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what is maintainability?

08 Aralık 2020 - 1 kez okunmuş
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what is maintainability?

An example corrective action would be replacing a condenser unit in your HVAC system when it fails. There are also discussions and materials available centering on the idea of Design for Maintainability (DFM). See MAINTENANCE. He's worked in training/learning & development for 25 years, in safety and safety training for more than 10, is an OSHA Authorized Outreach Trainer for General Industry OSHA 10 and 30, has completed a General Industry Safety and Health Specialist Certificate from the University of Washington/Pacific Northwest OSHA Education Center and an Instructional Design certification from the Association of Talent Development (ATD), and is a member of the committee creating the upcoming ANSI/ASSP Z490.2 national standard on online environmental, health, and safety training. A Maintainability Prediction analysis uses mathematical equations to determine maintainability metrics. What Is Maintainability? Maintainability encompasses a range of activities to keep systems up and running. We’re hitting the ground running right out of the gate[...], Reliability Block Diagrams (RBDs) offer a way to graphically depict[...], Our spring release has sprung! The words Maintenance and Maintainability are often used synonymously and that is incorrect. You can see how this can be crucial in areas such as keeping military aircraft able to fly, communication networks operating, or life-saving medical devices up and running. It can be especially difficult in the design stage of the product lifecycle to assess repair metrics when actual production has not yet started. We believe in always creating, always innovating, and always being the best. Contact us today so we can talk about your MTTR software needs and how Relyence Maintainability Prediction can help, or sign up today for our free trial! At Relyence, we have a passion for always improving. As a result, we’ll be writing a series of articles to introduce you to some key concepts in reliability and maintainability. Jeffrey Dalto is an Instructional Designer and the Senior Learning & Development Specialist at Convergence Training. Maintenance Tasks, Maintenance Task Groups, FD&I Outputs, and Maintenance Groups can be considered the building blocks for the Maintainability Prediction analysis. As you then move onto future product revisions, you can start with your original analysis and adapt the lessons learned into your next design. Code maintainability is important. Collectively, they affect both the utility and the life-cycle costs of a product or system. Maintainability is the measure of how quickly and easily a product or system can be repaired in order to return to an operating state after a failure has occurred. When an incident causing downtime occurs, maintainable services can be … Keep your eyes on our blog for additional articles on reliability and maintainability and we’ll go into more details and cover things in more depth. Again according to the American Society of Quality, maintainability is defined as “The probability that a given maintenance action for an item under given usage conditions can be performed within a stated time interval when the maintenance is performed under stated conditions using stated procedures and resources. The University of Tennessee Reliability and Maintainability Center (RMC) provides professional development training, assessments, company studies and a University-sanctioned certification based on measurable results (safety, culture, quality, throughput/uptime and cost). 4. a. Maintainability has two categories: serviceability (the ease of conducting scheduled inspections and servicing) and repairability (the ease of restoring service after a failure).”. Unacceptable downtimes could be caused by a number of issues such as poor repair procedures, inability to correctly isolate a fault, or inefficiencies that cause the repair process to be too cumbersome or difficult to perform. Save my name, email, and website in this browser for the next time I comment. Availability, reliability, and maintainability are a set of attributes that we often talk about in Maintenance. ); therefore, the ability to maintain a software application with respect to safety is essential. To learn more about this, please read the article below, and of course let us know if you need any assistance with your maintenance, maintainability, or reliability training programs. Top articles, guides, and freebies delivered straight to your inbox. Again according to the American Society of Quality, maintainability is defined as “the probability that a given maintenance action for an item under given usage conditions can be performed within a stated time interval when the maintenance is performed under stated conditions using stated procedures and resources.” There is a strong correlation with related key performance indicators and highly reliable plants. Relyence® is a registered trademark of Relyence Corporation. These differing perspectives on maintainability have always been a cause of immense grief to IT projects. A top quartile reliable plant is typically more productive, has more stable processes resulting in higher quality, lower costs, and has a more engaged workforce. The calculations are based on the tasks needed to complete a maintenance activity and their associated times. The discipline’s first concerns were electronic and mechanical components (Ebeling, 2010). Other metrics that can be obtained from Maintainability Prediction MTTR software based on MIL-HDBK-472 include: Relyence Maintainability Prediction supports a wide range of maintenance and repair metrics. What Is Maintainability? Just a few of the numerous design considerations are standardization, accessibility, and modularity. NASA-TM-4628, Recommended Techniques for Effective Maintainability, also delves into the methodologies for designing highly maintainable systems. SonarQube helps you find your Code Smells and understand what’s wrong. Maintainability factors into availability by describing how downtime originates and is resolved. ‘Materials, including buff-colored brick, metal panels, glass and steel, create a positive visual impact and enhance the building's maintainability.’ ‘What's more, there are issues related to equipment maintainability, reliability, hardening pattern repeatability, and downtime.’ Understanding up front how maintainable software needs to be for a certain project is important, due to its impact on your architecture. This is the first article in the series, and we’re going to keep it basic and foundational by giving a quick and easy definition of reliability and maintainability. Often it is linked to the practice of more preventive and predictive maintenance (and less reactive maintenance). Maintainability is the ease with which a product can be maintained in order to isolate defects or their cause, correct defects or their cause, meet new requirements, make future maintenance easier, or cope with a changed environment. Jeff frequently writes for magazines related to safety, safety training, and training and frequently speaks at conferences on the same issues, including the Washington Governor's Safety and Health Conference, the Oregon Governor's Occupational Safety and Health Conference, the Wisconsin Safety Conference, the MSHA Training Resources Applied to Mining (TRAM) Conference, and others. The Maintainability is the probability of performing a successful repair or replace using the prescribed practices and procedures for serviceability and reparability. For example, something as basic as “remove screw” may be a basic task. Measuring software maintainability is non-trivial and there exists no single metric to measure it accurately. For example, if a component of your system fails, but can be repaired quickly, your overall downtime is minimized. Maintainability is the probability that maintenance of the system will retain the system in, or restore it to, a specified condition within a given time period. To keep in an existing state; preserve or retain: maintain one's composure. The reliability of a plant can be measured using MTBF (mean time between failure) and maintainability can be measured by MTTR (mean time to repair). MTTR (Mean Time To Repair) is the average time needed to repair a failed item. For these reasons, organizations invest not only in providing high reliability, but also in achieving high availability, which takes into account repair, or maintainability, metrics. The maintainability index is calculated as a factored formula consisting of Lines … The M(t) curve is a cumulative density function that provides an estimate of the probability of completing an arbitrary system repair action in a given amount of time. You can build up a library of these basic tasks and then reuse them within your analysis. MIL-HDBK-472 offers a detailed, analytical approach to assessing your maintenance-related metrics. Reliability is the wellspring for the other RAM system attributes of availability and maintainability. US Department of Defense 2005. In other words, maintainability measures the ease and speed with which a system can be restored to operational status after a failure occurs. We continually work on product development, new capabilities, feature enhancement, and ever improving our tools. To keep up or carry on; continue: maintain good relations. Don’t forget to download the free Guide to Online Maintenance Training below before you go. In this case, Maintainability Predictions are helpful by allowing you to complete an evaluation of your product prior to manufacture – while design changes that improve repair times are significantly less impactful. By improving usability and increasing performance, you can quickly gain an early advantage over sluggish competitors that are still firefighting software bugs of past and present. Replacing the air filters in your HVAC is a preventive action – you do this to avoid a HVAC system failure due to restricted air flow. There are many advantages to performing Maintainability Prediction analysis. Convergence Training and RedVector both offer online training solutions related to reliability and maintainability, and RedVector offers online courses that can be completed as part of the UT-RMC’s Reliability & Maintainability Implementation Certification (RMIC) program.

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