THE FEASIBILITY STUDY OF ALLOY REPLACEMENT OF THE FIRST STAGE ROTATING BLADE IN MITSUBISHI GAS TURBINES AT RAY, GHOM AND KAZEROON POWER PLANTS

The first stage rotating blade of Mitsubishi MW-701B and MW-701D gas turbines at Ray, Ghom and Kazeroon power plants are of high price and short life-time. Selection of another alloy as a replacement, without noticeable changes in blade design, is one of the most practical methods for preventing this problem. The feasibility of this method is disccused and a superior alloy is suggested.

Keywords:

Gas Turbine Blades , Life Improvement , Alloy Replacement , Udimet 520 Alloy , IN 738LC Alloy