Predictive maintenance and conditionbased monitoring. For more information for more information about realtime data via the opc communication standard, condition based maintenance or computerized maintenance. This maintenance is performed after one or more indicators show that equipment is going to. Using commercialofftheshelf software and standards based applications, such tasks can be completed economically and provide exceptional addon value to the cmms installations. Predictive maintenance of pumps using condition monitoring by raymond s. Conditionbased maintenance cbm southwest research institute. Run to failure rtf, and conditionbased maintenance cbm techniques to in.
This text attempts to present the fundamental justification for conditionbased. Through the utilization of various nondestructive testing and measuring techniques, predictive maintenance determines equipment status before a breakdown occurs. Predictive maintenance is the intelligent health monitoring of equipment to avoid future equipment failure. Conditionbased maintenance and machine diagnostics j.
Conditionbased maintenance of electrical machines author. These principal maintenance strategies, rather than being applied independently, are integrated to take advantage of their re. Preventive maintenance pm, as scheduled maintenance tends to be called, doesnt prevent anything, navarro says. Condition based maintenance plus dod guidebook dau. Bleymaier director of logistics, engineering, and force protection headquarters, air mobility command. This relatively new approach to maintenance uses data drawn during operations andor maintenance intervals to forecast the need for additional or future maintenance. Pdf predictive maintenance of pumps using condition. Manual physical work supported by a static hand tool. Introduction to jd edwards enterpriseone conditionbased. Predictive maintenance of pumps using condition monitoring. Infrastructure and configuration required to turn diagnostics into information. Condition based maintenance of electrical machines author.
As it is normally used, pm minimizes downtime only. Introduction to maintenance engineering wiley online books. Is a programmeprocess manual that describes goals, roles, responsibilities, and process. Reliabilitycentered maintenance methodology reliabilitycentered maintenance rcm is the optimum mix of reactive, time or intervalbased, conditionbased, and proactive maintenance practices. An overview of timebased and conditionbased maintenance. He has authored or coauthored 20 book chapters, 165 journal papers and 150 conference papers. Timedriven maintenance attempts to attain a predictive approach to. Condition based maintenance cbm is a technology that strives to identify. This is the essential reference book for maintenance. Using condition maintenance can cause you to become a reactive organisation if you decide to rectify problems only after detecting impending failure.
Unfortunately it is a manual process to build a model and it is. Again, using multiple monitoring points within the pf interval is even better and more advisable. An overview of timebased and conditionbased maintenance in. Condition based maintenance cbm or predictive maintenance is a technology that strives. The mission of femp is to facilitate the federal governments implementation of sound, cost. Conditionbased maintenance and machine diagnostics gives details of both offtheshelf solutions and analytic diagnostic techniques to enable a bespoke solution to be developed. You will recall that preventive maintenance is time based. It focuses on responding to the root causes of machine or material failure, and dealing with those issues after problems occur. Planned maintenance is preplanned, and can be date based, based on equipment running hours, or on distance travelled. The book focuses on the main condition monitoring techniques particularly relevant to pumps vibration analysis, performance analysis. Pdf examples of condition based maintenance with the. This will allow maintenance to be scheduled based onequipment condition and not time.
For example, most people change the oil in their vehicles every 3,000 to 5,000 miles traveled. Condition based maintenance plus is the application and integration of appropriate processes, technologies, and knowledge based capabilities to achieve the target availability, reliability, and operation and support costs of dod systems and components across their life cycle. Jul 04, 2012 an introduction to condition based maintenance cbman approach to cbm application and management by. Preventive maintenance is done before a failure occurs and consists of maintenance types like. Reliabilitycentered maintenance methodology and application. Using commercialofftheshelf software and standardsbased applications, such tasks can be completed economically and provide exceptional addon value to the cmms installations. Conditionbased maintenance cbm, also known as predictive maintenanc e, is a maintenance practic e that derives maintenance req uirements, in large part, from r eal. Recently, in order to reduce high maintenance costs and to increase operating ratio in manufacturing systems, condition based maintenance cbm has been developed.
Condition based maintenance plus is the application and integration of appropriate processes, technologies, and knowledgebased capabilities to achieve the target availability, reliability, and operation and support costs of dod systems and components across their life cycle. The purpose of this book is to inform readers about techniques currently available in the field of condition monitoring, and the methodology used in their application. He has run short courses for industry on various topics in technology management, operations management and postsale support in. Condition based maintenance allows preventive and corrective actions to be scheduled at the optimal time, thus reducing the total cost of ownership. Apply to maintenance engineer, process technician, chief engineer and more. Now it is one of the most important components of condition based maintenance cbm, a practice of assessing a machines condition by periodically gathering data on. An evaluation of condition based maintenance for a military. Pdf technical design of condition based maintenance system. Reliabilitycentered maintenance methodology reliabilitycentered maintenance rcm is the optimum mix of reactive, time or interval based, condition based, and proactive maintenance practices. Then, based upon this factual information foundation, reliability engineering begins. Conditionbased maintenance cbm refers to a collection of activities, inspections, tests and procedures that are performed in response to the failure or destabilization of equipment, a machine or a material. Choose the maintenance strategy which gives maximum reward.
In contrast to preventive maintenance, which follows a set timeline, predictive maintenance schedules are determined by analytic algorithms and data from equipment sensors. Conditionbased maintenance cbm is a maintenance philosophy used by industry to actively manage the health condition of assets in order to perform. Conditionbased maintenance, which is predictive in nature, is part of conditionbased monitoring. Time based maintenance, failure finding maintenance, risk based maintenance, condition based maintenance and predictive maintenance.
The portion of corrective maintenance work hours that are planned and scheduled in advance not unplanned breakdowns 85 95% % overtime. The paper discusses how the tbm and cbm techniques work toward maintenance decision making. How and why is this ability to detect and visualize an objects temperature proile. Condition based maintenance cbm is a maintenance philosophy used by industry to actively manage the health condition of assets in order to perform maintenance only when it is needed and at the most opportune times. Handbook of condition monitoring techniques and methodology. Book title popular one for rotating and reciprocal machinery is the vibration analysis. In particular, cbm is highly effective where safety and reliability is the paramount concern such. You can identify equipment problems early, when they are less costly to correct, and perform maintenance only when needed, thereby increasing asset utilization, extending. Conditionbased maintenance cbm is a maintenance philosophy used by industry to actively manage the health condition of assets in order to perform maintenance only when it is needed and at the most opportune times. Predictive maintenance is the complement of preventive maintenance.
This publication collects and analyses proven condition based maintenance strategies and. Cbm is maintenance based on evidence of need, and rcm provides the rules of evidence. Early on a distinction is made between an extended condition based maintenance system and one of its constituentparts, trending, where the main focus of this thesis lies. The cbm philosophyit is about utilising the condition monitoring technologies topredict the failure patterns of an asset.
Preventive and predictive maintenance 700zb00102 42 preventivepredictive maintenance the guiding principle of ppm is the regular and systematic application of engineering knowledge and maintenance attention to equipment and facilities to ensure their proper functionality and to reduce their rate of deterioration. Condition based maintenance n conditionbased maintenance cbm, shortly described, is maintenance when need arises. This text attempts to present the fundamental justification for conditionbased maintenance together with enough analytic and practical guidance for its implementation. Six steps to conditionbased maintenance plant services. What type of equipment is available to the engineer and what does it do a full and candid appreciation of the shock pulse method. Jd edwards enterpriseone condition based maintenance. Jd edwards enterpriseone conditionbased maintenance cbm from oracle enables you to make maintenance decisions based on actual condition, rather than time or usage interval. Jun 23, 2017 condition based maintenance cbm is a maintenance strategy which, simply put, measures operational parameters in assets to determine a change in their condition, performing maintenance only when the need arises. A general ruleofthumb is to set the intervals for inspection somewhere midway of the pf interval. Parts that have scheduled maintenance at fixed intervals, usually due to wearout or a fixed shelf life, are sometimes known as timechange. With predictive devices currently available, it is incumbent upon. More competitive together reduce maintenance costs by standardized solutions and services within condition monitoring. Or at least, the monitoring time must be shorter than the span of the pf interval.
Six steps to conditionbased maintenance an exciting trend in the world of cmms is the increasing sophistication of conditionbased maintenance cbm features and functions vendors offer and maintenance professionals actually use. The purpose of this thesis is to evaluate the possibility implementing a condition based of maintenance cbm system the military vehicle cv9035in. Many times it is economically more sensible simply to use time based maintenance and not care about condition because it is the more cost effective option in the circumstances. Conditionbased maintenance allows preventive and corrective actions to be scheduled at the optimal time, thus reducing the total cost of ownership. You will recall that preventive maintenance is timebased. Recently, in order to reduce high maintenance costs and to increase operating ratio in manufacturing systems, conditionbased maintenance cbm has been developed. Albeit chronologically much older, it is considered one section or practice inside the broader and newer predictive maintenance field, where new ai technologies and connectivity abilities are put to action and where the acronym. Condition based monitoring is an accepted feature of many industries. Condition based maintenance cbm offers the promise of enhancing the effectiveness of maintenance programs in a way that no other single concept has ever matched. Conditionbased monitoring is an accepted feature of many industries. Cbm dictates that maintenance should only be performed when certain indicators show signs of decreasing performance or upcoming failure. Learn how to calculate maintenance kpis for better maintenance management. The complete conditionbased maintenance cbm guide fiix. Establishing a condition based maintenance program.
Process for implementation of condition based maintenance. Condition based maintenance cbm is a maintenance strategy which, simply put, measures operational parameters in assets to determine a change in their condition, performing maintenance only when the need arises. Condition based maintenance strategy for equipment failure. Reactive maintenance run to failurebased when it breaks, fix it preventive maintenance timebased prevent failures with regular maintenance predictive maintenance conditionbased monitor for out of tolerance today, maintenance is expected to contribute to the strategic goals. This paper deals with the philosophy and commitment of condition based maintenance and the reasons why, whats in it for me what are the costs. The portion of maintenance work hours that are performed at an overtime rate. Cbm can drastically reduce operating costs and increase the safety of assets requiring maintenance. Department of energys federal energy management program femp. This book shows how condition monitoring can be applied to detect internal degradation in pumps so that appropriate maintenance can be decided upon based on actual condition rather than arbitrary time scales. Work order estimated bill of quantities actual labor plant materials procedure followed failure mode noted primary cause of failure memos impact on customers. For this reason, achieving costeffective plant maintenance is highly important.
This book shows how condition monitoring can be applied to detect internal degradation in pumps so that appropriate maintenance can be decided upon based on actual condition rather than an arbitrary time scales. Implementation strategies and tools for condition based. One example of conditionbased maintenance is monitoring pressure readings on equipment with water systems. Conditionbased maintenance cbm is a maintenance strategy that monitors the actual condition of an asset to decide what maintenance needs to be done. In manufacturing, its application has been somewhat muted. Today, improvements in technology are making it easier to gather, store and analyze data for cbm. Conditionbased maintenance cbm conditionbased maintenance, also known as predictive maintenance is the most modern and popular maintenance technique discussed in the literature dieulle et al. Conditionbased maintenance cbm, also known as predictive maintenance, is a maintenance practice that derives maintenance requirements, in large part, from realtime assessment of platform or weapon system condition obtained from embedded sensors andor external tests and measurements using builtin diagnostic equipment. Conditionbased maintenance cbm, shortly described, is maintenance when need arises. The state of the item characterizes the level of degradation due to some degradation mechanism that depends on the physical characteristics, operating environment and operating load. Condition based maintenance cbm refers to a collection of activities, inspections, tests and procedures that are performed in response to the failure or destabilization of equipment, a machine or a material. We generally forget about the roof until it leaks on our computers, switchgear, tables. Examples of condition based maintenance with the vibration management enhancement program conference paper pdf available june 2005 with 1,682 reads how we measure reads.
For example, most people change the oil in their vehicles every 3,000 to. Inspection, testing and commissioning of electrical. Based maintenance cbm deals with maintenance actions based on the condition or state of an item. An introduction to condition based maintenance cbman approach to cbm application and management by. Pdf condition based maintenance byron ellis academia. The old adage out of sight, out of mind is particularly true when it applies to lat roof maintenance. Inservice oil analysis for condition based maintenance 7 the practice of inservice oil analysis or used oil analysis started over a century ago on locomotive engines. Cbm was introduced in 1975 in order to maximise the effectiveness of pm decision making. Introduction to reliability centered maintenance rcm part 1. Is a programme process manual that describes goals, roles, responsibilities, and process.
Predictive maintenance pdm monitors the performance and condition of equipment or systems to detecttrend degradation. With predictive maintenance, organizations can identify issues before. This paper presents an overview of two maintenance techniques widely discussed in the literature. For example, if an image indicated a difference between a pulley belt temperature. This text attempts to present the fundamental justification for condition based. By contrast, condition based maintenance is not directly based on equipment age. Conditionbased maintenance and machine diagnostics. Condition based maintenance engineer jobs, employment. Perhaps we re finally turning a corner on the ageold firefighting mentality, replacing it with a more planned.
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