Engine Op's Ch. 10 SPRK System Ops Flashcards
The first line of defense against fire in many occupancies is an automatic sprinkler system. Properly operating sprinkler systems have a success record of better than __%.
Fill in the blank
10.1
96%
There are several types of automatic sprinkler systems found in New York City. Water supplies for automatic sprinkler systems include city main and usually one other source–gravity tank, pressure tank, cistern or suction tank.
WET PIPE: Wet pipe sprinkler systems contain water in the riser and piping at all times. As soon as a sprinkler head activates due to the heat of a fire, water is immediately discharged through the ____ ____.
Fill in the blanks
10.2.1 A
Open Heads
There are several types of automatic sprinkler systems found in New York City. Water supplies for automatic sprinkler systems include city main and usually one other source–gravity tank, pressure tank, cistern or suction tank.
B. DRY PIPE: Dry pipe sprinkler systems contain air (or sometimes nitrogen) in the riser and piping at all times. The air (or nitrogen) is under pressure and this pressure maintains a “differential dry pipe valve” in the closed position. When a sprinkler head activates, the air (or nitrogen) is exhausted through the open head, thus allowing the differential dry pipe valve to open and water to be admitted to the riser and piping. Some dry pipe systems are equipped with quick opening devices (QOD’s) which assist in exhausting the air or nitrogen from the system thus allowing water to reach the open head more quickly. Dry pipe systems are installed where?
10.2.1 B
Dry pipe systems are installed where there is a danger of freezing.
There are several types of automatic sprinkler systems found in New York City. Water supplies for automatic sprinkler systems include city main and usually one other source–gravity tank, pressure tank, cistern or suction tank.
DELUGE: Deluge type sprinkler systems are equipped with a “deluge” valve which opens upon an electrical signal received from a smoke, heat, or infrared (flame) detector. In a deluge system, all sprinkler heads (or nozzles) are open and will flow water simultaneously. Deluge systems are often found in what type of occupancies?
10.2.1 C
Deluge systems are often found in aircraft hangars or where large quantities of flammable liquids are used in industrial processes.
There are several types of automatic sprinkler systems found in New York City. Water supplies for automatic sprinkler systems include city main and usually one other source–gravity tank, pressure tank, cistern or suction tank.
D. PRE-ACTION: A pre-action type of sprinkler system consists of fusible sprinkler heads, dry piping, and a valve which is opened upon an electrical signal from a smoke, heat, or infrared (flame) detector. The idea is that once a fire is detected, the valve opens admitting water to the piping. If manual fire control efforts are unsuccessful, the sprinkler system actuates and will quickly control the fire. By maintaining the piping dry during normal operations, the danger of a large water damage loss due to a break in the piping or accidental damage to a sprinkler head, is avoided. Pre action systems are often found where?
10.2.1 D
Pre-action systems are most often found in computer rooms or where other sensitive electronic equipment is used.
There are several types of automatic sprinkler systems found in New York City. Water supplies for automatic sprinkler systems include city main and usually one other source–gravity tank, pressure tank, cistern or suction tank.
COMBINATION: A combination sprinkler system or combination sprinkler-standpipe consists of sprinkler heads and standpipe hose outlets attached to a common riser. Combination systems may be either “___” or “___.”
Fill in the blanks
10.2.1 E
Wet
Dry
Siamese connections are color coded for ease of identification. Either the caps or the entire siamese connection may be painted. Sprinkler siamese connections are painted what color?
10.3.1
Green.
Sprinkler systems should always be supplied with what size hose?
10.3.2
3 1/2-inch hose.
If a building is equipped with both a standpipe system and automatic sprinklers, the first supply line must be stretched to the standpipe siamese. If the first due engine is supplying both the standpipe and sprinkler systems, the second and third due engine companies must stretch additional lines to augment the Standpipe system.
Tru or false
10.3.3
The second and third due engine companies must stretch additional lines to augment BOTH systems.
If a sprinklered building is not equipped with a standpipe system, The 1st & 2nd lines stretched shall be of what types?
10.3.4
The first line stretched should be a handline (either 1 3/4-inch or 2 1/2 inch, depending upon fire conditions) and the second line used to augment the sprinkler system.
What 2 ways can a Engine Company remedy the outflow of water at a siamese connection with a malfunctioning clapper valve?
10.3.6
A spare 3-inch male cap should be carried by all engine companies in the event it becomes necessary to cap one side of the siamese connection to prevent an outflow of water due to a malfunctioning clapper valve. Immediately stretching and connecting a second 3 1/2-inch line is another potential remedy for this problem.
Supply hose connected to sprinkler systems should be charged when necessary. The engine company officer should order the sprinkler system augmented/supplied upon indication of what?
10.3.9
A working fire (smoke, heat, visible fire, reports from employees or security guards) or based on reconnaissance information from ladder company personnel indicating same. Water flow alarms indicate only that water is flowing, but it may be due to reasons other than a fire–such as broken piping or a dislodged sprinkler head.
Pump discharge pressure for supplying a sprinkler system should start at ___ psi.
Fill in the blank
10.3.10
150
The sprinkler system control valve should only be shut down on orders from the Incident Commander once it is determined that the fire has been what?
10.4.3
Controlled and hoselines are in position.
Sprinkler system control valves may be one of four basic types:
· Outside Stem & Yoke (OS&Y)
· Post Indicator Valve (PIV)
· Wall Indicator Valve (WIV) or Wall Post Indicator Valve (WPIV)
· Butterfly Type Indicating Valve
The Outside Stem & Yoke (sometimes called an Outside Screw & Yoke) and Post Indicator Valve are the most commonly encountered. The OS&Y’s and PIV’s may also be found in standpipe systems for use as what?
10.4.4
Section or zone control valves.
