s.j Sadjadi - Department of Industrial Engineering, Iran University of Science and Technology, Tehran, Iran
a.a Tofigh - Materials and Energy Research Center, Karaj, Iran
r Soltani - Department of Industrial Engineering, Iran University of Science and Technology, Tehran, Iran

One of the primary concerns in any system design problem is to prepare a highly reliable system with minimum cost. One way to increase the reliability of systems is to use redundancy in different formssuch as active or standby. In this paper, a new nonlinear multi- objective integer programming modelwith the choice of redundancy strategy and component type is developed where standby strategy is of cold type. In the proposed model, system’s reliability is maximized along with minimizing system’s cost and weight. The proposed model contributes to the literature by determining the redundancystrategies concurrently with determining redundancy levels and component types. The multi-objectivemodel is solved using the mathematical compromise programming technique for different Lp metrics and produces different Pareto solutions.

Redundancy Allocation,Cold-Standby Redundancy,Active Redundancy,Multi-objective,Compromise Programming