Skip to content

Extended parts life solution Alstom GT11D gas turbine

A fleet of Alstom GT11D liquid fuel gas turbines showed severe issues with premature erosion of the leading edge section of blades, causing them to prematurely fail.

Goals
  • Life Extension
  • Increase Power Output
Sectors
  • Power generation
Asset
  • Gas turbines
Extended parts life solution Alstom GT11D gas turbine

Project Overview

A customer operating a fleet of Alstom GT11D liquid fuel gas turbines showed severe issues with premature erosion of the leading edge section of blades, causing them to prematurely fail. The erosion was limited to the row 1 blades and vanes.

Key Challenges

Erosion was caused by a combination of operating on heavy fuel oil (HFO), the build-up of contaminants in the fuel adhering to the leading edge, & the increased temperature of the base material causing accelerated oxidation & premature failure.

The components were failing around the 5,000 Equivalent Operating Hours (EOH) mark. Primary factors effecting the damage of the components were fuel, contaminants & overheating

The EthosEnergy Solution

  • Through a root cause analysis, a corrective action plan was developed to repair the part
  • Wire eroded out the full leading edge section & replaced it with a machined section of upgraded cast base material
  • Directionally Solidified Rene 142 (DSR 142) alloy was used & is seen as a significant upgrade over manufactured alloy of equiaxed IN738
  • The replaced section had a higher oxidation resistance & was held in place by a high temperature braze

Project Highlights

The key highlights of the project.

Key Results

  • A significant extension in component life was achieved
  • Reduced capital expenditure without the need to buy new parts, opting to go with a repair instead of component replacement due to fallout

Find out more

Turning on potential

Whether you have a question about our services or capabilities, or how we can help you solve a challenge, we'd love to hear from you.
Enquiry Type

Is this your preferred language?

It looks like you are visiting us from [[COUNTRY]]. Would you like to switch to the [[LANGUAGE]] language version of EthosEnergy?

Object reference not set to an instance of an object.
LIVE - EDIT