The main scenarios of carbon monoxide as a harmful gas

Different Carbon Monoxide Conditions
In Daily Life
It’s usually caused by carbon monoxide buildup due to incomplete combustion of fuel or poor indoor ventilation .
1. Rooms heated by coal stoves, charcoal braziers, or fireplaces often have poor ventilation due to closed doors and windows , resulting in incomplete combustion of coal and the accumulation of large amounts of carbon monoxide.
2. Where gas stoves and gas water heaters are used, gas leaks , improper installation of water heaters , or blockage of exhaust pipes can lead to the accumulation and backflow of carbon monoxide.
3. When charcoal is used in a closed room, the burning of the charcoal consumes a large amount of oxygen , and due to poor ventilation, the concentration of carbon monoxide in the closed space will rise rapidly.

Enclosed Environment
The interior environment of various modes of transportation , such as cars idling for extended periods and the crowded cabins of passenger planes, can also be a source of carbon monoxide contamination. Additionally, poor ventilation and excessive carbon monoxide levels may exist in refuge chambers of underground buildings and facilities.

Industrial Scenarios
1. Steel-making, iron-making, coking, and other metallurgical processes, various chemical synthesis processes , and boiler combustion may also produce large amounts of carbon monoxide if there is insufficient oxygen supply or equipment malfunction.
2. In steel-making, coking, ammonia synthesis, and gasification furnace work areas , regular equipment and pipeline maintenance also requires preparations for gas leaks and carbon monoxide poisoning before entry.
3. Poorly ventilated enclosed spaces such as underground pipe trenches, coal bunkers, desulfurization towers, and boiler interiors are prone to carbon monoxide accumulation. Therefore, relevant inspections and maintenance procedures must include pre-emptive measures to prevent carbon monoxide from entering.

At the Disaster Scene
1.Mine gas explosions produce large amounts of carbon monoxide.
2.Metallurgical and chemical processes such as steel-making, coking, and ammonia synthesis , if equipment aging or pipeline rupture leads to gas leaks, it can easily cause mass respiratory poisoning and potential open flame explosion risks (producing large amounts of carbon monoxide).
3.The thick smoke produced at the fire scene contained a large amount of carbon monoxide.

Prevention and Accident Response
We will provide solutions and suggestions for specific scenarios in the next chapter, focusing on both preventing carbon monoxide poisoning and dealing with carbon monoxide at accident scenes .