Chapter 10: Fire Protection Systems
FFs should be assigned to check where?
Above the fire floor, with hoselines if possible but without them if necessary.
A what system should be in place at every incident?
Accountability
Manual systems do not have what in regards to water supply?
Enough water for FF usage.
In a preaction system, _____ are activated by a supplemental fire detection system. These are located at the dry pipe valve and open to let air escape from the system before the sprinkler head activates.
Exhausters
Pumpers should be hooked into sprinkler systems of what buildings in addition to the fire building?
Exposure
When the FDC siamese connection is damaged but one female adapter still works, you should?
Hook a FD siamese onto the good side
When commencing fire attack up the stairway, FFs should check all the?
Hose outlet valves are closed
In a dry pipe system, the piping holds pressurized air. The dry pipe valve keeps the water out of the system via a?
Pressure differential principle. The surface area of the dry side is greater than the wet side.
Automatic dry systems have piping that is _____ and water is admitted from a ______ valve
Pressurized, Dry pipe
What are the 5 types of standpipes?
Automatic Wet Automatic Dry Semiautomatic Dry Manual Dry Manual Wet
Where are deluge systems normally installed?
High hazard locations such as aircraft hangers, chemical plants, laboratories, transformer rooms
FDCs are required on which classes of standpipes?
I and III
The one deterrent to effective sprinkler system operation, other than human error, is?
Inadequate water supply
Newer fire codes require that multiple riser dry systems be what in regarded to water supply?
Interconnected
What are the water supply requirements for Class I and III systems?
A residual pressure of 100 psi at the outlet of the top most hose connection on each standpipe. This pressure must be available while flowing 250 gpm from each of the two topmost hose connections of the hydraulically most remote standpipe, plus 250 gpm from each additional standpipe, up to the required maximum
Modern fire codes require a fire service control in each car as well as in the ______
lobby
Excess hose should be flaked out where?
Up the stairwell
How close should the pumper be positioned to the FDC?
100 ft
What are the water supply requirements for a class II system?
100 gpm for 30 minutes. Must also be strong enough to maintain a residual pressure of 65 psi at the outlet for the hydraulically most remote hose connection with 100 gpm flowing.
As long as enough pressure is available, each head will distribute water over an area of _____ or more in volume sufficient to control or extinguish most fires.
100 square feet
Gravity tank systems are alternative water supply sources. They may hold as much as _______ gallons of water
100,000
The first hoseline into the building should be how long?
150 ft
Recommended pumping pressure into a sprinkler system?
150 psi
When the location of the fire is difficult to judge, FFs can expect to be ordered off the elevator ____ to ____ floors below the suspected fire floor.
2 to 4
Pressure tanks are found on smaller systems, where they supply house lines for initial attack by occupants. They rarely exceed ______ gallons of water and can be located ______ in the system. The ______ of the tank contains air pressure.
3000 gallons, anywhere, top third
The first standpipe laws in major cities required standpipes in all buildings more than how high?
75 ft because aerials at the time maxed out at that height
If 1.75 hose lines are to be used, you should connect what to the standpipe connection?
A 2.5 section with a wye. This allows two 1.75 lines to be hooked up
All assignments given to FFs should be in a team of?
At least 2 FFs
If at all possible, property conservation should be started when?
During extinguishment
What are the three classes of standpipes and what are the differences?
Class 1 is FD use only (2.5 inch fittings) Class 2 is civilian use (1.5 fittings) Class 3 is both (both size fittings)
Elevators should not be used for fires where?
On floors lower than the fire floor
Automatic and semiautomatic standpipe systems require a minimum of one preconnected water supply that is capable of supplying the system for the minimum required duration. What else is required?
One or more FDCs with a reliable water source accessible nearby
In a system with multiple wet standpipes....When the risers are separate there is _____ fire department intake for each riser. When they are interconnected, they system must have _____ or more intakes.
One, Two
Where are postindicator valves and outside stem and yoke valves commonly found?
Postindicator valves are usually found in industrial, warehouse OSY are usually installed in apartment buildings, offices, stores
Common mistake when using automatic sprinkler systems?
Shutting them down prematurely
Where it is known that large open areas are involved in fire, _____ nozzles should be used, and ______ should be taken into the building.
Solid stream, master stream appliances
What hose connection should you use to start advancing hose lines?
The connection below the fire floor
During a fire, a firefighter should be assigned to what two areas?
The fire pump and the main valve
When hooking into a siamese FDC connection, which side should you start with?
The left
When two or more sources feed a wet standpipe system, which source provides the water?
The one with the higher pressure
In a semiautomatic dry system the air may or may not be pressurized. What is the other difference besides this?
The system relies on a remote actuation device, such as a pull station, to admit water into the piping.
For high rise buildings, how many remotely located FDCs are required for each zone within the pumping range of fire apparatus?
Two or more
Industrial or warehouses may require additional?
Water sources
What is the simplest and most common sprinkler type?
Wet Pipe
What are the four types of water sprinkler systems
Wet Pipe Dry Pipe Preaction Deluge
What are two popular types of postindicator valves?
Window type and butterfly type.
