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IACE Ch3
Combustion and fire growth
33
Other
Professional
08/18/2011

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Cards

Term
What are the five sources of heat energy
Definition
Chemical, Electrical, Mechanical, Nuclear and Solar.
Term
What are the four types of chemical heating.
Definition
1. Heat of Combustion
2. Spontaneous Heating
3. Heat of Decomposition
4. Heat of Solution
Term
What are the four types of electrical heating?
Definition
1. Resistance Heating
2. Dielectric Heating
3. Leakage Current Heating
4. Heat from Arcing
Term
What is Dielectric heating?
Definition
Results from current pulsating at high frequency. Used in Microwave ovens.
Term
What is resistance heating?
Definition
Heat produced as a result of passing current through a conductor such as a wire.
Term
What are the two ways mechanical heat is produced?
Definition
Friction and compression.
Term
What is a fuel?
Definition
Any solid liquid or gas that can combined with oxygen in the chemical chain reaction known as oxidation.
Term
What is Radiative Feedback?
Definition
Radiant heat providing energy for continued vaporization.
Term
The earliest phase of a fire beginning with ignition.
Definition
Incipient Phase
Term
Superheated gasses accumulate at the ceiling and are pushed under pressure away from the fire to uninvolved areas where the combine with oxygen and ignite rapidly developing a fire front.
Definition
Rollover.
Term
Stage of fire where sufficient fuel and oxygen are available for fire growth and open burning.
Definition
Steady state burning phase.
Term
Condition where all the rooms contents are heated to their ignition temperatures and simultaneous ignition occurs.
Definition
Flashover.
Term
What are the four ways that interior finish contributes to the fire impact?
Definition
1. It affects the rate of fire buildup to a flashover condition.

2. It may contribute to fire extension through flamespread over its surface.

3. It may add to the intensity of a fire by contributing additional fuel.

4. It produce smoke and toxic gasses that can contribute to life hazard and property damage.
Term
What is the most widely used test for determining surface burning characteristics?
Definition
Steiner Tunnel Test. ASTM E84
Term
The numerical value that results from the Steiner Tunnel Test?
Definition
Flame spread rating.
Term
What are the control materials used in the Steiner Tunnel Test?
Definition
1. Asbestos Cement Board (0 Rating)

2. Red Oak Wood (100 Rating)
Term
Other than flame spread what are the two other ratings provided by the Steiner Tunnel Test?
Definition
1. Fuel Contributed

2.Smoke Developed
Term
How is "Smoke Contributed" measured in the Steiner Tunnel?
Definition
By passing a beam of light through the exhaust at the end of the tunnel.
Term
The maximum heat that can be produced if all combustible materials in a given area burn.
Definition
Fire Load
Term
How is fire load calculated?
Definition
It is the product of the weight of each combustible material multiplied by its heat of combustion.
Term
What is used to calculate the fire load in a "Normal" building?
Definition
1. Structural Components
2. Interior Finish
3. Floor Finish
4. Combustible Contents
Term
According to the National Bureau of Standards (NBS) What are the characteristics of an occupancy with a Slight: Typical Fire Load 5 PSF.
Definition
1. Well arranged office, metal furniture, non combustible building.

2. Welding areas containing few combustibles.

3. Non combustible Power House

4. A Non combustible building with a small amount of combustible materials
Term
According to the National Bureau of Standards (NBS) What are the characteristics of an occupancy with a Moderate: Typical Fire Load 10 PSF.
Definition
1. Cotton and Waste Paper storage (bsled) in well arranged noncombustible building.

2. Paper manufacturing, noncombustible building.

3. Noncombustible institutional building with combustible occupancy.
Term
According to the National Bureau of Standards (NBS) What are the characteristics of an occupancy with a Moderately Severe: Typical Fire Load 15 PSF.
Definition
1. Well arranged combustible storage in a noncombustible building

2. Machine shops with noncombustible floors.
Term
According to the National Bureau of Standards (NBS) What are the characteristics of an occupancy with a Severe: Typical Fire Load 15 to 20 PSF.
Definition
1. Manufacturing areas with combustible products in a non combustible building

2. Congested combustible storage areas in a non combustible building.
Term
According to the National Bureau of Standards (NBS) What are the characteristics of an occupancy with a Very Severe: Typical Fire Load greater than 20 PSF.
Definition
1. Flammable Liquids
2. Woodworking areas
3. Office with combustible furniture in a combustible building
4. Paper working and printing operations
5. Furniture manufacturing
6. Machine Shop with combustible floors
Term
Some of the earliest Fire Codes in the United States involved what?
Definition
Roof coverings.
Term
What five tests are performed on roof decks?
Definition
1. Intermittent flame exposure test
2. Flame spread test
3. Burning brand test
4. Flying brand test
5. Rain test
Term
What factors are observed in the Intermittent Flame Exposure Test?
Definition
1. If sustained flaming occurs on the underside of the roof deck.

2. Whether flaming or glowing brands are produced.

3. If portions of the test sample are produce.

4. Whether portions of the roof deck are exposed and fall away.
Term
What are the time parameters for the roof flame spread test?
Definition
10 minutes for Class A and B roofs and 4 minutes for Class C.
Term
What is criteria are observed in the roof flame spread test?
Definition
1. Distance to which the flame spreads
2. Whether flaming or glowing brands are produced.
3. If portions of the test sample are displaced.
Term
What criteria are observed in the Burning Brand test?
Definition
1. If sustained flaming occurs on the underside of the roof deck.

2. Whether flaming or glowing brands are produced.

3. If portions of the test sample are produce.

4. Whether portions of the roof deck are exposed and fall away.
Term
In the burning brand test how long is the brand applied to a Class C roof assembly?
Definition
1 to 2 minute intervals until the brand is completely consumed.
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