February 2005

Rotating Equipment/Reliability

Pump control strategies benefit from compressor know-how

Similar techniques can be used to avoid problems with parallel operation

Mirsky, S., Compressor Controls Corp.

Operating pumps in parallel is not without risk. Parallel operation takes on added importance whenever high-pressure pumps are involved. In fact, some users have experienced serious pump failures on their first installation with perhaps only two pumps operating in parallel. Indeed, some users actually expect problems controlling parallel operation of multiple pumps. This is where centrifugal compressor control strategies and related know-how should come into play. For many years, competent manufacturers and providers of surge abatement devices have implemented these strategies with great success in compressors. The pump projects recently analyzed by at least one company lead to the con

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