Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Fire Inspection And Code Enforcement > 9 Water-Based Fire Suppression Systems > Flashcards

9 Water-Based Fire Suppression Systems Flashcards

1
Q

Types of water based fire suppression systems

A 
Automatic sprinkler systems
Waterspray fixed systems
Water mist systems
Foam water systems
Standpipe and hose systems
Fire pumps
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What systems are designed to control contain or extinguish fires in the incipient stage

A

Automatic sprinklers.
Waterspray.
Watermist.
Foam water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Of the fires inside of sprinklered buildings what percentage were controlled or extinguished by the system

A

94%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Most fires and sprinklered structures are controlled by how many sprinkler heads

A

Five or fewer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Fire deaths in one and two family dwellings can be reduced by up to what % with the installation of sprinkler is

A

82%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Four types of sprinkler systems

A

Wet pipe.
Dry pipe.
Deluge.
Pre-action

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Open sprinklers attached to unpressurized dry pipes. System activated when detection device senses fire and opens water flow control valve all sprinklers discharge water simultaneously

A

Deluge sprinkler system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Continually charge with air that may or may not be pressurized. System only operates on both sprinkler opens and detection device in seeing area activate water flow control valve

A

Pre-action sprinkler system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What pipe system continually charge with antifreeze solution

A

Anti-freeze sprinkler system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Wet pipe system that uses sprinkler system to circulate water for non-fire protected building services

A

Circulating close loop system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

System where detection device activate water flow control valve, releases pressurized air system, and waters discharged when head opens

A

Combined dry pipe and pre-action system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

System of parallel cross mains connected together by multiple branch lines. any activated sprinkler will receive water from both means. Advantage of water flow from multiple directions

A

Gridded sprinkler system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

System of interconnected cross mains that provide multiple routes for water to reach any point. Branches are not connected

A

Looped sprinkler system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

System to operate repeatedly in response to detection device. Turn on and off based on demand of device

A

Multi cycle sprinkler system.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Protection systems are generally divided into two broad categories

A

Systems that detect hazardous conditions

Systems that control hazardous conditions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Every automatic sprinkler system must have a water supply of adequate

A

Volume pressure and reliability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What determines the minimum waterflow the sprinkler system

A

The hazard being protected, occupancy classification, fuel loading

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Water flow control valves for sprinkler services must be what type

A

Indicating type

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What type of valve is a post-indicator valve

A

Gate valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Similar to a PIV except that it extends horizontally through the wall with the valve operating not on the outside of the building

A

Wall post-indicator valve WPIV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Post-indicator valve assembly PIVA

A

Similar to PIV except it uses a butterfly valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Valve has a hollow metal post attached to the valve housing inside the valve stem there a target words that say open or shot

A

Post-indicator valve PIV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

This valve is located on the riser and used to flow water for the purpose of testing the waterflow alarm sprinkler system may be located in a remote part of the piping

A

Alarm test valves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

This is used to limit the flow of water to One Direction placed in the water supply line

A

Check valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Designed as a small hand wheel type of valve that usually turns counterclockwise to open and clockwise to close. Inspector test valve

A

Globe valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Used for drains an alarm testing sometimes known as stop or cock valve most commonly open or close with quarter turn

A

Ball drip valves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Sprinkler systems start with what

A

Underground water supply main

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Vertical sections of pipe that connects the underground supply to the rest of the piping system

A

System risers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Risers supply what type of pipe that directly serve a number of branch lines

A

Crossmain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Sprinkler heads are installed on the branch lines with short vertical sections of pipe called

A

Nipple risers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Traditional method for designing sprinkler systems that designates maximum number of sprinklers a given size of pipe can supply limited to light and ordinary hazards

A

Pipe schedule table

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Method for arranging pipes that his computer design based on the type of occupancy and hazard. Most accurate method and cost-effective design

A

Hydraulic calculations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Type of sprinkler head designed to suppress fires in high challenge hazards such as warehouses. Developed as a result of research into residential type sprinklers that must react rapidly to protect life in the room of origin

A

Early suppression fast response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Sprinkler head designed to cover an area of 20 x 20’

A

Extended coverage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Sprinkler head designed to produce large water droplets

A

Large drop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Sprinkler head designed to direct 40-60% of its discharge in a downward direction. And it may be altered to be an upright position with deflector flipped

A

Old-style or conventional

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Sprinkler head designed with an open orifice

A

Open

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Sprinkler head designed to provide increased life safety and hotels motels in similar residential occupancies

A

Quick response early suppression

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Sprinkler head designed to provide increased life safety and hotels motels with a larger coverage area than QRES

A

Quick response extended coverage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Design for fast response and residential occupancies were life safety in the room of origin his primary concern

A

Residential, RES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Sprinkler head designed to protect special hazards

A

Special

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Sprinkler head designed for use in storage areas under minimum operating pressure

A

Specific application control mode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Sprinkler head designed for use in general types of occupancies replaced old style or conventional and maybe this is a bright or pendant and take longer to activate than residential or quick response

A

Standard spray, SS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Sprinkler head designed for use in situations that require a special water discharge pattern

A

Nozzle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

Sprinkler head designed specifically for use in high rack storage spaces

A

Intermediate level or rack storage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Sprinkler head installed downward from the branchline

A

Pendant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Most common type of sprinkler release mechanisms

A

Fusible links
glass bulbs
chemical pallets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

Sprinklers are rated by their activation temperatures which may be stamped

A

On the sprinkler

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

Activates based on the maximum temperature expected at the level of the sprinkler under normal conditions

A

Specific application sprinkler

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

Activates pre-action and a dry pipe systems by smoke Heat rate of rise in protected area

A

Electronic Heat detector

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

Device measuring temperature in which to electrical conductors of dissimilar metals such as copper and iron are joined at the point where Heat is applied

A

Thermocouple

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

And what type of sprinkler system will sprinklers discharge water when the sprinkler thermocouple activates

A

Pre-action system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

Residential sprinklers require how many minutes of supply water

A

10 minutes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

If the residential structure is less than 2000 ft.² and no more than one story and height what is the required flowrate

A

Two sprinklers times seven minutes of operation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

For residential structures such as hotels and motels what is the minimum required water supply for sprinklers

A

30 minutes supply

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

Minimum waterflow and gallons per minute for individual sprinkler in residential

A

18 gallons per minute

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

Major difference between residential sprinklers and standard sprinklers

A

Sensitivity or speed of operation residentials operate faster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

In one into family dwellings sprinklers can be omitted from the following areas

A 
Bathrooms less than 55 ft.². 
Small closets less than 24 ft.². 
Garages. 
Porches. 
Carports. 
Uninhabited attics. 
Entrance hallways
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

Spacing for sprinklers and residential systems is a maximum of how many square feet

A

144 ft.² per sprinkler

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

Maximum space in between sprinklers and residential is how many feet apart

A

12 feet apart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

Maximum allowable distance of the residential sprinkler from the wall is

A

6 feet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

Some residential sprinklers can be spaced to protect and area as large as

A

20 x 20’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

The sprinkler spacing of 20 x 20’ the minimum discharge pressure is increased to

A

32.5 GPM for one head and 22.5 GPM per sprinkler for two operating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

Residential sprinklers are different from standard sprinklers and that they are designed to discharge water how

A

Higher up in the room

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

Minimum pipe size to be used in a residential sprinkler system

A

Half inch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

Minimum GPM for water supply for residential sprinklers

A

18 GPM for single sprinkler. 13 GPM for two or more sprinklers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

Waterspray fixed fire suppression systems are similar to but

A

Not considered an automatic sprinkler system.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

Waterspray fixed systems are used generally for specific or general hazards such as

A 
flammable gas and liquid materials 
Electrical equipment 
Class a 
Hazardous solids
exposure protection
69
Q

For site with an explosion hazard what type of system might be used

A

Ultra high-speed Waterspray fixed system

70
Q

A Watermist system is similar to a Waterspray fixed system except

A

It discharges a fine mist of water that absorbs larger quantities of heat

71
Q

Water missed systems raise the humidity in the room high enough to hold

A

The combustion process

72
Q

Water missed systems are currently used to protect the following types of hazards

A 
Gas jet fires. 
Computer equipment and rooms. 
Flammable and combustible liquids. 
Hazardous solids. 
Plastic fun furnishings. 
Aircraft passenger cabins. 
Ordinary class a.
73
Q

The basic pressure ranges a water most system operates

A

Low pressure
Intermediate
High

74
Q

Psi of a low pressure mist system

A

175 psi

75
Q

Psi of an intermediate mist system

A

175-500 psi

76
Q

Psi of a high pressure mist system

A

500+ psi

77
Q

Water mist systems work similarly to a deluge system in that

A

The nozzles are open and require two or more initiating devices to activate system

78
Q

Water supply should. Last at minimum how long for water mist

A

30 min

79
Q

Foam water system is. A hybrid of

A

Automatic sprinkler and foam extinguishing

80
Q

Foam water system is basically what type of system with foam introduced into it through educator and aerating nozzles

A

Deluge

81
Q

Foam water may stem foam expands how many times

A

6-8

82
Q

Foam system contains the following components

A 
Foam concentrate
Pump
Metering valve
Strainer 
System piping
Actuation unit
83
Q

Class I standpipes are for use by who

A

Firefighters

84
Q

Class I standpipes are threaded with

A

2.5” and possible reduced to 1.5”

85
Q

Class I standpipes are for use by whom

A

Trained building occupants

86
Q

Class I standpipes hose systems are composed of

A

1.5” thread, hose nozzle.

87
Q

Class iii standpipes hose systems are what type

A

Combination of I and ii. Have both 1.5” hose and thread and a 2,5” coupling

88
Q

Standpipes system contains water in system. Pressure constantly maintained when water supply control valve is opened

A

Automatic wet standpipe system

89
Q

Standpipe system that contains air under pressure. Water sent to station once valve is opened or switch is activated.

A

Automatic dry standpipe

90
Q

Standpipe system that contains unpressurized air and admits water automatically through use of dry pipe Valve when hose valve is opened

A

Semiautomatic dry standpipe

91
Q

Standpipe system that contains unpressurized air and has not permanent water supply. Needs to be fed by FDC

A

Manual dry

92
Q

Standpipe system that maintains water from domestic system to detect leaks but no permanent source and needs FDC connection

A

Manual wet standpipe system

93
Q

Most desirable type of standpipe systems

A

Automatic wet with auto water supply.

94
Q

Water supply for class I and ii standpipe systems bust provide what flow

A

500 gpm for at least 30 min with residual pressure of 100 psi at most remote 2.5 outlet.

95
Q

What residual pressure is required for the most remote 1.5” standpipe outlet

A

65 psi

96
Q

If more than one standpipe riser and connection is needed the water supply must provide how many gpm per outlet

A

250 gpm for reach additional riser with a max of 2500 gpm

97
Q

Horizontal standpipe systems that supply three or more class I and iii stations requires a minimum flow rate of

A

750 gpm

98
Q

For a class ii horizontal system what flow must be provided for the standpipe system at the highest outlet

A

100 gpm, for 30 min with residual pressure of 64 psi

99
Q

Water supply for standpipes in highrises are generally from

A

Fire pumps

100
Q

For class I and III systems in a highrise less than 100’, the minimum riser diameter is

A

4”

101
Q

Class I and iii standpipe system riser size in highrises over 100’

A

6”,

4” for top 100’

102
Q

Class ii standpipe riser size under 50feet

A

2”

103
Q

Class ii riser size over 50’

A

2.5”

104
Q

Class ii riser requirements over 275’ high

A

Must be divided into sections

105
Q

Buildings with combine sprinkler and standpipe riser minimum size is

A

6”

106
Q

Stand Pips should be placed so that no part of the floor is how far from a connection

A

130’

107
Q

Actual Jose connections of standpipes can be located no further than what from any floor level

A

6’

108
Q

True false class I and iii systems may require a standpipe 2.5” outlet on the roof

A

True

109
Q

Standpipe Roof connections are required in what circumstances

A

Combustible roof
Combustible structure or equipment on roof
Exposures that present hazard

110
Q

If standpipe discharge pressure exceeds 100 psi at the outlet, what is required

A

Pressure relating device.

111
Q

Pressure regulating device that consists of simple constricting orifice in waterway

A

Pressure restricting device

112
Q

Pressure restricting devices are limited to what circumstances

A

1.5” systems and 175 max pressure

113
Q

Pressure control devices

A

Preferred method for controlling standpipe pressure. Gauge to read pressure may or may not be adjustable

114
Q

Pressure reducing devices

A

Preferred for managing excessive pressure, spring and plunger.

115
Q

Pressure regulating devices for standpipes are notorious for

A

Failures

116
Q

Highrises with two or more standpipes zones require how many FDC

A

One for each zone

117
Q

Height beyond effective fire engine pumping capacity for standpipes

A

450’

118
Q

Main purpose of a fire pump is to

A

Increase pressure of water flowing through it

119
Q

Small capacity high pressure pump used to maintain constant pressure on the fire protection system

A

Jockey pump

120
Q

5 types of centrifugal fire pumps

A 
Horizontal split case
Vertical split case
Vertical inline 
Vertical turbine 
End suction
121
Q

Most common type of fire pump found in stationary fire suppression systems

A

Horizontal split case

122
Q

Horizontal split case is aka

A

Horizontal shaft pump

123
Q

Pressure exerted at the bottom by a stationary column of water directly proportional to the height

A

Head pressure

124
Q

Horizontal split case pumps pressurize incoming municipal water and is not self priming. Therefore

A

It cannot draft from a static source.

125
Q

Mot common gallons rating for horizontal split case pump

A

500-1500 gpm

126
Q

Horizontal split case pumps are not specifically rated for psi like engine pumps and are available as low and high as

A

40 psi to 290 psi

127
Q

Fire pump similar to horizontal except shaft is runs vertically

A

Vertical split Case

128
Q

Single stage pump designed to fit into an intake, discharge line with drive above the impeller

A

Vertical Inline

129
Q

Vertical inline pump is rated up to what gpm and psi

A

1500 gpm and 165 psi

130
Q

Vertical turbine pumps are very useful for

A

Lifting water from source below pump , up to 500 psi

131
Q

End suction pump is similar to split shaft horizontal except

A

They have centerline suction and discharge

132
Q

End suction pumps are rated at what psi and gpm

A

40-150 psi and 50-750 gpm

133
Q

Source of p,owner that operates fire pump

A

Driver

134
Q

Most common method for driving fire pump

A

Electric motor driver

135
Q

1000 gpm pump at 100 psi would require what hp motor

A

80 hp

136
Q

Diesel pump drivers need to be tested how often

A

Weekly for 30 min

137
Q

Fire pumps start when they detect

A

A drop in system pressure

138
Q

Temp rating for Uncolored or black ordinary sprinkler

A

135-170

139
Q

Temp rating for blue high sprinkler

A

250-300

140
Q

Temp rating for white intermediate sprinkler

A

175-225

141
Q

Temp rating for red extra high sprinkler

A

325-375

142
Q

Temp rating for green very extra high sprinkler

A

400-475

143
Q

Temp rating for orange ultra high sprinkler

A

500-575

144
Q

During preacceptance inspections inspectors should particularly take notice to

A

Pipe hangers

145
Q

Acceptance tests are performed on all water based systems when

A

Installation is complete and done by contractor.

146
Q

Auto sprinkler should be inspected when

A

During any normal scheduled inspection

147
Q

Inspections for water base suppression systems typically start where

A

In the riser room

148
Q

When inspecting a piv, what should be ensured

A

Bolts are tight, wrench in place and barrel casing intact

149
Q

On a water flow control valve inspectors should look for the following conditions

A

Alarm line shutoff valve is completely open

Valves to pressure gauges are open

150
Q

Static pressure above the clapper valve should be equal to or greater than

A

Static pressure below clapper

151
Q

Main drain aux drains and inspector drains should be in what position

A

Closed

152
Q

In dry systems the sprinkler riser room needs to be at least what temp

A

40 degrees f

153
Q

In a wet system, the areas where pipes are need to be at least what temp

A

40 degrees f

154
Q

What size in the main drain for risers 4” and up

A

2”

155
Q

System air pressure in dry systems should be between what psi

A

15-20 psi

156
Q

Inspectors only witness the sprinkler test they do not perform it on automatic systems because of the

A

Liability

157
Q

What extra sprinklers heads are required on hand along with a wrench

A

One of each temp rating

158
Q

Creeping or sliding of fusible link, indication of weak sprinkler, is called

A

Cold flow

159
Q

Cold flow is eliminated by

A

Using higher temp sprinkler or frangible bulb

160
Q

Obstructions from sprinkler heads, depending on type, should be how far from the head

A

18-36”

161
Q

For a water spray fixed system, inspectors should ensure a response time of less than

A

40 seconds

162
Q

For ultra high speed water spray fixed systems, the reaction time should be less than

A

100 milliseconds

163
Q

Empty air cylinders for water most should be hydro tested how often

A

5 years

164
Q

In discharged air cylinders in water most systems should be emptied and tested every

A

12 years

165
Q

Dry pipe standpipe systems should be hydro tested how often

A

Every 5 years

166
Q

Stationary fire pumps should be tested and inspected how often

A

Weekly

167
Q

Private water main supplies are flow tested

A

Every 5 years

168
Q

Hydrants should be tested by opening the cap and flowing water for no less than

A

1 min

169
Q

Dry barrel hydrants should completely drain in how long

A

No more than 1 hour

Fire Inspection And Code Enforcement (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions