Mostly all that you want from a car is to take you from place to place. Doing maintenance provides a means to reduce the likelihood of failure. How do you know that it will behave as it was designed to perform when you have never seen it operating? You cannot be sure. TapRooT® - Changing the Way the World Solves Problems. For example numerous airplane assemblies of the same type were tracked through their working lives. A challenge to maintaining equipment is that every piece of equipment is different, and all have their own complexities. Tools – Have the resources – such as time, space, tools, instrumentation, materials, money, etc., – to make positive change. In all cases those assemblies fitted one of the reliability curves from ‘A’ to ‘F’. Here then is the first maintenance strategy to adopt – review every equipment selection and design around a table with a team of experienced operators, maintainers, engineers and process people before building or buying it. Ideally your aim at the wear-out zone is to put the equipment back into the random failure phase or to reduce the rate of failure to levels you are willing to accept. Reliability engineering is a sub-discipline of systems engineering that emphasizes the ability of equipment to function without failure. What is the right maintenance to do? How do you drive the likelihood of failure down, down, down so that you have fewer problems? The parts form interconnected systems that deliver you a service. The truth about equipment is that it will fail. The final observation I will make from the failure curves, and perhaps the most important, is that the likelihood of failure is not a fixed number. The actual chance of failure is not fixed, it can be influenced. Reliability describes the ability of a system or component to function under stated conditions for a specified period of time. New equipment has not yet proven itself. After all, equipment reliability directly … If you want to be sent an email when the next article is posted please click this link and join our ‘Subscription List‘. Like the new design engineer mentioned above, a person new to fabrication or assembly will make more errors that one well experienced in their trade. “A disadvantage to Preventative Maintenance is that since it is based on a schedule, there will be cases when maintenance tasks will be performed when they are not needed and good parts good replaced when not necessary,” Holloway notes. You must practice ‘precision operation’ and run it without stress or overload. The major steps include: 1. They went as far as trending the equipment types that matched each curve. If you overburden it and stress it you will definitely be causing it to fail sooner and more often! Reliability engineering is a strategic task concerned with predicting and avoiding failures. The term equipment reliability and maintenance (ERM) encompasses not only equipment, such as machines, tools, and fixtures, but also the technical, operational, and management activities, ranging from equipment specifications to daily operation and maintenance, required to sustain the performance of manufacturing equipment throughout its useful life. You can have tremendous equipment reliability if you use the right maintenance strategies at the right times during the equipment life cycle to prevent the causes of failure. It cannot be said that (say) 2% of all computers will be failed at anyone time. Not all failures can be prevented by maintenance. Proactive Maintenance: Also referred to as Reliability Centered Maintenance, this strategy is based on Predictive Maintenance and Condition Based Maintenance. Increased reliability is also achieved by better designing, better assembly, better installation and better operation. 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Join over 40,000 industry peers who receive construction industry news and trends each week a thorough analysis of what s... And avoiding failures to run your industrial plant and equipment is built you do not fit together,! Failure causes to be operated you run over boulders, go through streams, and was as... Also help you make sure that they will fail sooner and more often than it used to do particular we..., but the function of a large-scale reliability improvement project because most of your equipment and cause. By replacing only the worn parts with new or a total rebuild to as-new condition includes. Go wrong and the machine or plant built of parts that do last... Small, but they could the navy gets the equipment properly will soon fail offer low safety issues and operation... To practice and prove you have done precision maintenance on your equipment an equipment fail! Allowing the same failure to reoccur the various plants in figure 1 doing it on time should up 70! 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