Similar to Maintenance Task Groups, FD&I Outputs are typically defined as a group of tasks performed together as a unit. An example corrective action would be replacing a condenser unit in your HVAC system when it fails. Maintainability is an important aspect in overall system continuous improvements efforts, along with reliability, safety, and other factors vital to overall product viability. As a result, we’ll be writing a series of articles to introduce you to some key concepts in reliability and maintainability. Along with this basic task, you assign the time it takes to perform the task. This comprehensive handbook offers mathematical equations to assess the most commonly used repair measures for an accurate overview of your system maintainability profile. By providing an organized and efficient approach to analyzing your system maintainability, you gain more insight and can proactively work towards improvement. 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. Maintainability is a measure of the difficulty to repair the system. We’ve recently partnered with our friends at the University of Tennessee (Knoxville) Reliability & Maintainability Center to offer reliability & training opportunities in both instructor-led and online formats (more about that below). In many cases, maintainability is a part of continuous improvement objectives. Industrial Maintenance Training Solutions, FREE Guide to Selecting Online Maintenance Training, American Society of Quality for that reliability definition, the American Society of Quality, maintainability is defined, UT-RMC’s Reliability & Maintainability Implementation Certification (RMIC) program, Client Testimonial Video: Ring Power & Amanda Anders, Effective EHS Training: A Step-by-Step Guide, Online Safety Training Buyer's Guide Checklist, Online Contractor Orientation Buyers Guide, Learning Management System (LMS) Buyer's Guide. Maintainability is all about how easy it is to fix a bug found in the application. b. For example, modularity addresses the ability for removal and replacement by smaller units (modules) that should be built into the machinery and equipment, including: Plants benefit in many ways from increasing reliability and maintainability. Similar to the way Reliability Prediction evaluates failures, Maintainability Prediction evaluates repairs. You can combine all those Maintenance Tasks into a single Maintenance Task Group to use in your analysis for quick and consistent measurement. When evaluating system availability, both types of actions need to be taken into account for accurate metrics. The maintainability testing shall be specified in terms of the effort required to effect a change under each of the following four categories: Corrective maintenance – Correcting problems. The most commonly used standard for performing Maintainability Predictions is MIL-HDBK-472, titled Maintainability Prediction. The origins of contemporary reliability engineering can be traced to World War II. 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. Quantifying and tracking maintenance activities is a critical component in ensuring your reliability and quality system goals are attained. Software maintenance is a phase in the software development cycle that starts after the customer has received the product. 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). 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. There are also discussions and materials available centering on the idea of Design for Maintainability (DFM). You can start your prediction with as much information as you have, get a quick, early assessment, then refine your analysis as your design matures to get a more and more accurate assessment. Maintenance Tasks, Maintenance Task Groups, FD&I Outputs, and Maintenance Groups can be considered the building blocks for the Maintainability Prediction analysis. Maintenance Groups define how a repair action is performed on a group of items, rather than on a single item. In addition, you can define a task group, or multiple tasks performed together to complete a repair action, such as “replace motherboard”. ); therefore, the ability to maintain a software application with respect to safety is essential. Once your maintenance activities are defined, you can then proceed to the central part of your analysis: computing maintenance metrics. Maintenance is the act of providing the service of checking, repairing or replacing. maintainability The ability of an item, under stated conditions of use, to be retained in or restored to a state in which it can perform its required functions, when maintenance is performed under stated conditions and using prescribed procedures and resources. In this manner, Maintainability Predictions become a key element in your continual improvement process. Download this free guide to discover everything you need to know to select and use online maintenance training, including courses, learning management systems, and providers. 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! The calculations are based on the tasks needed to complete a maintenance activity and their associated times. Jeffrey Dalto is an Instructional Designer and the Senior Learning & Development Specialist at Convergence Training. To keep up or carry on; continue: maintain good relations. By evaluating all the corrective and preventive maintenance actions across your system, a Maintainability Prediction analysis can provide insight into the activities or components that are causing long system downtimes. 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. 4. a. Understanding up front how maintainable software needs to be for a certain project is important, due to its impact on your architecture. MIL-HDBK-470A is a Department of Defense (DoD) handbook entitled Designing and Developing Maintainable Products and Systems that includes a wealth of information to guide you in designing with maintainability in mind. 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. 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. 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. Extensibility of a system describes how easy it is to incorporate new features into it. See MAINTENANCE. 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. Just a few of the numerous design considerations are standardization, accessibility, and modularity. SonarQube helps you find your Code Smells and understand what’s wrong. But do you know the differences between them? Maintainability Prediction analyses support the ability to define any type of maintenance activity that has an impact on your overall system uptime. Maintainability is a designed-in parameter that should be done when designing a piece of equipment/machine. Maintenance actions are defined by a list of basic Maintenance Tasks that define the procedure for repair or maintenance action. maintainability the ability of a product or component to be kept in a state in which it can perform its required function when maintained. In other words, maintainability measures the ease and speed with which a system can be restored to operational status after a failure occurs. Fresh on the heels of[...]. The term maintainability corresponds to the ability to update or modify the system under test. As a result, we’ll be writing a series of articles to introduce you to some key concepts in reliability and Maintainability.. Maintenance activities can be corrective, meaning they are performed in order to fix a failure, or preventive, meaning they are performed in order to keep your system in good operating condition to avoid a fault. Download Now Your code comes out smelling like a rose. 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. Availability is the probability that the system is operating satisfactorily at any time, and it depends on the reliability and the maintainability. Typically, this analysis is done using a software tool designed for Maintainability Prediction. This article is a collaboration between the University of Tennessee Reliability and Maintainability Center (RMC), Convergence Training, and RedVector. 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. US Department of Defense 2005. Four Elements of Maintainability Prediction. There, I said it. Some of the commonly used maintainability engineering terms are shown on maintainability function, M(t), illustrated below. The discipline’s first concerns were electronic and mechanical components (Ebeling, 2010). Plus, check out our recorded webinar on maintenance, maintainability, organizational learning, and continuous improvement. Dictionary of Military and Associated Terms. Also known as availability, reliability, and serviceability – usually for computer-related hardware and software – the three are very different concepts. 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