Ch6 Sprinkler Systems and Standpipe Ops Flashcards
Percentage of fires in sprinkled buildings that are controlled or extinguished by the sprinklers
96%
Number of multiple-death fires (more than 3 killed) in a building having a fully operational wet sprinkler system
0, none…ever
Flow rate of a normal sprinkler head flowing at 50 psi
About 40 gpm
- 50-60 gpm if the pressure is increased to 100 psi
Pressure to which the piping of a new sprinkler system is tested
200 psi
This is a pipe system connected to a source of supply that has water in its piping at all times, right up to each sprinkler head
Automatic wet system
This is a pipe system filled with compressed air with the water being held back by a valve in a heated area.
Automatic dry system
Amount of air pressure needed to hold back the water in an automatic dry system
30-40 psi
Type of valve that that has a much larger surface area on top relative to the bottom
Differential dry-pipe valve
When the water above the clapper valve is so high that its weight will hold the clapper closed, even after a sprinkler has opened and all of the air has bled out
Water columning
A piping system connected to a water source controlled by an automatic valve
Deluge system
An automatic detection system coupled with an automatic dry-pipe system
Preaction system
Rows of pipes with small holes drilled every few inches along the top and sides
Perforated pipe system
The best way to determine whether or not a sprinkler system is present
Fire inspection and preplanning
Gravity tank and pressure tank capacity
2000-5000 gal, depending on the protected hazard
Standpipe system designed primarily for use by fire department personnel
Class 1
