CASE STUDY 07 10 The customer is an IPP from Southern Africa, generating over 500 MW of power. It was operating a Turbine Generator Set which was commissioned in 1956. Post overhauling, a new rotor was replaced in the Turbine. The blades of one row of this rotor broke within 2 weeks of operation. This also led to vibration and damage to the adjacent rows. CHALLENGE The challenge was to study the reasons of such failure and redesign the blades to ensure that this does not recur. Triveni Turbines was given a deadline of 3 months to complete the project. SOLUTION The blade design was studied in detail to identify the reasons for the breakage and subsequently necessary design changes were made to ensure that the same does not recur. The rotor has now been put into operation and is

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