Abstract
Abstract Dry Gas Seals (DGS) for centrifugal compressors exist in the process industry for the last almost thirty years and almost all the compressor units operating in the industry today are equipped with Dry Gas Seals. High operating and maintenance costs, unreliability and hazardous characteristics inherent with the conventional lubricated shaft sealing systems have resulted in widespread utilization of the DGS and their associated sealing systems. This paper shall cover the design considerations including best operation and maintenance practices to enhance dry gas seals operating life and performance including: ▪Major factors affecting Dry Gas seals service life▪Seal Gas supply and control requirements▪Primary Gas seal venting and health monitoring▪Secondary Gas seal venting and health monitoring▪Separation Gas supply control systems and health monitoring▪Recommended Alarm, Shutdown and Start-Permissive conditions
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