Independent of Two Grade System in Manpower System

In any organization the required staff strength is maintained through new recruitments. The exit of personnel from an organization is a common phenomenon, which is known as wastage. Many stochastic models dealing with wastage are found in Bartholomew and Forbes (1979). In this paper the model it is assumed that the threshold level of the breakdown cannot be extended by means of transfer of personnel from one grade to other. In short, it is assumed that transfer of personnel is not possible so that the two grades are independent and the system fails if the depletion in any one of the two grades crosses the so called threshold level individually. Hence the minimum of the thresholds of two independent systems becomes the overall threshold.