Operational Research (OR) is an interdisciplinary branch of applied mathematics and science that used methods such as mathematical modelling, statistics, algorithm, to arrive the optimal or suitable solution of a copmlex problem. It leads to managements of large systems includes men, machines, fuctories, industry, economics, money in industry, material and so on. Quality control is the activity of checking that products are of an acceptable standard and it is extendable to other feilds also. Reliability can be expressed as the probability that given system will perform it required function under specied condition for a distinct period of time. It is clear that a signicance connection can be exist between these criteria, and sometimes are necessary to each other. So links of them is noticeable. The operational research has a long story in the solving the life problems. It is wellknown that OR rst came into using in UK during world war I and in world war II about 200 operational research scientists worked as analysis engineer for solving several problems related to management radar and bombing and so on.

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