Fire & Smoke Detection

Question 1

What are designated fire zones protected by?

Answer 1

The fire protection system

Question 2

Name the designated fire zones?

Answer 2

-engines & auxiliary power unit (APU)
-baggage & cargo compartment (forward loft)
-lavatories
-electronical/electronic equipment
-wheel wells (undercarriage bays)
-bleed air ducts

Question 3

Name the 4 fire detection methods?

Answer 3

-overheat detectors
-rate of-temp rise detectors
-flame detectors
-observation by crew members

Question 4

Name some fire protection systems?

Answer 4

-rate of temp rise detectors
-radiation sensing detectors
-combustible mixture detectors
-optical detectors
-observations by flight crew or passengers

Question 5

Fire detection system requirements include?

Answer 5

-rapid detection
-localised detection
-shut down fuel and power to area
-shouldn’t automatically extinguish
-should give possible fire warning
-should provide overheat warning

Question 6

What are the 3 main fire detection system requirements?

Answer 6

-thermal switches
-thermocouples
-continuos loop sensing systems

Question 7

What is the Fenwal system?

Answer 7

Inconel tube with eutectic salts

Question 8

What two filling compounds dos the fenwal system use?

Answer 8

-ceramic beads impregnated with eutectic salts
-aluminium oxide suspended in fibrous glass

Question 9

What type of system is the Kidde system?

Answer 9

Continuos loop

Question 10

What does a dual loop system protect against?