Final

Question 0

What is a Class A fire zone?

Answer 0

There are large quantities of air flow past regular arrangements of similarly shaped obstructions.

Question 1

What are the two functions of a fire protection system ?

Answer 1

Detection, extinguishing.

Question 2

What is a Class B fire zone?

Answer 2

Large quantities of air flowing past aerodynamically clean obstructions.

Question 3

What is a Class C fire zone?

Answer 3

Relatively small quantities of air flow.

Question 4

What is a Class D fire zone?

Answer 4

Little or no airflow

Question 5

What is a Class X fire zone?

Answer 5

Large quantities of air flowing past regular arrangements if irregularly shaped obstructions and/or at irregular rates.

Question 6

What does a zone determine?

Answer 6

The volume of extinguishing agent required.

Question 7

What is an example of a class D fire zone?

Answer 7

Wheel wells and inside the wing

Question 8

What is an example of a class C fire zone?

Answer 8

Engine accessory compartment

Question 9

What is an example of a Class B fire zone?

Answer 9

Heat exchanger ducts, manifold shroud

Question 10

What is a thermoswitch system?

Answer 10

Spot detector triggered by specific overheat temp.

Question 11

Describe the operation of a fenwal system.

Answer 11

Electrical bimetallic switch mounted in stainless steel housing heats and expands, the contacts close to complete the warning circuit to power light/alarm.

Question 12

What two metals are used in a thermocouple system?

Answer 12

Iron & constantan

Chromel and alumel

Question 13

What is a continuous loop triggered by?

Answer 13

Specific overheat temp

Question 14

What is an advantage of using continuous loop?

Answer 14

Provides more complete coverage.

Question 15

Describe the construction of

The fenwal continuous loop system.

Answer 15

Single wire surrounded by ceramic beads wetted with eutlectic salts in an inconel tube

Question 16

Describe the operation of a kidde continuous loop system.

Answer 16

Ceramic core changes resistance with temperature, allowing current to flow and activating the warning circuit.

Question 17

What does a Lindbergh sensing element consist of?

Answer 17

A sealed, gas filled stainless steel tube.

Question 18

What are three basic types of detectors?

Answer 18

Overheat
Rate of rise
Flame detectors

Question 19

How are smoke detectors classified?

Answer 19

The principle of operation

Question 20

What are the three classifications of smoke detectors?

Answer 20

Light refraction type
Ionization type
Solid state type

Question 21

What concentration of carbon monoxide causes impairment?

Answer 21

.02%

Question 22

Where are carbon monoxide detectors usually found ?

Answer 22

In the cockpit and cabin

Question 23

Explain the operation of a radiation detector

Answer 23

Fire emits an infrared radiation that is sensed by the detector.

Question 24

What is a class A fire?

Answer 24

Ordinary combustibles!

Question 25

What is a class B fire?

Answer 25

Flammable liquids!

Question 26

What is a Class C fire?

Answer 26

Energized electrical equipment!

Question 27

What is a Class D fire?

Answer 27

Flammable metal!

Question 28

What does the class of fire determine?

Answer 28

The type of agent required

Question 29

What are the three requirements for fire?

Answer 29

Oxygen, fuel, heat.

Question 30

What is the definition of fuel?

Answer 30

Something that will combine with oxygen in the presence of heat.

Question 31

What is the definition of oxygen?

Answer 31

An element that readily combines with other substances.

Question 32

What is heat?

Answer 32

The catalyst that accelerates the combining of oxygen and fuel.

Question 33

What fires can water be used on?

Answer 33

Only class A

Question 34

What fires can dry chemical powder be used on?

Answer 34

class ABC

Question 35

What class fires are inert cold gas agents used on?

Answer 35

Abc

Question 36

What class fires is specialized dry powder user on?

Answer 36

d

Question 37

What are handheld portable extinguishers required by?

Answer 37

FAR 23.851, 135.155

Question 38

What are unsuitable types of hand held extinguishers?

Answer 38

Co2, dry chemical.

Question 39

HRD systems provide high rate of discharge through:

Answer 39

High pressurization Short feed lines Large discharge valves and outlets

Question 40

What does a bottle transfer switch do?

Answer 40

Selects the second bottle which can then be discharged.

Question 41

What does pressing the bottle discharge switch do?

Answer 41

Ignites the squib, breaks a frangible disk, and discharges the HrD bottle.

Question 42

Why must special caution be taken with Fps maintenance?

Answer 42

Harsh environment , delicate construction, high pressure and explosive devices.

Question 43

When inspecting Fps what things must be checked?

Answer 43

``` Security Cracked or broken wires or sections Abrasions Proper safety wiring Rubber grommets in place Dents and kinks Nuts, right type and torque Routing and proper support 8-12 in Operation check cO detectors should be inspected for discolouration and out of date ```

Question 44

What could cause an intermittent alarm?

Answer 44

An intermittent short

Question 45

What could cause the fire alarm and warning lights to occur when no fire or overheat condition exists?

Answer 45

A short, detector flaw,

Question 46

What is the most common cause of false alarms?

Answer 46

Kinks or sharp bends in a sensing element

Question 47

What is used to check sensing elements?

Answer 47

A mega ohm meter

Question 48

What could cause the failure to obtain an alarm?

Answer 48

``` Defective test switch Defective control unit Lack of source voltage Inoperative indicator light An open in the sensing element or connecting wires. ```

Question 49

Servicing and repair of the systems usually consists of what ?

Answer 49

Cleaning and replacement of components.

Question 50

What things do you want to inspect when dealing with extinguishing systems?

Answer 50

``` Security of components Bottle pressure indication Squib date Leak test discharge tubing Wiring continuity Extinguishing system indicators ```

Question 51

What does a discharged yellow disk mean?

Answer 51

Agent has been discharged through cockpit controls

Question 52

What does a missing red disk indicate ?

Answer 52

Agent has been discharged as a result of over pressure/heat

Question 53

How often must extinguishing bottles be removed and tested?

Answer 53

Five years

Question 54

What is the extent of repair on extinguishing bottles?

Answer 54

Fluid line/electrical issues and replacement of components