SMOKE IS THE
BIGGEST KILLER OF FIRE
Hazards in the fire
THE THREE KILLERS IN THE FIRE
The three main culprits that affect people in a fire scene are "smoke, heat, and darkness." Flames may endanger human lives, smoke can cause inhalation injuries, etc., and darkness can cause intense fear in people's hearts.
From the point of view of the lethal factor of the fire, the number one killer is the thick smoke, and the most terrifying thing in the thick smoke is the toxic gas. The attack of fire.
THICK SMOKE IS FULL OF TOXIC GAS
Various products such as carbon monoxide, unsaturated hydrocarbons, nitrogen oxides, carbon dioxide, sulfides and other toxic gases will be produced after various furniture and decoration materials are burned. Once inhaled, it may cause nerve paralysis or brain disorders. , Resulting in death due to hypoxia.
With this dangerous temperature, the smoke has the ability to ignite the entire room and increase the temperature drastically.
SMOKE SPREADS QUICKLY
The direction of smoke flow will guide the path of the fire spreading, and the speed of smoke spreading in the fire scene is very fast. Especially the rising speed of smoke is about 3 to 5 meters per second, which is much larger than the horizontal movement speed of smoke 0.5~1m/sec. Generally speaking, the speed of escape is far less than the speed of smoke flow. Here is a practical example for the public For example, the highest building 101 in my country is 508 meters high, and it only takes 2 minutes for smoke to reach the top of the building. Taking this practical example, it is easier for the public to feel the speed of rising 3 to 5 meters per second. How fast.
EXTREMELY HIGH SMOKE TEMPERATURE
According to the column of the Chinese Society for Disaster Management, the temperature of the smoke in the fire site will exceed 200 degrees Celsius after about 2 and a half minutes after the fire is on the fire site. If inhaled, it will definitely cause human injury. Dense smoke will also increase the indoor temperature. High temperature will speed up people's blood circulation, breathing and heartbeat, and skin burns, burns, necrosis, and ulcers. When the indoor temperature reaches about 150 degrees Celsius, the breathing air will have a burning sensation; according to the report of the Institute of Architecture of the Ministry of the Interior, wood will naturally ignite when it exceeds 500 degrees Celsius, and the dense smoke can easily exceed this dangerous temperature, so The smoke has the ability to ignite the entire room and increase the temperature drastically.
