NFPA 10 Exam 109 Questions with Verified Answers,100% CORRECT

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NFPA 10 Exam 109 Questions with Verified Answers 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER D. All the above An ordinary hazard occupancy is also designated as a ______ hazard occupancy A. normal B. significant c. medium D. moderate - CORRECT ANSWER D. moderate The minimum rated single fire extinguisher for an Extra Class A hazard occupancy A.2-A b. 2-A 10 BC C. 4-A D. 4-A 10BC - CORRECT ANSWER C. 4-A The maximum floor area per unit of a rating for an Ordinary Class A Hazard Occupancy is A.1000 sq ft B.1500 sq ft C. 2000 sq ft D.2500 sq ft - CORRECT ANSWER A. 1000 sq ft The maximum travel distance to an 80-B extinguisher for an Extra B hazard is A.30 ftt B.50 ft C. 75 ft D.100 ft - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 D.stored pressure water - CORRECT ANSWER d. stored pressure water Which of the following type of extinguishers does not require a "verification of service" collar A.Cartridge operated dry chemical B.Class K C. Pressurized water D.Stored pressure wheeled - CORRECT ANSWER A Cartridge operated dry chemical Which of the following is not justification for condemning a cylinder during the visual examination A.the extinguisher shows evidence of being burned in a fire B.there is pitting under a removable nameplate C. the paint on the cylinder is peeling away D.The fire extinguisher was used to dispel an insecticide - CORRECT ANSWER C. the paint on the cylinder is peeling away When a fire extinguisher cylinder, shell, or cartridge must be condemned because it fails hydrostatic pressure test of fails to pass visual examination, which of the following procedures must be performed 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER B. semi annually A three dimensional fire often involves static flammable liquid True False - CORRECT ANSWER False Class A fire extinguishers (choose all that apply) are okay for wood are okay for paper are NEVER okay for plastics are NEVER okay for textiles offer the coating effects for dry chemicals - CORRECT ANSWER Dry chemical stored pressure extinguishers: A.are recommended for complex buildings B.are recommended for small facilities C. should be replaced - CORRECT ANSWER C should be replaced The four elements that must be present for fire to exist include heat, oxygen, fuel, and a chemical reaction between the three. True/False - CORRECT ANSWER True The concept of fire prevention is to keep these elements separate. True/False - CORRECT ANSWER True There are four classes of fire, Class A, B, C, and K True/False - CORRECT ANSWER False Class B fires are those fires that occur involving paper and wood. True/False - CORRECT ANSWER False Multipurpose dry chemical extinguishers are effective on all classes except D and K fires. True/False - CORRECT ANSWER True Who does NFPA strongly recommend to be notified as soon as fire is discovered? - CORRECT ANSWER Fire department For an extinguisher to successfully function, what four conditions must be met? - CORRECT ANSWER 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 4. Fire discovered by person ready, willing and able to use the extinguisher Who has the ultimate obligation for the care and use of extinguishers? the __________ or ____________- of a property - CORRECT ANSWER Owner or occupant Portable fire extinguishers are appliances to be used principally by whom? - CORRECT ANSWER Occupants of the building What is the abbreviation for International System of Units? - CORRECT ANSWER SI What does CGA stand for - CORRECT ANSWER Compressed Gas Association What does UL stand for? - CORRECT ANSWER Underwriters Laboratories Acceptable to the authority having jurisdiction - CORRECT ANSWER 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 - CORRECT ANSWER AHJ Indicates a mandatory requirement - CORRECT ANSWER Shall Indicated a recommendation or is advised but not required - CORRECT ANSWER Should NFPA approves equipment True/False - CORRECT ANSWER A piece of equipment that is "labeled" indicated compliance with what - CORRECT ANSWER Appropriate standards or performance in specified manner An "extinguisher inspection" is a _______ check - CORRECT ANSWER Quick "Maintenence" is a __________ examination - CORRECT ANSWER thorough What are the two film forming agents - CORRECT ANSWER AFFF FFFP How does NFPA 10 define :flammable liquids of appreciable depth? - CORRECT ANSWER Depth greater than 1/4 in Production of Halon 1211 and Halon 1301 ceased in what year - CORRECT ANSWER 1994 What is hydrostatic testing - CORRECT ANSWER 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? - CORRECT ANSWER Loaded stream charge The normal operating pressure as indicated on the nameplate or cylinder of a fire extinguisher is known as the - CORRECT ANSWER Extinguisher service pressure The pressure shown on the nameplate at which a shell was tested at time of manufacture is known as the - CORRECT ANSWER Factory test pressure Servicing includes performing what 3 things> - CORRECT ANSWER Maintenance Recharging Hydrostatic Testing Travel distance is the _____ ______ distance from any point to the nearest fire extinguisher fulfilling hazard requirements - CORRECT ANSWER nearest walking Although Carbon dioxide is a gas, it can be an effective extinguishing agent because it is _____ times heavier than air - CORRECT ANSWER 1.5 A high pressure cylinder contains fire extinguishing agents at a pressure higher than ______ psi - CORRECT ANSWER 500 A low-pressure cylinder contains fire extinguishing agents at a pressure lower than ______ psi - CORRECT ANSWER 500 Cartridge / cylinder operated fire extinguisher are different than most extinguishers in the ______ gas is in a separate container from the agent - CORRECT ANSWER expellant What do you call a fire extinguisher in which the agents have sufficient vapor pressure to expel themselves? - CORRECT ANSWER Self expelling extinguisher fire extinguishers in which both the extinguishing material and expelling gas are kept in a single container (and which have a pressure gauge) are called what? - CORRECT ANSWER Stored pressure extinguishers Is a wheeled fire extinguisher considered a portable fire extinguisher? - CORRECT ANSWER Yes Portable fire extinguishers shall be ______ and _____ and meet all of the requirements of one of the fire test standards indicated - CORRECT ANSWER listed and labeled Extinguishers listed for the Class C rating shall not contain an agent that is a conductor of ________ - CORRECT ANSWER Electricity Dry chemical stored pressure extinguishers manufactured prior to _____________ shall be removed from service at the next 6 year maintenance interval or the next hydrostatic test whichever comes first - CORRECT ANSWER October 1984 Any fire extinguisher that can no longer be serviced in accordance with the manufacturers maintenance manual is considered to be _______ and shall be ________ from service - CORRECT ANSWER obsolete, removed Class A fires involve - CORRECT ANSWER Common Combustibles such as paper, wood, cloth, rubber, plastics Class B fires involve - CORRECT ANSWER Usually involve flammable liquids, greases, tars oils, paints, alcohols, and flammable gases Class C fires involve - CORRECT ANSWER Usually involve live electrical equipment Class D fires involve - CORRECT ANSWER Fires involving combustible metals such as magnesium, titanium, zirconium, sodium, and potassium. Class K fires involve - CORRECT ANSWER 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 - CORRECT ANSWER Class A or B Class C, D, and K extinguishers are not required to have what? - CORRECT ANSWER 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 ________ - CORRECT ANSWER clean agent personnel Placement of portable fire extinguishers containing halogenated agents should conform to ________ _______ _______ warnings contained on the extinguisher nameplate. - CORRECT ANSWER Minimum confined space volume Fire extinguishers are provided to protect what two things - CORRECT ANSWER Building structure and occupancy hazards Most buildings have class _____ hazards - CORRECT ANSWER A Extinguishers provided for building protection shall also be considered for the protection of occupancies having a Class _____ fire - CORRECT ANSWER A Extinguishers with more than one letter classification are permitted to satisfy the requirements of ______ letter class - CORRECT ANSWER each Three dimensional Class B fires involve-pouring, running or dripping _______ ________ - CORRECT ANSWER flammable liquids What is the required minimum discharge rate for a large capacity dry chemical extinguisher 10lb or greater used to protect a 3d fire? - CORRECT ANSWER 1lb/sec How can you tell if an AFFF or FFFP type extinguisher can be used for the protection of water soluble flammable liquids such as alcohols? - CORRECT ANSWER They should not unless listed on nameplate Class K fire extinguishers manufactured after January 1 2002 should not be equipped with what type of discharge device? - CORRECT ANSWER extended wand type What warning language is recommended for a typical class K placard? - CORRECT ANSWER In case of appliance fire, use this extinguisher after fixed suppression system has been actuated Delicate electronic equipment examples - CORRECT ANSWER data processing, computers, CAD, CAM robotics What are the preferred locations for fire extinguishers? - CORRECT ANSWER Along normal paths of travel and exits When does NFPA permit cabinets to be locked? - CORRECT ANSWER 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? - CORRECT ANSWER 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 - CORRECT ANSWER 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 - CORRECT ANSWER 3.5 In no case shall the clearance between the bottom of the extinguisher and the floor be less than ______ - CORRECT ANSWER 4in HMIS, 6 year, hydrostatic test or other labels shall not be placed on what part of the extinguisher? - CORRECT ANSWER the front What is the minimum Class A rating for a single fire extinguisher for light and ordinary hazard occupancy/ - CORRECT ANSWER 2-A For a 3000 sq ft facility, how many 2-A rated extinguishers would be required for ordinary hazard occupancy? - CORRECT ANSWER 2 What is the maximum travel distance to a Class A extinguisher? - CORRECT ANSWER 75ft What is the minimum travel distance to a 20-B rated extinguisher in an ordinary area? - CORRECT ANSWER 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? - CORRECT ANSWER By fixed systems Travel distances for portable extinguishers used to protect flammable liquids of appreciable depth shall not exceed ____ ft - CORRECT ANSWER 50 What action should be taken to prevent resignation of class C fire? - CORRECT ANSWER De-energize The maximum travel distance to a class D fire is _____ ft - CORRECT ANSWER 75 What determines the size of Class D extinguisher in class D hazards? 1. 2. 3. 4. - CORRECT ANSWER 1. Specific combustible metal 2. Physical particle size 3. Area to be covered 4. Recommendations from manufacturer Maximum distance to class K extinguishers - CORRECT ANSWER 30ft What shall not be used as the sole medium pressure testing? - CORRECT ANSWER Air or other gases Why should air be vented prior to hydrostatic testing? - CORRECT ANSWER to prevent violent and dangerous failure of the cylinder Test pressure gauges shall be accurate to +/-___-% or better of the full range of the gauge - CORRECT ANSWER .5 Test pressure gauges shall be capable of being read within ___% of test pressure - CORRECT ANSWER 1 Test pressure gauges shall be capable of indicating ____% to __% of the test pressure - CORRECT ANSWER 90 110 How often must gauges used on test equipment be calibrated? - CORRECT ANSWER semiannually How often must master gauges or dead weight testers be calibrated? - CORRECT ANSWER annually What is the maximum temp allowed in drying of tested cylinders? - CORRECT ANSWER 150F Is it permissible to leave hose assembelies on cartridge operated fire extinguishers while hydrostatically testing them? - CORRECT ANSWER no [Show More]

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