Many techniques exist to find the root cause of failure, including Pareto charts, 5 whys, fishbone diagrams, cause and effect … It uses the concept based on identifying the top 20% of causes that need to be addressed in order to resolve 80% of the problems. Of the 14 work requests on the model SZ-3024 fans (a centrifugal belt driven fan), 36 percent were triggered by vibration and 64 percent by loose belts (Fig. In a large pulp mill, a study of three years of equipment-level downtime records showed that, of the more than 12,000 items in the plant, 87 (less than 1 percent) caused 80 percent of all unscheduled maintenance downtime. Additionally, a more reliable bearing was identified for the application that is expected to improve the overall reliability of the fan. However, a significant number of these position indication problems were still occurring. The Asset Criticality Ranking and Pareto analysis are two powerful and easy to generate metrics that enable you to prioritize everything you do with your reliability improvement program. The benefit of this systematic breakdown is a focused review of a limited number of components. Pareto analysis technique is considered to solve the majority of problems. Pareto analysis is a formal technique useful where many possible courses of action are competing for attention. Pareto analysis was developed by an Italian economist (amongst other fields) who analysed the wealth of Italy. Pareto Principle is based on 80/20 rule which says “80% of impacts are due to 20% of causes”. In maintenance, the "Pareto effect" is often much stronger than 80/20. The systematic application of a Pareto analysis resulted in improved equipment reliability and reduced equipment maintenance. This is an excellent example of the value of good maintenance/operating information. This statement is merely a rule of thumb and is not an immutable law of nature. © 2020 Efficient Plant. 4) of position indication failures by valve model number was conducted over a 10-year period from 1994-2003. This arguably is the best measure of maintenance because it not only provides a measure of maintenance's "product" (reliability), but it also provides this information in a form that lends itself to a Pareto analysis, which can be used directly to improve performance. Fig. Break down by manufacturer, modelThe work requests for a specific equipment type are reviewed then by manufacturer and model. You have to make important decisions about how to invest your time and money. Pareto analysis is a creative way of looking at causes of problems because it helps stimulate thinking and organize thoughts. What is the Pareto Principle? Pareto analysis helps identify those significant few problems so people can target them for action. I've found that I … This example includes screenshots to help explain how the data should be entered. 3. Without these two metrics, how do you decide: Which assets should you first analyze with RCM and/or FMEA (you don’t have the time to analyze every asset)? 1. hbspt.cta.load(3951034, 'e84dcc94-6e63-48f1-b2ac-0381ec9f447a', {}); Don Armstrong is the president of Veleda Services Ltd., which provides consulting and training services to maintenance departments in industrial plants and i... How to Cost Justify a Lubrication Program, Beyond Training: Closing the Skilled Labor Gap, Use Lubricant Zone Inspections for Early Problem Detection. The solenoid valves use a reed switch assembly and a magnet mounted on the valve stem to actuate open or closed lights on the main control room panels. Many of these activities can be greatly simplified while still achieving most of the benefits if you know where the greatest opportunities lie. 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