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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 /> Simplified fault tree for a two-path fire protection system. Events shared by both paths (orange, dashed outline) defeat the redundancy of the top AND gate. Based on Modarres and Joglar-Billoch (2002), pp. 5-37 to 5-38.<br /> <br /> Original illustration for [[Fault tree analysis]], level 4 Expert.<br /> <br /> * Source basis: Modarres and Joglar-Billoch (2002), p. 5-38 (Figure 5-3.19, structure of the tree), p. 5-37 (shared detector/alarm/actuator, electric power and water tank as physical dependencies), pp. 5-36 to 5-37 (system description); redraw, do not copy<br /> * Alt text: Fault tree with an AND gate over two path failures; tank, actuating device and power feed both paths, so each of them alone can fail the system.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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