Availability Optimization for Screw Plant Based on Genetic Algorithm

ABSTRACT This paper deals with availability optimization for screw plant using genetic algorithm. Screw plant has four main subsystems, out of theses four subsystems, two subsystems are provided with cold stand by alternativeConsidering the exponential distribution for the probable failures and repairs, Mathematical formulation of the problem is done using probabilistic approach and differential equations are developed using Markov birth – death Process. These equations are then solved using normalizing conditions so as to determine the steady state availability of the concern plant.Then further genetic algorithm is applied to find optimal value for availability of concern plant and corresponding to this optimum value of availability, value of failure/repair rates of all subsystems of concern plant are calculated.