NGA 70 Review – Properties of Natural Gas & Abnormal Operating Conditions –
Complete Study and Test Prep Guide
Aldehydes - Toxic substance formed from incomplete combustion
Carbon Monoxide - CO, byproduct of incomplete combustion
Products of incomplete combustion - CO, Aldehydes, Heat
Products of complete combustion - CO2, H2O, heat
Excess Flow Valve - shuts off flow when a predetermined value is exceeded.
Hydrocarbon - Combination of hydrogen and carbon found in natural gas, oil and coal.
Natural Gas Ignition Temperature - 1100-1200 F
Mercaptan - a sulfur like odor that is added to natural gas before distribution to the consumer, to give it
a distinct, unpleasant odor
Flammability range of natural gas - 5-15%
Specific gravity of natural gas - 0.6
Specific gravity of air - 1.0
specific gravity of propane - 1.56
Complete Study and Test Prep Guide
Aldehydes - Toxic substance formed from incomplete combustion
Carbon Monoxide - CO, byproduct of incomplete combustion
Products of incomplete combustion - CO, Aldehydes, Heat
Products of complete combustion - CO2, H2O, heat
Excess Flow Valve - shuts off flow when a predetermined value is exceeded.
Hydrocarbon - Combination of hydrogen and carbon found in natural gas, oil and coal.
Natural Gas Ignition Temperature - 1100-1200 F
Mercaptan - a sulfur like odor that is added to natural gas before distribution to the consumer, to give it
a distinct, unpleasant odor
Flammability range of natural gas - 5-15%
Specific gravity of natural gas - 0.6
Specific gravity of air - 1.0
specific gravity of propane - 1.56
