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26 Cards in this Set
- Front
- Back
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What are the 4 types of sprinkler systems?
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wet pipe, dry pipe, preaction, deluge
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What is a wet pipe sprinkler system? (advantages)
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Most common quick reaction, system that exists only works well in environments over 40 degrees F
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What is a dry pipe sprinkler system? (advantages/disadvantages)
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Activated by air or nitro, delayed, works well in environments under 40 degrees f
Issue is when you charge a dry system it's more likely to leak out of any open outlets or ports. |
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What is a pre-action sprinkler system?
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closed heads, responds only to initiating device good for communications/computer systems
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What is a deluge system?
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All heads open when valve is opened, perfect for high risk environements
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What is a Class 1 stand pipe? (GPM & use)
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500gpm and only 2 1/2 connection for fire personnel
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What is a Class 2 stand pipe? (GPM & use)
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100gpm, contains 1 1/2 connection for occupants (wet) w/ 50 psi nozzle
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What is a class 3 system?
(GPM & use) |
500gpm has 1/1/2 hose and nozzle but also has 2 1/2 connections for fire personnel and occupants.
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If a system is charged but won't turn off at the PIV? where should you shut it off? and why?
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turn it off at the riser and drain that line because if you turn off the os&y it'll turn off all the water to the building
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What should you pump an FDC at?
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150gpm w/ a minimum of 2 2 1/2 inch hose lines
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What is temperature rating for an ordinary sprinkler head that's not colored?
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135-175 degrees
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What's the normal range of the average sprinkler head?
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15-20ft
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What is the name of the bulb in a sprinkler?
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frangible bulb
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When is an OS&Y valve open?
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when the screw is completely visible
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What is the most common sprinkler head?
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pendant
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What is a frangibile bulb?
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it's a bulb filled with liquid with a little air bubble when it reaches a certain temperature that bubble evaporates into the liquid and the liquid expands.
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What does the color of a sprinkler head indicate?
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the heat/temperature it'll activate at.
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What are out of ground sprinkler system?
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risers
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What should a PIV read?
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open and it should be locked or chained
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What is a type 1 building construction called?
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Fire resistive
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What is a type 2 building construction called?
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Noncombustible
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What does a pendant sprinkler mean?
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Facing down Meaning that the water just flows straight down.... where as with an upright sprinkler it sprays up and is deflected down.
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How much clearance must you have from a sprinkler head?
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18 inches
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What is a type 3 building construction called?
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Ordinary
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What is a type 4 building construction called?
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Heavy timber
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What is a type 5 building construction called?
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Wood Frame
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