January 2021

Valves, Pumps and Turbomachinery

Resolving a chronic water injection pump high vibration through a shaft-lifting technique

This article explores the investigation into the chronic high vibration issues of a particular water injection pump.

This article explores the investigation into the chronic high vibration issues of a particular water injection pump. This pump had been prone to high vibration since 2014 and had been completely overhauled seven times. The vibration level persisted despite multiple corrective actions. This article examines how the root cause was identified and resolved after performing extensive vibration analysis. Pump problems A water injection pump (FIG. 1) had experienced high vibration over the last six years, and several attempts to reduce the vibration levels had failed. These attempts included alignment and a complete overhaul of the pump. Pipe strain checks at suction and discharge flanges were al

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