What can upgrading do for you?

GE’s hot gas path interval extension upgrade was developed to extend the duration between planned maintenance inspections, which can increase the availability of your gas turbine and reduce maintenance costs.

How we get you there

Advanced sealing options

  • Reduce air leakage
  • Tolerant of misalignments
  • More durable than labyrinth seals
  • +500 applied as retrofits since 1999

Hardware improvements

  • Stage 1
    • Perimeter-cooled stage 1 bucket
    • Improved stage 1 shroud
    • Stage 1 shroud abradable coating
  • Stage 2
    • GTD-222* alloy stage 2 nozzle
    • Interstage brush seal
    • Creep-resistant Stage 2 bucket
    • Honeycomb shroud blocks
  • Stage 3
    • Honeycomb shroud blocks
    • Advanced aero stage 3 nozzle
    • Advanced aero stage 3 bucket

Advanced gas path

  • More power output, improved efficiency and higher exhaust energy
  • Redesigned hardware for longer intervals at higher firing temperature

Other Options

  • High-pressure packing sealing improvement
  • High-speed load gear
  • Increased firing temperature
  • Increased IGV angle

Contact us

Want to learn more about our hot gas path interval extension upgrade?