Applied basically when number of equipments are few. Predictive maintenance and conditionbased monitoring. The above picture is just a screen shot, click for animated demo. Rules for survey after abs construction part 7 in mid2002. Predictive maintenance of pumps using condition monitoring. These predictions are based on the condition of the equipment that is evaluated based on the data gathered through the use of various condition monitoring. The portion of maintenance work hours that are performed at an overtime rate. Condition based maintenance cbm or predictive maintenance is a technology that strives to identify incipient faults before they become critical which enables more accurate planning. Condition monitoring and diagnostics general guidelines. An overview of timebased and conditionbased maintenance in.
Pdf condition based maintenance cbm in the oil and gas. Effective maintenance management depends on applying the appropriate maintenance techniques. These maintenance techniques were based on the theory. Feb 21, 2017 condition based maintenance strategy 1. 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. A little lubrication and minor adjustments are done in this system. This text attempts to present the fundamental justification for conditionbased maintenance together with enough analytic and practical guidance for its implementation. Run to failure rtf, and conditionbased maintenance cbm techniques to in an integrated manner to increase the reliability centered maintenance. Condition based maintenance cbm in the oil and gas industry. You will recall that preventive maintenance is timebased. Key steps to implementing conditionbased maintenance avt. 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 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.
There are 9 types of maintenance split between preventive maintenance and corrective maintenance. For this reason, achieving costeffective plant maintenance is highly important. It focuses on responding to the root causes of machine or material failure, and dealing with those issues after problems occur. Conditionbased maintenance predictive techniques emaint. For such conditionbased maintenance to be possi ble, it is essential to have knowledge of the machine condition and its rate of change with time. 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. 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. Component selection for condition based maintenance, parameter selection for monitoring. The need for improved performance of the huge investment in industrial plant particularly electrical generating machinery in recent times necessitates the application of condition monitoring techniques in its maintenance. The purpose of this book is to inform readers about techniques currently available in the field of condition monitoring. Conditionbased monitoring is an accepted feature of many industries.
Infrastructure and configuration required to turn diagnostics into information. 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. A maintenance strategy that is based on measuring the condition of assets to assess whether they will fail during some future period, and then taking appropriate action to avoid the consequences of that failure. There are two main methods used for condition monitoring, and these are trend. Maintenance is carried out on the basis of the failure. Preventive maintenance pm, as scheduled maintenance tends to be called, doesnt prevent anything, navarro says. The growth in demand for crude oil and natural gas is unlikely to show any.
Cbm was introduced in 1975 in order to maximise the effectiveness of pm decision making. Oct 15, 2014 with predictive maintenance pdm, organizations are setting aside the old methodology of i think its bad to a conditionbased maintenance methodology of i know its bad. Guide for survey based on preventative maintenance techniques. This paper presents an overview of two maintenance techniques widely discussed in the literature. An overview of timebased and conditionbased maintenance. Pdf condition based maintenance byron ellis academia. As it is normally used, pm minimizes downtime only.
Condition based maintenance engineer jobs, employment. The terms condition based maintenance, on condition maintenance, and predictive maintenance are often used interchangeably. For example, most people change the oil in their vehicles every 3,000 to 5,000 miles traveled. Condition based maintenance strategy linkedin slideshare. Conditionbased maintenance cbm is a maintenance technique that involves. The terms conditionbased maintenance, oncondition maintenance, and predictive maintenance are often used interchangeably. Conditionbased maintenance is rooted in conditionbased monitoring. The book focuses on the main condition monitoring techniques particularly. Predictive maintenance training course by online distance. Conditionbased maintenance and machine diagnostics. Predictive maintenance of pumps using condition monitoring by raymond s. Conditionbased maintenance, which is predictive in nature, is part of conditionbased monitoring. 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. Condition based maintenance cbm is a maintenance strategy that, simply put, monitors the condition of machinery using various process parameters.
Condition monitoring techniques such as vibration analysis, ultrasonics, thermography and oil analysis can be used solely or in combination and are vital in making sure maintenance is. This approach promises cost savings over routine or time based preventive maintenance, because tasks are performed only when warranted. Preventive maintenance is done before a failure occurs and consists of maintenance types like. Introduction emerging challenges in the oil and gas industry are proving to be a catalyst for change in the management of facilities, new and old, worldwide. Predictive maintenance is the complement of preventive maintenance. 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. According to the standard the approaches to maintenance can be categorised as presented in fig. Condition based maintenance strategy for equipment failure.
Key steps to implementing conditionbased maintenance. Condition based maintenance cbm, or predictive maintenance pdm, is a maintenance strategy that involves monitoring and testing vital machine and equipment parameters for their state. 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. With predictive maintenance pdm, organizations are setting aside the old methodology of i think its bad to a conditionbased maintenance methodology of i. Time maintenance condition based maintenance maintenance policies offline online failure based maintenance break down maintenance. Apply to corrosion engineer, mechanical associate, engineer and more.
Conditionbased maintenance cbm southwest research institute. Predictive maintenance is a proactive maintenance strategy that tries to predict when a piece of equipment might fail so that maintenance work can be performed just before that happens. This involves keeping tabs on the state of an asset using certain performance indicators. Factors such as fault and failure modes, criticality and costeffectiveness need to be considered. Finally, future developments in the use of expert systems and a1 techniques are highlighted. The main function of condition monitoring is to provide this knowledge.
There are a number of different tools and techniques that allow maintenance teams to do this. Cbm can drastically reduce operating costs and increase the safety of assets requiring maintenance. 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. Automation in condition based maintenance using vibration. 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. Aug 29, 2016 condition based maintenance cbm or predictive maintenance is a technology that strives to identify incipient faults before they become critical which enables more accurate planning.
Conditionbased maintenance requires an investment in measuring equipment and staff upskilling so the initial costs of implementation can be high. Cbm is a set of maintenance actions based on realtime or nearreal time assessment of equipment condition which is obtained from embedded sensors it allows. Condition based maintenance requires an investment in measuring equipment and staff upskilling so the initial costs of implementation can be high. Choose the maintenance strategy which gives maximum reward. The portion of corrective maintenance work hours that are planned and scheduled in advance not unplanned breakdowns 85 95% % overtime. Through the utilization of various nondestructive testing and measuring techniques, predictive maintenance determines equipment status before a breakdown occurs. Implementation strategies and tools for condition based. More competitive together reduce maintenance costs by standardized solutions and services within condition monitoring. Condition based maintenance is rooted in condition based monitoring.
In manufacturing, its application has been somewhat muted. This course covers many seal types and related information in the industry. 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. Condition based maintenance plus dod guidebook dau. Using condition maintenance can cause you to become a reactive organisation if you decide to rectify problems only after detecting impending failure.
For example, if an image indicated a difference between a pulley belt temperature. Condition based maintenance cbm techniques, such as vibration monitoring, are becoming a very attractive method for companies operating highvalue machines and components. This is done in order to predict machine failures and to do restoration to avoid hazards which could otherwise occur. The paper discusses how the tbm and cbm techniques work toward maintenance decision making. The diagnostic capabilities of predictive maintenance technologies have increased in recent years with advances made in sensor technologies. How and why is this ability to detect and visualize an objects temperature proile. Predictive maintenance techniques are designed to help determine the condition of inservice equipment in order to estimate when maintenance should be performed. Guide for surveys based on machinery reliability and. Time based maintenance, failure finding maintenance, risk based maintenance, condition based maintenance and predictive maintenance. 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 data collected can be used to establish trends, predict failure, and calculate remaining life of an asset.
This publication collects and analyses proven condition based maintenance strategies and techniques engineering and organizational in member states. 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. This relatively new approach to maintenance uses data drawn during operations andor maintenance intervals to forecast the need for additional or future maintenance. In maintenance techniques, the use of objective condition monitoring is valued low in comparison to human senses, corrective maintenance, and other preventive. Cbm introduces new maintenance techniques, which can be difficult to implement due to resistance within an organization. Predictive maintenance attempts to detect the onset of a degradation mechanism with the goal of correcting that degradation prior to signiicant deterioration in the component or equipment. The complete conditionbased maintenance cbm guide fiix. Cbm processes are applicable to maintenance activities on complex systems.
716 529 1185 47 1421 858 1034 756 80 1098 1096 52 556 254 409 788 1410 292 700 363 526 354 612 54 647 1021 959 1324 948 1059 466 381 759 584 906 1179 885 50