ASA Fire Protection System Flashcards

Questions and Answers

In what area of an aircraft would you find a carbon monoxide detector?

Cockpit and/or cabin (correct)

Cargo hold

Galley

Cockpit only

What occurs when a visual smoke detector is activated?

A lamp within the indicator illuminates automatically (correct)

An alarm sounds

The indicator turns off

The detector requires manual reset

The types of fire-extinguishing agents for aircraft interior fires are?

Water, carbon dioxide, dry chemical, and halogenated hydrocarbons (correct)

Only dry chemical

Halogenated hydrocarbons only

Water and foam only

When air samples contain carbon monoxide, portable carbon monoxide detectors containing yellow silica gel will turn which color?

Green Signup and view all the answers

Smoke detection instruments are classified by their method of?

Detection Signup and view all the answers

Smoke detectors which use a measurement of light transmissibility in the air are called?

Photoelectrical devices Signup and view all the answers

A contaminated carbon monoxide portable test unit would be returned to service by?

Installing a new indicating element Signup and view all the answers

Which fire-detection system measures temperature rise compared to a reference temperature?

Thermocouple Signup and view all the answers

A carbon dioxide (CO(2)) hand-held fire extinguisher may be used on an electrical fire if the?

Horn is nonmetallic Signup and view all the answers

The proper fire-extinguishing agent to use on an aircraft brake fire is?

Dry powder chemical Signup and view all the answers

Smoke in the cargo and/or baggage compartment of an aircraft is commonly detected by which instrument?

Photoelectric cell Signup and view all the answers

Light refraction smoke detectors are activated when the detector?

Senses light reflected from smoke particles passing through a chamber Signup and view all the answers

Why does the Fenwal fire-detection system use spot detectors wired parallel between two separate circuits?

A short may exist in either circuit without causing a false fire warning Signup and view all the answers

A fire-extinguisher container can be checked to determine its charge by?

Weighing the container and its contents Signup and view all the answers

What is the color code for fire-extinguisher lines?

Brown Signup and view all the answers

The most common cause of false fire warnings in continuous-loop fire-detection systems is?

Dents, kinks, or crushed sensor sections Signup and view all the answers

A thermocouple in a fire-detection system causes the warning system to operate because?

It generates a small current when heated Signup and view all the answers

The thermocouple fire-warning system is activated by a?

Rate-of-temperature rise Signup and view all the answers

When used in fire-detection systems having a single indicator light, thermal switches are wired in?

Parallel with each other and in series with the light Signup and view all the answers

Built-in aircraft fire-extinguishing systems are ordinarily charged with?

Halogenated hydrocarbons and nitrogen Signup and view all the answers

In reference to aircraft fire-extinguishing systems, (1) during removal or installation, the terminals of discharge cartridges should be grounded or shorted. (2) before connecting cartridge terminals to the electrical system, the system should be checked with a voltmeter to see that no voltage exists at the terminal connections. Regarding the above statements,

Both No. 1 and No. 2 are true Signup and view all the answers

What method is used to detect the thermal discharge of a built-in fire-extinguisher system?

A rupture of the red plastic disk in the thermal discharge line Signup and view all the answers

The thermal switches of a bimetallic thermal-switch type fire-detection (single-loop) system are heat-sensitive units that complete circuits at a certain temperature. They are connected in?

Parallel with each other, but in series with the indicator lights Signup and view all the answers

Using the chart, determine the temperature range for a fire-extinguishing agent storage container with a pressure of 330 PSIG. (Consider 330 PSIG for both minimum and maximum pressure.)

45 to 73°F Signup and view all the answers

Determine what pressure is acceptable for a fire extinguisher when the surrounding area temperature is 33°F. (Rounded to the nearest whole number.)

215 to 302 PSIG Signup and view all the answers

On a periodic check of fire-extinguisher containers, the pressure was not between minimum and maximum limits. What procedure should be followed?

Replace the extinguisher container Signup and view all the answers

In some fire-extinguishing systems, evidence that the system has been intentionally discharged is indicated by the absence of a?

Yellow disk on the side of the fuselage Signup and view all the answers

If a fire extinguisher cartridge is removed from a discharge valve, it should be?

Used only on the original discharge valve assembly Signup and view all the answers

Which of the following are fire precautions which must be observed when working on an oxygen system?

All of the above Signup and view all the answers

Which fire-extinguishing agent is considered to be the least toxic?

Bromotrifluoromethane (Halon 1301) Signup and view all the answers

Maintenance of fire-detection systems includes the?

Replacement of damaged sensing elements Signup and view all the answers

A squib, as used in a fire-protection system, is a?

Device for causing the fire-extinguishing agent to be released Signup and view all the answers

Study Notes

Carbon Monoxide Detection

Carbon monoxide detectors are located in the cockpit and/or cabin of an aircraft.
Portable detectors containing yellow silica gel will turn green when air samples contain carbon monoxide.

Smoke Detection

Visual smoke detectors activate an indicator lamp automatically.
Smoke detection instruments are classified by their method of detection.
Photoelectric devices measure light transmissibility in the air to detect smoke.
Photoelectric cells commonly detect smoke in cargo and baggage compartments.
Light refraction smoke detectors are activated by reflected light from smoke particles.

Fire-Extinguishing Agents

Commonly used fire-extinguishing agents include water, carbon dioxide, dry chemical, and halogenated hydrocarbons.
The proper agent for an aircraft brake fire is dry powder chemical.
Bromotrifluoromethane (Halon 1301) is considered the least toxic fire-extinguishing agent.

Fire-Detection Systems

Thermocouples in fire-detection systems measure temperature rises compared to a reference temperature, generating a small current when heated.
Continuous-loop fire-detection systems often produce false warnings due to dents, kinks, or crushed sensor sections.
Built-in fire-extinguishing systems are typically charged with halogenated hydrocarbons and nitrogen.

Maintenance and Procedures

Inspect fire-extinguisher containers by weighing them to determine charge status.
Replace fire-extinguisher containers that do not maintain pressure within minimum and maximum limits.
A ruptured red plastic disk in the thermal discharge line indicates thermal discharge in built-in systems.
Evidence of intentional discharge in some systems is indicated by the absence of a yellow disk on the fuselage.

Safety Precautions

Follow fire precautions when working on oxygen systems: display 'No Smoking' signs, provide firefighting equipment, keep tools free from oil or grease, and avoid checking electrical systems.
When removing a fire extinguisher cartridge, it should only be used with the original discharge valve assembly.

Fire-Warning Systems

Thermal switches are connected in parallel with each other but in series with indicator lights to operate the warning system.
The procedure for a contaminated carbon monoxide test unit involves installing a new indicating element.

Additional Notes

Fire-extinguisher line color coding is brown.
For fire-extinguisher storage containers, a pressure of 330 PSIG corresponds to a temperature range of 45 to 73°F.
Acceptable pressure for fire extinguishers in a 33°F environment ranges from 215 to 302 PSIG.

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Description

Test your knowledge on fire protection systems used in aircraft with these flashcards. Each card provides questions about smoke detectors, carbon monoxide detectors, and fire-extinguishing agents. Perfect for aviation students and professionals looking to refresh their knowledge.