[azt]

Hi


I'm trying to model gas leaks in a gas turbine enclosure and following the criteria in iso 21789:2009. In section 5.19.5 it says that:


"The screening calculation should be undertaken by comparing the volume of the cloud at the envelope contained by the 100% LEL contour, and converted to an equivalent volume at at stoichiometric concentration, with 0.1% of the enclosure volume."


What I don't understand is the phrase:


converted to an equivalent volume at at stoichiometric concentration


Any help would be greatly appreciated.


Thanks in advance.


allan