Ch. 13 special agent extinguishing systems Flashcards
On page 566 of Fire Inspection and Code Enforcement, the two application methods for dry chemical extinguishment systems are ____ systems and ____ hose-line.
fixed systems
handheld hose-line
On page 566 of Fire Inspection and Code Enforcement, there are two main types of fixed systems:
local application (most common type)
Total flooding
On page 567 of Fire Inspection and Code Enforcement, the 3 most common dry chemical extinguishing agents are:
Sodium Bicarbonate
Potassium Bicarbonate (purple K)
Monoammonium phosphate
On page 568 of Fire Inspection and Code Enforcement, storage container for agent and expellant gas must be in an area that maintains a temperature range of _ to _ degrees Fahrenheit.
-40 - 120 degrees Fahrenheit
On page 569 of Fire Inspection and Code Enforcement, ______ are designed to extinguish Class D fires.
Dry powders
On page 570 of Fire Inspection and Code Enforcement, ______ is listed by UL for use on burning materials at fuel temperatures up to 1400 degrees Fahrenheit.
NA-X
On page 571 of Fire Inspection and Code Enforcement, a _____ system is most effective on fires in commercial cooking equipment that produce grease-laden vapors.
wet chemical system
On page 572 of Fire Inspection and Code Enforcement, ______ fire extinguishers are effective on Class A,B, and C fires, will not conduct electricity and will not leave any residue.
Clean agents
On page 573 of Fire Inspection and Code Enforcement, two types of Halon agents are still in use:
Halon 1211 (portable fire extinguishers)
Halon 1301 (total flooding system)
On page 573 of Fire Inspection and Code Enforcement, Halon materials may be recycled. Recycling reduces the material’s volume by approximately ____ % each time it is recycle.
10%
On page 575 of Fire Inspection and Code Enforcement, total flooding systems are designed to deliver at least __% concentration of CO2 into an enclosed area.
34%
On page 577 of Fire Inspection and Code Enforcement, the three means of actuation of CO2 systems are:
Automatic operation
Normal manual operation
Emergency manual operation
On page 577 of Fire Inspection and Code Enforcement, in a high pressure CO2 system, CO2 is stored in standard DOT approved cylinders at a pressure of about ____ psi.
850 psi
On page 577 of Fire Inspection and Code Enforcement, in a low pressure CO2 system, the liquified CO2 is stored in large, refrigerated tanks at ___ psi at a temperature of ___ degrees Fahrenheit.
300 psi
0 degrees Fahrenheit.
On page 578 of Fire Inspection and Code Enforcement, foam extinguishes a fire by one or more methods including the following:
Smothering
Separating
Cooling
Suppressing
On page 579 of Fire Inspection and Code Enforcement, there are four types of foam fire extinguishing systems:
Fixed
Semifixed
Mobile
Portable
On page 579 of Fire Inspection and Code Enforcement, Foam concentrate - Raw foam liquid before the introduction of water and air; usually shipped in ___ gallon or ____ gallon drums.
5 gallons - 55 gallons
On page 579 of Fire Inspection and Code Enforcement, homogeneous mixture of foam concentrate and water before the introduction of air is called what?
Foam solution
On page 580 of Fire Inspection and Code Enforcement, four elements are necessary to produce high-quality firefighting foam:
Foam concentrate
Water
Air
Mechanical Agitation
On page 580 of Fire Inspection and Code Enforcement, two stages in the formation of foam:
Proportioning
Aeration
On page 580 of Fire Inspection and Code Enforcement, foam designed for hydrocarbon fires are used at ____ to ____ percent concentrations.
1 - 6%
On page 580 of Fire Inspection and Code Enforcement, polar solvent fuels require ____ or ____ percent concentrates.
3 or 6%
On page 580 of Fire Inspection and Code Enforcement, medium and high expansion foams typically use ___%, ___%, ___%, or ___% concentrations.
1%, 1 1/2%, 2% or 3% concentrations
On page 581 of Fire Inspection and Code Enforcement, ______ expansion rate of foam has a small/air solution ratio, generally in the area of 7:1 to 20:1.
Low
