Industrial Maintenance Lecture# 1, Suhaib Ilyas

7/31/2019 Industrial Maintenance Lecture# 1, Suhaib Ilyas

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Suhaib IlyasClass# /Section: 10 / A


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A combination of management, financial, engineeringand other practices applied to physical assets in pursuitof economical life cycle cost.

Its practice is concerned with the specifications anddesign for reliability and maintainability of plant,machinery, equipment, building, and structures withtheir installation and replacement and feedback of

information on design, performance and costs.


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The total cost if an item throughout its life consisting ofinitial, maintenance and support cost etc


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A combinations of any actions carried out to retain anitem in or restore it to an acceptable condition

Acceptable Condition: The condition agreed for each particular usage. This

condition shall not be less than that demanded bystatutory requirements


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Maintenance necessary immediately to avoid serious

consequences


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Maintenance organized and carried out with forethought, control and record to a pre-determined plan iscalled as Planned maintenance

Maintenance that is carried out as pre-determinedintervals to other prescribed criteria intended to reducethe likelihood of an item not meeting an acceptablecondition is called as preventive maintenance


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Running maintenance is that which can be carried outwhile the item is in service

Maintenance that can ONLY be carried out when theitem is out of service


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Preventive maintenance initiated as a result ofknowledge of the condition an item from routine orcontinuous checking


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To restore an item to an acceptable condition by therenewal, replacement or mending of decayed ordamaged parts


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Maintenance actions intended to bring back an item toits original appearance or state

i.e. to carry out maintenance and restore the machine toits acceptable condition


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Extensive maintenance intended to property, building,equipment or a system etc, to bring it to currentacceptable condition often involving improvements.


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The ability of an item to perform a required functionunder stated conditions for a period of time.

This may be expressed as probability.


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A function of rapidity and ease with which maintenanceoperations can be performed to help preventmalfunctions or to correct them if they occur


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A comprehensive examination and restoration of anitem or a major part thereof, to an acceptable condition


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The fraction of a specified period for which an item iscapable of performing a specified function at aspecified level of performance is called as availability

Down time is that period of time during which an item isnot in a condition to perform its intended function


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UF:

The ratio of the period of actual use to availability

AF: The ratio of period of actual availability of

item/equipment to the total period of theplant/working area/factory etc


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A written or verbal report of failures, defects, shortcomings and other experiences which can be used toinfluence design, performance and costs


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Schedule

A comprehensive list of maintenance and itsincidence

Planning Deciding in advance the jobs, methods, materials,

tools, machines, labor, timings and time required formaintenance

Program A list allocating specific maintenance to specific

period


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Policy

A strategy within which decision on maintenance aretaken

Manual

Collected information and devices on themaintenance requirements of an item


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Documents

Industrial Maintenance Lecture# 1, Suhaib Ilyas