67Th Fire Detection, Alarms, And Suppression Sysytems

Front 1

A Fire Alarm System consists of three things;

Back 1

1. Initiating Devices

2. Notification Appliances

3. Fire Alarm Control Panel

Front 2

Standard for National Fire Alarm Code

Back 2

NFPA 72

Front 3

Brain of the system, linking the activation devices to the notification devices.

Back 3

Control Panel

Front 4

Manages and Monitors the proper operation of the system, indicates the source of an alarm, notification of the fire department, monitors faults in the system,

Back 4

Control Panel

Front 5

The Control Panel also manages the ___________ and ____________ power supplies.

Back 5

primary and secondary

Front 6

Primary Source usually _____-volt

Secondary source ___________.

Back 6

10

battery

Front 7

Used to silent and reset the alarm. - ________ __________.

Always _________ ____ _______ before the system is reset.

Back 7

Control Panel

verify no fire

Front 8

The Control Panel controls building features, such as _________ and __________ ___________.

Back 8

HVAC, sprinkler systems.

Front 9

Control Panels may have Remote _____________

Additional display panels separate from control panel located ________ _____ ________.

Back 9

Annunciators

near the door

Front 10

An automatic or manually operated device that, when activated, causes the system to indicate an alarm.

Back 10

Initiating Devices

Front 11

An audible and visual device that alerts building occupants when the system is activated.

Back 11

Notification Devices

Front 12

Fire Alarm System Components (3)

Back 12

1. Control Panel

2. Initiating Devices

3. Notification Devices

Front 13

Devices that detect or initiate the receipt of an alarm.

Back 13

Initiating Devices

Front 14

Manual Initiating Devices are located no more than _______ feet travel distance.

Back 14

200 ft

Front 15

Require a person to pull down a lever, toggle, or handle to activate the alarm.

_______ ________ causes the alarm to activate.

Back 15

Single-Action Pull Stations

One motion

Front 16

Require a person to perform two steps before the alarm will activate.

Reduces false alarms resulting from accidental initiation.

Back 16

Double-Action Pull Station

(ie; push in, THEN pull down)

Front 17

i. A replaceable slender glass rod that breaks when the handle on the manual pull station is pulled.

ii. Pulling lever provided requires force to _________ _____ ________.

iii. Serves as a _________ to malicious nuisance alarms.

Back 17

i. Breakglass Pull Station

ii. break the glass

iii. deterrent

Front 18

i. Clear plastic cover over pull station that activates a local alarm when lifted.

ii. Reduces ____________ alarms.

Back 18

i. Tamper Alarms

ii. malicious

Front 19

Manual Initiating Devices (4)

Back 19

1. Single-Action Pull Station

2. Double-Action Pull Station

3. Breakglass Pull Station

4. Tamper Alarms

Front 20

Automatic Initiating Devices (6)

Back 20

1. Smoke Detectors

2. Heat Detectors

3. Flame Detectors

4. Spark / Ember Detectors

5. Pressure Sensing Fire Detectors

6. Gas Detectors

Front 21

Smoke Detectors (4)

Back 21

1. Photoelectric Light Scattering Smoke Detectors

2. Photoelectric Light Obscuration Smoke Detectors

3. Linear Beam Smoke Detectors

4. Ionization Smoke Detectors

Front 22

Project light from a light source to a sensor. Smoke particles of sufficient density create the required change in transmission.

Back 22

Photoelectric Light Scattering Smoke Detectors

Front 23

Uses LED and a light sensor that does not receive light under normal conditions.

Light reaches the sensor when it is reflected by smoke particles.

Back 23

Photoelectric Light Scattering Smoke Detectors

Front 24

Good at detecting smoldering fires and smoke from fires in spaces remote from the detector.

Back 24

Photoelectric Light Scattering Smoke Detectors

Front 25

Same as Light Scattering, except the light sensor is placed directly in the beam.

Smoke interferes with light transmission and the light received by the sensor decreases, causing an alarm.

Back 25

Photoelectric Light Obscuration Smoke Detectors

Front 26

Desired in places where spot type detectors may be difficult to maintain and test, or where stratification is possible.

Consists of a sender and receiver.

Back 26

Linear Beam Smoke Detector

Front 27

Sender transmits an infrared light beam to the receiver.

Smoke obscures the light beyond predetermined levels and alarm is activated.

Back 27

Linear Beam Smoke Detector

Front 28

Good at detecting very small particles from a relatively clean burning or flaming fire.

Back 28

Ionization Smoke Detectors

Front 29

Contains small radioactive source inside a chamber that ionizes the air between a positive and a negative electrode.

Back 29

Ionization Smoke Detectors

Front 30

Smoke enters the chamber and neutralizes the charged particles, thus interrupting the charge between electrodes.

Back 30

Ionization Smoke Detectors

Front 31

Not used for life safety because they do not react fast enough to incipient fires.

Back 31

Heat Detectors

Front 32

Used in areas where smoke detectors cannot be used, such as dusty areas or environments affected by extreme warm or cold.

Back 32

Heat Detectors

Front 33

Less prone to false alarms than smoke detectors. Spot type heat detectors cover a specific floor area.

Back 33

Heat Detectors

Front 34

Single Station ________ ________ can be used in attics or storage rooms.

Back 34

heat detectors

Front 35

Heat Detectors (4)

Back 35

1. Rate-of-Rise Heat Detectors

2. Fixed Temperature Heat Detectors

3. Rate Compensated Heat Detectors

4. Line Heat Detectors