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Articles

Accelerated Testing

A test method of increasing loads to quickly produce age-to-failure data with only a few data points which are then scaled to reflect normal loads.

Achieve World-Class Production Through Reliability

Alumax of South Carolina is an aluminum smelter that produces in excess of 180,000 MT of primary aluminum each year. It began operation in 1980 after a 2-year construction phase. The plant is the last greenfield aluminum smelter constructed in the U.S. Alumax of SC is a part of Alumax, Inc., which has headquarters in Norcross, Georgia; a suburb of Atlanta, Georgia. Alumax, Inc. is the third largest producer of primary aluminum in the U.S. and the fourth largest in North America.

Achieving a Higher Level of Maintenance and Reliability

By Augie DiGiovanni and John Renick

Progressive companies already implementing predictive maintenance are looking for proactive solutions to manage asset performance.

Adventures in Engineering Standards - Behind the Scenes of Creating IEEE Std 43-2000

by Howard W. Penrose, PhD, CMRP

Engineering can be a boring career with everyone working with known measurements and absolutes. There is never any doubt that the information contained in a standard or textbook is fact because everything is static, mathematical, and measurable. At least, that is what most people tend to think.

Adventures in Piping Analysis

A Variety of Tools Needed to Locate Problems
by Daniel T. Ambre, P.E.

This article is a vibration case history using Operating Deflection Shape (ODS), Experimental Modal Analysis (EMA) and Finite Element Analysis (FEA) tools and computer animation techniques to solve difficult rotating machinery problems.

Aerial Infrared – An Asset Management Tool for District Heating System Operators

Abstract

The imagery (IR) from aerial infrared thermal surveys of facilities, complexes, campuses, military bases and cities can be used for many purposes. Systems like supply steam and condensate return lines, hot water lines, chilled water lines, supply water mains, distribution piping, storm water drains and sewer lines can be monitored by looking at surface temperatures/patterns. In the case of district heating systems, the distribution system can be flown rapidly and inexpensively to provide thermal data for asset management planning and predictive maintenance (PdM). As a result of finding and repairing leaks in the steam system, energy usage can be reduced with all the related benefits.

After the Switchgear

ABSTRACT
The practical use of infrared thermography is, in a nutshell: looking at the thermal energy emitted from an object, explaining normality, seeing abnormalities and reporting them in a graphic, usable and easy-to-understand fashion, so that someone who is not familiar with the technology, can act to fix whatever is wrong. This works on heat emissions from all types of energy - not just electrical energy. There are many uses for infrared thermography other than inspecting electrical switchgear. In this paper I will discuss two of those other uses for infrared thermography.

 

Air Liquide Breaks Down Condition Monitoring Information Silos

Originally presented at Reliability 2.0

In an industry where it is not uncommon for companies to allow individual mills or plants to maintain their own autonomous condition monitoring operations, Air Liquide chose to go down a different path when it announced that it would partner with Azima DLI to manage all of its plants across the United States. The contract was one of the largest in the condition monitoring industry and indicates a growing trend for leading companies to instill consistency within their operations as opposed to allowing their own mills or plants to compete against each other.

An Introduction to PAS 55 – Optimal Management of Physical Assets

Asset Management goes well beyond the separate disciplines of engineering and maintenance.  It is a discipline that deals with the entire life cycle of our physical assets and until recently there was no widely accepted guideline or standard on what Asset Management was and was not. PAS 55 is a Publicly Available Specification (PAS) published by the British Standards Institution in 2004 now satisfies that demand. Since publication, PAS 55 has continuously increased in popularity both in the UK and around the world. It is now used as a framework outlining good management practices for many asset intensive industries around the world.

An Introduction to RCM

1 The Changing World of Maintenance

 Over the last twenty years, maintenance has changed, perhaps more so than any other management discipline. The changes are due to a huge increase in the number and variety of physical assets (plant, equipment and buildings) that must be maintained throughout the world, more complex designs, new maintenance techniques and changing views on maintenance organisation and responsibilities.

 

An Introduction to Time Waveform Analysis

In recent years there has been a resurgence in the use of time waveform analysis techniques. Condition monitoring personnel have now come to realize some of the limitations of the FFT process. Since many find the time waveform analysis process difficult and confusing the technique is rarely used to its full potential. The key to the successful utilization of time waveform data is knowing when to use it. This paper examines the limitations of the FFT process and identifies specific applications where enhancing FFT information with time waveform analysis is appropriate.

The paper also details in practical terms how to set up, acquire and manipulate time waveform data. Having discussed the acquisition of the data the paper continues to discuss the interpretation of the data including the time-frequency relationship, symmetry, and pattern recognition of common faults.

An Overview of Remote Machine Condition Assessment

by John Bernet

Fifty years ago, when labor costs were relatively low compared to operating expenses, managers found that they could simply use more staff to cover the increasing demands of maintaining plant machinery.

Analyzing and Quantifying Your Company Asset Management Opportunity

A methodical approach to measuring your company's current reliability profile and establishing your "Asset Management Opportunity" in dollars and cents for upper Management by James W. Davis, PE, SAMI 

APEX™ - Benchmarking Performance Culture

A typical Monday staff meeting; the coffee is cold and someone is droning on about how important it is to improve operations. Productivity is drooping and the charts on the wall look terrible. A benchmarking study is suggested and all agree that knowing where you stand relative to your competition is a great idea. You get assigned the task of pulling the numbers together for the comparative study. The meeting adjourns; you trek back to your office wondering where you will get the required data.

Applying Power Quality Measurements to Predictive Maintenance

You may already be using predictive maintenance (PdM) techniques on your motors and drives. But how often do you inspect the power to your equipment? By adding basic power quality measurements to production equipment maintenance procedures you can head off unexpected failures in both production equipment and your power system.

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