Understanding conditional probability is key to determining the right maintenance and how it impacts your reliability
In part 1 of this 2 part series, “Maintenance and Reliability Maturity”, I point out that achieving the maximum value from your physical assets will require excellence in 2 main dimensions, efficiency, and effectiveness. Those are described more fully in our recent book, “Paying Your Way“. I also promised a Maintenance and Reliability Maturity Assessment tool. That tool is now available to you, our readers.
The link below will take you to a web-page that is only accessible via the link – it is not included in our website’s menus or other links. When you click on it, you will see a brief explanation of how to use it and then a series of 10 questions, 5 on efficiency, and 5 on effectiveness. In a few of them we use terms that have precise definitions, so please read those definitions (in light blue boxes) before entering your answers to the questions in the light green answer cells. (more…)
In my book, Uptime, I talk about doing a review or assessment to determine your current state as compared with your vision of some desired future state. This suggests to many that a formal assessment is needed. However, you might also notice that I removed the Appendix containing sample assessment questions. Here’s why… (more…)
Reliability Centered Maintenance is an analytical process used in decision making about how best to manage equipment and system failures, and their consequences. Much of its output comprises maintenance tasks with assigned task frequencies. Those tasks will ultimately be managed in your Computerized Maintenance Management System (CMMS) or Enterprise Asset Management Systems (EAM). You don’t need software to perform RCM analysis, but it is helpful. (more…)
Many of you may be surprised to learn that Reliability Centered Maintenance (RCM) was actually developed with cost cutting in mind! Aircraft maintenance costs were huge. For example the Douglas DC-8-32 aircraft (a four engine narrow body jet liner built from 1958 to 1967 that carried 150 passengers) required upwards of 4,000,000 man hours of maintenance work for only 20,000 hours of flying time! (more…)
Reliability Centered Maintenance (RCM) was developed in the airline industry to be used for developing maintenance programs for new aircraft. There’s no doubting it – originally RCM was intended for new designs and arguably where the results of failure could be catastrophic, specifically the loss of life and where costs of maintaining had grown ridiculously high. (more…)
3 Minute Read. Educational institutions realize that we all learn differently and combinations of learning styles will reach most of us. Some of us learn by seeing (reading), some by doing (tactile), some by hearing (aural). Most of us have a bit of each of these and rarely only one is enough. In college and university there is reading as well as assignment and lab work. We need both, so, how do we learn once we leave the academic world?
We learn a lot from reading, but we don’t remember much of it for long. But reading alone is rarely enough to truly get that deep knowledge needed to be competent – we also need practice. (more…)
Reliability Centered Maintenance (RCM) is method for determining the most appropriate failure and consequence management strategies. It deals with your physical assets in your current operating context. The first four questions in the RCM method, are defined in standard, SAE JA-1011, “Evaluation Criteria for Reliability Centered Maintenance (RCM) Processes.” They utilize the time proven engineering method, Failure Modes and Effects Analysis (FMEA). (more…)
Reliability is a key to successful risk management in any industry. It is particularly important in electrical utilities where the service must be “always on”. Failures can result in power outages and major disruptions to many customers, some of whom are providing critical services like hospitals, banks, stock exchange computers, traffic signals, mass public transit, and so on. (more…)