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A series of questions and answers related to nfpa 10, a standard for portable fire extinguishers. It covers various aspects of fire extinguisher types, classifications, maintenance, and testing procedures. Useful for individuals seeking to understand the fundamentals of fire extinguisher safety and compliance.
Typology: Exams
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Examples of extinguishers for protecting class B hazards are
A. aqueous film forming foam
B. Carbon dioxide
c.Wet chemical
d. A and B only
E. all the above ✔✔D. A and B only
A church is classified as what type of hazard?
A. light(low) hazard
B.Ordinary(moderate) hazard
C. Extra(high) hazard
D. Special(unusual) hazard ✔✔A. Light hazard
A parking garage is classified as what type of hazard?
A. light(low) hazard
B.Ordinary(moderate) hazard
C. Extra(high) hazard
D. Special(unusual) hazard ✔✔B. ordinary
A boat or aircraft servicing is classified as what type of hazard?
A. light(low) hazard
B.Ordinary(moderate) hazard
C. Extra(high) hazard
D. Special(unusual) hazard ✔✔C. extra
Building protection should be provided by fire extinguishers suitable for what class of fire extinguishers?
A. Class a
B class B
C. class C
D. All the above ✔✔D. All the above
An ordinary hazard occupancy is also designated as a ______ hazard occupancy
A. normal
B.50 ft
C. 75 ft
D.100 ft ✔✔B. 50 ft
The maximum travel distance for a class C hazard is
A.30 ft
B.50 ft
C. 75 ft
D.none of the above ✔✔
Who is responsible to ensure that proper maintenance, inspection, and recharging is conducted for all five extinguishers in the premises
A.Fire dept
B.authority having jurisdiction
C. owner
D.service technician ✔✔C. owner
Carbon dioxide hose assemblies that pass the conductivity test shall have the test information recorded on a label that is attached to the
A.fire extinguisher
B.carrying handle
C. hose assembly
D.Discharge lever ✔✔hose assembly
Internal examination of the extinguisher is a required procedure during the annual maintenance for which of the following type of extinguisher
A.stored pressure dry chemical
B.Cartridge operated dry chemical
C. Carbon dioxide
D.None of the above ✔✔B. cartridge operated dry chemical
Which of the following type of fire extinguisher does not require a six year internal maintenance?
A. cartridge operated dry chemical
B.stored pressure dry powder
C. stored pressure halogenated agent
A.CONDEMNED must be stamped on the sylinder
B.the owner must be notified that the cylinder may not be reused
C. The owner mist be notified in writing that the cylinder is condemned
D.All the above ✔✔D. all the above
Nitrogen and argon cylinders require a five year hydrostatic retest unless a ________ test interval is specifically permitted by the US department of Transportation
A.6 year
B. 10 year
C. 12 year
D.None of the above ✔✔
the discharge hose assembly equipped with a shutoff nozzle;e on a cartridge operated dry chemical extinguisher must be hydrostatically tested at what interval
A.5 years
B.6 years
C. 10 years
D.12 years ✔✔
What is the correct hydrostatic test pressure for a stored pressure dry chemical fire extinguisher?
A.300 psi
B.5/3 times the operating pressure
C. 2 time the operating pressure
D.None of the above ✔✔A. 300 psi
What is the minimum frequency for calibrating the master pressure gauges used for hydrostatic testing of fire extinguisher cylinders, shells, and accessories
A.Quarterly
B.Semi-annually
C. Annually
D.None of the above ✔✔B. semi annually
A three dimensional fire often involves static flammable liquid
True
False ✔✔False
There are four classes of fire, Class A, B, C, and K
True/False ✔✔False
Class B fires are those fires that occur involving paper and wood.
True/False ✔✔False
Multipurpose dry chemical extinguishers are effective on all classes except D and K fires.
True/False ✔✔True
Who does NFPA strongly recommend to be notified as soon as fire is discovered? ✔✔Fire department
For an extinguisher to successfully function, what four conditions must be met? ✔✔1.Located in accordance to requirements
2.Is correct type for a fire that can occur
3.The fire is discovered while still small enough for extinguisher to be effective
Who has the ultimate obligation for the care and use of extinguishers?
the __________ or ____________- of a property ✔✔Owner or occupant
Portable fire extinguishers are appliances to be used principally by whom? ✔✔Occupants of the building
What is the abbreviation for International System of Units? ✔✔SI
What does CGA stand for ✔✔Compressed Gas Association
What does UL stand for? ✔✔Underwriters Laboratories
Acceptable to the authority having jurisdiction ✔✔Approved
An organization office or individual responsible for enforcing the requirements of a code or standard or for approving equipment, materials, an installation or a procedure ✔✔AHJ
Production of Halon 1211 and Halon 1301 ceased in what year ✔✔ 1994
What is hydrostatic testing ✔✔Pressure testing of the extinguisher to verify its strength against unwanted rupture.
A water-based extinguishing agent that uses and alike metal salt to prevent freezing is called what? ✔✔Loaded stream charge
The normal operating pressure as indicated on the nameplate or cylinder of a fire extinguisher is known as the ✔✔Extinguisher service pressure
The pressure shown on the nameplate at which a shell was tested at time of manufacture is known as the ✔✔Factory test pressure
Servicing includes performing what 3 things> ✔✔Maintenance
Recharging
Hydrostatic Testing
Travel distance is the _____ ______ distance from any point to the nearest fire extinguisher fulfilling hazard requirements ✔✔nearest walking
Although Carbon dioxide is a gas, it can be an effective extinguishing agent because it is _____ times heavier than air ✔✔1.
A high pressure cylinder contains fire extinguishing agents at a pressure higher than ______ psi ✔✔ 500
A low-pressure cylinder contains fire extinguishing agents at a pressure lower than ______ psi ✔✔ 500
Cartridge / cylinder operated fire extinguisher are different than most extinguishers in the ______ gas is in a separate container from the agent ✔✔expellant
What do you call a fire extinguisher in which the agents have sufficient vapor pressure to expel themselves? ✔✔Self expelling extinguisher
Class A fires involve ✔✔Common Combustibles such as paper, wood, cloth, rubber, plastics
Class B fires involve ✔✔Usually involve flammable liquids, greases, tars oils, paints, alcohols, and flammable gases
Class C fires involve ✔✔Usually involve live electrical equipment
Class D fires involve ✔✔Fires involving combustible metals such as magnesium, titanium, zirconium, sodium, and potassium.
Class K fires involve ✔✔cooking appliances that involve combustible cooking
media (vegetable or animal oils and fats).
What Class extinguishers are required to have a rating number preceding the classification letter that indicates the relative extinguishing effectiveness ✔✔Class A or B
Class C, D, and K extinguishers are not required to have what? ✔✔number preceding the classification letter
The use of a halogenated fire extinguisher shall be limited to applications where a ______ _______ is necessary to extinguish effectively without damaging the equipment OR where the use of alternative agents have the potential to cause a hazard to ________ ✔✔clean agent
personnel
Placement of portable fire extinguishers containing halogenated agents should conform to ________ _______ _______ warnings contained on the extinguisher nameplate. ✔✔Minimum confined space volume
Fire extinguishers are provided to protect what two things ✔✔Building structure and occupancy hazards
Most buildings have class _____ hazards ✔✔A
Extinguishers provided for building protection shall also be considered for the protection of occupancies having a Class _____ fire ✔✔A
What are the preferred locations for fire extinguishers? ✔✔Along normal paths of travel and exits
When does NFPA permit cabinets to be locked? ✔✔Subject to malicious use and include means of emergency access
What is the required practice for installing extinguishers in conditions where they are subject to dislodgement? ✔✔Strap type brackets
Fire extinguishers having a gross weight not exceeding 40lbs shall be installed so that the top of the extinguisher is no more the _______ ft above the floor ✔✔ 5
Fire extinguishers having a gross weight greater than 40lbs shall be installed so that the top of the extinguisher is no more the _______ ft above the floor ✔✔3.
In no case shall the clearance between the bottom of the extinguisher and the floor be less than ______ ✔✔4in
HMIS, 6 year, hydrostatic test or other labels shall not be placed on what part of the extinguisher? ✔✔the front
What is the minimum Class A rating for a single fire extinguisher for light and ordinary hazard occupancy/ ✔✔2-A
For a 3000 sq ft facility, how many 2-A rated extinguishers would be required for ordinary hazard occupancy? ✔✔ 2
What is the maximum travel distance to a Class A extinguisher? ✔✔75ft
What is the minimum travel distance to a 20-B rated extinguisher in an ordinary area? ✔✔50ft
How should hazard areas involving Class B fires in flammable liquids of appreciable depth that are not manned all of the time be protected? ✔✔By fixed systems
Travel distances for portable extinguishers used to protect flammable liquids of appreciable depth shall not exceed ____ ft ✔✔ 50
