4 CASE STUDY: Leak Detection Yields Savings Background & Challenge A major oil refi nery uses electric motor-driven reciprocating compressors for their hydrogen processes with energy costs being a signifi cant operating expense. Their critical compressors are protected and monitored with Windrock Platinum online systems, providing real- time measurement of head-end and crank-end pressure, crosshead and frame vibration, rod drop and rod run out. The refi nery received a warning from the Platinum system when the Leak Index exceeded the alarm set point of 4.5 on the crank-end of one cylinder. The proprietary Leak Index tool is derived from pressure measurements and is used to identify suction and discharge leaks, as well as ring leakage. The system trends Leak Index for each cy

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