Chapter 9 Flashcards
4 main types of sprinkler systems:
Wet Pipe
Dry Pipe
Deluge
Pre-action
According to NFPA statistics, about ___% of fires in sprinklered building are either extinguished by the sprinklers or held in check until they can be completely extinguished by the FD.
96%
The ___ is an indicating valve; at a. glance a FF can tell if it is open or closed. Typically is located just under the sprinkler alarm valve.
Main valve
3 types of control valves:
Outside screw and yoke
Post indicator valve
Wall post indicator
___: Threaded stem is showing(___) not showing(___) and is the most common main water control valve.
Outside screw and yoke
Open
Shut
___: Stem is inside a post; a window shower whether ___ or ___.
Post indicator valve
Open or shut
___: Generally the same as post indicator valve but protrudes from the wall.
Wall post indicator
___ valves are for both system drainage and alarm silencing.
Stopcock valves
___ valves are used for system drainage and as test valves.
Global valves
The ___ valve is used to simulate actuation of the sprinkler system to ensure it is working properly.
Test/inspector valve
The ___ can also be used to test the system, much like the alarm test/inspector valve.
Main drain
The water flow alarm is either ___ or ___.
Electronic or Hydraulic
Water flow alarm… In hydraulic alarms water actually drives the ___, it is a local alarm that alerts building personnel.
Alarm gong
Water flow alarm… In electronic alarms the water presses against a diaphragm that activates the alarm. Can be a ___ alarm, or it can be connected to a ___ that can notify the fire department when the alarm is activated.
Local alarm
monitoring company
Water supply for sprinklers must be ___, ___, and of adequate ___.
Reliable
Automatic
Volume and pressure
The flow must be able to provide a minimal residual water press use of ___ psi tote highest and farthest sprinkler head.
15 psi
An indication that a fire pump is present is a ___; which looks like a wall hydrant that has multiple ___ inch outlets; the number of outlets is determined by the ___ for the occupancy.
Test Header
2.5”
Required flow
On sprinklers with a single riser, the FDC is connected to the ___ side of the system.
Sprinkler side
On a multiple riser system, the FDC is connected to the ___ side of the system.
Supply side
On a multiple riser system, the FDC is connected to the supply side of the system, thus the flow can be controlled by shutting down the ___ valve.
Main water control valve.
Because dry pipe systems take longer to deliver water, many have ___ or ___ to speed up the process.
Accelerators or exhausters
___: Like a dry pipe but additional alarm equipment must be activated before the pipes will with water; then a sprinkler head must still be activated to flow water.
Pre action sprinkler system
Sprinkler system used in areas where water damage must be avoided.
Pre action system
___: like pre action, has separate additional equipment. Typically used in locations where the occupancy is extra hazardous.
Deluge system
These sprinkler systems comply with NFPA 13D.
Residential systems
___ systems do not require a FDC; if there is one present, it will likely be a single ___ inch outlet.
Residential systems
2.5” outlet
If the FDC is used on a residential sprinkler system, it is imperative that the system be pumped at whatever the ___ pressure is.
Standard domestic
Standpipes… Class ___: For use by FD and those trained in handling heavy fire streams.
Class I
Standpipes… Class ___: For use primarily by building occupants.
Class II
Standpipes… Class__: For us by FD or building occupants; FF’s should always use their own hose.
Class III
Class I standpipe must have a water supply adequate to flow ___ gpm for ___ minutes.
500 gpm
30 minutes
Class I standpipe must have a minimum residual pressure of ___ psi at the highest/farthest outlet while flowing ___ gpm.
65 psi
500 gpm
Class I standpipe, if more than one riser; system is still required to flow 500 gpm for 30 minutes for the first standpipe and each additional standpipe must flow a minimum of ___ gpm for at least ___ minutes.
250 gpm
30 minutes
Class II standpipe must flow ___ gpm for at least ___ minutes.
100 gpm
30 minutes
Class II standpipe must must provide a minimum residual pressure of ___ psi at the highest/farthest outlet while flowing a minimum of ___ gpm.
65 psi
100 gpm
Class III standpipe must be capable of flowing the same required minimums of a Class ___ system.
Class I
Standpipes… FF’s must be aware of ___; specifically in Class III devices.
Pressure reducing devices
Any standpipe system that has flow pressures of ___ psi or more should be tagged or marked to indicate the higher pressure.
150 psi
Standpipe systems can be either wet or dry and ar broken down into ___ types. They are…
4 types
Wet Standpipe
Dry Standpipe
Dry standpipe that is under air pressure
Dry standpipe with no water supply
NFPA ___ cover the installation, maintenance, and minimum requirements of standpipe systems.
NFPA 14
NFPA 14 mandates that the standpipe systems be limited to ___ feet. When a structure is higher than that, additional zone/zones must be installed; however, no two zones are allowed to exceed the height of ___ feet.
275 feet
550 feet
Standpipe FDC’s must be of the ___ type; some municipalities have mandated the connection be of the ___ inch storz type.
Female type
5” storz
FDC color coding: Red - Green - Silver - Yellow -
Standpipe
Automatic sprinkler
Non automatic sprinkler
Combination sprinkler/standpipe
___ and ___ types are usually found in computer rooms, spray booths, areas of intricate electrical equipment, or areas of flammable liquid storage.
CO² and Halogenated
___ works by diluting the air in the room to displace oxygen.
CO²
___ work by interfering with and interrupting the chemical chain reaction of fire.
Halogenated agents
___: Halogenated hydrocarbons in a chemical compound that contains carbon and one or more of the elements from the halogen series(booming, chlorine, fluorine, and iodine).
Halon
Main hazard of halon is ___.
Toxicity
Main hazards of ___ are limited visibility and respiratory irritation; considered non toxic.
Dry chemical
___: Extra ability of cooling and removing the fuel by coating it.
Wet chemical or Class K
Newer agents called ___ are evolving and as the name suggests they do not leave a residue.
Clean agents
Clean agents… The actual agent may be ___ or ___.
FE-36 or Centrimax ABC 40
Clean agents are effective for Class ___ fires and are considered ___, ___, and ___ safe.
A, B, and C
nontoxic, nonconductive, and ecologically safe
Each type of built in fire protections system, when activated, require ___.
FD support
NFPA ___: Recommended practice for FD operations In properties protected by sprinkler and standpipe systems.
NFPA 13E
NFPA 13E states you should initially develop and maintain a PDP of ___ psi.
150 psi
NFPA 13E states that a minimum of two ___ inch hose lines supply the sprinkler or standpipe systems.
2.5”
In general, a high-rise kit should be capable of flowing at least ___ gpm.
250 gpm
High-rise kit should contain at least the following:
Minimum of 100ft of 1 3/4" or 2" hose Water thief or gated wye Spanner wrenches Pipe Wrench Hand wheel Nozzle Door wedges Typical hand tools and carried equipment such as hand lights and forcible entry tools
The standpipe connection should always be made ___ and the hose flaked out within the stairwell.
Floor below the fire
