Recently, in order to reduce high maintenance costs and to increase operating ratio in manufacturing systems, condition based maintenance cbm has been developed. Preventive maintenance of switchboards is typically carried out as a part of a routine shut down in process. An evaluation of condition based maintenance for a military. Process for implementation of condition based maintenance. An overview of timebased and conditionbased maintenance in. Prognostics and health management phm condition based. Using condition maintenance can cause you to become a reactive organisation if you decide to rectify problems only after detecting impending failure. Introduction to maintenance engineering wiley online books. However, due to the uncertainty of prognostics, there are certain risks in the maintenance decisions based on the prediction of rul 2, 3.
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. The incorporation of condition assessments as part of maintenance processes ensures that there is a structured, objective process for identifying the demand for conditionbased maintenance works to meet strategic and operational priorities. As it is normally used, pm minimizes downtime only. This type of maintenance policy and strategy will improve performance. Condition based maintenance strategy for equipment failure. 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. 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.
An optimization method for condition based maintenance of. Six steps to conditionbased maintenance plant services. 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. Pdf examples of condition based maintenance with the. You will recall that preventive maintenance is timebased. Maintenance procedures are to be developed and performed in accordance with cbm. The cbm philosophyit is about utilising the condition monitoring technologies topredict the failure patterns of an asset.
This publication collects and analyses proven condition based maintenance strategies and. Using commercialofftheshelf software and standards based applications, such tasks can be completed economically and provide exceptional addon value to the cmms installations. Through the utilization of various nondestructive testing and measuring techniques, predictive maintenance determines equipment status before a breakdown occurs. Conditionbased maintenance, which is predictive in nature, is part of conditionbased monitoring. His research interests are in the areas of production planning and scheduling, maintenance, quality control, supply chain management, and risk management in. Point p is the point at which the defect enters the system and is detectable. Pdf condition based maintenance byron ellis academia. Maintenance, although requiring the expenditure of significant amounts of energy, is usually required in order to keep or restore facilities at an acceptable operational standard 1. According to the standard the approaches to maintenance can be categorised as presented in fig. Maintenance of assembly and manufacturing equipment is crucial to ensure.
Implementation strategies and tools for condition based. By combining these technological advances with the existing systems for vibration analysis, we have developed a maintenance management program based on the health condition of the components rather than timedriven inspections and replacements. Conditionbased maintenance is the practice of conducting maintenance on a machine when the assets condition reaches a disruptive level. In a meeting with a maintenance services supplier, a utilitys maintenance manager described the scenario of his wife and. Jul 04, 2012 an introduction to condition based maintenance cbman approach to cbm application and management by. Thus, many automated monitoring systems provide a way for manual override for configurable parts of their functionality. A riskbased methodology for establishing and managing.
Choose the maintenance strategy which gives maximum reward. Prognostics and health management phm condition based maintenance cbm dennis hoffman email. This maintenance is performed after one or more indicators show that equipment is going to. F o u n d a t i o n page 3 of 9 condition based operations for manufacturing october 6, 2004 the result of these lurking threats is that when a production schedule is issued the likelihood, or confidence in meeting it, decreases as ones looks further into the future. Reliabilitycentered maintenance methodology reliabilitycentered maintenance rcm is the optimum mix of reactive, time or intervalbased, conditionbased, and proactive maintenance practices. Condition based maintenance in the manufacturing industry diva. On condition based maintenance policy sciencedirect. Reliabilitycentered maintenance methodology and application.
For more information for more information about realtime data via the opc communication standard, condition based maintenance or computerized maintenance. Condition based monitoring is an accepted feature of many industries. Standard en 306cen, 2001 defines predictive maintenance as condition based maintenance carried out following a forecast derived from the analysis and evaluation of significant parameters of the degradation of the item. Maintenance, and has beco me the report upon which all subsequent reliability centered maintenance approaches have been based. 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. Abstractconditionbased maintenance cbm decisionmaking methods. Shore file csmp shore file 2k pull push s c r e e n b r o k e r 2k waterfront maintenance team library of specs e. This example kit contains an xml file for a pi af database with templates, an example hierarchy, and configuration for demo data. It gives us new challenging issues for improving the efficiency of asset operations. Retaining a contractor it is important for building owners to retain a professional roofing contractor preferably the contractor that installed the system to perform roof maintenance. Conference of condition monitoring and diagnostic engineering management.
Predictive maintenance and conditionbased monitoring. One issue is to implement the conditionbased maintenance cbm approach. Preventive maintenance pm, as scheduled maintenance tends to be called, doesnt prevent anything, navarro says. A riskbased methodology for establishing and managing backlog 4 costing for estates assets to reach condition b backlog maintenance costs and repair costs key players survey team condition ranking on a block basis for internal subelements and site basis for external subelements key players survey team leader estates manager. Development of condition based maintenance for coal. Cbm can drastically reduce operating costs and increase the safety of assets requir ing maintenance. What mrs nowlan and heap found was many types of failures could not be prevented no matter how intensive the maintenance activities. Since that date, updates have been made periodically with the most. Conditionbased maintenance cbm southwest research institute. Cbm is a set of maintenance actions based on the realtime or near realtime assessment of equipment conditions. For example, most people change the oil in their vehicles every 3,000 to.
Condition based maintenance n conditionbased maintenance cbm, shortly described, is maintenance when need arises. Pdf on condition based maintenance policy researchgate. Point f is the point at which the defect has created a functional failure. The incorporation of condition assessments as part of maintenance processes ensures that there is a structured, objective process for identifying the demand for condition based maintenance works to meet strategic and operational priorities. The comprehensive based technique also known as maintenance concept development, which can be defined as a set of various maintenance interventions experience based, time based, condition based, etc. Conditionbased diagnostic approach for predicting the. 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. To provide highest value and minimized effort of maintenance to customers, different maintenance practices from reactive in case of sudden failure to conditionbased are applied. The combination of corrective preventative and condition based maintenance will required to apply for critical equipments. The purpose of this thesis is to evaluate the possibility implementing a condition based of maintenance cbm system the military vehicle cv9035in. One issue is to implement the conditionbased maintenance cbm approach that makes a diagnosis of the asset status based on wire or wireless monitored data.
Condition assessments are an important aspect of effective maintenance planning. Within maintenance, conditionbased maintenance cbm programs can provide. Cbm is theory used in the industry and government to actively monitor the health of the components or system in order to optimize operating costs and determine maintenance needs. He received his phd in operations research from georgia institute of technology, usa. 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. Predictive maintenance is the complement of preventive maintenance. 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 also known as cbm is a maintenance methodology in which maintenance operations are performed depending on the current condition of your assets. Cbm systems help maintainers to detect and manage the condition of aviation system components and take maintenance actions when there is evidence of need. This white paper summarizes a fourstep process for successfully making that transition. With predictive devices currently available, it is incumbent upon. More competitive together reduce maintenance costs by standardized solutions and services within condition monitoring. You will recall that preventive maintenance is time based. Condition based maintenance cbm, shortly described, is maintenance when need arises.
Diagnostics is the process of determining the state ability of an item to perform its functions prognostics is predictive diagnostics which includes determining the remaining life or. In this paper we describe the application of a software. Condition based maintenance takes advantage of technology developments in the areas of machinery monitoring, signal processing and fault modeling to reduce the cost of ownership through improved. Condition based maintenance and condition monitoring. Learn how assetbased pi tools have been used to implement a simple example of conditionbased maintenance for pumps, looking at a usagebased indicator and a comparisonbased indicator. In manufacturing, its application has been somewhat muted. It focuses on responding to the root causes of machine or material failure, and dealing with those issues after problems occur. Implementation of modern concept of condition based maintenance can appreciably reduce maintenance costs and enhance reliability of machine performance.
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. The pf curve figure 2 is an artists version of the fault progression of a defect. Condition based, diagnostic model, predictive maintenance, machinery, centrifugal pumps. This document focuses on the use of cbo in process industries to enable more economically efficient production. As the machine communicates its condition, the data is saved within a computerized maintenance management system cmms in a way that is easily read by humans. Facilities instructions, standards, and techniques volume.
This paper presents the approach of conditionbased maintenance using realtime sensor monitoring, telematics and predictive data analytics. 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 is the process of monitoring the condition of an asset and taking an action to avoid the consequences of a failure. Pmp003, valuebased maintenance summary of efficiency opportunity desired endstatestations fully implement valuebased maintenance and the associated culture change to appropriately optimize safety and reliability through the most efficient utilization of maintenance. Guide for survey based on preventative maintenance techniques. Taking the first steps toward conditionbased maintenance. Cbm is maintenance based on evidence of need, and rcm provides the rules of evidence. The file should be kept with the building when sold and purchased it provides considerable information for prepurchase and condition surveys of the property. Many of them are making the transition to a conditionbased maintenance strategy.
Pdf an effective condition based maintenance regime requires a good understanding of asset criticality. Condition based maintenance engineer jobs, employment. In particular, cbm is highly effective where safety and reliability is the paramount concern such. 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.
This relatively new approach to maintenance uses data drawn during operations andor maintenance intervals to forecast the need for additional or future maintenance. Pdf reliability centered maintenance rcm is a process used to determine the maintenance requirements of any physical asset in its operating context. Ellis consultant and executive director of the jethro project, tjp, email. The management of navy facilities using condition based maintenance management cbmm strategies and the sustainment of facilities through maintenance and repair services.
Today, improvements in technology are making it easier to gather, store and analyze data for cbm. Condition based maintenance cbm systems have evolved as an effective health and usage monitoring mechanism in aircrafts by reducing the costs associated with unscheduled maintenance. The equipment has sensors that communicate if its ok in realtime. Development of condition based maintenance for coal handling. Cbm can drastically reduce operating costs and increase the safety of assets requiring maintenance.
Application of the condition based maintenance checking. 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. The concept of condition based maintenance, discussed in this paper for coal handling plant is to offer significant benefits. Apr 17, 2014 the failure position and remain useful life rul of equipment could be predicted by phm. 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. Infrastructure and configuration required to turn diagnostics into information. Decisionmaking methods of conditionbased maintenance. Optimal maintenance thresholds to perform preventive actions by. Conditionbased maintenance cbm, shortly described, is maintenance when need arises. 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. Early on a distinction is made between an extended condition based maintenance system and one of its constituentparts, trending, where the main focus of. Conditionbased maintenance cbm is a maintenance philosophy used by industry to actively manage the health condition of assets in order to perform. Apply to maintenance engineer, process technician, chief engineer and more.
For example, most people change the oil in their vehicles every 3,000 to 5,000 miles traveled. Perhaps we re finally turning a corner on the ageold firefighting mentality, replacing it with a more planned. 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. Predictive maintenance position paper deloitte analytics institute 05 introduction knowing well ahead of time when an asset will fail avoids unplanned downtimes and broken assets.
These principal maintenance strategies, rather than being applied independently, are integrated to take advantage of their re. Condition based maintenance and condition monitoring pf curve thinking figure 2. This will allow maintenance to be scheduled based onequipment condition and not time. An evaluation of condition based maintenance for a. The data collected can be used to establish trends, predict failure, and calculate remaining life of an asset. Cbm conditionbased maintenance cfr code of federal regulations cmms computerized maintenance management system co2 carbon dioxide dc direct current epss emergency power supply systems fist facilities instructions, standards, and techniques hecp hazardous energy control program hz hertz jha job hazard analysis mawp maximum allowable working. Rules for survey after abs construction part 7 in mid2002. On average, predictive maintenance increases productivity by 25%, reduces breakdowns by 70% and lowers maintenance costs by 25%. Cbm models can be divided into two elements, predictive maintenance pdm and realtime monitoring rtm, which are the pillars of cbm techniques. Mohamed bendaya is a professor in the department of systems engineering at king fahd university of petroleum and minerals, dhahran, saudi arabia. Class maintenance plans will be based on cbm methodology using rcm principles. Condition based monitoring cbm is a type of predictive maintenance that involves using sensors to measure the status of an asset over time while it is in operation. Strategies and concepts such as condition based maintenance cbm have thus evolved. Reliabilitycentered maintenance methodology reliabilitycentered maintenance rcm is the optimum mix of reactive, time or interval based, condition based, and proactive maintenance practices.
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