Mellal, Mohamed ArezkiAdjerid, SmailBenazzouz, DjamelBerrazouane, SofianeWilliams, Edward J.2016-05-222016-05-2220131785-8860https://dspace.univ-boumerdes.dz/handle/123456789/2857The technological obsolescence of industrial systems is characterized by the existence of challenger units possessing identical functionalities but with improved performance. This paper aims to define a new approach that makes it possible to obtain the optimal number of obsolete industrial systems which should be replaced by new-type units. This approach presents a new point of view compared with previous works available in the literature. The main idea and the originality of our approach is that we apply a genetic algorithm (GA) by considering the failure frequency, the influence of the environment/safety factors of the old-type systems and the purchase/implementation cost of the new-type units. These parameters are introduced in order to optimize this type of replacement in the context of engineeringenTechnological obsolescenceIndustrial systemsReplacement policyFailure frequencySafety/environment factorsGenetic algorithm (GA)Article