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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 /> Probability of losing sprinkler protection for one and two systems, with independent failures and with a shared water supply. Based on Parkinson et al. (1994), as cited in Nowlen et al. (2005b), p. P-6, and Barry (2002), p. 5-201.<br /> <br /> Original illustration for [[Common cause failure]], level 4 Expert.<br /> <br /> * Source basis: Parkinson et al. (1994), as cited in Nowlen et al. (2005b), p. P-6 (unreliability 0.02, excludes dependent failures and maintenance unavailability); Barry (2002), p. 5-201 (80 h per year downtime example)<br /> * Alt text: Log-scale bar chart: one system 0.02 or 0.029 with shared supply; two systems 0.0004 if independent, 0.0095 with shared supply.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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