Contents


*by Segundo Moisés Toapanta Toapanta and Luis Enrique Mafla Gallegos*

Preface

Industries require maintenance to ensure the correct operation of engines, components, structures, etc. Any failure, i.e. termination of the ability of an item to perform a required function, generates downtime, costs, risks for personnel, etc. High competitiveness in the current industry does not lead these failures to

information, from qualitative and quantitative point of views.

the correct tasks is called maintenance supportability.

other cases it is called immediate corrective maintenance.

There are a large number of maintenance types:

generally by sensors, testing, and analytics.

vals or use of an item.

established previously.

item condition to avoid failure.

Advances in information and communication systems, together with technologies, lead the industry to incorporate new sensors, condition monitoring systems, etc. They also require advanced analytics to format, save, and analyze these signals and

To reduce failure occurrence probabilities, a correct maintenance task is required. British Standard, BS EN-13306:2017 defines maintenance as "managerial actions during the life cycle of an item intended to retain it in, or restore it to, a state in which it can perform the required function. Technical maintenance actions include observation and analyses of the item state (e.g. inspection, monitoring, testing, diagnosis, prognosis, etc.) and active maintenance actions (e.g. repair, refurbishment)." Correct maintenance support for a maintenance organization to carry out

Corrective maintenance is the most common type, and is done when the failure appears. When it is delayed it is defined as deferred corrective maintenance; in

Preventive maintenance is done at certain times or according to criteria to reduce the probability of failure. Predetermined maintenance is set according to time inter-

Scheduled maintenance is done as predetermined maintenance or in a time schedule

Condition-based maintenance is carried out with regard to the item status and is set

Predictive maintenance is the maintenance task done according to the predicted

According to EN 13306:2010, maintenance management is defined as "all activities that determine the maintenance objectives, strategies and responsibilities, and implementation of them by such means as maintenance planning, maintenance control, and the improvement of maintenance activities and economics." The maintenance strategy is set to achieve objectives, fixed by costs, availability, safety, reliability, etc. The maintenance strategy should be set by maintenance management from a responsibility point of view, considering availability, safety of personnel,

the firms.
