M. Sharifi - Department of Industrial & Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran.
MR. Shahriari - Department of Management & Accounting, South Tehran Branch, Islamic Azad University, Tehran, Iran.
Sh. Khoshniat - Department of Industrial & Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran.

Redundancy allocation problem is one of the most important problem in Reliability area. In this problem the reliability and availability of the systems maximized via allocating redundant components to sub-systems. a systems operates normally in its operational mode but fails in either opened or shorted modes. this paper presents a repairable k_out_of_n systems network model with common cause failures. We used Biographic Based Optimization algorithm for solving the presented problem.

availability, Short Circuit, Common cause failure, Repairable, Biographic Based Optimization algorithm