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    TEXT VERSION OF SLIDE:

    Title: Combustible

    Type: Text and Image Slide

    Content:
    • UEL (or UFL) - Upper Explosive (Flammable) Limit - concentration above which there isn′t enough oxygen to support combustion.
    • LEL and UEL values in tables assume a normal concentration of oxygen (20.9%). Oxygen enriched environments are much more unstable.

    [Image of building on fire]