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<p>Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity</p> <p><b>New page</b></p><div>== Summary ==<br /> In a closed room, burning about 1 kg of fuel lowers the oxygen to about 10 per cent and the fire dies down; with an open door, inflowing air sustains the fire. Based on Purser (2002), p. 2-155, and Van Rossum (2027), §4.8.<br /> <br /> Original vector illustration for [[Oxygen depletion]], level 2 Intermediate.<br /> <br /> * Source basis: Purser (2002), p. 2-155 (about 1 kg of fuel lowers O2 to about 10 % in a closed domestic room); Van Rossum (2027), §4.8 and §4.11 (ventilation-controlled fire, external flames)<br /> * Alt text: Two room cross-sections: a closed room with a small dying fire and oxygen at 10 per cent; an open room with air flowing in low and smoke flowing out high.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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