DOC AIRBUS | AMM A320FDETECTION - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
A. Definition
The design of the fire detection system is different according to the area which is monitored.
The design of the fire detection system is different according to the area which is monitored.
(1) Overheat and Fire Detection
- The fire and overheat detection elements are installed in each engine nacelle and in the APU compartment.
(2) Smoke detection
- The function of the smoke detection system is to monitor each lavatory, the avionics compartment and cargo compartments.
2. System Description
A. Fire and Overheat Detection
Thermo-sensitive loops detect fire or overheat conditions. They trigger the warning by means of the Fire Detection Unit (FDU) when the temperature reaches the threshold of the monitored area.
Thermo-sensitive loops detect fire or overheat conditions. They trigger the warning by means of the Fire Detection Unit (FDU) when the temperature reaches the threshold of the monitored area.
(1) Engine
Two independent loops are installed in each engine nacelle. They are connected in parallel and according to an AND logic.
The purpose of this logic is to prevent spurious FIRE warnings.
The overheat and fire detection-system of the engine is detailed in ATA chapter 26-12-00.
Two independent loops are installed in each engine nacelle. They are connected in parallel and according to an AND logic.
The purpose of this logic is to prevent spurious FIRE warnings.
The overheat and fire detection-system of the engine is detailed in ATA chapter 26-12-00.
(2) APU
The detection system monitors the APU compartment where fuel and bleed air systems are possible fire sources.
The detection system comprises two independent loops. They are connected in parallel and according to an AND logic.
The purpose of this logic is to prevent spurious FIRE warnings.
The fire and overheat detection-system of the APU is detailed in ATA chapter 26-13-00.
The detection system monitors the APU compartment where fuel and bleed air systems are possible fire sources.
The detection system comprises two independent loops. They are connected in parallel and according to an AND logic.
The purpose of this logic is to prevent spurious FIRE warnings.
The fire and overheat detection-system of the APU is detailed in ATA chapter 26-13-00.
B. Smoke Detection
Smoke detectors are used to detect the visible and invisible combustion particles.
When the preset threshold is reached, the smoke detector triggers a warning via the Smoke Detection Control Unit (SDCU).
Smoke detectors are used to detect the visible and invisible combustion particles.
When the preset threshold is reached, the smoke detector triggers a warning via the Cabin Intercommunication Data System (CIDS).
Smoke detectors are used to detect the visible and invisible combustion particles.
When the preset threshold is reached, the smoke detector triggers a warning via the Smoke Detection Control Unit (SDCU).
Smoke detectors are used to detect the visible and invisible combustion particles.
When the preset threshold is reached, the smoke detector triggers a warning via the Cabin Intercommunication Data System (CIDS).
(1) Avionics compartment
In the avionics compartment, the smoke detection system is provided with one smoke detector.
The smoke detector is installed on the ventilation air-extraction duct.
When the warning is triggered, the crew members must initiate the smoke procedure.
The avionics-compartment smoke-detection system is detailed in ATA chapter 26-15-00.
In the avionics compartment, the smoke detection system is provided with one smoke detector.
The smoke detector is installed on the ventilation air-extraction duct.
When the warning is triggered, the crew members must initiate the smoke procedure.
The avionics-compartment smoke-detection system is detailed in ATA chapter 26-15-00.
(2) Avionics compartment
In the avionics compartment, the smoke detection system is provided with one smoke detector.
The smoke detector is installed on the ventilation air-extraction duct.
When the warning is triggered, the crew members must initiate the smoke procedure.
The avionics-compartment smoke-detection system is detailed in ATA chapter 26-15-00.
In the avionics compartment, the smoke detection system is provided with one smoke detector.
The smoke detector is installed on the ventilation air-extraction duct.
When the warning is triggered, the crew members must initiate the smoke procedure.
The avionics-compartment smoke-detection system is detailed in ATA chapter 26-15-00.
(3) Cargo Compartment
In the cargo compartment, there are ambient smoke detectors. They function in pairs to prevent spurious smoke warnings.
When a warning is triggered, the corresponding ventilation and heating system closes automatically.
The cargo-compartment smoke-detection system is detailed in ATA chapter 26-16-00.
In the cargo compartment, there are ambient smoke detectors. They function in pairs to prevent spurious smoke warnings.
When a warning is triggered, the corresponding ventilation and heating system closes automatically.
The cargo-compartment smoke-detection system is detailed in ATA chapter 26-16-00.
(4) Lavatories
Each lavatory is equipped with one smoke detector.
The lavatory smoke-detection system is detailed in ATA chapter 26-17-00.
Each lavatory is equipped with one smoke detector.
The lavatory smoke-detection system is detailed in ATA chapter 26-17-00.