NFPA 10 Study Guide 2024-2025 Edition. Questions and 100% Correct, Verified Answers., Exams of Engineering

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NFPA 10 Study Guide 2024-

Edition. Questions and 100% Correct,

Verified Answers. Graded A

3-Dimensional fires require what discharge rate? - ANS10lb or greater and a discharge rate of 1 lb/sec a High-Pressure Cylinder is held to what pressure? - ANSHigher than 500 psi a Light Hazard is what? - ANSQuantity and combustibility of class A & B are low and Quantity of Class b is less that 1 gallon A Low-Pressure cylinder is held to what pressure? - ANS500 psi or less at 70 ℉ All cooking appliances with a fire box of 5 ft³ or less shall have what? - ANSone 2A rated water-type extinguisher or a 1.6 gal class K rated wet chemical extinguisher Aqueous Film Forming Foam and Film Forming Flouride Protein Foam shall NOT be used for what? - ANSThe protection of water-soluble flammable liquids, such a alcohol, acetone, esters, ketones, unless specifically referenced on the fire extinguisher nameplate

Are persons training to become certified, authorized to perform maintenance and recharging etinguishers? - ANSonly under immediate supervision of a certified person Cabinets housing extinguishers shall not be locked, except when? - ANSWhen they are subject to malicious intent and cabinets have emergency access Can 2 water-type extinguishers, rated 1A be used to fulfill the requirements of one 2A extinguisher? - ANSYes Choosing an extinguisher for Obstacle Fires shall be based on the following

• ANSExtinguisher contains a vapor suppressing foam, multiple extinguishers for class B agents, and larger capacity (10lb) with a discharge rate of 1 lb/sec Class A Fires are what? - ANSOrdinary Materials such as wood, cloth, paper, rubber, and many plastics Class B Fire are what? - ANSFlammable liquids, combustible liquids, combustible liquids, petroleum greases, tars, oils, oil based paints, solvents, laquers, alcohols and flammable gases Class B fires require that the discharge rate be what? - ANS10 lb or greater and a discharge rate of 1 lb/sec

Class C Fires are what? - ANSElectrical Fires Class D Fires are what? - ANSCombustible Metals such as Magnesium, Zirconium, Titanium Class K Fires are what? - ANSFires in cooking appliances that involve combustible cooking media (Vegetable or animal oils and fats) Does the use of sprinklers, standpipe, hose or other fixed fire protection change where portable fire extinguishers are required? - ANSNo, install of fire extinguishers is seperate Fire extinguisher under 40 lbs shall be installed how? - ANSSO that the top of the fire extinguisher is not more than 5 ft above the floor Fire extinguishers and Class D extinguishing agents shall be inspected how often? - ANSLess than 31 days and at least once per calendar month Fire Extinguishers containing only plain water shall be protected at temperatures as low as what? - ANS-40℉, by the use of Antifreeze Fire Extinguishers shall be located so that the maximum distance of travel is what? - ANSless that 75ft Fire extinguishers with a weight over 40 lbs shall be installed how? - ANSSO that the fire extinguisher is less than 3½ ft off the floor

If Class D extinguishers have conditions that require they be inspected more frequently, how often? - ANSDaily or weekly In NO case shall the clearance between the bottom of the extinguisher and the floor be less than how high? - ANS4 inches Inspection procedures - ANSlocated in designated place, no obstruction, pressure gauge is operable, fullness determined by weight. condition of tires, wheels, carriage, hose and nozzle for wheeled Inspection procedures for Class D is what? - ANSLocated in designated place, no obstructions, lid is sealed, fullness by weight, and no obvious damage Internal exam interval of store-pressure loaded system, pump tank water with calcium chloride, dry chem cartridge and cylinder operated with mild steel shells and wetting agents is how long? - ANS1 year Internal examination interval of AFFF and FFFP is how long? - ANS3 Years with extinguishing agent replaced Internal examination interval of stored pressure dry chem with stainless shell is how long? - ANS5 Years

Internal examination interval of stored-pressure water i show long? - ANS years Internal Examination of dry chem with brazed brass shells, halogenated agents, and dry powder stored_pressure with steel shells shall occur when? - ANS6 Years Maximum travel distance for Class D hazard? - ANS75 ft or less Maximum travel distance for Class K hazard? - ANS30 ft or less Maximum travel distance for obstacle, 3D, or pressure fire hazards? - ANS30 ft Maximum travel distance to 3D, pressure, obstacle fire with a wheeled extinguisher is=? - ANS100 ft Ordinary Hazard is what? - ANSQuantity and combustibility of Class A & B are moderate. Total quantity of Class B is 1 gallon - 5 gallon Tag or label, as a minimum shall identify what? - ANSMonth and year maintenance was performed Person performing work Name of Agency performing work

True or False? Two AFFF or FFFP extinguishers of atleast 1.6 gal is permitted to fulfill ordinary hazard requirements - ANSTrue What is an Extra Hazard - ANSQuantity and combustibility of Class A & B are High or were high amounts of Class B are present. Total quantity of Class B is over 5 gallons What is required when a hazard is protected by an automatic fire suppression system? - ANSPlacard shall be placed conspicuously near the extinguisher that states the fire protection system before a portable extinguisher What Shall not be used in stainless steel extinguishers? - ANSCalcium Chloride What type of extinguisher shall be installed in areas containing oxidizers, such as pool chemicals? - ANSDry chemical Wheeled fire extinguishers can be considered for hazard protection for what reasons? - ANSHigh hazard areas are present and limited personnel: requiring: High flow rate Increased stream range Increased capacity

When signs are used to identify the location of an extinguisher, they shall comply with what? - ANSBe in close proximity to the extinguisher and be visible from the normal path of travel Which extinguishers are required to have a rating number preceding the classification letter? - ANSClass A & B extinguishers Which extinguishers do not require a number before the classification letter? - ANSClasses C, D and K