The interaction plant upkeep arranging engineer for turning hardware is constantly burdened with the inquiry: When to Fix, Supplant basic or inadequately working part or carry out, complete "destroy" or gear update? Gas turbine upgrading is normally an all around arranged task with the required monitoring and materials prerequisites appropriately set up. The gas turbine upgrade arranging engineer should apply the ideas of Significant worth designing and Worth investigation to guarantee that the functional financial worth, post redesign, is offset with limitless and characterized gains to the hardware proprietor. In this first paper, one such field insight in responding to these inquiries is described.