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Definition
| involves ordinary combustibles such as wood, paper and cloth |
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Definition
| involves flammable and combustible liquids and gases such as gasoline, kerosene and liquefied petroleum gases |
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Definition
| involves energized electrical equipment |
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Definition
| involves combustible metals such as magnesium, sodium, and titanium |
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Definition
| involves cooking devices that contain or use combustible vegetable or animal oils and fats |
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Term
| To be effective, a dry chemical extinguisher must be able to... |
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Definition
| Expend 80% of it's contents |
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Term
| Any extinguisher other than a dry chemical or dry powder must be able to... |
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Definition
| Expend (discharge) 95% of it's contents |
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Term
| Mechanism for a water extinguisher |
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Definition
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Term
| Mechanism for a CO2 extinguisher |
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Definition
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Term
| Mechanism for a dry chemical or dry powder extinguisher |
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Definition
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Term
| Mechanism for a Halon based extinguisher |
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Definition
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Term
| Mechanism for a Met-L-X (dry powder) based extinguisher |
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Definition
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Term
| Name all 4 criteria that extinguishers must meet |
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Definition
- Discharge volume capability
- Discharge duration
- Discharge range
- Hydrostatic testing
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Term
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Definition
- Are from 1-A to 6-A, 10-A, 20-A, 30-A, and 40-A
- Wood crib test
- Wood panel test
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Term
| Ratings of 1-A through 6-A are subject to what test(s)? |
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Definition
| Both the wood crib and wood panel test. |
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Term
| Ratings of 10-A or higher are subject to which test(s)? |
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Definition
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Term
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Definition
- Rated 1-B, 2-B, 5-B, 10-B, 20-B, 30-B, 40-B, up to 640-B
- Example: a 60-B extinguisher should be able to extinguish 60 square feet of flammable liquid fire by a non-expert.
- Expert should be able to extinguish approx. 150 square feet with the same extinguisher rating.
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Term
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Definition
- Not assigned a numerical rating.
- Agents are tested only to determine non-conductivity.
- Example rating: 2-A,10-B:C
- Class C fires involve material from both Class A & B.
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Term
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Definition
- Depending on intended use of the extinguisher, there are six basic fire tests performed.
- Four tests involving magnesium
- Two tests involving sodium and potassium.
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Term
| Name the four magnesium fire tests used to evaluate Class D portable fire extinguishers |
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Definition
- Area fire test
- Pallet transfer fire test
- Premix fire test
- Casting fire test
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Term
| Name the two sodium, potassium fire tests used to evaluate Class D extinguishers |
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Definition
- Spill fire test
- Pan fire test
*Both tests conducted when metals are in liquid state.
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Term
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Definition
- UL Standard 300, Standard for Fire Testing of Fire Extinguishing Systems for Protection of Restaurant Cooking
- Fuel used must be new vegetable shortening or oil with anti-foaming agent
- Auto-ignition temp of 685 degrees Fahrenheit (362.7 Celsius)
- Tests performed on four types of cooking appliances (fryers, ranges, griddles and woks)
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Term
| Class D extinguishers must have what on the label? |
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Definition
| The exact type of metal they are designed to extinguish. |
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Term
| A dry chemical extinguisher can extinguish |
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Definition
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Term
| Class B fires can be extinguished by what type of extinguishing agents? |
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Definition
| CO2, dry chemical and Halon |
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Term
| What is the maximum size that can be considered portable for an extinguisher? |
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Definition
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Term
| Name some of the extinguishing agents used in fire extinguishers |
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Definition
- Water (plain, distilled)
- Anti-freeze
- Alkaline mixtures
- Carbon dioxide
- AFFF
- FFFP
- Halons
- Dry chemical agents
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Term
| Ratings of 20-B or higher are considered for use on |
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Definition
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Term
| Types of Class A portable extinguishers are |
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Definition
- backpack pump tank water
- stored pressure water
- multi-purpose dry chemical
- Halon 1211
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Term
| Types of Class B portable extinguishers are |
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Definition
- AFFF
- Halon 1211
- Halon 1301
- Dry chemical
- CO2
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Term
| Types of Class C portable extinguishers are |
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Definition
- CO2
- Dry chemical
- Halon 1211
- Halon 1301
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Term
| Types of Class D portable extinguishers are |
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Definition
Dry powders such as,
- Met-L-X
- Pyrene G-1
- Lith-x
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Term
| Anti-freeze agents are for operation in temperatures as low as... |
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Definition
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Term
| Alkaline mixtures have been found to be effective against... |
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Definition
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Term
| Name some alkaline mixtures |
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Definition
- potassium acetate
- potassium citrate
- potassium carbonate
(or combinations thereof, in water)
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Term
| Alkaline mixtures are particularly useful for attacking Class K fires... |
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Definition
Because of their soapy foam
(Saponification- occurs as a result of reactions with fats). |
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Term
| Saponification generates... |
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Definition
| a steam (a cooling effect), smothers the fire and prevents re-ignition. |
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Term
| Multipurpose dry chemical extinguishing agents do not produce the saponification effect because... |
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Definition
| The base chemical, ammonium phosphate, is acidic in nature. |
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Term
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Definition
| Gaseous blanket between the fuel and the surround air. |
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Term
| C02 is suitable for both... |
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Definition
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Term
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Definition
- in a liquid state (allowing for more volume)
- at a pressure of about 840 psig (5880 kPa)
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