Availability and Stock Rupture Estimation By Using Continuous and Discrete Simulation Models

Abstract

We propose a method to solve an Availability and Stock Rupture problem considering static and dynamic conditions. Information about failure and repair rates, dependence or independence of the blocks are considered, as well as knowledge about spare stock and Maintainability. The analysis is done, initially, using exponential processes, considering the transient solution by Matlab-Simulink. This analysis allows to evaluate the steady state solution and the main aspects that must be addressed through Discrete Event Simulation. We consider a situation in which it is possible to use two blocks, one in operation and one in the spare stock, with a single repairman. SLA (Service Level Agreement) contracts are common, which the parties involved sign and failure to comply with these contracts may result in a fine. An approach to improve the dimensioning of such systems in terms of their availability and Stock Rupture as close as possible to the real ones.