当前位置:首页 >> 电力/水利 >>

Fire Protection


CAFUC
Fire Protection

J. Long

Contents

2/49

? ? ? ? ? ? ?

General Fire detection system Overheat detection system Smoke detection system Fire extinguishing system Lavatory fire extinguishing system Control and indication of built in fire extinguisher system

Fire Protection

General

3/49

? Aircraft fire zones

Fire Protection

General

4/49

? Fire classification of aircraft

Fire Protection

General

5/49

? Fire extinguishing agent used in aircraft
Fire classification Suitable fire extinguishing agent A B C Water, Freon, Powder Freon, CO2, Powder Freon, CO2, Powder

D

Powder

Fire Protection

General

6/49

? Aircraft fire protection systems

Fire Protection

General

7/49

? Fire warning indications
– Warning lights + Warning bell

Fire Protection

General

8/49

? According to FAR25
– Engine nacelles, APU compartments and Fuel burning heaters must be provided with fire detection systems and built in fire extinguisher systems.

? Hand fire extinguishers are necessary in the cockpit, cabin, class A and B cargo compartment. ? Other installation (refer to P135)

Fire Protection

Fire detection system
– Wire type sensor (electrical sensor element) – Gaseous sensor/ responder tubes – Infrared ray sensor

9/49

? Three types of sensor and fire detection system

Fire Protection

Fire detection system

10/49

? Wire type sensor
– Consists of an inconel tube where one or two inner conductors are placed in semiconductor material.

FENWAL

KIDDE

Fire Protection

Fire detection system

11/49

? Wire type sensor
– The semiconductor has characteristic of negative temperature coefficient.

FENWAL

KIDDE

Fire Protection

Fire detection system

12/49

? Wire type sensor
– Sometimes the sensors are protected against mechanical damage by a perforated cover tube.

Fire Protection

Fire detection system

13/49

? Wire type sensor
– Schematic of wire type warning system

Fire Protection

Fire detection system

14/49

? Wire type sensor
– For even more reliability the engine fire warning system is equipped with dual loop detectors.

Fire Protection

Fire detection system

15/49

? Gaseous sensor/ responder tube

Fire Protection

Fire detection system

16/49

? Gaseous sensor/ responder tube
– Average section overheat detection
? The helium by which the tube is filled expands when the average section of the sensor is heated and activated the fire warning.

– Spot section overheat detection
? Spiral “discrete element” ties down hydrogen when the temperature is low and disengages the hydrogen when the temperature of a spot section of the sensor increases.

Fire Protection

Fire detection system

17/49

? Fire sensors used in civil transport aircraft

Fire Protection

Overheat detection system

18/49

? The wire type and the gaseous sensor/ responder tube fire warning systems are also used as overheat detection systems. ? The differences to fire warnings are
– Lower onset temperature level – No warning bell – No fault warning

Fire Protection

Overheat detection system

19/49

? Sometimes bimetallic switches are used as overheat detectors.

Fire Protection

Smoke detection system

20/49

? Mostly used in cargo and E/E compartment
– Photoelectric smoke detector

Fire Protection

Smoke detection system

21/49

? Mostly used in cargo and E/E compartment
– Ionization smoke detector

Fire Protection

Smoke detection system

22/49

? Mostly used in cargo and E/E compartment
– Ionization smoke detector

Fire Protection

Fire extinguishing system

23/49

? Built in fire extinguishing system
– According to FAR 25
? One fire extinguisher required for APU. ? Two fire extinguisher required for any main engine.

Fire Protection

Fire extinguishing system

24/49

? Built in fire extinguishing system
– Fixed fire extinguisher uses freon gas as the extinguishing agent with nitrogen gas used to pressurize the bottles.

Fire Protection

Fire extinguishing system

25/49

? Built in fire extinguishing system
– Overpressuer indicator (red) – Discharge indicator (yellow)

Fire Protection

Fire extinguishing system

26/49

? Built in fire extinguishing system
– Discharge squibs

Fire Protection

Fire extinguishing system

27/49

? Built in fire extinguishing system
– Pulling out the fire switch/ handle

Fire Protection

Fire extinguishing system

28/49

? Built in fire extinguishing system
– Preparing for discharging the extinguishing agent

Fire Protection

Fire extinguishing system

29/49

? Built in fire extinguishing system
– Turing the fire switch/ handle to discharge the extinguishing agent, bottle discharged lights on.

Fire Protection

Fire extinguishing system

30/49

? Built in fire extinguishing system
– Freon gas has the following extinguishing effects
? Anticatalytic effect
– Lower the velocity of the chemical reaction (burning).

? Cooling effect
– Expansion of freon.

? Suffocation effect
– Supplant the oxygen since freon is heavier than air.

Fire Protection

Fire extinguishing system

31/49

? Built in fire extinguishing system
– Cautions: In order to prevent poisoning
? Avoid contact with the agent. ? Do not breathe the agent. ? Ventilate areas before entering.

Fire Protection

Fire extinguishing system

32/49

? Hand fire extinguishers
– Freon/ halon fire extinguishers are usually used in aircraft. – There might be also water, carbondioxide or dry chemical fire extinguisher.

Fire Protection

Fire extinguishing system

33/49

? Hand fire extinguishers

Fire Protection

Fire extinguishing system

34/49

? Hand fire extinguishers

Fire Protection

Fire extinguishing system

35/49

? Hand fire extinguishers

Fire Protection

Fire extinguishing system

36/49

? Hand fire extinguishers

Fire Protection

Fire extinguishing system

37/49

? Hand fire extinguishers

Fire Protection

Fire extinguishing system

38/49

? Hand fire extinguishers

Fire Protection

Fire extinguishing system

39/49

? Hand fire extinguishers

Fire Protection

Fire extinguishing system

40/49

? Hand fire extinguishers

Fire Protection

Lavatory fire extinguishing system

41/49

Fire Protection

Lavatory fire extinguishing system

42/49

Fire Protection

Lavatory fire extinguishing system

43/49

Fire Protection

Lavatory fire extinguishing system

44/49

Fire Protection

Lavatory fire extinguishing system

45/49

Fire Protection

Control and indication of fire extinguisher system

46/49

Fire Protection

Example of Fire Protection System

47/49

? B737-800 fire protection system

Fire Protection

48/49

? Please translate the following pages into Chinese:
– – – – – 134、135、136、137 (Team 1) 138、139、140、141 (Team 2、3) 142、143、144、145、146 (Team 4) 148、149、150、151 (Team 5、6) 152、153、154、156 (Team 7)

Fire Protection

49/49

END OF THIS CHAPTER

CAFUC
Fire Protection



相关文章:
Final-Fire Safety Plan--消防安全计划
FIRE SAFETY PLAN 安徽中加学校消防安全计划 PURPOSE 目的 Prevention is the key in eliminating conditions, which may contribute to the cause of any fire. ...
Fire Protection Impairment Program消防系统中断管理程序
Fire Protection Impairment Program消防系统中断管理程序_计算机软件及应用_IT/计算机_专业资料。FireProtectionImpairmentProgram 消防系统中断管理程序 1. Purpose 目的 ...
Lecture 3 Fire-Protection Systems
Lecture 3 Fire-Protection Systems_计算机软件及应用_IT/计算机_专业资料。Professional English on Water Supply and Sewerage Engineering Text Lecture 3 Fire-...
SC-XXX-TP-018_Fire Prevention and Protection Procedure
SC-XXX-TP-018_Fire Prevention and Protection Procedure_能源/化工_工程科技_专业资料。FIRE PREVENTION AND PROTECTION PROCEDURE XXX PROJECT Doc. No. Rev. No...
消防救火流程Fire Fighting Procedures
消防救火流程Fire Fighting Procedures_建筑/土木_工程科技_专业资料。消防救火流程 1.一旦发现火情,及时通知 EHS 和生产值班经理(由生产 提供值班表和值班经理电话...
Fire Fighting
Therefore, first should be clear about the following design basis: 1st, must grasp the architectural design fire protection standard, the system design ...
fire fighting
Therefore, first should be clear about the following design basis: 1st, must grasp the architectural design fire protection standard, the system design ...
Megdragon Software for fire fighting system prouduct ...
(Include Taiwan) and we developed a series of comply with NFPA, ISO and EN standards of fire protection engineering design software in the international ...
(更正)六年级单元总结(第二单元)Unit2 Fire safety 0327
Let’s= let us 阻止火势 stop the fire 话题,主题 topic 在…附近 near 保持 keep 科学课 science class 观看;手表 watch 灯笼 lantern 喊叫 shout 客厅 ...
fire safety management regulation
implement working policy of prevention the first as well as combination of prevention and protection, fulfill the fire safety duty and safeguard fire ...
更多相关标签: