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asset condition management

Asset Condition Management

Consejo de Análisis de Vibración

Al verificar una resonancia irregular en un ventilador que no podía ser apagado, utilice una luz estroboscópica y apunte desde un filtro sintonizable a la frecuencia sospechosa.

Desafortunadamente

Asset Condition Management

The Case For Aerial Infrared

FORWARD



Infrared thermography has become a very popular means of testing electrical and mechanical systems over the past fifteen years. As it relates to predictive/preventive maintenance (P/PM), infrared thermographers look at the thermal energy that is emitted from an object or group of objects, explain what is normal, see abnormalities and report them. In turn, someone can act to fix whatever is wrong as long as they get the information in a usable, graphic and easy-to-understand fashion. This method works well on heat emissions from most objects, including building roofs. A well-prepared, graphic and accurate map of the infrared signatures of a roof can be of significant benefit to the roof consultant at all stages of that roof's service life. This type of testing is commonly referred to as an infrared roof moisture survey. Infrared thermography is not leak management, it is predictive maintenance. No matter how the water got into the substrate, the purpose of this type of survey is simply to find and document where the water is. Performing infrared roof moisture surveys while standing on the roof is not the best method because imagery from a walk-on survey is not as useful as aerial imagery.

 

Asset Condition Management

Thermographic Evaluation of Concrete Masonry Walls: Have They Been Properly Reinforced?

ABSTRACT


Infrared thermographers literally walk by more work than they can do. The world is one big radiator, and new, non-traditional applications for infrared thermography are being found every day.

This paper discusses one of these non-traditional applications; specifically, the use of infrared thermography to find whether or not concrete reinforcing (grouting) has been properly placed in Concrete Masonry Unit (CMU) or 'block' walls. These walls are being erected everywhere. They are used to build discount stores and shopping centers, schools and buildings of every size and shape. They are almost never built exactly to specifications, and by using infrared thermography it is possible to see and report the faults in the walls, so that timely repairs can be accomplished.

This paper discusses the development of the technique that we use to image and evaluate these building walls successfully, and to make usable reports of our findings. I also discuss some market factors for infrared on buildings in general.

Asset Condition Management

Beyond the Usual Applications for Infrared Thermography

Introduction To Infrared Thermography

Think of the world as a radiator...infrared thermographers do. Thermal energy travels at the speed of light in all directions. An infrared (IR) camera detects this [heat] energy and converts it into pictures or thermographs of heat. One can learn a lot about the world by looking through the lens of an infrared camera.

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Asset Condition Management

Infrared (IR) Thermography for Building Managers

Think back to the 1990s. How important was building energy efficiency, building moisture or building quality? Now think about the past 6 months....has your boss asked you to study your energy usage? Thinking "green" has become in vogue. Why is that? Is it because your boss recently downloaded "An Inconvenient Truth" and Al Gore convinced him or her that global warming is real and something must be done about it? No "green" thinking is about "green-backs". Building costs and energy costs are on the rise and by inspecting a building with IR and other techniques, the owner can determine what needs to be done to manage the building asset better, use less energy and save money.

Asset Condition Management

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.

Asset Condition Management

Arc-Flash Protection - Understanding NFPA 70E

By John C. Klingler, P.E. Lewellyn Technology

Note: John presented a short course on this subject at IMC-2005 December 6-9, 2005 in Tampa

You have decided to conform to the requirements of NFPA 70E, the standard for Electrical Safety in the Workplace. You already have an electrical program for preventing shock; here is an explanation of how to address the 70E requirements for arc-flash.

Asset Condition Management

Viewing Corona in the Daytime

By Lee Harrison

The Corona Story in Brief

The presence of corona activity is a good indication of trouble with nonceramic insulators and other transmission line equipment. But since corona radiates in the ultraviolet region of the light spectrum, it is invisible to the naked eye, and conventional corona cameras are ineffective in daylight because sunshine drowns out the corona's image. Responding to the need for better technology, EPRI researchers and engineers from Ofil Ltd. developed the DayCor daytime corona camera, which features bispectral imaging for effective use in daylight. This breakthrough camera, which has already been successfully field-tested on utility transmission systems, will enable utilities to perform comprehensive airborne inspections safely and economically.

Asset Condition Management

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.

 

Asset Condition Management

Evaluating Winding Connections With Infrared

Introduction

An area that is often overlooked in the rewinding of an electric motor are the internal connections of the winding. Most coils have multiple wires making up one ‘conductor' (Figure 1). The reason for this is to allow the wire to be more flexible for installation while allowing enough cross section for the amount of current that the conductor must carry. This generates a situation where improper brazing, crimping or other methods of making the connections will generate a hot-spot due to IR losses.

asset condition management

Increasing Accuracy in Lubrication Testing

By Anne Spano, Applied Industrial Technologies

Creating ideal conditions for lubricant sampling will help eliminate misleading results.

Asset Condition Management

Interview with an Arc Flash Survivor

On August 16th, 2007 Bill Giffen was involved in an Arc Flash incident with a 13,800 Volt Switch. He received 3rd degree burns to his left leg and 2nd degree burns to his arm, back and groin area

asset condition management

Electric Motor Bearing Greasing Basics

One of the most important components of any electro-mechanical maintenance program is the lubrication of bearings. Yet, this vital aspect of preventive maintenance remains one of the least understood functions of maintenance. There is constant debate concerning whether a bearing should be ‘flushed,' a limited amount of grease added, how often or if the motor should be operating or tagged-out. Many motor manufactures outline the preferred, and safest, method for lubricating electric motor bearings. There are specific physical properties for this process in the motor bearing housing and in order to protect motor windings from contamination.

asset condition management

Benchmarking Your Lubrication Program against a ‘Best Practice’: Part 3 - Lubricant Selection

Click here to participate in the online benchmarking survey.

Several different types of activities should figure into a complete machine lubrication practice. One should keep in mind, though, that all machines don't require all the possible activities. There is room to debate whether a specific practice is needed to preserve adequate reliability for a specific machine. The more subjective the function, the louder the debate could become. Sump filtration is one of those types of activities. Arguments could be made for or against filtration, based on the needs of the plant at the time the practice is being considered.

asset condition management

Benchmarking Your Lubrication Program against a ‘Best Practice’: Part 2 -  Lubricant Delivery

by Mike Johnson, CMRP, AMRRI

 

Part 2 - Lubricant Delivery, Storage and In-Plant Handling

Click here to participate in the online benchmarking survey.

Lubricant Delivery, Storage and In-Plant Handling

 

asset condition management

Benchmarking Your Lubrication Program against a ‘Best Practice’: Part 1 - Selecting a Vendor

By Mike Johnson, CMRP, AMRRI

Part 1 - Selecting a Vendor

Click here to participate in the online benchmarking survey.
This article introduces the first step of the survey for your consideration.

 

asset condition management

Benchmarking Your Lubrication Program against a ‘Best Practice’

BY: Mike Johnson, CMRP, AMRRIIs your lubrication program really as good as you think it is?

Is it good enough?

Does it enhance or degrade your reliability effort?

How do you know?

asset condition management

A Proven Electric Motor Regreasing Program

By Jerry S. Honeycutt, Tennessee Valley Authority

One of the most asked questions of grease lubricated motors is, what is the correct interval to regrease the bearings? This is usually followed by two questions, 1) how much grease should be added? and 2) what is the correct method for grease addition?

asset condition management

Grease-ology

By Kristopher Sonne, Trico Corporation

Grease selection is an important yet often overlooked part of many plant lubrication programs. It is common for plants to have in stock one coupling grease, one motor grease and one general purpose grease for everything else. The general purpose grease may be the proper grease for some applications but definitely not all. Selecting greases should be given the same care as selecting oil and not treated like the black sheep of the lubrication family.

asset condition management

Field Balancing Standards - How Good Is Good Enough?

By Victor Wowk, P.E.

Historically, 1.0-mil peak-to-peak displacement has been quoted by many field balancers as the desired goal. This is a good number to strive for, but may be overbalancing in some cases. The 1.0 mil came from balancing rebuilt motors on a soft-bearing balancing machine with velocity transducers integrated to displacement. The 1.0 was an easy number to remember and the vibration was barely perceptible. The shop balancer then applied this same 1.0 mil when taking his instruments out to a field balance job.

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