August 2007

Special Report: Fluid Flow and Rotating Equipment

Pump vibration, rotor balance and effect on bearing life

Rules-of-thumb and experience for optimally scheduling pump overhauls

Bloch, Heinz P., Hydrocarbon Processing Staff

Process pump user-operators often seek a method, or tool, for optimally scheduling pump overhauls. Many base their decision on projected energy savings or other considerations. Once developed, such a tool can be widely used by maintenance engineers and managers wishing to optimize production. Other worthy aims may even include minimizing greenhouse gas impact. In addition to being applied to pumps, a good optimization approach often fits other plant assets where deterioration would result in efficiency loss, and where energy consumption can be measured or estimated.1 However, some pump users prefer more simple rules-of-thumb and recent articles in widely read trade publications have unders

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