Gas Turbine Optimization Package (GTOP) and Combustion Upgrade Packages

PSM’s GTOP and combustion upgrade solutions help operators get more from their gas turbines—more output, more efficiency, and more flexibility. Whether you’re focused on emissions compliance, lifecycle cost reduction, or performance gains, our upgrade packages can be tailored to your site’s operating goals.

Operational Flexibility

Unlock higher performance or extended maintenance intervals—without compromising reliability.
With GTOP, operators can choose between Maintenance Mode and Performance Mode, allowing you to adapt based on operational or seasonal demands:

• Maintenance Mode: Extend hot gas path inspection intervals up to 32,000 or even 40,000 hours.
• Performance Mode: Increase power output (up to 7%) and heat rate (up to 3%).
• AutoTune Compatibility: Seamlessly switch between modes for optimal flexibility.

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Optimized Combustion Parts

PSM’s DLN combustion systems have been upgraded for better emissions control and durability. New options offer NOx levels below 5ppm or 9ppm, depending on the selected system.

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7B-EA Standard and Upgrade Options

Our structured GTOP packages include upgrades to combustion and hot gas path components, providing performance near or above OEM standards. Highlights include:

• Extended Component Life: Inspection intervals up to 32,000 hours in Maintenance Mode.
• FlexSuite™ Counters: Easily switch between maintenance and performance operation.
• High Firing Capability: Optional upgraded hardware for peak output.
• S1 and S2 Bucket Upgrades: From OEM to PSM’s advanced alloys for improved durability and creep resistance.

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7F Upgrade Packages

GTOP3.0
Installed during a standard HGP outage, this package enhances efficiency and emissions performance:

• Redesigned transition piece and flow sleeves for reduced pressure drop
• Improved cooling features and thermal barrier coatings
• ≤9ppm NOx with PSM AutoTune
• Drop-in compatibility with standard 7F hardware

GTOP3.1
Builds on GTOP3.0 with aerodynamic upgrades to the R0, S0, and S1 compressor stages:

• Improved inlet flow for better efficiency
• Components designed with proven PSM mechanical integrity
• Optional upgraded 1st & 2nd stage buckets for durability

Shared Benefits of GTOP3.0 & 3.1

• Hot gas path inspection intervals extended to 32,000 hours
• Enhanced performance without sacrificing lifecycle
• Flexible operation mode switching

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501F GTOP Offerings

Tailored packages for MHI and Siemens-based 501F units:

GTOP6

• R16 compressor blade with IGV control
• Robust 4th blade and ring segment
• Enhanced durability and reduced flow losses

GTOP7

• Modular vane design
• Advanced coatings and cooling for vanes and blades

GTOP8

• GTOP7-based solution optimized for MHI 501F turbines

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