Nait 4Th Period Fire Sprinkler Systems

Front 1

Type A fires are

Back 1

Wood, paper etc

Front 2

Type B fires are

Back 2

Flammable liquids

Front 3

Type C fires are

Back 3

Electrical

Front 4

What is the fire sprinkler codes

Back 4

NFPA 13D

Front 5

List the seven advantages of sprinkler systems

Back 5

Saves lives

Saves property

Overall fire protection

Good for business

Lower insurance premiums

Increase property values

Cost efficient

Front 6

What are the three sprinkler system types

Back 6

Dry

Wet

Pre-action

Front 7

Explain Dry system

Back 7

Contains only pressurized air

Front 8

Explain wet system

Back 8

Always full of pressurized water

Front 9

Explain Pre-action

Back 9

Contains air that may/may not be under pressure and requires double signal to activate

Front 10

There are two temperature ratings for residential sprinklers

Back 10

Ordinary - 135 to 170F

Intermediate - 175 to 225F

Front 11

What are the three styles of sprinklers

Back 11

Pendant

Sidewall

Upright

Front 12

What materials may be used in piping

Back 12

Copper K L M

CPVC

Cross linked polyethylene PEX

Front 13

Materials should be rated at

Back 13

175 psi at 120F

Front 14

PEX piping should be supported

Back 14

Every 32in including 6in from ends

Front 15

What is the minimum pipe size

Back 15

3/4in

Front 16

When a sprinkler has multiple supplies, what is the minimum size

Back 16

1/2in

Front 17

A sprinkler system should have a minimum supply of water of

Back 17

30min

Front 18

The four sources of water are

Back 18

Water mains

Elevated storage tank

Pressure tank that meets NFPA

Storage tank with automatic pump

Front 19

What is the minimum protection required for piping

Back 19

3/8in drywall

Front 20

What are the three types of fire detectors

Back 20

Smoke

Thermal

Flame detector

Front 21

Smoke detectors detect the earliest stages of fire. They can be either

Back 21

Ionization or photoelectric

Front 22

Thermal detectors have the lowest number of

Back 22

False alarms

Front 23

Thermal detectors come in three types of detection

Back 23

Fixed temperature

Rate of rise and fixed

Rate anticipation

Front 24

Flame detectors use

Back 24

Electromagnetic waves

Front 25

There are two types of water flow alarms. They are

Back 25

Water flow alarm signal

Pressure operated electric switch

Front 26

Sprinkler system must be hydrostatically tested at

Back 26

200psi or 50psi in excess of the operating pressure whichever is greater for at least 2hr

Front 27

The minimum distance between sprinklers is _____ max______

Back 27

8ft

12ft

Front 28

The maximum coverage area of a sprinkler is

Back 28

144in2

Front 29

The distance from ceiling to sprinkler deflector is

Back 29

1 to 4in