Calculation of Limiting Oxidant Concentration LOC

This example shows how to calculate the limiting oxidant concentration of a vapor if an experimentally determined value is not available. [Pg.172]

From Eq. (4-2) (page 57), the LOC of a vapor, when nitrogen is the diluent, can he calculated as follows [Pg.172]

The amount of oxygen needed to completely react with hutane is [Pg.172]

LOC = 1.6(6.5 moles 0,/mole n-hutane) = 10.4 volume percent oxygen. [Pg.172]

The actual LOC, as reported in NFPA 69, is 12 volume percent oxygen when using nitrogen as an inerting gas. This calculation, in general, gives a value that is on the conservative (safer) side. [Pg.172]

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