Page 118 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Pump Best Practices Best Practice 2 .25

Best Practice 2.25Practice 2.25
Best

Have every centrifugal pump curve available in the control Lessons Learned
room and instruct all operators on their use to optimize Unnecessary centrifugal pump maintenance and pump
centrifugal pump safety and MTBF. failures result from operators not checking the pump test
Centrifugal pumps produce flow inversely proportional to the pro- curves, or confirming that the pump operates within its
cess head required. EROE and understanding their use.
The safety and reliability of all centrifugal pumps is optimized if
We have found that approximately 80% of the root causes of
pumps are operated within the equipment reliability operating envelope
centrifugal low MTBFs (below 36 months) are due to process changes,
known as the EROE.
not operator error, which can be significantly avoided by incorporating
This flow range is obtained by having operations aware of the
this best practice.
centrifugal pump characteristic, providing process targets and having
the pump test curves available for each pump for operator use and Benchmarks
understanding.
I have employed this best practice since 1990 in upstream oil and gas,
refinery and chemical plants to optimize plant safety and to produce
pump MTBFs in excess of 80 months.

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