LPG (Liquefied Petroleum Gas) is made of refined petroleum or natural gas.
It consists of Propane and Butane compound. compound ratios in our country: 30% Propane and 70% Butane for bottled LPG.
Propane Density: 0.520 - 0.555 gr/cm³
Butane Density: 0.560 - 0.580 gr/cm³
The capability of LPG to liquefy under pressure facilitates the storage and transport of LPG. LPG is in gaseous state under normal conditions. It can be liquefied under relatively low pressures in pressurized containers. When the pressure is eliminated, it turns to GAS state from LIQUID state. The volume increases for 250 times during the transition. That’s why; large amount of gas with high heating value can be stored in low volume (as LIQUID under pressure).
LPG is not a poisonous gas
LPG is not a poisonous gas. When LPG spreads in the atmosphere, it removes the oxygen in the atmosphere as it is heavier than air; therefore; the atmosphere gets airless and health effects may be observed as there is not enough oxygen. However, when carbon monoxide (poisonous) or carbon dioxide (suffocative) spreads in the atmosphere as a result of LPG burning, the atmosphere must be aerated and chimneys must be used carefully.
The first action in LPG fires is to call the fire department. For the fire to occur, there must be flammable objects, flame, sparks or other heat sources and oxygen in the atmosphere. If possible, gas flow must be blocked by turning the tank valve off. If the fire is not as large as it can harm the person to take action, ABC type extinguisher can be used to respond. In outdoor fires, the wind must be at the back and the extinguisher must be directed at the source. In case the fire is extinguished, the steps in gas leakage section must be followed.
Can a tank explode?
Tanks are filled with LPG to some extent. If the flames heat the container, liquid LPG starts boiling and turns the safety valve on by increasing the internal pressure. (When pressure in safety valves on the tank reaches a level that is over operation pressure of the tank, the valves open and prevent an explosion by increasing pressure in the tank). In case there is heat in the Gas (steam) section, the gas section cannot transfer heat to the liquid section and cannot reach a certain internal pressure level by opening the safety valves (Liquid LPG is a cooler in this case). When there is not enough pressure and safety valve does not open, a section of the container will redden by the flames and lose its strength (Self-treatment). This will cause an expansion in the weakest section of the container and it will be torn. Resulting substance will cause an explosion. It is not possible for the tank to explode in a different situation.