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FIRE FIGHTING FINAL EXAMINATION REVIEW Covers: Class of Fire Shipboard signals Extinguishing agents Fixed System – Need to know how much CO 2 is needed for a space CFR questions Flammable v. Combustible Flash Point, Fire Point, Ignition Temperature Dry Chemicals Foam Most recent material NO Case studies NO HAZMAT Ship’s Signals (Chapter 13 pg. 265) Fire and Emergency – Continuous blast of the ship’s whistle and general alarm bells for a period of AT LEAST 10 SECONDS Abandon Ship – MORE THAN 6 SHORT BLASTS AND 1 LONG BLAST on the whistle and same signal on the general alarm bells. Man Overboard – Hail, and pass the word, “MAN OVERBOARD” to the bridge. Dismissal from Fire and Emergency Stations – 3 short blasts on the whistle and 3 short rings of the general alarm bells. Life Boats: 1) Lower Boats – 1 short blast of whistle 2) Stop Lowering Boats – 2 short blasts on whistle 3) Dismissal from Stations – 3 short blasts on whistle NFPA recommends that a vessel in port and not under way sound five prolonged blasts on the whistle or siren to alert other ships and shore facilities. 1. The signal to stop lowering the boats is – 2 blasts on the whistle Classification of Fires (Chapter 5 pg. 81) Fire Classification is based upon what fuels a fire, and what the most effective extinguishing agent is. CLASS A FIRES – Fires involving common combustibles including: wood,
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wood-based materials, cloth, rubber, plastic, - Water and water based solutions are the best extinguishing agents CLASS B FIRES – Fires involving flammable or combustible liquids, gasses, greases, and similar products. - Denying the fire Oxygen, there by shutting down the fire tetrahedron is the best way to extinguish this class. Examples include: Foam, CO 2 Extinguishers, the fixed system Five Grades of Flammable Liquids Grade A – 14.5 – 40 (RVP) Heptane Grade B – 8.5 – 14 (RVP) Grade C – Anything less than 8.5 (RVP) Grades A-C are considered Flammable (see below) Grade D – 80 o -150 o F (RVP) Diesel Fuel Grade E – Above 150 o F (RVP) Asphalt Grades D-E are considered Combustible (see below) Flammable – Any substance that has a flash point less than 80 degrees Fahrenheit Combustible – Any substance that has a Flash point above 80 deg. F CLASS C FIRES – Fires that involve any ENERGIZED electrical equipment - Dry Chemical is best used, CO 2 or HALON CLASS D FIRES – Fires that involve combustible metals - Dry POWDERS are best utilized, SAND, GRAPHITE, not 1 single method works for every Class D fire, though. Extinguishing Agents (Chapter 7 pg. 121) WATER – 8.5 pounds/gallon Straight Streams – Solid Tube of water – oldest method - Used as the primary attack at the seat of a fire - Must “bounce” stream off bulkheads to reach fire - Can be used to provide ventilation - Master stream – 300 Gallons/min Low Velocity Fog – Used for the protection of Fire Fighters - Delivered through a Low Velocity Fog Applicator and a Navy Standard Fog Nozzle.
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