TFM02 Extinguisher Inspection Exam Test 2024 Questions and Answers, Exams of Safety and Fire Engineering

Download TFM02 Extinguisher Inspection Exam Test 2024 Questions and Answers and more Exams Safety and Fire Engineering in PDF only on Docsity! TFM02 Extinguisher Inspection Exam Test 2024 Questions and Answers (Graded A) Clean Agent - ANSWER-Electrically non-conducting, volatile, or gaseous fire extinguishant that does not leave a residue upon evaporation. High-Pressure Cylinder - ANSWER-containing nitrogen, compressed air, carbon dioxide, or other gases at a pressure higher than 500 psi (3447 kPa) at 70°F (21°C). Low-Pressure Cylinder - ANSWER-containing fire- extinguishing agent (medium), nitrogen, compressed air, or other compressed gases at a service pressure of 500 psi (3447 kPa) or lower at 70°F (21°C). Dry Powder - ANSWER-Solid materials in powder or granular form designed to extinguish CLASS D combustible metal fires by crusting, smothering, or heat- transferring means. Flammable Liquids of Appreciable Depth are those with a depth greater than - ANSWER-1/4 in What are halogenated agents - ANSWER-clean agents acceptable halons? - ANSWER-1211, 1301 Each fire extinguisher shall be marked with the following: - ANSWER-(1) Identification of the listing and labeling organization (2) Product category indicating the type of extinguisher (3) Extinguisher classification as indicated in Section 5.3 (4) Performance and fire test standards that the extinguisher meets or exceeds Class D extinguishing agents hall comply with: - ANSWER-ANSI/UL 711, CAN/ULC-S508. ExtinguisherslistedfortheClassC rating shall not contain an agent that is a - ANSWER- conductor of electricity Obsolete extinguishers - ANSWER-(1) Soda acid (2) Chemical foam (excluding film-forming agents) (3) Vaporizing liquid (e.g., carbon tetrachloride) (4) Cartridge-operated water (5) Cartridge-operated loaded stream (6) Copper or brass shell (excluding pump tanks) joined by soft solder or rivets (7) Carbon dioxide extinguishers with metal horns Dry chemical stored-pressure extinguishers manufac- tured prior to October _________ shall be removed from service at the next 6-year maintenance interval or the next hydrotest, whichever comes first. - ANSWER-1984 Class A Fires - ANSWER-Class A fires are fires in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics. Class B Fires - ANSWER-ClassB fires are fires in flammable liquids, combustible LIQUIDS, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases. Class C Fires - ANSWER-Class C fires are fires that involve energized ELECTRICAL equipment. Class D Fires - ANSWER-Class D fires are fires in combustible METALS, such as magnesium, titanium, zirconium, sodium, lithium, and potassium. Class K Fires - ANSWER-Class K fires are fires in COOKING APPLIANCES that involve combustible cooking media (vegetable or animal oils and fats). Which specification of extinguishers must have a rating with it - ANSWER-A and B Where should halon be used - ANSWER-where a clean agent is necessary without damaging the equipment or area being protected or where the use of alternative agents has the potential to cause a hazard to personnel in the area. Wheeled fire extinguishers shall be used where: - ANSWER-High hazard areas present Limited personnel present Wheeled extinguishers must have a: - ANSWER-(a)High agent flow rate (b) Increased agent stream range (c) Increased agent capacity Light Hazard means - ANSWER-Class A combustibles and Class B flammables are low and fires with relatively low rates of heat release are expected. Normal amount of class A there and only ~ 1 gal of class B Hazardous materials identification systems (HMIS) labels, 6-year maintenance labels, hydrostatic test labels, or other labels shall NOT be located or placed on the __________ of the extinguisher. - ANSWER-front Where signs are used to indicate fire extinguisher location, the signs shall comply with the following: - ANSWER-(1) They shall be located in close proximity to the extin- guisher. (2) They shall be visible from the normal path of travel. Fire extinguishers containing only plain water shall be protected to temperatures as low as _____________ by the addition of an ____________ that is stipulated on the fire extin- guisher nameplate. - ANSWER-−40°F, antifreeze Class A and D Fire extinguishers shall be located so that the maxi- mum travel distances shall not exceed _________ - ANSWER-75 ft Maximum floor area for extinguisher on class A hazards - ANSWER-11,250 ft^2 rating for Light and ordinary hazard occupancy for class A hazard - ANSWER-2A rating for extra hazard occupancy for class A hazard - ANSWER-4A What shall be permitted to be used to fulfill the requirements of one 2-A rated extinguisher. - ANSWER-Up to two water-type extinguishers, each with 1A what shall be used for fulfill a 4A rated extinguisher? - ANSWER-Two 2 & 1⁄2 gal water- type extinguishers rating for class B light hazard/ travel distance to them - ANSWER-5B, 10B / 30, 50 rating for class B ordinary hazard/ travel distance to them - ANSWER-10B, 20B / 30, 50 rating class B extra hazard / travel distance to them - ANSWER-40B, 80B / 30, 50 How many AFFFor FFFP can be used for extra hazard class B - ANSWER-up to three at 2.5 gal How many AFFF or FFFP can be used for ordinary hazard class B - ANSWER-Two 1.6 gal when flammable liquids are at appreciable depth, fie extinguishers can't be the sole protection if the area exceeds __________ if personnel are trained to use it then __________ - ANSWER-10 sq ft, 20 sq ft Class B travel distance shall not exceed ___________ - ANSWER-50ft Obstacle, Gravity/Three-Dimensional, and Pressure Fire Hazards travel distance _______ - ANSWER-30 ft Class K hazard travel distance - ANSWER-30 ft loaded stream charge inspection - ANSWER-annual Tags on extinguishers shall have - ANSWER-1: Month and year maintenance was performed 2: Person performing the work 3: Name of agency performing the work Non rechargeable extinguishers don't need 6yr or hydro but they are removed after _____________ years - ANSWER-12 6yr label size - ANSWER-2in x 3.5in conductivity test shall be done on CO2 hose every ________ yr - ANSWER-1 CO2 hose testing label size - ANSWER-1/2 in x 3 in The amount of recharge agent shall be verified by: - ANSWER-weighing Agent in AFFF and FFFP shall be replaced once every _________ years - ANSWER-3 The vapor phase of carbon dioxide shall be not less than __________ carbon dioxide. - ANSWER-99.5% Wet chemical and water mist elements can be reused true or false? - ANSWER-False A regulated source of pressure, set no higher than __________ psi above the operating (service) pressure, shall be used to pressurize fire extinguishers. - ANSWER-25 psi Personnel performing hydrostatic testing shall be certified by an organization with a certification program ac- ceptable to the __________________. - ANSWER-authority having jurisdiction Air or other gases shall not be used as the sole me- dium for pressure testing. True or false? - ANSWER-True All air shall be vented prior to hydrostatic testing, to prevent violent and dangerous failure of the cylinder. True or false? - ANSWER-True Fire extinguishers having aluminum cylinders or shells suspected of being exposed to temperatures in excess of 350°F (177°C) shall be removed from service and subjected to a hy- drostatic test. True or false? - ANSWER-True Test pressure gauges shall be capable of reading ______ percent to ________ percent of the test pressure - ANSWER-90 to 110 Pressure gauges used on test equipment shall be cali- brated at least _________ - ANSWER-semiannually. The temp used for drying hydro equipment shall not exceed _________ degrees inside the shell - ANSWER-150 degrees The equip- ment for hydrostatic testing of high-pressure cylinders and cartridges (DOT 3 series) shall meet the specifications of: - ANSWER-CGA C-1, Methods of Hydrostatic Testing of Compressed Gas Cylinders. A hydrostatic test pump, hand- or power-operated, shall be capable of producing not less than _____________ of the test pressure and shall include appropriate check valves and fittings. - ANSWER-150 percent Dry chemical, stored-pressure, with mild steel shells, brazed brass shells, or aluminum shells Dry chemical, cartridge- or cylinder-operated, with mild steel shells Halogenated agents Dry powder, stored-pressure, cartridge- or cylinder-operated, with mild steel shells need to be inspected how often? - ANSWER-12 yr intervals, everything else is 5yr How often do dry chem with stainless steel shells need to be inspected - ANSWER- every 5 years If, at any time, a fire extinguisher shows evidence of ___________________________ to the extent as to indicate weakness, it shall be condemned or hydrostati- cally retested - ANSWER-dents, mechanical injury, or corrosion The agent in stored-pressure wetting agent fire extinguishers shall be replaced: - ANSWER-annually. some _______ extinguishers can be pressurized with argon - ANSWER-class d AFFF, FFFP, CO2, and dry chemical shall be selected to protect what hazard - ANSWER-class B Only standard industrial-grade ___________ with a maxi- mum dew point of −60°F (−51°C), shall be used to pressurize stored-pressure dry chemical and halogenated- type fire extinguishers that use nitrogen as a propellant. - ANSWER-nitrogen Protection of class ______ hazards shall be selected from either a wet chemical type or dry chemical type - ANSWER-Class K The water content of the liquid phase of CO2 shall not be more than _________ percent by weight - ANSWER-.01 fire extinguishers mounted in cabinets or wall recesses shall be placed so that _________ - ANSWER-The operating instructions face outward Extinguishers protecting class A - ANSWER-(1) Water type (2) Halogenated agent type (For halogenated agent-type fire ex- tinguishers, see 5.3.2.6.) (3) Multipurpose dry chemical type (4) Wet chemical type Extinguishers protecting class B - ANSWER-(1)Aqueous film-forming foam (AFFF) (2) Film-forming fluoroprotein foam (FFFP) (3) Carbon dioxide (4) Dry chemical type (5) Halogenated agent type (For halogenated agent-type fire ex- tinguishers, see 5.3.2.6.) Light hazard occupancies can include - ANSWER-some build- ings or rooms occupied as offices, classrooms, churches, as- sembly halls, guest room areas of hotels or motels, and so forth. Ordinary hazard occupancies could consist of - ANSWER-dining areas, mercantile shops and allied storage, light manufacturing, research operations, auto showrooms, parking garages, work- shop or support service areas of light hazard occupancies, Extra hazard occupancies could consist of - ANSWER-wood- working; vehicle repair; aircraft and boat servicing; cooking areas; individual product display showrooms; product conven- tion center displays; and storage and manufacturing processes such as painting, dipping, and coating, including flammable liquid handling. plain water extinguisher is suitable for class ________ hazards only - ANSWER-A Maintenance and hydro intervals for dry chem and halogenated - ANSWER-6 yrs, 12 yrs Maintenance and hydro intervals for water AFFF, FFFP / CO2 - ANSWER-5 yrs, 5 yrs A 2A rated fire ext has how many gal of water - ANSWER-2.5 gal water Protects ABC Hazards - ANSWER-Multipurpose ammonium phosphate Protects A only hazards - ANSWER-Water, wetting agent, loaded stream Protects A and B only - ANSWER-AFFF FFFP Protects K only - ANSWER-Wet chemical