What happened to the burning of more than 90 buses and private cars in Beijing?

At noon on May 1, more than 90 buses and private cars in the parking lot of Xiedao Resort in Chaoyang District were burned into black "empty shells", resulting in heavy property losses (see above). In fact, such accidents are not uncommon. April and May are the frequent periods of catkin-induced fires in this city. Why did catkins have such a big disaster? Yesterday's Daxing fire experiment confirmed that the piled catkins would burn into pieces quickly when exposed to an open fire, and the bottom of a car next to them would ignite in ten seconds. In order to prevent this kind of fire from happening again, recently, the Beijing fire department coordinated the landscaping and sanitation departments, and mobilized sprinklers, micro fire stations, full-time government fire brigades and small fire stations to carry out humidification work simultaneously. At the same time, streets and communities carry out popular science among the masses to remind everyone to pay attention to fire safety.

Analysis? Catkin contains a lot of oil? Encountering an open flame will cause flashover.

On May 2, this newspaper reported that a fire broke out in a parking lot of Xiedao Resort in Chaoyang District. The fire spread along the wind direction, and dozens of buses and private cars were burned. Hundreds of meters of smoke made the witnesses unforgettable. So what caused the fire to burn so fast and violently?

Afterwards, the fire department said that during the fighting, firefighters found that a large number of poplars and willows were planted around the parking lot, and there were large areas of catkins and catkins piled up on the ground. The Emergency Notice of the General Office of Beijing Municipal People's Government on Cleaning Catkins to Prevent Fire also pointed out that after preliminary investigation, the fire was caused by the rapid burning and spread of accumulated catkins.

In fact, in this season, catkins are the "assists" of fire. From late April to early May every year, when the weather gets warmer and the air is dry, and there is no effective precipitation in the city for a long time, catkins love to float in groups. Because of playing with fire, arson, domestic fire and other reasons, sudden fires often occur in weeds, trees, green belts, garbage and agricultural and sideline places attached to catkins. From April 28th to 29th this year alone, 686 fires were reported in119 * *. Among them, there were 346 fires in vilen, accounting for more than half. The fires were mainly caused by catkins, trees and weeds.

According to Wang Jian, instructor of Huangcun Squadron of Daxing Fire Brigade, "Catkin is full of a lot of oil, which will cause flash when it meets an open flame", which is an important reason for catkin to cause fire. Besides, catkins are everywhere, everywhere, whether around haystacks, houses, ditches or greenhouses. If not controlled in time, it is easy to ignite haystacks, houses, lawns, greenhouses and other items, forming a bigger fire.

Moreover, catkin fires mostly occur in rural areas, urban and rural areas and other places. Due to the geographical deviation and poor road traffic conditions, large fire engines of the fire squadron cannot enter, and sometimes even need to carry equipment on foot, which increases the difficulty of fire fighting. Judging from the regional distribution of fires, Fangshan, Shunyi, Huairou, Miyun, Changping, Pinggu, Tongzhou and other mountainous areas and forest areas account for a relatively large proportion.

Experiment? Catkin burns to pieces in 2 seconds when it meets fire? Automobile ignition 10 second.

How dangerous is catkin when it meets an open flame? Yesterday, Daxing Fire Brigade of Beijing Fire Bureau did an experiment to light a car with catkins in a car dismantling factory. Tell us the danger with real scenes.

The experimenter put an abandoned car on an open space, with some prepared catkins scattered around and at the bottom. The reporter noticed that these catkins have already shown a trend of "holding the group". Because of this characteristic, catkins tend to gather in corners, courtyards, screens or corridors after leaving trees.

After the experiment began, the fireman used a lighter to approach the catkins under the car, which just lit a handful of catkins. Two seconds later, a large area of catkins quickly "caught fire" and burned into a large piece. After more than ten seconds, smoke began to smoke under the car. In less than a minute, with the explosion of the left front tire of the car, an open flame emerged from the chassis of the car. In order to prevent the fire from spreading further, firefighters quickly put out the open flame with a fire extinguisher, and then washed the bottom and interior of the vehicle with fire water, completely eliminating hidden dangers.

This experiment shows that the fire of willow catkins spreads very fast and it is difficult to control after the fire. Instructor Wang Jian said: "Catkin is flammable. Experimental data show that it can burn quickly in two seconds when it meets an open flame. Some incompetent children learn from the phenomenon that adults light cigarettes and throw cigarette butts. Catkin can be easily ignited and become a fire fuse. We are only experimenting today, and citizens must not imitate it! "

In addition, instructor Wang Jian said that once this situation is found in life and it is confirmed that the vehicle is on fire, it is necessary to evacuate to a safe area quickly and call 1 19 in time. At the same time, make full use of fire extinguishers to put out the initial fire, control the spread of the fire as much as possible, buy time for fire officers and soldiers to put out the fire at the scene, and minimize the fire loss.

Prevention? Sprinkling water and humidifying continue to advance? The fire was effectively controlled.

At present, there are three main methods to control catkins. One is to gradually reduce the number of female poplars and willows and replace some old willows with multiple species. The second is to artificially adjust the output of catkin by injecting plant hormones. This method requires a high injection time and is injected every year. At present, it is only used for willows around key places. The third is to strengthen the daily management and pruning of trees, wet cleaning of catkin accumulation areas and fire source control.

In view of this situation, the Beijing Fire Prevention Committee issued the Emergency Notice on Preventing Catkin Fire Accidents, which informed the fire accidents and exposed problems, conveyed the instructions of leaders at all levels, and issued early warning and preventive measures for catkin fires.

In view of the recent high incidence of catkin fires in the city, we have learned a lesson from this fire accident. Constantly mobilize all districts to organize gardens, municipal administration, sanitation, neighborhood committees and other departments of streets, towns and communities, mobilize micro fire stations, community properties and grid forces to humidify and centrally clean the areas, parts and corners where catkins are stacked, increase the coverage of fire prevention publicity and training, and prevent fire accidents.

According to statistics, from April 30th to May 3rd, the humidifying operation * * * dispatched fire trucks 1638 vehicles, with 962 personnel1person, spraying nearly 32,000 tons of water and humidifying an area of 5.7 million square meters.

Zhao, deputy director of Tiangongyuan Sub-district Office in Daxing District, said in an interview yesterday that it is an arduous task to prevent fires caused by catkins because Tiangongyuan Street covers many urban-rural junctions and old communities. In recent days, the district has mobilized more than 3,000 social forces, dispatched vehicles 100, humidified an area of 360,000 square meters, and cleaned up combustible materials 10 tons. 12 open-air parking lot inspection, cleaning more than 20 wet catkins.

"We also cooperate with various communities and properties. On the one hand, it is clean and humidified, on the other hand, it publicizes fire safety to the masses, especially smokers, and cigarette butts are not littered. Parents should take good care of their children and don't ignite catkins because of curiosity. " Deputy Director Zhao said.

The day before yesterday, the Fire Department of Beijing Public Security Bureau made a special trip to visit the Municipal Bureau of Landscaping and Greening to publicize the catkin fire prevention work and resolutely curb the high incidence of such fires. It is suggested that the Municipal Bureau of Landscaping and Greening should organize the Forest Public Security Bureau and the District Bureau of Landscaping and Greening to mobilize greening, conservation, management and protection forces and vehicles, clean up in a wet way to the maximum extent, strictly control all kinds of fire sources, comprehensively reduce fire risks and effectively prevent fire accidents.

According to the latest statistics, from 8: 00 on May/KLOC-0 to 8: 00 on May 4, there were 4 fires in the whole city. Compared with the 686 fires from April 28th to 29th, the number of fires in the whole city has been effectively controlled.