May 2008

Special Report: Maintenance/Reliability

Improve pump reliability with advanced composite wear rings

The results were reduced vibration and seal leaks at this plant

Aronen, R., Bouden International; Boulden, B., Boulden Company; Russek, M., Sunoco, Inc

A refinery in the Northeast achieved significant gains in pump reliability by implementating an advanced composite wear ring program. Pump repair data, vibration data and seal leak data encompassing 68 years of cumulative run time were used to quantify the reliability impact of the program. In 2003, a refinery began a program to apply advanced composite wear rings, line shaft bearings and related components. By September 2006, the program had expanded to 61 pumps, at which point plant personnel quantified results. The reliability impact of the program was evaluated using pump repair history, vibration records and mechanical seal emissions data. Results indicate that the program has

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