Engine Fire Protection Flashcards
1
Q
- What are the main categories of engine fire protection systems?
A
Spot-detections
Continuous loop
Flame detector
2
Q
- Name examples of spot detection type systems.
A
Thermal Switch & thermocouple
3
Q
- Name examples of continuous loop detection systems.
A
Fenwal
Kiddie
Pneumatic
4
Q
- When using a thermocouple type fire detector system, what happens if the engine overheats slowly?
A
It will not indicate a fire
5
Q
- How many thermocouple are required for engine fire detection?
A
Depend on size of the fire zone & total circuit resistance
6
Q
- Describe the operation of a kiddie continuous loop fire detector system>
A
Two wires imbedded in ceramic within an inconel tube, once heated there is less resistance completing the circuit lighting a light
7
Q
- Where does a thermocouple fire detector system its electrical power to operate?
A
Thermocouple produces power to operate
8
Q
- Describe a thermal switch fire detector system.
A
Once switch hits a determined temperature the circuit closes
9
Q
- Hope are thermal switches electrically connected in the circuit?
A
Parallel with each other series with lights
10
Q
- What is the most common cause of a false fire warning in a continuous loop detector system?
A
Dents,kinks, or crushed sensing elements, damage cause the internal wire to short out
11
Q
- Will a continuous loop fire detector still indicate the presence of a fire if the element is broken into two?
A
Yes
12
Q
- What two methods are used to discharge fire extinguishing agents?
A
Mechanic & eletrical
13
Q
- What method is used to release the fire extinguishing agent in a typical turbine engine fire protection system?
A
Electrically operated discharge valves with explosive cartridges
14
Q
- What method is used to determine proper fire extinguisher container pressure?
A
Visual look and see if gauge within limits
15
Q
- What is the color marking used to identify fire extinguishing lines?
A
Brown tag with row of black diamonds
