Abstract:

This paper deals with the performance evaluation of both a production system through the measurement of its average production availability over a given period and its constitutive parts through their respective contributions to the overall production loss. To perform such measures, a model of the system behaviour must be built and exploited. In this paper this behaviour (nominal, degraded, failed) is modelled by means of Petri nets (PN), by taking into account the upstream and downstream effects induced by the failure of a given component on the production level of other components, and then, on the production level of the whole system, i.e., on its performance level. The magnitude of these effects is closely linked to the so-called importance of the components which have created them. The notions of production availability and component importance are presented and illustrated in this paper on the basis of a simple but not trivial example of an oil production system.
Received on November 08, 2009, revised on December 22, 2010
References: 24