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22 Cards in this Set
- Front
- Back
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In most cases a hydrocarbon gas fire will cease if the oxygen concentration is less than ____ % |
15% |
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Wood will continue to burn in a flame less glow with oxygen levels as low as _____ % |
5% |
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At oxygen concentrations of about ____% a person's motor coordination is impaired. |
17% |
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At oxygen concentrations of about __________% a person will still be conscious but will fatigue easily and will show impaired judgement. |
10 to 14% |
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At oxygen concentrations of about ____% a person will lose consciousness and will quickly need air or oxygen to revive. |
10% |
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The water pressure at the topmost outlet of each stand pipe should not be less than A. 350 kPa B. 450 kPa C. 690 kPa D. 490 kPa
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450 kPa |
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The pressure at any hose outlet can not exceed A. 450kpa B. 550 kPa C. 590kpa D. 690kpa |
D. 690kpa |
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NPS stands for |
National pipe straight |
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Which association governs the design and installation of sprinkler systems? |
NFPA national fire protection association |
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A process, which causes fires to endure and renew themselves, is A. A reducing agent B. An oxidizing agent C. A flame D. Molecular activity due to high temperature |
D. Molecular activity due to high temperature |
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The maximum air pressure allowed, under normal circumstances, in a dry pipe system is A. 275 kPa B. 225 kPa C. 450 kPa D 150 kPa |
A. 275 kPa |
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Foam extinguishers are recommended for: A) Class “C” and Class “B” fires B) Class “A” and Class “C” fires C) Class “A” and Class “B” fires D) Class “D” fires E) Class “C” and Class “D” fires
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C) Class “A” and Class “B” fires |
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A reducing agent or fuel could be: A) Concentrated sulphuric acid B) Hydrogen peroxide C) Carbon monoxide D) A heavy metal oxide E) Chlorine
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C) Carbon monoxide |
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The best fire extinguisher agent to use on a hydrocarbon fire would be: A) Carbon dioxide B) Water C) Dry chemical D) Dry powder E) AFFF
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E) AFFF |
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Fuels or reducing agents that burn in the flaming mode only are: A) Flammable liquids B) Cokes C) Coals D) Flammable gases E) Flammable liquids and gases
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E) Flammable liquids and gases |
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A Class “A” fire would involve: A) Any dry materials B) Paint or grease C) Wood or coal D) Gasoline or oil E) Electrical equipment
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C) Wood or coal |
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Combustion: A) Is endothermic and can occur in an inert atmosphere B) Is exothermic, self sustaining, and can occur in an inert atmosphere C) Requires the presence of air D) Is always a visible process in that light is given off E) Always requires a source of ignition |
B) Is exothermic, self sustaining, and can occur in an inert atmosphere |
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To extinguish a fire, aqueous film forming foam extinguishing agents act in order to: 1. Seal vapors 2. Cool 3. Remove oxygen 4. Break the chain reaction A) 1, 2, 3 B) 1, 2, 3, 4 C) 1, 2 D) 2, 3 E) 4 |
B) 1, 2, 3, 4 |
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Halon extinguishing agents extinguish a fire by: A) Removing the oxygen supply B) Isolating the fuel by coating C) Cooling below ignition temperature D) Radiation shielding E) Breaking the uninhibited chain reaction |
E) Breaking the uninhibited chain reaction |
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The best portable fire extinguisher to use on a Class “D” fire is the: A) Dry chemical unit B) Dry powder unit C) Halon unit D) Carbon dioxide unit E) Aqueous film forming foam unit |
B) Dry powder unit |
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Foam extinguishers are recommended for: A) Class “D” fires B) Class “C” and Class “B” fires C) Class “A” and Class “B” fires D) Class “A” and Class “C” fires E) Class “C” and Class “D” fires |
C) Class “A” and Class “B” fires |
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A fire can be stopped by: 1. Removing or cutting of the fuel supply 2. Cooling the material below its ignition temperature 3. Removing or cutting of the oxygen supply 4. Installing an effective fire detection system A) 2, 3, 4 B) 3, 4 C) 1, 2, 3 D) 1, 2, 3, 4 E) 1, 2, 4 |
C) 1, 2, 3 |
