New Vibration Standard for Rotodynamic Pumps Released

The Hydraulic Institute (Parsippany, N.J.) 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 the evaluation of vibration on rotodynamic pump applications, specifically when the vibration measurements are made on non-rotating parts (bearing housing vibration). The general evaluation criteria are included for acceptance tests in field environments or at the manufacturer's test facility, as appropriate and as defined in the standard.

"This new normative vibration standard builds upon the trends begun in the previously published standard, with significant improvements that should facilitate the use of the document, allow it to find broad acceptance, and benefit the pump industry," said Jack Claxton, vice president of engineering for Patterson Pump Co. and chairman of the Hydraulic Institute Vibration Committee, which is currently drafting a guideline document titled "Dynamics of Pumping Machinery" that will supplement the standard.

According to HI, the new standard is based on experiences from pump users and manufacturers as well as vibration measurements by many companies. Vibration data from both factory test and field test environments have been incorporated into the maximum allowable vibration values. Values are applicable when the pump is installed according to the institute's or the manufacturer's specifications.

"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," said Mick Cropper, global product development manager for Sulzer Pumps US Inc. and vice-chairman of HI's Vibration Committee.

Copies of the new standard are available for $115 at the institute's e-Store (www.xx.com) or by calling the purchasing line at (973) 267-9700, ext. 118.

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