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The Hazards of Propane Torches

Propane torches are useful tools for many cutting and welding applications. They are not as powerful as oxy-acetylene or arc welders, but this does not mean that they do not pose serious risks. However, with due care and attention to guidelines, you can avoid many of the risks associated with propane torches.

  1. Direct or Indirect Burns

    • Though propane torches do not burn with as high a temperature as some other types of welding torch, they still create a flame that is sufficiently hot to cause serious damage to the human body. Avoid direct contact with the flame or with materials heated by it at all costs. Wearing heat resistant gloves and outer clothing, using gripping tools to manipulate hot metal and exercising due diligence should prevent these kind of injuries from occurring.

    Explosion of Tanks

    • As with any compressed gas, compressed propane represents a fire hazard. If exposed to extremes of temperature, a propane tank can explode, which can be extremely dangerous. Always store propane torches and the attached gas tanks outside and away from other possible fire risks such as fuse boxes. For increased safety, store fuel tanks in a sealed, solid container made from concrete. Never leave a burning torch unattended. When extinguishing a torch, make sure the valve at the container is shut and allow all the fuel in the hose to burn off before you put away the torch.

    Gas Leak: Ignition

    • Most propane torches use small tanks that allow the entire device and fuel to be easily handled. However in certain environments, such as a workshop or factory--where static, prolonged use is required, a large propane tank is more practical than smaller tanks, which you must change continuously. Large tanks introduce additional hazards. Prolonged leakage of a large tank can lead to buildup of propane in the air. If the density of propane in the air gets sufficiently high, contact with a flame or spark can cause the gas to ignite, causing an explosion and fire. Check all valves regularly, and store propane tanks in a secure location outside and away from possible cause of ignition.

    Gas Leak: Asphyxiation

    • A leaking propane tank can slowly fill a space with gas, which can result in asphyxiation. Propane torches typically use small gas canisters that do not contain enough gas to pose a serious problem. However, a large refill tank or a small tank leaking in a confined space can create a hazard. Storing propane tanks outdoors, regularly inspecting valves and ensuring good ventilation in the area of work will go a long way to prevent hazards of this sort. Remember that propane is heavier than air and will sink, which means that if you can smell it strongly at head height, a large volume of gas will have already accumulated at ground level.

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