NFPA 10 PFE Chapter 5 Selection of Portable Fire Extinguishers 21 Questions with Verified Answers,100% CORRECT

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NFPA 10 PFE Chapter 5 Selection of Portable Fire Extinguishers 21 Questions with Verified Answers What are 6 steps to determine what type of FE to use? - CORRECT ANSWER 5.1 1. Type of fire most lik ... ely to occur 2. Size of fire most likely to occur 3. Hazards in the area where fire is most likely to occur 4. Energized electrical equipment in the area 5. Ambient temperature conditions What are the 5 classifications of fire? - CORRECT ANSWER 5.2 5 Classes. Class A, Class B, Class C, Class D, Class K What is a Class A Fire? - CORRECT ANSWER 5.2.1 Ordinary combustibles such as wood, cloth, paper, rubber and many plastics. What is a Class B Fire? - CORRECT ANSWER 5.2.2 Fires in flammable liquids, combustible liquids, petroluem greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases. What is a Class C Fire? - CORRECT ANSWER 5.2.3 Fires that involve energized electrical equipment. What is a Class D Fire? - CORRECT ANSWER 5.2.4 Fires in combustible metals, such as magnesium, titanium, zirconium, sodium, lithium and potassium. What is a Class K Fire? - CORRECT ANSWER 5.2.5 Fires in cooking appliances that involve combustible cooking media (Vegetable or animal oils/fats) Electronic Equipment Fires & Dry Chemical Extinguishers. - CORRECT ANSWER Dry chemical extinguishers shall not be installed for the protection of delicate electronic equipment. What is considered a Light Hazard? - CORRECT ANSWER 5.4.1.1 Locations where the quantity and combustibility of Class A and Class B are low and low rates of heat are expected. Less than 1 gallon of flammables in any room. What is considered an Ordinary Hazard? - CORRECT ANSWER 5.4.1.2 Locations where the quantity and combustibility of Class A and Class B are moderate and moderate rates of heat are expected. 1-5 gallons of flammables in any room. What is considered an Extra Hazard? - CORRECT ANSWER 5.4.1.3 Locations where the quantity and combustibility of Class A and Class B are high and high rates of heat are expected. More than 5 gallons of flammables in any room. What fire extinguishers should be used for 3-dimensional fires? - CORRECT ANSWER 5.5.2 Large-capacity dry chemical fe of 10lbs or greater and discharge rate of 1 lb/sec shall be used. What cannot be used on Water-Soluble Flammable Liquid Fires? - CORRECT ANSWER 5.5.4 AFFF & FFFP cannot be used on these types of fires. What is how do you select a FE for an Electronic Equipment Fires? - CORRECT ANSWER 5.5.6 FE shall be selected from types listed for Class C hazards. Dry chemical FE shall not be installed. What is type of FE used for storage of pool chemicals? i.e. chlorine, bromine - CORRECT ANSWER 5.5.7 Water or foam extinguishers. NO multipurpose dry chemical FE When is a FE rating number used? - CORRECT ANSWER 5.3.1.1 They shall be used on FE for use on Class A or Class B hazards. It indicates the extinguishing effectiveness. What is when you use Halon FE? - CORRECT ANSWER 5.3.2.6 Limited to fires where it is necessary to extinguish fire without damaging the equipment. What is when you use wheeled fire extinguishers? - CORRECT ANSWER 5.3.2.7 1. High hazards are present. 2. Limited personnel are available. How do you select a FE for an obstacle fire? - CORRECT ANSWER 5.5.3 1. Extinguisher containing a vapor-suppressing foam agent, 2. Multiple FE containing non-vapor suppressing Class B agents intended for simultaneous application. 3. Larger capacity FE of 10lbs or greater and a min. discharge rate of 1 lb/sec. What is the Extinguisher Classification System? - CORRECT ANSWER 5.3.1 Shall consist of a letter that indicates the class of fire on which a FE has been found to be effective. What is FE Classification for Class A or Class B fires? - CORRECT ANSWER 5.3.1.1 Shall be required to have a rating number preceding the classification letter that indicates the relative extinguishing effectiveness. [Show More]

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