Tip: Creating baselines and alarms

Creating baselines and alarms The best alarm limit or baseline is created from data from the machine itself tested under a predetermined set of conditions including a set load, run speed, test setups and test points.  If one keeps test

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Tip: Create Case Histories

When using a condition monitoring technology to diagnose faults in machines or other plant assets, it is important to create case histories of each diagnosis, whether it was correct or not. If one uses vibration analysis for example, to detect

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Tip: Create a program flow chart

There is a difference between using a predictive technology for troubleshooting and using it in the context of a condition based maintenance program. In the latter, it is extremely important to define and standardize test procedures in order to insure

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Tip: Change test frequency based on condition

Condition monitoring is a process of using a technology to detect changes in machine health over time in order to make a prognosis about when the machine will likely fail and to plan repairs or overhaul before that point. The

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Tip: Performing a bump test

A bump test is used as a quick and easy method to look for natural frequencies (related to resonance) in a structure. A bump test is conducted by hitting the structure with a moderately soft object like a 2×4 in

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Tip: “As-found” condition

In condition monitoring programs, a technology will be employed to detect a problem with a machine or asset and a repair or overhaul may be conducted based on that information. Unfortunately, the overhaul is often conducted by another individual in

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Tips for Running a Successful PdM Program: Understand the Machine

Understand the machine By Alan Friedman When using vibration analysis or other predictive maintenance technologies, it is important to first identify the problem you want to solve and then consider the appropriate test or technology to solve it. More often

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How Vibration Works: The Importnce of Trending

by Alan Friedman Presented October 2009 at CMVA Introduction    Although it has been said many times, it can never be said enough, when it comes to vibration, trend, trend, trend! I cannot tell you how many times I have been asked a

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Dealing with a reduced maintenance staff

Dealing with a reduced maintenance staff Reliable Plant: Issue: 2/2009 The economic downturn is, or will soon, affect every one of us, which means we, once again, are going to be asked to do more with less. As maintenance departments

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Why PdM Programs Fail: Misuse of Technology

Why PdM Programs Fail:  Misuse of Technology by Alan Friedman Originally published here: http://reliabilityweb.com/index.php/articles/why_pdm_programs_fail_misuse_of_technology/ A very good mechanic knows that you need the right tool for the job, but a common problem with PdM programs is that sometimes people acquire

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Why PdM Programs Fail: Lack of Good Partnering

Why PdM Programs Fail: Lack of Good Partnering -Alan Friedman Many companies have failed to experience the 10:1, 20:1 or even 30:1 ROI promised with the adoption of a Predictive Maintenance (PdM) or Condition Monitoring (CM) program. In recent years,

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Why PdM Programs Fail: Personnel Issues

Why PdM Programs Fail:  Personnel Issues By Alan Friedman Many facilities and enterprises have failed to achieve the 10:1, 20:1 or even 30:1 Return on Investment (ROI) often promised with the introduction of a Predictive Maintenance (PdM) program.  Investments have

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Why do PdM Programs Fail?

Why do PdM Programs fail? Originally published here: http://reliabilityweb.com/index.php/articles/why_do_predictive_maintenance_programs_fail/#! by Alan Friedman In the past few years we have witnessed a marked change in predictive maintenance (PdM) practices whereby more and more companies are choosing to outsource their programs. While

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What to Look for in a Vibration Consultant

What to Look for in a Vibration Consultant By Alan Friedman The following provides an introduction to vibration analysis technology and methodology with a focus on what to look for in a vibration analysis consultant. Many corporations today are looking

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