Maintenance

The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure, and supporting utilities in industrial, business, and residential installations.^[1]^[2] Over time, this has come to include multiple wordings that describe various cost-effective practices to keep equipment operational; these activities occur either before^[3] or after a failure.

^ "Defense Logistics Agency". DLA.mil. Retrieved 5 August 2016.
^ "European Federation of National Maintenance Societies". EFNMS.org. Retrieved 5 August 2016. All actions which have the objective of retaining or restoring an item in or to a state in which it can perform its required function. These include the combination of all technical and corresponding administrative, managerial, and supervision actions.
^ Ken Staller. "Defining Preventive & Predictive Maintenance".

[1] "Defense Logistics Agency". DLA.mil. Retrieved 5 August 2016.

[2] "European Federation of National Maintenance Societies". EFNMS.org. Retrieved 5 August 2016. All actions which have the objective of retaining or restoring an item in or to a state in which it can perform its required function. These include the combination of all technical and corresponding administrative, managerial, and supervision actions.

[DPenn.PdM-3] Ken Staller. "Defining Preventive & Predictive Maintenance".

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