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NGA 70 - AOCS & PROPERTIES OF NATURAL GAS (ACTUAL RS.
Fuel or gas to burn, oxygen in the air to react, ignition source Combustion elements
Natural Gas and air mixtures, lower than 5% natural gas will not burn
Natural Gas and air mixtures, of approximately 5%-15% natural gas will burn
Natural gas and air mixtures, higher than 15% will not burn, but are considered hazardous atmospheres
Complete combustion results in water and carbondioxide
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Incomplete combustion results in by-products including carbon monoxide and aldehydes
A yellow flame on the normal gas burner indicates burner is out of adjustment or air, may result in carbon monoxide
Incomplete combustion is occurring and the appliance is not properly vented causes sharp pungent odor indicating the presence of aldehydes
If aldehydes are present, most likely this chemical is too carbon monoxide
Immediately evacuate the building, eliminate all sources of ignition, seek assistance from appropriate company personnel to ventilate the building Preventing Ignition of Combustible Gas
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