Exam Review: Fire Protection Systems Flashcards
(28 cards)
What 3 things are needed for a fire?
Fuel
Oxygen
Heat
What are class A fires?
Paper
Garbage
Fires that deal with oil, grease are classified as what?
Class B
What are class C fires?
Electrical
Fires that deal with metal are classified as what?
Class D
A green triangle is a symbol for what type of fire?
Class A
What is the symbol for a class C fire?
BLue circle
A red square is a symbol for what class?
Class B
What is thee symbol for a class D fire?
Yellow star
What is the best way to deal with class A fires?
Water
CO2, Halon, or dry powder works well on?
Oil and Grease fires
What is the best way to deal with class D fires?
Dry powder
Each aircraft must have at least how many fire extinguishers and must be inspected how many times?
At least one
Inspected once a year
What are the types of fire detection systems?
Thermo-switch
Thermocouple
Tubular
This type of spot detector uses a BI-METALLIC strip that extends to complete the circuit which activates a light in the flight deck
Thermo Switch
If more than one thermal switch is used, how are they connected and why?
In parallel so closing one switch provides warning
Describe a Thermocouple sensor
Rate of Rise
Two dissimilar metals
How does the THERMOCOUPLE sensor work?
Current produced if temp rise rapidly, sensitive relay, slave relay
What are the types of Tubular Continuous loop sensors?
Fenwall
Kidde
Pneumatic
Describe the Fenwall system
Inconel tube
Eutectic Salt
Nickel conductor
This sensor contains an inconel tube, and thermistor material and two electrical conductors and can have a DUAL loop system
Kidde system
How does the Kidde system work?
Change in resistance
Describe the Pneumatic system
Stainless steel tube filled with HELIUM
Center wire made of TITANIUM
What are the 2 sensing functions of the pneumatic system?
Averaging
Discrete
