Alarms and Sprinklers

Question 1

Name four types of smoke detectors

Answer 1

 Point type ionistation and photoelectric
 Beam type
 Air sampling type
 Household type

Question 2

What are the advantages/disadvantages of photoelectric smoke detectors?

Answer 2

The advantages of photoelectric detectors are:
 They provide early fire warning
 Sensitive to slow burning, smouldering fires
 Not affected by moving air.

The disadvantages of photoelectric detectors are:
 They have higher current consumption than
ionisation detectors.
 Less sensitive to flaming fires than ionisation
detectors.

Question 3

What type of smoke alarms are preferred by the fire service in Aus and why?

Answer 3

• Photoelectric type smoke alarms as:
  ➢ Provide early fire warning
  ➢ Sensitive to slow burning, smouldering fires
  ➢ Not affected by moving air

Question 4

What are the Operational Procedures when attending a FIP?
(LARA RII)

Answer 4

1. Locate the FIP
2. Access FIP cabinet and control facility
3. Record areas in alarm from the LCD screen
4. Acknowledge alarms
5. Reset alarm(s) in activation
6. Isolate alarm(s) that will not reset
7. Isolate ASE

Question 5

List 6 types of sprinkler systems?

Answer 5

 Wet pipe
 Dry pip
 Alternate wet and dry pipe
 Pre-action/dry pipe
 Residential
 Deluge

Question 6

What are the main components of sprinkler system?

Answer 6

1 - Main stop valve
2 -Non-return valves
3- Alarm valves
4- Local alarm device (LWG)
5 -Transponder (ASE)
6- Retard chambers (see alarm valve operation)
7 -Pressure gauges
8 -Anti-tamper devices (VMA)
9 -Pressure switches/ flow switches
10 - Jacking pumps

Question 7

The basic function of a sprinkler system is to?

Answer 7

 Detect the presence of fire.
 Attack the fire.
 Contain or extinguish the fire.
 Raise the alarm for occupants within the building and with the fire brigade

Question 8

What is a FIP and how does it work?

Answer 8

Fire indicator panel, contains controls and indicators for the fire detectors and
various detection and suppression systems in a structure

Question 9

What are 2 advantages of household smoke alarms?

Answer 9

• Low installation cost
• Low maintenance