The Hydraulic Institute has published a new American National Standard for Rotodynamic Pumps for Vibration Measurements and Allowable Values (ANSI/HI 9.6.4 - 2009).

The standard applies to evaluation of vibration on rotodynamic pump applications when the vibration measurements are made on non-rotating parts (bearing housing vibration). It includes general criteria for acceptance tests in the field or at a manufacturer’s facility.

This document will be supplemented by Dynamics of Pumping Machinery, currently being drafted by the committee.

This standard is based on experience from pump users and manufacturers, as well as vibration measurements by many companies. Vibration data from both factory and field tests have been incorporated into the maximum allowable vibration values. Values are applicable when the pump is installed per specifications from the Hydraulic Institute or the manufacturer.

“The newly restated HI Vibration Standard comes as a result of substantial research and brings together collective experiences of pump users and manufacturers from a variety of industry segments,” states Mick Cropper, global product development manager for Sulzer Pumps U.S. Inc. and vice-chairman of the institute’s vibration committee.

Copies of Rotodynamic Pumps for Vibration Measurements and Allowable Values will be available from the Hydraulic Institute.