Value Packages

Advanced Technology Upgrades

GE’s gas turbine advanced technology upgrade programs are designed to enhance unit performance, produce significant performance benefits and yield attractive economic payback that add significantly to the bottom line for most customers. Gas turbine advanced technology upgrade are designed to improve efficiency, increase output, improve heat rate and improve the reliability and availability of power plant equipment.

Combustion Operability and Emissions Upgrades

Combustion system upgrades are available for all frame sizes to help customers improve their gas turbine's operability and emissions. The upgrades may include application of GE's highest technology DLN combustion systems that can provide turn-down to 40-50% load for some applications. Other upgrades allow customers to convert to differing fuel types or eliminate the need for steam injection where the steam may be more useful for an industrial application.

Firing Temperature Uprate

The designs of all hot gas path components (buckets, nozzles and shrouds) have been improved with advanced materials and improved cooling features. You can increase the firing temperature to improve efficiency and increase output or maintain the present firing temperature to increase reliability and availability.

Improved Cooling

Cooling path redesigns allow the installation of advanced components that require less cooling and have lower bulk metal temperatures. These advanced material designs and cooling features can contribute to improved efficiency, reliability and availability and increased output.

Sealing Techniques

Applying advanced sealing technologies improves parasitic leakage control. From brush seals and cloth seals to the optimized clearances of the sacrificial honeycomb seal, sealing technologies balance and minimize airflow leakage from the power production path.

Extendor™ Systems

Extendor systems are designed to increase the interval between combustion inspections, improving availability and reducing maintenance costs. While most gas turbines require combustion inspections every 8,000 hours, GE’s value-added solution moves combustion inspection intervals out as far as 24,000 hours.

Frame 5D Uprate

Since the MS5002 was introduced in 1970, technology advances have increased both the output and the efficiency of this machine. Due to continued strong customer interest, GE and GE Oil & Gas embarked on a joint development program in 1995 to further increase the output of the MS5002C. The Frame 5D advanced technology uprate is the result of that effort.

Upgraded Compressor

The most significant feature of the Frame 5D uprate is the replacement of the MS5002 compressor section with a 17-stage MS6001B design. This requires replacement of the compressor rotor, blading and casings. The increased airflow and pressure ratio increase associated with the upgraded compressor allows the firing temperature to be increased by 49 °F (9.5 °C) while maintaining the turbine hot gas path component temperatures at proven MS5002C levels.

Other Performance Improvements

We can increase output further by installing a new first-stage nozzle with a reduced throat area designed to optimize compressor performance. This further increases the compressor pressure ratio that, in turn, allows an additional 52 °F (11 °C) increase in firing temperature. Installing advanced seals on the high-pressure packing, number two bearing, and stage two shrouds can also improve performance by 13 percent.

Frame 3K Uprate

The MS3002K (Frame 3K) is a complete new uprate for the GE MS3002H/J/AT two-shaft gas turbine. The new version, called MS3002KHE, addresses issues which are of great importance for MS3002 users:

  • Thermal efficiency (heat rate decrease)
  • Power increase
  • Maintenance interval extension
  • Emission reduction
Technological Improvements

The first MS3002A frame model shipped in 1951 had a rating of 5000 horsepower and a thermal efficiency of 20.5 percent. The Frame 3K is rated at 16385 horsepower with a thermal efficiency of 29.1 percent. This major leap in performance is the result of continuous technological improvement in metallurgy and aerodynamics. Metallurgy improvements include superalloys, coatings and cooling and sealing techniques that permit higher firing temperatures. The application of advanced aerodynamics has resulted in the redesign of complex, high-performance geometry for axial compressor blades, turbine buckets and nozzles.

Refurbishment

The evolution of the MS3002 over such a long time period is the result of the strong industry acceptance due to its extremely high reliability and availability. Some machines have logged more than 300,000 hours. Many J model machines have exceeded 100,000 fired hours, and therefore require an extensive overhaul. The K model retrofit has a substantial overlap with the J model refurbishment, and provides a significant performance benefit with a limited incremental investment.

Advanced Technology Retrofit

This upgrade is an advanced technology retrofit that increases efficiency substantially while retaining the maximum number of original parts and footprint. The upgrade consists primarily of a new advanced compressor blading design, a new combustion system configuration that eliminates 90° elbows and LHE reinforced liners and new transition pieces with extended life capabilities and advanced seals proven in the latest GE Frame 7 and Frame 9 models.

All implementations maintain both the original casings and skid, thus retaining as much of the original configuration as possible. Implementing advanced seals within the gas turbine reduces leakages at the compressor end and through bucket and casing interfaces.

Value Packages

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