Sketch a flammability triangular diagram for carbon monoxide with indication of the air and

stoichiometric lines, a flammable region, an In$-$Service Oxygen Concentration $($ISOC$)$; and an

Out$-$of$-$Service Fuel Concentration $($OSFC$).$

Tabulated data for carbon monoxide $($at $25C$ and $1$ bar$)$:

LOC$=8\%,LFL=10\%$ UFL $=94\%(In$ pure oxygen$)$

$LFL=12\mathrm{.}5\%,$UFL$=74\%(In$ air$)$