ABSTRACT
In order to determine system functions, functional requirements, functional failures, as well as cause and consequences of functional failures, the FMECA technique can be adopted.
2 MAINTENANCE
Nowadays along with the rapid development of industries in the world and organizations attempt for the continuity of production and also the increase of influence in the market, the decrease of the production cost and the attempt to set up the process of production, have turned to the most important challenges of production organizations. To reach to this goal continuity of production and also decrease of operation costs are set on the high agenda of production managers. (Swanson 1997). Maintenance costs are a major part of the operating costs of all manufacturing or production plants. Depending on the specific industry, maintenance costs can represent between 10 and 40% of the costs of goods produced.
