Choose the maintenance strategy which gives maximum reward. Pdf predictive maintenance of pumps using condition. Cbm can drastically reduce operating costs and increase the safety of assets requiring maintenance. 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. Planned maintenance is preplanned, and can be date based, based on equipment running hours, or on distance travelled. Conditionbased maintenance cbm is a maintenance philosophy used by industry to actively manage the health condition of assets in order to perform. An evaluation of condition based maintenance for a military. Condition based maintenance allows preventive and corrective actions to be scheduled at the optimal time, thus reducing the total cost of ownership. Cbm is maintenance based on evidence of need, and rcm provides the rules of evidence.
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. This paper presents an overview of two maintenance techniques widely discussed in the literature. The portion of maintenance work hours that are performed at an overtime rate. This is the essential reference book for maintenance. 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. 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. Condition based maintenance cbm or predictive maintenance is a technology that strives. A general ruleofthumb is to set the intervals for inspection somewhere midway of the pf interval. The book focuses on the main condition monitoring techniques particularly relevant to pumps vibration analysis, performance analysis.
Condition based maintenance of electrical machines author. Run to failure rtf, and conditionbased maintenance cbm techniques to in. Pdf condition based maintenance byron ellis academia. Today, improvements in technology are making it easier to gather, store and analyze data for cbm. Perhaps we re finally turning a corner on the ageold firefighting mentality, replacing it with a more planned. 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. You will recall that preventive maintenance is time based. 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. Using condition maintenance can cause you to become a reactive organisation if you decide to rectify problems only after detecting impending failure. 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.
The purpose of this thesis is to evaluate the possibility implementing a condition based of maintenance cbm system the military vehicle cv9035in. For this reason, achieving costeffective plant maintenance is highly important. Jd edwards enterpriseone conditionbased maintenance cbm from oracle enables you to make maintenance decisions based on actual condition, rather than time or usage interval. 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. 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 n conditionbased maintenance cbm, shortly described, is maintenance when need arises. Conditionbased maintenance cbm, shortly described, is maintenance when need arises. We generally forget about the roof until it leaks on our computers, switchgear, tables. By contrast, condition based maintenance is not directly based on equipment age. 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.
This text attempts to present the fundamental justification for conditionbased maintenance together with enough analytic and practical guidance for its implementation. Time based maintenance, failure finding maintenance, risk based maintenance, condition based maintenance and predictive maintenance. Apply to maintenance engineer, process technician, chief engineer and more. Process for implementation of condition based maintenance. This maintenance is performed after one or more indicators show that equipment is going to. Introduction to maintenance engineering wiley online books. Again, using multiple monitoring points within the pf interval is even better and more advisable. Reliabilitycentered maintenance methodology reliabilitycentered maintenance rcm is the optimum mix of reactive, time or intervalbased, conditionbased, and proactive maintenance practices.
Predictive maintenance and conditionbased monitoring. The cbm philosophyit is about utilising the condition monitoring technologies topredict the failure patterns of an asset. The paper discusses how the tbm and cbm techniques work toward maintenance decision making. 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.
This text attempts to present the fundamental justification for conditionbased. Preventive maintenance is done before a failure occurs and consists of maintenance types like. 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. Predictive maintenance pdm monitors the performance and condition of equipment or systems to detecttrend degradation. Preventive maintenance pm, as scheduled maintenance tends to be called, doesnt prevent anything, navarro says. Infrastructure and configuration required to turn diagnostics into information. Pdf examples of condition based maintenance with the. Conditionbased maintenance and machine diagnostics j. You will recall that preventive maintenance is timebased.
Condition based maintenance strategy for equipment failure. Using commercialofftheshelf software and standards based applications, such tasks can be completed economically and provide exceptional addon value to the cmms installations. With predictive devices currently available, it is incumbent upon. Is a programme process manual that describes goals, roles, responsibilities, and process. Is a programmeprocess manual that describes goals, roles, responsibilities, and process. 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 cbm offers the promise of enhancing the effectiveness of maintenance programs in a way that no other single concept has ever matched. Six steps to conditionbased maintenance plant services. 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. There are 9 types of maintenance split between preventive maintenance and corrective maintenance. Pdf technical design of condition based maintenance system. Bleymaier director of logistics, engineering, and force protection headquarters, air mobility command. Reliabilitycentered maintenance methodology reliabilitycentered maintenance rcm is the optimum mix of reactive, time or interval based, condition based, and proactive maintenance practices. Conditionbased maintenance cbm is a maintenance strategy that monitors the actual condition of an asset to decide what maintenance needs to be done.
As it is normally used, pm minimizes downtime only. Conditionbased maintenance allows preventive and corrective actions to be scheduled at the optimal time, thus reducing the total cost of ownership. Implementation strategies and tools for condition based. Predictive maintenance of pumps using condition monitoring by raymond s. Jul 04, 2012 an introduction to condition based maintenance cbman approach to cbm application and management by. 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. This will allow maintenance to be scheduled based onequipment condition and not time.
Unfortunately it is a manual process to build a model and it is. Condition based maintenance plus dod guidebook dau. 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. Introduction to jd edwards enterpriseone conditionbased. He has run short courses for industry on various topics in technology management, operations management and postsale support in. 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. In manufacturing, its application has been somewhat muted. With predictive maintenance, organizations can identify issues before. This text attempts to present the fundamental justification for condition based. Condition based monitoring is an accepted feature of many industries. 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. 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. Conditionbased maintenance and machine diagnostics. An overview of timebased and conditionbased maintenance. How and why is this ability to detect and visualize an objects temperature proile. More competitive together reduce maintenance costs by standardized solutions and services within condition monitoring. Timedriven maintenance attempts to attain a predictive approach to. Condition based maintenance engineer jobs, employment. 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 maintenance cbm is a technology that strives to identify. 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. These principal maintenance strategies, rather than being applied independently, are integrated to take advantage of their re. Through the utilization of various nondestructive testing and measuring techniques, predictive maintenance determines equipment status before a breakdown occurs. Department of energys federal energy management program femp.
Or at least, the monitoring time must be shorter than the span of the pf interval. Inspection, testing and commissioning of electrical. For example, if an image indicated a difference between a pulley belt temperature. The mission of femp is to facilitate the federal governments implementation of sound, cost. Conditionbased maintenance of electrical machines author. 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. Based maintenance cbm deals with maintenance actions based on the condition or state of an item. Manual physical work supported by a static hand tool. An introduction to condition based maintenance cbman approach to cbm application and management by.
The portion of corrective maintenance work hours that are planned and scheduled in advance not unplanned breakdowns 85 95% % overtime. It focuses on responding to the root causes of machine or material failure, and dealing with those issues after problems occur. Recently, in order to reduce high maintenance costs and to increase operating ratio in manufacturing systems, conditionbased maintenance cbm has been developed. Reliabilitycentered maintenance methodology and application.
This publication collects and analyses proven condition based maintenance strategies and. You can identify equipment problems early, when they are less costly to correct, and perform maintenance only when needed, thereby increasing asset utilization, extending. Work order estimated bill of quantities actual labor plant materials procedure followed failure mode noted primary cause of failure memos impact on customers. For example, most people change the oil in their vehicles every 3,000 to. For example, most people change the oil in their vehicles every 3,000 to 5,000 miles traveled. The old adage out of sight, out of mind is particularly true when it applies to lat roof maintenance. Jd edwards enterpriseone condition based maintenance.
The complete conditionbased maintenance cbm guide fiix. Establishing a condition based maintenance program. Using commercialofftheshelf software and standardsbased applications, such tasks can be completed economically and provide exceptional addon value to the cmms installations. What type of equipment is available to the engineer and what does it do a full and candid appreciation of the shock pulse method.
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. Predictive maintenance is the intelligent health monitoring of equipment to avoid future equipment failure. Conditionbased monitoring is an accepted feature of many industries. Cbm was introduced in 1975 in order to maximise the effectiveness of pm decision making. One example of conditionbased maintenance is monitoring pressure readings on equipment with water systems. Conditionbased maintenance and machine diagnostics gives details of both offtheshelf solutions and analytic diagnostic techniques to enable a bespoke solution to be developed. He has authored or coauthored 20 book chapters, 165 journal papers and 150 conference papers. An overview of timebased and conditionbased maintenance in. This relatively new approach to maintenance uses data drawn during operations andor maintenance intervals to forecast the need for additional or future maintenance. 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. 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. In particular, cbm is highly effective where safety and reliability is the paramount concern such.
For more information for more information about realtime data via the opc communication standard, condition based maintenance or computerized maintenance. Conditionbased maintenance, which is predictive in nature, is part of conditionbased monitoring. Parts that have scheduled maintenance at fixed intervals, usually due to wearout or a fixed shelf life, are sometimes known as timechange. Book title popular one for rotating and reciprocal machinery is the vibration analysis.
Introduction to reliability centered maintenance rcm part 1. In contrast to preventive maintenance, which follows a set timeline, predictive maintenance schedules are determined by analytic algorithms and data from equipment sensors. Then, based upon this factual information foundation, reliability engineering begins. Conditionbased maintenance cbm southwest research institute. 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. Predictive maintenance of pumps using condition monitoring. Predictive maintenance is the complement of preventive maintenance.
765 549 102 581 865 1121 207 583 113 824 1491 929 786 943 967 1007 1390 1387 1515 464 1450 408 737 739 999 778 680 1341 308 833 1303 108 1294