Abstract
Fire propagation in hydrocarbon storage tank farms is a critical safety issue in oil industries. This is an intriguing topic due to its severe impact on environment, economy, and more importantly on human lives. Contradictions in standards and codes regarding optimum cooling water application rate and spacing between tanks represent an industrial problem, which trigger researchers’ interest. In this paper, thermal radiation from pool fires on adjacent storage tanks surfaces is modelled and calculated. The rate of heat absorbed by the cooling water on these adjacent tanks is discussed, from which the suitable amount of cooling water application rate on each tank segments could be determined. New distribution technique of cooling water application rate according to amount of heat removal required from each tank segment is proposed and applied on a real tanks farm case study. Decentralized application rate control scheme provides promising results in comparison to traditional uniform centralized technique. For controlling application rates on different tank segments, PIC control sliding valve is suggested to be used instead of traditional Deluge ON/OFF valve used for uniform cooling water distribution control.
Published Version
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