Fire engine knowledge explanation

I. Overview of fire engines:

A fire engine, also known as a fire engine, is a vehicle specially designed for firefighting or other emergency rescue. Fire trucks can be divided into pump trucks (pump trucks), ladder trucks and other special purpose vehicles. Fire engines are usually stationed at fire stations, and firefighters drive to the scene in case of an alarm. Most area fire engines are painted bright red (some areas also have bright red) huangse fire engines) with alarms and flashing lights on the roof. The fire engine is equipped with all kinds of fire fighting equipment. The general term for various firefighting vehicles is current firefighting appliance budui The main tool for fighting fire is basic mobile firefighting equipment. The quality level of fire engines reflects the level of fire equipment and even reflects the level of fire fighting.

Ii. Fire engine color decryption:

The sun is red. Orange. Yellow. Green. Green. Blue. Composed of seven colors purple, its wavelength and deflection Angle is different. Sunlight shines on objects, and various objects form various colors to different wavelengths of light. In visible light, red light wavelength, small deflection Angle, easy to pass through the water layer. Rain. Dust and fog. Orange and yellow light are not afraid of obstacles, and can penetrate these objects. That's why fire trucks are painted red, in foggy weather. It can be seen from a distance in dusty conditions or during storms, making way for it to finish its fire-fighting rescue mission as quickly as possible. Most fire engines are red. Because it stands out, you can see it from a distance. But according to the New York Department of Transportation, there are 32 accidents per 100,000 red fire engines. If fire engines were painted brighter yellow, there would be only 14.5 accidents per 100,000 trips, down by more than half. Because light colors make the outline of the car look bigger and feel closer to you, which is conducive to traffic safety. So they advocated painting fire engines yellow. But with fire departments adamantly opposed to this, yellow is emotionally stable and reduces firefighting efficiency, while red is more motivating and exciting.

Iii. Pay attention to the operation of fire engines:

Some problems should be paid attention to when the fire vehicle enters the fire site for fire fighting and rescue operation.

1. After the fire fighting vehicle enters the fire site, the fire site commander shall designate the parking position of the vehicle. The parking position of the vehicle can meet the needs of fire attack and evacuation. It is necessary to ensure the flexibility and freedom of evacuation from the dangerous position at all times. The vehicle engine must be kept in running state, not blindly flameout, delay the fighter. When the fire engine starts to supply water, the water pressure should be increased gradually to avoid the casualties of combatants or the blasting of the hose caused by the reaction force of the water cannon and the sudden pressure boost of the water hammer, which will affect the smooth development of the fire and rescue work. In the process of laying fire hoses, if there are sharp objects on the road and ground (such as broken glass, which is common in fires), the hoses should be protected and placed to affect fire fighting through rolling hoses.

2. When accessing the water source, pay attention to whether the water supply pressure of the hydrant can meet the needs of the fire engine. When diverting natural water sources, pay attention to the depth of the pond. Sludge condition, to prevent the water inlet of the water intake pipe from being affected by the sludge, resulting in the interruption of fire water supply.

3. When the water source from the fire exceeds the direct water supply capacity of the fire engine, the relay water supply mode of the fire engine should be adopted. Drivers of water supply trucks should be aware of the overflow of the receiving pipe and maintain proper water supply. When the rear car cannot observe the overflow situation of the front car, the front driver can open the manhole in the upper part of the tank to prevent the tank from supplying too much water. In the process of water supply, the receiver shall choose a hard road to park on, and when the necessary hard road is taken, necessary measures shall be taken to prevent the vehicle from getting bogged down by overflow. For direct coupled relay water supply, the same type of fire engine should be used as far as possible, and the vehicles should coordinate with each other to prevent interruption of water supply due to improper operation. When the direct water supply pressure is high, care should be taken to maintain appropriate water pressure to prevent injury to combatants.