Combustion systems normally fixed by gas, oil, coal or other fuels, and employed in the production of energy, generally pose a greater potential threat due to the existence of explosive fuel - air mixtures. During operation of such systems the highest degree of safety must constantly be stricken for under any conceivable state of operation. Hence suitable monitoring and control equipment must be used which is always in the position to check and control the process in a fail safe manner. Furnace Safeguard Supervisory System (FSSS) and Flame Scanners which are suitable for continous operation and normally used in combustion systems [eg. PowerPlant, Refineress esc] are essential components of a complex safety. By this paper I am explaining the importance and some logical operation of FSSS.

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