Ground gas and vapour properties

In this handbook groxmd gas and vapour are defined as follows  

Hazard Fiammabie, expiosive Toxic Fiammabie, expiosive, toxic Toxic, flammable, explosive Toxic, corrosive Flammable, explosive Toxic, flammable 

Description Coiouriess, Coiouriess, Coiouriess, fiammabie and Colourless, Colourless, toxic Colourless, Colourless, 

Formation Anaerobic Aerobic and Sulphate-reducing bacteria Incomplete Fixation of Chemical Degradation of 

Upper explosive or flammable limit (% vA in air) 15 Non- combustible 45.5 74.2 Non- combustible 74 40 

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