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. Pdf examples of condition based maintenance with the. One example of conditionbased maintenance is monitoring pressure readings on equipment with water systems. This paper presents an overview of two maintenance techniques widely discussed in the literature. Cbm can drastically reduce operating costs and increase the safety of assets requiring maintenance.
The paper discusses how the tbm and cbm techniques work toward maintenance decision making. Apply to maintenance engineer, process technician, chief engineer and more. Unfortunately it is a manual process to build a model and it is. 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. Pdf condition based maintenance byron ellis academia. Cbm dictates that maintenance should only be performed when certain indicators show signs of decreasing performance or upcoming failure.
Conditionbased maintenance cbm is a maintenance philosophy used by industry to actively manage the health condition of assets in order to perform. Infrastructure and configuration required to turn diagnostics into information. Conditionbased maintenance of electrical machines author. Based maintenance cbm deals with maintenance actions based on the condition or state of an item. 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. This will allow maintenance to be scheduled based onequipment condition and not time. Conditionbased maintenance, which is predictive in nature, is part of conditionbased monitoring. This text attempts to present the fundamental justification for conditionbased. Conditionbased maintenance and machine diagnostics j. Condition based maintenance n conditionbased maintenance cbm, shortly described, is maintenance when need arises. Is a programmeprocess manual that describes goals, roles, responsibilities, and process. Predictive maintenance of pumps using condition monitoring. This maintenance is performed after one or more indicators show that equipment is going to. Department of energys federal energy management program femp.
Handbook of condition monitoring techniques and methodology. 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. 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. For example, if an image indicated a difference between a pulley belt temperature. The old adage out of sight, out of mind is particularly true when it applies to lat roof maintenance. Choose the maintenance strategy which gives maximum reward. How and why is this ability to detect and visualize an objects temperature proile. As it is normally used, pm minimizes downtime only. Using commercialofftheshelf software and standards based applications, such tasks can be completed economically and provide exceptional addon value to the cmms installations. The purpose of this thesis is to evaluate the possibility implementing a condition based of maintenance cbm system the military vehicle cv9035in. An overview of timebased and conditionbased maintenance in.
A general ruleofthumb is to set the intervals for inspection somewhere midway of the pf interval. 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. Or at least, the monitoring time must be shorter than the span of the pf interval. An introduction to condition based maintenance cbman approach to cbm application and management by. By contrast, condition based maintenance is not directly based on equipment age. Conditionbased maintenance cbm, shortly described, is maintenance when need arises. He has run short courses for industry on various topics in technology management, operations management and postsale support in. For example, most people change the oil in their vehicles every 3,000 to 5,000 miles traveled. Reliabilitycentered maintenance methodology reliabilitycentered maintenance rcm is the optimum mix of reactive, time or intervalbased, conditionbased, and proactive maintenance practices. With predictive devices currently available, it is incumbent upon. Preventive maintenance pm, as scheduled maintenance tends to be called, doesnt prevent anything, navarro says. Using condition maintenance can cause you to become a reactive organisation if you decide to rectify problems only after detecting impending failure. You can identify equipment problems early, when they are less costly to correct, and perform maintenance only when needed, thereby increasing asset utilization, extending. There are 9 types of maintenance split between preventive maintenance and corrective maintenance.
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. Again, using multiple monitoring points within the pf interval is even better and more advisable. This publication collects and analyses proven condition based maintenance strategies and. 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. Jd edwards enterpriseone conditionbased maintenance cbm from oracle enables you to make maintenance decisions based on actual condition, rather than time or usage interval. For this reason, achieving costeffective plant maintenance is highly important. This text attempts to present the fundamental justification for conditionbased maintenance together with enough analytic and practical guidance for its implementation. The portion of corrective maintenance work hours that are planned and scheduled in advance not unplanned breakdowns 85 95% % overtime. Condition based maintenance plus dod guidebook dau. 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. Predictive maintenance is the intelligent health monitoring of equipment to avoid future equipment failure. The book focuses on the main condition monitoring techniques particularly relevant to pumps vibration analysis, performance analysis. Recently, in order to reduce high maintenance costs and to increase operating ratio in manufacturing systems, condition based maintenance cbm has been developed.
Cbm is maintenance based on evidence of need, and rcm provides the rules of evidence. Reliabilitycentered maintenance methodology and application. 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. Today, improvements in technology are making it easier to gather, store and analyze data for cbm.
For example, most people change the oil in their vehicles every 3,000 to. Introduction to maintenance engineering wiley online books. The complete conditionbased maintenance cbm guide fiix. 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. We generally forget about the roof until it leaks on our computers, switchgear, tables. More competitive together reduce maintenance costs by standardized solutions and services within condition monitoring. Jul 04, 2012 an introduction to condition based maintenance cbman approach to cbm application and management by.
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. These principal maintenance strategies, rather than being applied independently, are integrated to take advantage of their re. In contrast to preventive maintenance, which follows a set timeline, predictive maintenance schedules are determined by analytic algorithms and data from equipment sensors. The portion of maintenance work hours that are performed at an overtime rate. Recently, in order to reduce high maintenance costs and to increase operating ratio in manufacturing systems, conditionbased maintenance cbm has been developed. In manufacturing, its application has been somewhat muted.
The mission of femp is to facilitate the federal governments implementation of sound, cost. An overview of timebased and conditionbased maintenance. Predictive maintenance and conditionbased monitoring. In particular, cbm is highly effective where safety and reliability is the paramount concern such. Jd edwards enterpriseone condition based maintenance. Implementation strategies and tools for condition based. Condition based maintenance cbm is a technology that strives to identify. 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. Time based maintenance, failure finding maintenance, risk based maintenance, condition based maintenance and predictive maintenance.
What type of equipment is available to the engineer and what does it do a full and candid appreciation of the shock pulse method. Through the utilization of various nondestructive testing and measuring techniques, predictive maintenance determines equipment status before a breakdown occurs. Condition based maintenance strategy for equipment failure. Work order estimated bill of quantities actual labor plant materials procedure followed failure mode noted primary cause of failure memos impact on customers. Conditionbased maintenance and machine diagnostics. Run to failure rtf, and conditionbased maintenance cbm techniques to in. It focuses on responding to the root causes of machine or material failure, and dealing with those issues after problems occur.
Condition based maintenance engineer jobs, employment. Using commercialofftheshelf software and standardsbased applications, such tasks can be completed economically and provide exceptional addon value to the cmms installations. 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. Predictive maintenance pdm monitors the performance and condition of equipment or systems to detecttrend degradation. You will recall that preventive maintenance is timebased. Pdf predictive maintenance of pumps using condition. Preventive maintenance is done before a failure occurs and consists of maintenance types like. 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. Condition based maintenance cbm or predictive maintenance is a technology that strives.
Pdf technical design of condition based maintenance system. Conditionbased maintenance and machine diagnostics gives details of both offtheshelf solutions and analytic diagnostic techniques to enable a bespoke solution to be developed. Six steps to conditionbased maintenance plant services. Reliabilitycentered maintenance methodology reliabilitycentered maintenance rcm is the optimum mix of reactive, time or interval based, condition based, and proactive maintenance practices. 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. Timedriven maintenance attempts to attain a predictive approach to. The cbm philosophyit is about utilising the condition monitoring technologies topredict the failure patterns of an asset. 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. Condition based maintenance allows preventive and corrective actions to be scheduled at the optimal time, thus reducing the total cost of ownership. 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.
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. He has authored or coauthored 20 book chapters, 165 journal papers and 150 conference papers. 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. Introduction to jd edwards enterpriseone conditionbased. 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. This text attempts to present the fundamental justification for condition based. Conditionbased maintenance allows preventive and corrective actions to be scheduled at the optimal time, thus reducing the total cost of ownership.
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. This relatively new approach to maintenance uses data drawn during operations andor maintenance intervals to forecast the need for additional or future maintenance. With predictive maintenance, organizations can identify issues before. Predictive maintenance of pumps using condition monitoring by raymond s. 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. An evaluation of condition based maintenance for a military. Conditionbased maintenance cbm is a maintenance strategy that monitors the actual condition of an asset to decide what maintenance needs to be done. 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.
Process for implementation of condition based maintenance. Conditionbased maintenance cbm southwest research institute. Condition based monitoring is an accepted feature of many industries. Bleymaier director of logistics, engineering, and force protection headquarters, air mobility command. Learn how to calculate maintenance kpis for better maintenance management. Cbm was introduced in 1975 in order to maximise the effectiveness of pm decision making. Inspection, testing and commissioning of electrical. Is a programme process manual that describes goals, roles, responsibilities, and process. Manual physical work supported by a static hand tool. 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. Introduction to reliability centered maintenance rcm part 1.
Perhaps we re finally turning a corner on the ageold firefighting mentality, replacing it with a more planned. Predictive maintenance is the complement of preventive maintenance. 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. Condition based maintenance of electrical machines author.
This is the essential reference book for maintenance. Parts that have scheduled maintenance at fixed intervals, usually due to wearout or a fixed shelf life, are sometimes known as timechange. Establishing a condition based maintenance program. You will recall that preventive maintenance is time based. Book title popular one for rotating and reciprocal machinery is the vibration analysis. Conditionbased monitoring is an accepted feature of many industries.
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