Maintenance, Repair and Operations or Maintenance, Repair and Overhaul (MRO), is fixing any sort of mechanical or electrical device should it get out of order or broken (repair) as well as performing the routine actions which keep the device in working order (maintenance) or prevent trouble from arising (preventive maintenance). The word mechanical can mean one of several things: A device or principle described as mechanical relates to a mechanism or machine, or the realm of Newtonian mechanics. ... The article on electrical energy is located elsewhere. ... A Device can be taken to mean: an electrical device designed to carry power, but not use it. ... Preventive maintenance (PM) has the following meanings: The care and servicing by personnel for the purpose of maintaining equipment and facilities in satisfactory operating condition by providing for systematic inspection, detection, and correction of incipient failures either before they occur or before they develop into major defects. ...

The European Federation of National Maintenance Societies defines maintenance as:

All actions which have as an objective to retain an item in or restore it to, a state in which it can perform the required function. The actions include the combination of all technical and corresponding administrative, managerial, and supervision actions.

In telecommunication, the term maintenance has the following meanings: Telecommunication is the transmission of signals over a distance for the purpose of communication. ...

1. Any activity, such as tests, measurements, replacements, adjustments and repairs, intended to restore or retain a functional unit in a specified state in which the unit can perform its required functions. In computer engineering, an execution unit is a part of a CPU that performs the operations and calculations called for by the program. ... Purpose is deliberately thought-through goal-directedness. ...

2. [For material], All action taken to retain material in a serviceable condition or to restore it to serviceability. It includes inspection, testing, servicing, classification as to serviceability, repair, rebuilding, and reclamation. Land reclamation is either of two distinct practices. ...

3. [For material], All supply and repair action taken to keep a force in condition to carry out its mission.

4. [For material], The routine recurring work required to keep a facility (plant, building, structure, ground facility, utility system, or other real property) in such condition that it may be continuously used, at its original or designed capacity and efficiency for its intended purpose. In telecommunication, the term facility has the following meanings: 1. ... Divisions Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum (a fern... The word ground has several meanings: The surface of the Earth Soil, a mixture of sand and organic material present on the surface of the Earth Ground (electricity), in electrical engineering, something that is connected to the Earth or at the voltage defined as zero (in the US, called ground... Look up system in Wiktionary, the free dictionary. ...

Source: from Federal Standard 1037C and from MIL-STD-188 and from the Department of Defense Dictionary of Military and Associated Terms Federal Standard 1037C entitled Telecommunications: Glossary of Telecommunication Terms is a U.S. Federal Standard, issued by the General Services Administration pursuant to the Federal Property and Administrative Services Act of 1949, as amended. ... MIL-STD-188 is a series of U.S. military standards relating to telecommunications. ... The Department of Defense Dictionary of Military and Associated Terms is a compedium of terminology used by the United States Department of Defense (DOD). ...

MRO software

In many organizations because of the number of devices or products that need to be maintained or the complexity of those systems, there is a need to manage the information with software packages. This is particularly the case aerospace (e.g. airline fleets), military installation, large plants (e.g. manufacturing, power generation, petrochemical) and ships. These software tools aim to help engineers and technician in increasing the availability of system and reducing costs and repair times as well help to reduced material supply time and increase material availability by improving the supplier chain communication. As MRO involves working with products, an organization’s resources, supplier and customers, MRO packages have to interfaces in to many enterprise’s business software systems ( PLM, ERP, SCM, CRM). One of the functions of such software is the configuration of bill of material, taking the components parts list from engineering (eBOM) and manufacturing (mBOM) and updating to “as delivered” through “as maintained” to “as used”. Another is project planning logistics, for example identifying the critical path on the list of task to be carry out (inspection, diagnose, locate/order parts and service) to calculate turnaround times (TAT). Other tasks that software can perform: Business software is generally any software program that helps a business increase productivity or measure their productivity. ... Product Lifecycle Management or PLM is a term used for the process of managing the entire lifecycle of a product from its conception, through design and manufacture to service and disposal. ... Enterprise resource planning systems (ERPs) are management information systems (MISs) that integrate and automate many of the business practices associated with the operations or production and distribution aspects of a company engaged in manufacturing products or services. ... It has been suggested that Bullwhip Effect be merged into this article or section. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A bill of material is a list of parts that go to make up an item. ...

• Planning operations
• Managing execution of events,
• Management of asset. Parts, tools and equipment inventories
• Knowledge base data on:
  • Maintenance service history
  • Serial numbered parts
  • Reliability data
    • MTBF Failure rate, MTTB, MTBR (mean time between repair)
  • Maintenance and Repair documentation and best practices
  • warranty, guarantee documents

Many of these tasks are address in Computerized Maintenance Management Systems (CMMS) Exponential failure density functions A failure rate is the average frequency with which something fails. ... Computerized Maintenance Management System (CMMS) is also known as Enterprise Asset Management. ...

See also

• restoration
• end user retro-engineering
• auto mechanic
• engine repair
• Preventive maintenance
• reliability engineering
• Product Lifecycle Management

in art, returning something to a better state, see art conservation and restoration In criminal justice, restoration is another term for restorative justice. ... End user retro-engineering (EURE) is the redesign of a product, not for resale, but by a consumer (end user). ... A mechanic works on the rear end of a car An auto mechanic is a mechanic who specializes in automobile maintenance, repair, and sometimes modification and design. ... Preventive maintenance (PM) has the following meanings: The care and servicing by personnel for the purpose of maintaining equipment and facilities in satisfactory operating condition by providing for systematic inspection, detection, and correction of incipient failures either before they occur or before they develop into major defects. ... Reliability engineering is the discipline of ensuring that a system will be reliable when operated in a specified manner. ... Product Lifecycle Management or PLM is a term used for the process of managing the entire lifecycle of a product from its conception, through design and manufacture to service and disposal. ...

External Links

• Maintenance Repair and Operations Forum and FAQ