Today, concepts such as maintenance, fault prevention, etc. They are considered and analyzed already during the design of a new machine. The occurrence of a fault can in fact lead to significant waste of money, then you must try to predict and minimize possible. In addition to the economic damage to the replacement of the affected component is has a number of indirect costs such as lost production / service delivery, poor product quality, reduced production volumes, delayed deliveries and so on.

It is therefore essential to provide a detailed plan preventive maintenance to minimize the probability of failure. Traditionally, maintenance is born with two main objectives: to restore functionality interrupted following the onset of faults and prevent or limit the occurrence of faults and / or the impact on the functionality of the system. Over the years, however, the term ‘maintenance’ has undergone various mutations and currently the objective of maintenance is to maximize the useful life of the machine with the minimum overall cost trying to reduce the duration and frequency of faults.

The design of a machine must therefore take into account the type of service which will apply; if the maintainer is equipped to operate in a predictive, the machine must permit the insertion of the instrumentation for the reliefs, or integrated on the machine. Maintenance of condition (Condition Based Managment or CBM) is an alternative to the planning of measures to certain deadlines, being linked to the knowledge of the current state of the system. This results in an increase in the availability and security of the system and a reduction in costs. In addition to information about the status of a component or system, the maintenance of condition requires knowledge of the mode of failure and degradation, condition monitoring in operation, the timely detection and identification of fault conditions, degradation and predictive failure and the ability to predict the ‘remaining useful life’ starting from the results of the monitoring.

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