Characteristics of natural Gas
Methane is __% of Natural Gas
96%
LEL and UEL gas in air
5%;15%
CH4
CO
CO2
Methane
Carbon Monoxide
Carbon Dioxide
When does it expand and where does it flow
When heated; From high pressure to low pressure
11 total parts of proper combustion
1 part natural gas
11 parts air
LEL and UEL
Lower and Upper explosive limit
Weights:
Natural Gas
Air
Propane
0.6
1
>1
Temp of ignition source
1100-1200 degree F
AOC, describe it
and EFV
Abnormal Operating Conditions: deviation from standard operations
Excessive Flow Valve
When is CO in the picture?
During incomplete combustion
Name of first three answers
Fire Triangle
CNG and LNG
Compressed Natural Gas
Liquified Natural Gas
Is it naturally toxic?
No
When combustion is sustained
Fire Tetrahedron
%=LEL=PPM
1%
5%
15%
20 LEL; 10000 PPM
100 LEL; 2000 PPM
300 LEL; 6000