Safety analysis of manufacturing investment alternatives by using of the equality of the analysis charts

In order to select the economical investment project among the several alternatives, considering the future uncertainties is critical as well as considering the profitability of the project under the estimated parameter value. This paper considers a method for analyzing the profitability and safety of manufacturing investment alternatives under uncertainties. In the paper, the single-period problem is first discussed under the assumption mat unit sales price, sales volume(=production volume), unit variable cost and annual fixed cost are given as uncertain factors. The analysis chart which is able to compare the profitability and safety of the alternatives is introduced. Moreover, the equality between the analysis charts, that is, the property for changing the analysis chart to anomer one which ensures to evaluate the alternatives in the same manner is clarified. The paper extends the model to the multi-period investment problem with the acquired equivalent property. As a result, an analysis chart for evaluating the alternatives, which are comprised of initial investment cost, variable cost and annual fixed cost over the planning horizon, is proposed.