It offers a place to start when developing a CBM process.
ISO 2372 VIBRATION STANDARD ISO
It is still referenced 20 years after ISO 2372 was withdrawn.Īfter 40 years of presentation, you would think that most would understand that this chart is not an absolute-it provides guidance only.
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A version of this chart is packaged with just about every vibration meter, vibration analyzer and vibration data collector on the market today. One example of performance criteria that must be evaluated and adjusted to fit a specific set of asset operating conditions is the old\'97from 1974-ISO 2372 Vibration Severity Chart. In the days before ISO 10816, Mechanical Vibration – Evaluation of machine vibration by measurements on non-rotating parts, Parts 1 through 6, there was ISO 2372, Mechanical vibration of machines with operating speeds 10 to 200 rev/s – Basis for specifying evaluation standards. The notions and concepts presented in this article are also applicable to those consensus standards that directly apply to in-situ pumps and fans, Hydraulic Institute and Air Movement and Control Association (AMCA) International. The discussion also deals with International Organization for Standardization (ISO) consensus standards associated with general equipment vibration. The following discussion focuses on broadband, filter-out, low-frequency vibration monitoring (less than 2 kilohertz ).
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The facility owner's engineer is typically responsible for that decision.ĭocumenting the criteria and providing training are also necessary to ensure that the defined performance criteria are globally understood and that consistent and coherent data is collected for analysis.Īsk yourself: Has your facility made this level of investment in its PM and CBM programs? Low-Frequency Vibration Monitoring If consensus standards or even original equipment manufacturer (OEM) recommendations are used as a basis for specific asset performance standards, those recommendations must be evaluated and, in most cases, adjusted to fit a specific set of asset operating conditions. Any defined performance standards should provide alarm values and shutdown values." In all of the CBM (and predictive maintenance ) courses I have developed over the years, I have always shared the following: "It is the facility owner's responsibility to establish performance standards (objective criteria). Specifically, when referencing national and international consensus standards as a basis for a facility's performance criteria, personnel must evaluate the criteria to ensure it is representative of the normal operating characteristics of the asset.
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The asset owner must refine and accept all performance criteria for it to be meaningful, and the criteria must be documented to ensure consistent application. Performance criteria is one of the most-if not the most-important aspects of a successful preventive maintenance (PM) and condition-based maintenance (CBM) program.