Can Container Houses Catch Fire?

Container houses pose a fire risk, and once a fire breaks out, it can lead to severe consequences. The specific reasons are as follows:

I. Material Hazards
To reduce costs, some container houses use flammable materials such as polystyrene and polyurethane foam as core materials. These materials have poor fire resistance and can be ignited by open flames or high-temperature sources like welding sparks and cigarette butts. For example, in the 2025 container fire in Linping District, Hangzhou, 150,000 yuan in cash stored by the homeowner was burned. The cause of the fire may be related to the flammability of the materials. When flammable materials burn, they produce molten droplets that can spread the fire, and the combustion products are highly toxic, increasing the risk of casualties.

II. Electrical Faults
Aging, short-circuiting, or equipment failures in electrical wiring are common causes of fires. For instance, the 2020 fire in a container-modified house in Langfang City was caused by a fault in the electrical switch wiring that ignited weeds; the 2018 fire in a container mobile home in Tianjin Binhai New Area, which resulted in two deaths, was triggered by electrical wiring issues. Additionally, if equipment such as generator sets and starter motors is not properly maintained, it may ignite oil and gas due to arcs, sparks, or high-temperature components.

III. Fuel Leakage
If container houses are used to store fuels like diesel, poor sealing of fuel tanks, aging pipelines, or loose connections can lead to leakage. The flammable vapor formed by diesel evaporation can explode when exposed to open flames or high-temperature surfaces. For example, when the generator set in a diesel-powered container is running, the surface temperature of the cylinders and exhaust pipes can reach 300-500℃, far exceeding the auto-ignition point of diesel (220-250℃). If leaked diesel is atomized and splashed onto high-temperature components, it can instantly ignite a fire.

IV. Difficulty in Rescue Operations
Container houses have a closed structure with iron sheet cladding, making it difficult for fire hoses to penetrate during firefighting. The fire spreads rapidly, and the structure is prone to collapse, increasing the difficulty of rescue operations. For example, in the Linping District fire, firefighters had to dig through the rubble to retrieve the cash, indicating thorough internal combustion and severe structural damage.

Preventive Measures:

1. Use Class A fire-resistant materials (such as rock wool boards and fire-resistant cotton) to construct container houses and avoid flammable core materials;
2. Standardize electrical wiring, install protective sleeves, and use metal galvanized switch boxes with open installation;
3. Keep away from heat and fire sources and maintain a safe distance during open-flame operations;
4. Equip with simple firefighting equipment and maintain a minimum distance of 6 meters between houses;
5. Regularly inspect fuel storage equipment to prevent leakage.