combustible materials such as wood, cloth,
paper, rubber, and many plastics.
●● What are Class B fires?
,Answer: Fires in flammable liquids, combustible liquids, petroleum
greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and
flammable gases.
●● What are Class C fires?
Answer: Fires that involve energized electrical equipment.
●● What are Class D fires?
Answer: Fires in combustible metals such as magnesium, titanium,
zirconium, sodium, lithium, and potassium.
●● What are Class K fires?
Answer: Fires in cooking appliances that involve combustible cooking
media like vegetable or animal oils and fats.
●● What are Halogenated Agents?
Answer: Clean agents referenced in standards that include various types
of halocarbons.
●● What are Halons?
Answer: Bromochlorodifluoromethane (Halon 1211) and
bromotrifluoromethane (Halon 1301) used in fire extinguishing.
●● What are Pressurized Flammable Liquid Fires?
, Answer: Fires resulting from liquids that are forced, pumped, or sprayed.
●● What are the general fire protection requirements of NFPA 10?
Answer: They are general in nature and do not abrogate specific
requirements of other NFPA standards for specific occupancies.
●● What are the general requirements for fire extinguishers according to
ANSI/UL standards?
Answer: Portable fire extinguishers must be listed and labeled, meeting
or exceeding ANSI/UL 711, CAN/ULC-S508, and other applicable
performance standards.
●● What are the installation requirements for portable fire
extinguishers?
Answer: They must be securely hung, in brackets, or in approved
cabinets.
●● What chapter covers the definitions related to fire extinguishers?
Answer: Chapter 3: Definitions
●● What conditions require additional visual inspections of fire
extinguishers?
