The syllabus for firefighting training and exercises developed by Mu Tianyu for Syrian troops details the dry powder fire extinguishers provided by China, as well as four other commonly used fire extinguishers produced in China. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

One is, foam fire extinguishers. Mainly inside the fire extinguisher barrel, there are two containers, which hold two liquids, aluminum sulfate and sodium bicarbonate. Normally, the two solutions do not come into contact with each other and do not undergo any chemical reactions. When it is necessary to extinguish the fire with a foam fire extinguisher, it is only necessary to turn the fire extinguisher upside down, and when the two solutions are mixed together, a large amount of carbon dioxide gas will be generated, which can be sprayed at the fire place to extinguish the fire.

There is a problem with foam fire extinguishers that need special attention, when usually storing, do not touch the foam fire extinguisher, otherwise it will mix the two liquids inside, resulting in early failure.

Foam fire extinguishers are mainly suitable for extinguishing fires such as oil products and grease. However, it cannot extinguish the fire of water-soluble flammable and flammable liquids in the fire, such as alcohol, ester, ether, ketone and other substance fires; It is also not possible to extinguish a fire on a live device.

Second, carbon dioxide fire extinguishers. This fire extinguisher stores liquid carbon dioxide in the bottle, and when working, when the pressure handle of the bottle valve is pressed. The internal carbon dioxide fire extinguishing agent is sprayed out from the siphon through the bottle valve to the nozzle cylinder, so that the concentration of oxygen in the combustion area drops rapidly, and the flame will be suffocated and extinguished when the carbon dioxide reaches a sufficient concentration, and at the same time, because the liquid carbon dioxide will be rapidly vaporized, it absorbs a large amount of heat in a very short time, so it has a certain cooling effect on the combustibles and also helps to extinguish the fire.

Carbon dioxide fire extinguishers are particularly suitable for extinguishing initial fires of flammable liquids and gases, as well as fires of live equipment. It is often used in laboratories, computer rooms, substations and distribution stations, as well as places with high requirements for the maintenance of precision electronic instruments, valuable equipment or items.

The third is a water fire extinguisher. The extinguishing agent in this fire extinguisher is clean water. Water has a lower viscosity, higher thermal stability, greater density and higher surface tension at room temperature, making it an ancient and widely used natural fire extinguishing agent that is easy to obtain and store.

It mainly relies on cooling and asphyxiation for fire extinguishing. Because each kilogram of water is heated to the boiling point at room temperature and completely evaporated, it can absorb 2593.4KJ of heat. Therefore, it uses its ability to absorb sensible heat and latent heat to play a cooling and extinguishing role, which is incomparable with other fire extinguishing agents. In addition, the water vapor formed by the vaporization of water is an inert gas, and the volume will expand by about 1,700 times.

When extinguishing a fire, the water vapor generated by water vaporization will occupy the space of the combustion area, dilute the oxygen content around the combustion, hinder the fresh air from entering the combustion area, and greatly reduce the oxygen concentration in the combustion area, so as to achieve the purpose of suffocating and extinguishing the fire. When the water is in the form of a spray mist, the specific surface area of the water droplets and fog droplets formed will be greatly increased, enhancing the heat exchange between water and fire, thereby strengthening its cooling and suffocation effects.

In addition, it can also dilute some flammable and flammable liquids that are easily soluble in water; The water mist generated by the strong jet can emulsify the flammable and flammable liquid, so that the liquid surface is rapidly cooled, and the rate of combustible vapor generation is reduced to achieve the purpose of extinguishing the fire.

Then there's the simple fire extinguisher. It is characterized by a small fire extinguisher with a charge of less than 500 grams and a pressure of less than 0.8 megapascals, and it is a one-time use and can no longer be refilled. It is more suitable for standing at home, which is convenient for extinguishing sudden fires.

At present, the fire extinguishers used in China are 1211 fire extinguishers, chlorinated alkane fire extinguishers, etc., which are rarely produced. Because these fire extinguishers are harmful to the atmosphere or toxic, they are suitable for more professional and limited occasions, so these fire extinguishers are not currently suitable for use in all parts of Syria, and are only mentioned as a reference.

The training and exercise work in Syria made Mu Tianyu and every member of the team feel very real. Although the teaching and training environment is relatively primitive and rough, it is often a practice drill that is directly pulled to the fire scene after the war.

During an on-site firefighting and rescue, he was attacked by terrorists, Mu Tianyu quickly organized a counterattack and repelled the terrorists in time, but two Syrian firefighters were still killed.

"We have been hit by terrorist attacks a lot in the past, and each time multiple firefighters have died. Now that there are Chinese firefighters, we are even less afraid of terrorists. ”

Mu Tianyu also publicly said: "I hope that terrorists will come to their senses and will not continue to endanger lives and civilians' property." ”

On this day, a firefighter named Garisi suddenly received the news that a residential building had been blown up, and his wife, Nayima, who was eight months pregnant, was also at home in that building at that time.

He asked the Chinese instructors, who were conducting firefighting training and rescue exercises, to help: "Chief Mu, I beg you, please go and direct and lead us to carry out emergency rescue." ”

Mu Tianyu immediately figured out the situation at that time and asked, "Honey badger, please immediately understand the location that needs to be rescued and the accurate situation at the scene." ”

"Report to White Shark, a residential building collapsed, there may be more than ten residents in the building, who did not have time to evacuate the building before the bomb attack."

Mu Tianyu immediately ordered: "Gather the eagles, carry tools and instruments, and go to emergency rescue." ”

"Yes."

Led by Garici, the Hawk quickly arrived at the scene of the accident.

In front of him was a three-story residential building, which was hit by multiple shells on its vital parts, and the entire building collapsed. As reported by local firefighters, there are still 10 to 12 residents in the building who have been identified and have not escaped in time.

There is a shortage of firefighters in the area, and there is no guarantee that all fires will be alerted.

This also made Mu Tianyu and them pay close attention to the pace of training firefighters, and strive to solve the urgent need as soon as possible.

Rushing to the scene, Zuo Jianchao and Zhan Xuefeng each led the left and right wings of the eagle and began to carry out life detection.

Ouyang Jinghang led the middle of the Eagle, began to install the connecting air compressor, lay the pipeline, and prepared to immediately clean up the obstacles, open the passage, and go deep into the inner layer to rescue the lives trapped in the rubble once signs of life were found.

Suddenly, the left wing guard of the eagle reported: "Report the white shark, find signs of life, find signs of life." ”

When Garisi heard this, he hurriedly ran over, he carefully identified the room type, and felt that the person trapped below was probably his wife.

"Sir Mu, thank you so much, this sign of life must be my wife Bai Simai. Thankfully, I concluded that their mother and son were still alive. ”

Mu Tianyu immediately ran over as well, and carefully worked with Wei Li to use the life detector to locate the signs of life more accurately.

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