The paper describes the availability analysis of sole pasting system in a shoemaking unit. The components/subsystem of the system discussed in the mathematical model presented in this paper failed either directly from full capacity working state or indirectly through partial working state. These subsystems were subjected to both corrective as well as preventive maintenance. The failure and repair rates of these components/subsystems were independent and constant. The problem was formulated using probability consideration and Markov modeling. The system of equation governing the working of system was solved using normalizing condition and recursive method. The study helps in finding the crucial factors and analyzing their effect on the availability.

Global competitiveness has increased the demand for highly automated production system. The operation and aging of these systems gradually reduce their performance, reliability and safety. Therefore, maintenance of such system is very essential so that they may be available for maximum possible time and meet the customer requirement. This paper discusses the effect of ideal and faulty Preventive Maintenance (PM) on the availability of the system. The primary goal of PM is to prevent the failure of the system before it actually occurs. Ideal and efficient PM is designed to preserve and enhance the system reliability by replacing the worn components before their actual failure. Faulty PM means operators have damaged the machine or replaced machines do not perform properly. Corrective Maintenance (CM) is carried out to restore the system from failed state to working state. Several authors have addressed the PM systems. Garg and Singh (2010a; and 2010b) computed availability of crankcase manufacturing in a 2-wheeler automobile industry and block board system under preemptive priority discipline. Kumar et al. (1988) calculated the state probabilities of a complex system having four types of components with preemptive priority repair. Goyal et al. (2009) found the availability of a part of rubber manufacturing production system under preemptive priority repair. Zhang (1996) discussed the stochastic behavior of an (n+1) unit standby system under preemptive priority rule and found the expression for steady as well as time-dependent state of the system. Kumar and Singh (1989), Gupta et al. (2004), Modgil et al. (2010; and 2011) and some other researchers also found important result parameters for various industrial systems. Barlow and Hunter (1960) discussed about the optimal maintenance policies for industrial systems.

Science and Technology Journal, Seismic Evaluation of Flat Slab Buildings, Flat Slab System, Finite Element Method, Wide Column Model, Design parameters, Static Linear Analysis, Equivalent Frame Method, Nonlinear Analysis, Flat Slab Structures, Equivalent Frame Method.