Value Packages

Advanced Design Steam Path

In 1995, GE introduced the advanced design steam path (ADSP) retrofit for application in GE-designed large steam turbines. Designed to enhance unit performance through improved heat rate, increased output and sustained efficiency, the ADSP retrofit can produce significant benefits with attractive economic payback.

Culminating ten years of development, the ADSP retrofit incorporates the most sophisticated engineering enhancement features, including advanced vortex compound lean nozzle partitions, improved leakage control and solid particle erosion (SPE) resistance improvement. Coupled with our unique and integrated installation and repair service capability, the customized ADSP package provides years of reliable, efficient and trouble-free operation.

This program offers the following unique opportunities:

  • Improves unit performance
  • Reduces maintenance and operation costs
  • Can reduce stack emissions for the same power output
  • Offers a cost-effective alternative to purchasing new generation capability
  • Provides complete design and installation packages
  • Offers the opportunity to provide total plant uprates
Aerodynamic Blading Designs

Achieved through the use of advanced vortex compound lean buckets and nozzles and validated by computational fluid dynamics modeling, aerodynamic blading designs lead to improved flow distribution, which can improve efficiency and increase output.

Steam Path Redesign

GE steam path redesigns are based on successful impulse construction, state-of-the-art mechanical design procedures and computer modeling. We determine the minimum allowable stage root diameters to optimize the number of turbine stages. Smaller stage diameters and additional stages improve stage aspect ratios, lower steam velocities, and contribute to reduced nozzle, bucket and end wall losses to improve efficiency and increase the output of the steam turbine unit.

Leakage Controls

We improve leakage control by applying advanced sealing technologies. We use multi-tooth radial bucket tip spill strips and shaft seals and optimized clearances and steam balance holes to improve efficiency and increase output by minimizing steam leakage into the steam path.

Solid Particle Erosion Resistance

Nozzle partitions are designed to reduce the number of particle impacts on the trailing edge pressure surface, providing greater erosion resistance, which in turn improves the reliability and availability of power plant equipment.

Value Packages

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