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2017 FireFighting S&T (Blue book) > Ch.9 > Flashcards

Ch.9 Flashcards

1
Q

4 main types of sprinkler systems:

A
  1. Wet pipe systems
  2. Dry pipe systems
  3. Deluge systems
  4. Preaction systems
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2
Q

According to NFPA, about ____ % of fires in sprinkled buildings are either extinguished by sprinklers or held in check until FD.

A

96%

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3
Q

Valve that controls the flow of water from the domestic water supply system and/or on-site fire pumps:

A

Main control valve

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4
Q

The main control valve is an ____________

A

indicating valve

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5
Q
  • Should always be chained or locked open

- Located under the sprinkler alarm valve.

A

Main control valave

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6
Q

Most common type of main water control valve:

A

Outside screw and yoke (OS&Y)

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7
Q

Outside Screw and Yoke Valve:

A
  • stem is visibly outside of the valve, valve is open

- stem is not visible, valve is closed

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8
Q
  • Valve has no visible stem, it is inside post
  • has window with movable target with words OPEN and SHUT
  • Operating handle is attached and secured on the side of the post
A

Post Indicator Valve (PIV)

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9
Q

The Post Indicator Valve has words ______ and _____

A

OPEN and SHUT

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10
Q

This valve protrudes horizontally from a structures wall

A

Wall post indicator valve (WPIV)

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11
Q

Stopcock Valves are for both _______ and ________

A
  • system drainage

- alarm silencing

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12
Q

Globe Valves are used for ________ and _________

A
  • system drainage
  • test valves
  • manually operated
  • Non-indicating type
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13
Q

_______ and ______ ensure the water can flow in only one direction.

A

Check valve or clapper valve

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14
Q

_________ are used to drain the sprinkler system automatically once the pressure on the system has been relieved.

A

Automatic drain valve

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15
Q

___________ is used to simulate actuation of the sprinkler system to ensure it is working properly.

A

Alarm Test Valve or Inspector Test Valve

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16
Q
  • Common in ALL sprinkler systems
  • This drain piping and valve combination is used to drain the system to replace heads
  • To conduct system repairs
  • To test the system
A

Main Drain

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17
Q

The water flow alarm indicates water flow and is activated either ______ or ________

A

hydraulically or electronically

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18
Q

Water movement within the system drives the alarm water gong in a __________

A

hydraulic alarm

*Local alarm used to alert building personnel of passerby of water flow in the buildings system

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19
Q

When water movement presses against a diaphragm that activates a switch to operate the alarm

A

Electronic Alarm

*can be local or connected to a monitoring company

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20
Q

Every sprinkler system must have a water supply that is ________, _______, and ________

A
  • Reliable
  • Automatic
  • Of adequate volume and pressure
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21
Q

Every sprinkler system must be able to provide a minimal residual pressure of ____ psi to the HIGHEST and FARTHEST sprinkler head.

A

15 psi

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22
Q

The water supply for sprinkler systems can be provided from the ________, _________, or _________

A
  • Domestic water supply
  • Gravity tanks
  • pressure tanks
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23
Q

An indication that a fire pump is present is a __________, which looks like a wall hydrant with multiple 2 1/2” outlets that are used for testing the fire pump.

A

Test Heaader

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24
Q

The number of outlets on a Test Header is determined by _____________

A

Required flow for occupancy

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25
Q

The fire department should connect an engine to the FDC to:

A
  • supplement the system
  • serve as an auxiliary water source
  • Increase the water pressure or volume of sprinkler system
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26
Q

When the FD connects to the FDC, it must make sure to pull its water supply from:

A

a different source than the one supplying the sprinkler system so as not to take water away from activated system.

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27
Q

On sprinkler systems with a single riser:

A
  • FDC connected to sprinkler side of system
  • If main water control valve were closed, only way to stop flow of sprinkler would be to shut down lines from engine supplying system
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28
Q

On systems with multiple risers:

A
  • FDC connected to supply side of system

- Flow can be controlled by shutting down main water control valve

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29
Q

________ in the piping ensures that through the FDC the domestic supply cannot be contaminated or back-pressured and no harm caused to gravity or pressure tanks.

A

Check valves

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30
Q

FDC has _______ that allow the system to be supplied with only one line from an engine.

A

Clapper valve

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31
Q

With clapper valves, water back flowing out of second FDC is prevented and ________________

A

second line can be added later in operation

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32
Q

The FDC for sprinkler systems should be marked. There must be some type of sign, letters stamped into connection, or other visual indicator that the connection is from the sprinkler system, and if ________________

A

the system is broken into more than one zone, and which zone it supplies

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33
Q
  • Sprinkler system constantly has water throughout the system
  • Water in system is kept under pressure so that when sprinkler head activates, water immediately begins to flow from head, thus activating the water flow alarm.
A

Wet Pipe Sprinkler Systems

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34
Q

A dry pipe sprinkler system has no water in the system beyond the __________

A

check valve

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35
Q

System has no water in the system beyond the check valve. The system replaces water with air that is under pressure to keep water from entering the system until a sprinkler head is activated:

A

Dry Pipe Sprinkler System

36
Q

_________ are typically used in buildings wi which the water in the piping could freeze sue to insufficient heating capabilities or exposure of some piping to outside elements.

A

Dry Pipe Sprinkler systems

37
Q

In this system, once head is activated, air begins to flow out of the open head, which in turn reduces the air pressure holding the water back, allowing water to enter the system

A

Dry Pipe Sprinkler System

38
Q

Many dry pipe systems utilize ________ or _______ to speed up the process.

A
  • Accelerators

- Exhausters

39
Q

_________ system is basically set up the same as a dry pipe system but incorporates separate additional alarm equipment.

A

A Preaction Sprinkler System

40
Q

________ are typically used in locations where water damage must be prevented.

A

Preaction Sprinkler System

41
Q

Piping is dry and fills once separate additional alarm detection equipment is activated. After system fills with water, sprinkler head still needs heat to activate. Once water begins to to flow, an alarm is activated and sounds to provide warning prior to activation of sprinkler head:

A

Preaction System

42
Q

Both ______ and _____ sprinkler systems are similar to dry pipe systems but incorporate separate additional alarm equipment.

A
  • Preaction

- Deluge

43
Q
  • Same as dry pipe system
  • Used in locations where occupancy is extra hazardous
  • Heads are ALL open
  • Water discharges from all open heads at once
A

Deluge Sprinkler System

44
Q

Standard for the Installation of Sprinkler Systems in One or Two Family Dwellings and Manufactured Homes

A

NFPA 13D

45
Q

________ are not required to have an FDC for the fire department use.

A

Residential Systems

46
Q

For a residential system it is imperative that the system be pumped at ______________

A

Whatever the standard domestic pressure is

*System piping is made of copper or PVC

47
Q

_______ connections are basically an extension of the discharge outlet of a fire engine.

A

Standpipe

48
Q

Standpipe Systems are divided into 3 classes:

A

Class I - For use by Fire Departments and those trained in handling heavy fire streams
Class II - For use by building occupants
Class III - For use by Fire Department and those trained in heavy hose streams, or by building occupant

49
Q

______ system must have a water supply adequate to flow 500 gpm for at least 30 min.

A

Class I

50
Q

Class I standpipe system must provide a minimum residual pressure of ____ psi at highest/farthest outlet while flowing required 500 GPM.

A

65 psi

51
Q

Class I standpipe systems that require more than 1 standpipe riser, the system is still required to flow 500 GPM for at least 30 min for the first standpipe in the system, and each additional standpipe must follow a minimum of ____ GPM for at least ____ min.

A
  • 250 GPM

- 30 min

52
Q

Class I systems would be required during _____ stages

Class II systems used by occupants trying to control fire in ____ stage

A
  • advanced stages

- incipient stages

53
Q

Class II systems must have a water supply adequate to flow _____ GPM for at least 30 min.
-Minimum residual must be ____ at highest/farthest

A
  • 100 gpm

- 65 psi while flowing 100 GPM

54
Q

The Class III system must be capable of flowing ________________

A

same required minimums as Class I system

55
Q

Occupancies are removing hose from Class II and Class III systems and replacing it with the appropriate standard _______

A

fire extinguisher

56
Q

Specifically in Class III systems __________ can be found.

A

pressure-reducing devices

57
Q

Pressure Reducing devices:

A
  • resemble a washer
  • some manual control valves
  • manual valve has pin or collar that restrict operation
58
Q

Any standpipe systems that have flow pressures of ____ psi or more should be tagged or marked.

A

150 psi

59
Q

Standpipe systems can be either wet or dry systems and are broken down into _____ types.

A

4

60
Q

Wet standpipe system:

A
  • water throughout system at all times

- When outlet opened, water immediately flows

61
Q

Dry standpipe system under no air pressure:

A
  • under no air pressure
  • must be activated by manual operation of a valve at beginning of system by remote control located at each standpipe outlet
62
Q

Dry standpipe system filled with air under pressure:

A

-When standpipe connection is opened, air is allowed to escape the system while water enters

63
Q

Dry standpipe system that has no water supply:

A

Water must be supplied by the fire department.

64
Q

The installation, maintenance, and minimum requirements of standpipe systems are covered within ________

A

NFPA 14

65
Q

NFPA 14 mandates that standpipe systems be limited to a maximum height of _______ ft

A

275 ft

66
Q

When a structure is higher than 275 ft, an additional zone or zones must be installed, however no 2 zones are allowed to exceed a height of ______

A

550 ft

67
Q

________ standpipe systems also have an FDC so the fire department can support the system.

A

Class I and Class III

68
Q

The FDC must be of the ______ type.

A

Female

*although many have mandated 5-inch stortz

69
Q

The FDC must be designated as a standpipe FDC by the use of stamped letters on the connection itself or by _____________

A

some type of metal plate or disc that says the word standpipe

70
Q

Fire department connections should be clearly marked _______ or _______

A

standpipe or sprinkler

*some mandate color coded

71
Q 
Fire Department Connection Color Coding
Red:
Green:
Silver:
Yellow:
A

Red: Standpipe system
Green: Automatic Sprinkler System
Silver: Non-automatic sprinkler system
Yellow: Combination sprinkler and standpipe system

72
Q

Specialized Extinguishing Systems usually activate and exhaust their respective agent _____ to the arrival of FD

A

prior

73
Q

_______ and _______ agent types of extinguishing agents are typically found in computer rooms, spray booths, areas of intricate electrical equipment, or flammable liquid storage.

A
  • Carbon dioxide
  • Halogenated
  • Useful to extinguish without causing water damage
74
Q

Carbon Dioxide system:

A
  • works by diluting air in room to displace oxygen
  • potential for fire to flashback to life
  • Not very effective at extinguishing smoldering fire
  • Main hazard to FF is it DILUTES OXYGEN
75
Q

____________ works by interfering with and interrupting the chemical chain reaction of fire.

A

Halogenated extinguishing agents

76
Q

Halon (Halogenated agent):

A
  • contains carbon and (bromine, chlorine, fluorine, iodine)
  • Used in very low concentrations
  • Main hazard associated is potential for TOXICITY
  • *and oxygen displacement
77
Q

Dry Chemical Systems:

A
  • used for flammable liquid/gas, grease, electrical equip.
  • Commercial kitchens, cooktops
  • Interrupt chemical chain reaction
  • leaves powdery residue
  • Main hazard is LIMITED VISIBILITY and RESPIRATORY IRRITATION
78
Q

The Wet Chemical System has an extra ability of ______________

A

removing the fuel by coating it

79
Q

________ have become the new NFPA standard for fire protection of cooking surfaces.

A

Class K extinguishing system

80
Q

Class K is a subclass of Class _______

A

Class B

81
Q
  • They leave no residue and do not harm computers or electrical equipment.
  • Extinguishing agent may be FE-36 or Centrimax ABC 40
  • Effective for class A, B, and C fires
  • Considered nontoxic, nonconductive, and ecologically safe.
A

Clean Agents

82
Q

Clean agents may be ______ or ______

A
  • FE-36

- Centrimax ABC 40

83
Q

In a sprinkled building, an activated system will disrupt the ________, making visibility very low to almost zero

A

Thermal Balance

84
Q

In general, a high-rise kit should be capable of flowing at least _____ GPM

A

250 GPM

85
Q

Equipment for high-rise kit:

A
  • Water their or gated Y
  • Spanner wrench
  • Pipe wrench
  • Hand wheel
  • smooth bore nozzle
  • Door wedges
  • Hand tools
86
Q

The standpipe connection should always be made on the _____________

A

floor below the fire floor

87
Q

The easiest way to advance the hose from the stairwell would be to flake the hose _________________

A

Up the stairs to the floor above the fire floor, so gravity can assist you

2017 FireFighting S&T (Blue book) (19 decks)

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