Pf curve maintenance software

Maximizing the pf interval with predictive maintenance. The curve of figure 1, therefore, looses its simple geometrical visuality. Dec 06, 2018 cmms software is essential here, as it allows you to look back at work order history, failure data, and your maintenance schedule. The reliability impact within the pf curve reliabilityweb. Maximizing the pf interval through conditionbased maintenance. The complexity and nature of interactions between component is the most important consideration here. The pf curve has become an essential component to any reliability centered maintenance program, and being able to understand it can help extend the lifespan of your machines by more than you might think. Cmms software is essential here, as it allows you to look back at work order history, failure data, and your maintenance schedule. The curve shows that as a failure starts manifesting, the equipment deteriorates to the point at which it can possibly be detected p. There is a sense in which failure is a process, not an event. You may order this book through this website by clicking here. The preventative maintenance pm task had to be performed before issues were to become failures. W hen looking at the pf reliability curve, there are two main categories of maintenance reliability action where resources may be focused. Planning and scheduling with the pf curve the basics of the pf curve.

In the same way your pair of shoes eventually get worn out after 500 miles of walking, your key. Euromaintenance is known as the summit for all involved in maintenance across europe, its the place to be. Pf curve explained everything you need to know upkeep. As with any maintenance process, it is greatly enhanced by knowledge of how assets operate normally and how they can fail. Staving off failure with maintenance is often not as simple as doing the same inspection at a set interval. Reliability centered maintenance the field of reliability is well established with years of research and development originating in the. What is often not discussed and overlooked, is what happens before the. This software, in my opinion, is the best value out there in the cmms world. Oncondition maintenance relies on the capability to detect failures before they. But with more and more equipment being fitted with realtime asset health monitoring equipment and with the advent of predictive analytics and big data, is it really relevant anymore. Since the equipment defect or failure has already begun, this region is about detecting and predicting equipment failure modes. Potential failure p is the loss of some protective granules from the cap.

The bathtub curve is widely used in reliability engineering. Machines are never built to run forever, but they can last a lot longer than one may expect. Explore lm6000 maintenance solutions multiyear agreements our tailored strategic fleet360 multiyear agreements mya are designed to help you focus on your core business, delivering productive outcomes including plant profitability, competitiveness on the dispatch curve for utilities, and longterm reliability for industrial sites. The bathtub curve, displayed in figure 1 above, does not depict the failure rate of a single item, but describes the relative failure rate of an entire population of products over time. An introduction to the fundamental concept of the pf curve where we can identify the point of functional failure what the user wants it to do and proactively find it in the act of failing prior. Over time, this has come to include multiple wordings that describe various costeffective practices to keep equipment operational. We can say that most failures take time, and for that we can be thankful. Ges advanced gas path agp is a great example of power flexefficiency at work, setting new standards in performance. Points have been placed along the curve to represent a period of time pf from defect detection point p to functional failure point f. Nov 01, 20 this problem is made worse when an organization uses maintenance software or eam enterprise asset management software that kicks out all pms for the month on the 1st and you think you have 30 days to complete the pms. Intro to the maintenance pf curve amp maintenance forums. It describes a particular form of the hazard function which comprises three parts. Understanding the pf curve and its impact on reliability.

It illustrates an assets progression toward failure. Automated download system is powered by our preferred method of payment, secure pay pal. In addition to software like a cmms, each organization should go. By extending the pf interval, conditionbased maintenance cbm methods provide the earliest possible prediction of equipment failure, with maximum benefit.

In other words, it predicts the condition of an asset based on what usually causes it to fail and when. How to use the pf curve to improve equipment maintenance and. One of the first, yet hardest, things to learn by kevin clark, cmrp. Preventive maintenance of fiber optic cables and optics the end of a fiber optic cable and the inner surface of an optical module lens constitute optical surfaces that should be properly c leaned and maintained to ensure optimum reliability and system performance. In this article, we will discuss the pf interval, how it is applied and whether it can be applied to equipment fitted with realtime. Join over 14,000 maintenance professionals who get monthly cmms tips, industry news, and updates. Major maintenance tasks plotted on an asset deterioration model. An introduction to the fundamental concept of the pf curve where we can identify the point of functional failure what the user wants it to do. Outside of the technical jargon, the scurve model simply makes use of the projected number of manhours and costs to complete the project vs. Introduction to reliabilitycentered maintenance this is an excerpt of the first chapter of the book reliabilitycentred maintenance by john moubray. Maintenance is carried out when certain indicators give the signaling that the.

The impact of maintenance on the service life of assets. This report was approved for public release on december 29, 1978. The pf curve is the time between a change in some parameter away from the norm, indicating the point of commencement of decay. This problem is made worse when an organization uses maintenance software or eam enterprise asset management software that kicks out all pms for the month on the 1st and you think you have 30 days to complete the pms. Illustration of a deterioration model for a roof system. Promis portal facilitates employees to login to a universally managed central web server and address their enquiries. When combining all these aspects, the full ratio of the equipment is laid out so the user can see in what time span a machine is supposed to break down. Many failure modes exhibit signs of warning as they are about to occur. By extending the pf interval, conditionbased maintenance cbm. The maintenance crews are told to make sure their pms are completed within the month so they can meet 100% pm compliance. Well help you narrow down software options in just a few minutes. If the failure is not detected and mitigated, it continues until a hard failure occurs f. Reliable process solutions wants to ensure attendees learn effective work management, reliability strategy, precision maintenance, lubrication.

The pf curve, representing the life of an asset, is elongated when conditionbased maintenance replaces timebased maintenance. Maintenance based on the equipment performance monitoring and the control of the corrective actions taken as a result. Oncondition maintenance relies on the capability to detect failures before they happen so that preventive maintenance can be initiated. Partial failure, or potential failure p, is a worn impeller in a pump that still pumps fluid but not to the required level. Examples of pf intervals listed below are some examples to illustrate the application of the pf interval. Once youve gathered data on historical equipment failure within the context of the preventive work youre doing, failure modes start to emerge. Intro to the maintenance pf curve tpickett 81815 11. The pf pro disc printer can be used from any application, although it is recommended that any artwork you create is 12cm by 12cm in size. Equation 10 can be solved numerically for the value of t p which minimizes the cost of maintenance in the long term. Provident fund employee online self service portal software pf portal software is an online software to address the employee enquiries on pf balance, loan eligibility, pf annual statements etc. Wear and tear naturally occur with continual usage. The pf curve is something that wethose of us in the maintenance and. At a recent maintenance function, i asked 70 maintenance and reliability professionals how many of them had heard of the pf curve and only about 10% stated they had.

Determining the frequency of condition monitoring tasks. Making preventive maintenance tasks more efficient by scheduling them justintime. The one we show is an iteration refined by preston ingalls, a maintenance consultant with decades of experience in heavy. The method assumes that failure is a fairly random and unpredictable event, caused by the culmination of many factors. When talking about the pf curve, we must go back to the reliabilitycentered maintenance report 1 by nowlan and heap of united airlines that was sponsored by the u. The pf curve is a useful visual tool that helps maintenance teams make important decisions on how and when to address asset problems. How a pf curve can improve preventive maintenance efforts. The pf curve recognizes the complexity of this task, which is why it works so well. Maximizing the pf interval for successful predictive maintenance. The pf interval is it relevant in the world of big data.

Why people do not understand the pf curve by ricky smith cmrp why do people not understand the pf curve. Dec 05, 2018 the bathtub curve is used in reliability, engineering and maintenance industries to describe failure rates over time. Jun 01, 2012 an introduction to the fundamental concept of the pf curve where we can identify the point of functional failure what the user wants it to do and proactively find it in the act of failing prior. The pf curve figure 1 is a common way to represent the behaviour of an asset pump, motor, or asset component belt, bearing before actual functional failure has occurred. The dipf interval and how to align your maintenance strategy the diagram below illustrates the dipf interval, created by doug plucknette, president of reliability solutions inc. A pf curve is a visual representation of an assets deterioration over time, explains david albrice, senior asset management consultant at ch2m.

The pf curve figure 1 is a common way to represent the. After a refactoring maintenance, the original test software can be reused without modification. The first part is a decreasing failure rate, known as early failures the second part is a constant failure rate, known as random failures the third part is an increasing failure rate, known as wearout failures. It shows the relationship between machine breakdown, cost, and how it can be prevented. The software profession has a problem, widely recognized but which nobody seems willing to do anything about. This was an improvement, but it was difficult to optimize the timing of the tasks. Roi work order generator privacy terms become a partner.

A pf curve is a graph that shows the health of equipment over time to identify the interval between potential failure and functional failure. Functional failure f is a bearing seazing in a fan motor and causing the fan to stop. A software project is the complete procedure of software development from requirement gathering to testing and maintenance, carried out according to the execution methodologies, in a specified period of time to achieve intended software product. Reliability centered maintenance vs condition based. Cbm data allows maintenance personnel to perform maintenance at the exact moment it is needed, prior to failure. Predictive maintenance pdm technologies along the pf curve in relation to potential failure p and functional failure f. Logic tells us that the longer the warning period, the easier it is to support the planning and scheduling effort necessary for an efficient, reliabilitybased maintenance organization.

This seminar will work to build upon and assist companies on proper and. Aug 15, 20 why people do not understand the pf curve 1. It is the ideal moment to reflect on maintenance in a european context. Curve3 also has a new demo mode which allows users to test the interface as well as the main calibration and verification functionalities of curve3 including verify mode without a serial number. Pf interval pf curve the ins and outs of maintenance. The f distribution with df1 n1 and df2 n2 degrees of freedom has density.

There are numerous computerbased maintenance tracking systems or maintenance. Improving maintenance by adopting a pf curve methodology the pf curve. The pf curve revisited hp reliability, an eruditio llc. Table of contents the maintenance management guide is a powerpoint 97 presentation consisting of 75. Understanding the importance of proper equipment installation there has been much discussion and often debate around the pf curve. Five tips for optimizing a facility preventive maintenance. This short video introduces the concept of the pf interval one of the core principles that underpins reliability centred maintenance and preventive maintenance program development. Free curve images software free download free curve images. Outside of the technical jargon, the s curve model simply makes use of the projected number of manhours and costs to complete the project vs. When i see a pf curve with preventive maintenance, and runtofailure strategies combined into it or overlaid on top of it, i realize people do not understand the true meaning of the pf curve.

Oncondition maintenance using pf interval or failure. Set on an xy axis where x measures time and y measures the condition of an asset, the curve aims to represent the behaviour of an asset before it actually fails. Planning and scheduling with the pf curve the basics of the pf curve when talking about the pf curve, we must go back to the reliabilitycentered maintenance report by nowlan and heap of united airlines that was sponsored by the us department of defense. This is extremely useful if not essential for good condition monitoring. The pf curve is a way of representing an assets behavior or condition before it has reached a failed state. The pf curve chart is one of the most important tools for a reliability centered maintenance plan. For example, the pf curve for a bearing in a particular application may be 6 weeks. Sample files are included and must be used for demo mode. It demonstrates the relationship between machine breakdown, cost, and how it can be prevented. Pm systems must be designed for the actual equipment as set up, age of the equipment, product, type of. How to use the pf curve to improve equipment maintenance. By combining design innovations, materials advancements, and proven modelbased control software, the advanced gas path enables ge gas turbine customres to benefit from dramatic output and efficiency improvements, while extending maintenance intervals and maintaining low. Reactive maintenance rm rm, sometimes referred to as living life at the bottom of the pf curve, is maintenance performed after a failure, or after an obvious, unforeseen threat of immediate failure.

The goal is to have enough advance notice that we can effectively plan and schedule the repair, get the materials and execute the repair prior to failure. Software for growth curve fitting and visualization curve fitter is a program that allows you to fit a growth curve using a simple gui or an advanced scripting environment. The proposed time, manhour and cost data are referred to as the baseline data. This post will contrast reliability centered maintenance rcm and condition based maintenance cbm. The reliability impact within the pf curve by randy riddell w hen looking at the pf reliability curve, there are two main categories of maintenance reliability action where resources may be focused.

Jun 17, 2016 the pf curve can be used to aid in a few important maintenance processes, such as. Reliability centred maintenance rcm was developed by the aircraft industry and it has now migrated into industries. Connect with an advisor chat with a software advisor and get personalized software recommendations via phone or email. Exakt summarizes the risk factors associated with working age and monitored variables and creates a new kind of graph by transforming the significant risk information onto a 2dimensional optimal decision graph. Machine maintenance is an essential component to any industrial operation, but all too often, these processes are neglected if not ignored entirely. Despite its usefulness a lot of companies may overlook its value. Regardless of your knowledge or skill level you will learn things to take away from this training course.

Introduction to reliability centered maintenance rcm part 1. Preventive maintenance of fiber optic cables and optics. In addition to implementing a variety of curve fitting routines its main advantage over other software programs is its ability to allow you to easily visualize your data. The bathtub curve and product failure behavior part 1 of 2. As a maintenance professional, unless you have been sleeping under a rock these last ten or so years, you will have at least heard of the pf curve, even if you dont understand it, or use it to your advantage.

All cmms suppliers say that, but i found this one to be exactly that. Oncondition maintenance using pf interval or failure detection. You can just copy the system from the manual or from your old job and it will work. The pf curve illustrates the relationship between the warning signs that are detectable by various technology or methods and the progression of the failure. The real actual equipment condition is continuously assessed by the online detection of significant working device parameters and their automatic comparison with average values and performance.

The software finds the t p which minimizes the long run per unit of working age maintenance cost c t t t. Running machines in runtofailure rtf mode is an appropriate strategy for assets where the consequence. A common misunderstanding about reliability centred. An introduction to the fundamental concept of the pf curve where we can identify the point of functional failure what the user wants it to do and proactively find it in the act of failing prior to that point. The eventual failure of any equipment is inevitable. How to apply the correct maintenance strategy to your assets. It is more important to structure the design so that future changes can be made more easily. Equation 10 expresses the maintenance cost of an item relative to a unit of its usage. Conditionbased maintenance cbm uses sensor devices to collect realtime measurements ie.

What is often not discussed and overlooked, is what happens before the equipment starts to deteriorate. If you prefer us to manually process your order or would like to mail or fax order in, please click cd and book order form on our secure servers. A common misunderstanding about reliability centered maintenance. Jul 17, 2019 the pf curve, representing the life of an asset, is elongated when conditionbased maintenance replaces timebased maintenance. Improve preventive maintenance with a pf curve software advice. Some individual units will fail relatively early infant mortality failures, others we hope most will last until wearout, and some will fail during the. You can think of this problem as a variant of the well known telephone game, where some trivial rumor is repeated from one person to the next until it has become distorted beyond recognition and blown up out of all proportion. A maintenance professional can reduce the number of preventive maintenance tasks by scheduling them based on historical data showing when the particular asset tends to fail. Iconics offers free remote expert assistance software solution during covid19 crisis. The conference, with the support of the efnms, is the only commercially independent conference covering the topics we deal with in the maintenance world. Improving maintenance by adopting a pf curve methodology. The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure, and supporting utilities in industrial, business, governmental, and residential installations. Understanding the pf curve and its impact on reliability centered.

Maintenance management powerpoint presentation download. After purchase, you receive an email with download link. The video also touches on the topics of breakdown, scheduledpreventive. Jul 11, 2016 there are numerous computerbased maintenance tracking systems or maintenance modules on enterprise software systems you can use to avoid the kinds of oversights and mistakes inherent in paper. This article has been updated since its original publication to reflect a more recent version of the software interface. The pf curve chart leads the way to reliable machinery.