PARTS FRAME 7FA.03+ - MDA Turbines

ONE CALL. ONE SOURCE. POWERFUL SOLUTIONS.

• Increase output by 8 MW with longer 32,000 hour/1,200 start intervals

• Extend service intervals or increase output (customizable option based on customer need)

This upgrade combines newly designed 1st stage components with previously upgraded 2nd and 3rd stage hardware.

PART

S FRAME 7FA.03+Enhanced 7FA.03 Turbine Upgrade

MECHANICAL DYNAMICS & ANALYSISFor more information on this product or service please contact MD&A at 210-256-5107 or www.mdaturbines.com

Formerly PW Powers Systems’ IGT division, an industry leader in parts repair and manufacturing, the MD&A San Antonio Service Center has cutting edge equipment and repair techniques with proven expertise on multiple frame gas components.

Our enhanced Frame 7FA.03+ upgrade increases megawatt output while reducing customer cost. Extensive testing on existing OEM components culminates in an improved version and enhanced design; The upgrade has greater flexibility, extended service life, and customized maintenance intervals. It comes complete with the same proficiency and service the world has come to expect from MD&A.

Maximizing turbine capacity and reducing operational costs, the 7FA.03+ parts:

Design Advantages of the 7FA.03+ 1st Stage

1st Stage Bucket • Improved cooling distribution at the tip, trailing edge, and platform reduces peak metal temperature

• Cast-in tip cap eliminates possibility of cap failures and further improves oxidation life at tip

• Redistributed cooling airflow actively cools the platform and eliminates cracking

1st Stage Nozzle • Singlet design incorporates a full gas path TBC for improved oxidation life and airfoil temperature reduction

• Improved airflow holds NOx steady with increased firing temperature

1st Stage Shroud • Improved airflow configuration combats leakage and dedicates targeted airflow to improve oxidation life

• Proven upgraded heat transfer patterns on shroud tile inner wall

Firing Temperature Increase Relies on Existing MD&A Upgraded Designs

2nd Stage Bucket • Improved proprietary equiaxed alloy versus OEM DS alloy provides interlocking grain strength at tip shroud while keeping creep strength in airfoil

• Optimized tip geometry and fillet shape for improved creep life

• Enhanced MCrAlY coating and fully TBC-coated airfoil for oxidation resistance

2nd Stage Nozzle • Improved alloy with full metallic and TBC coating on all surfaces to reduce metal temperatures and fatigue

• Advanced fillet to platform geometry to improve creep life

• Diaphragms changed to SS310 alloy to reduce oxidation and minimize associated repair costs

3rd Stage Nozzle; 2nd and 3rd Stage Shrouds • Demonstrated reliability and repairability

• 3rd stage nozzle diaphragms changed to 310SS alloy to reduce oxidation and minimize repair costs

FRAME 7FA.03+ UPGRADE

For more information on this product or service please contact MD&A at 210-256-5107 © Mechanical Dynamics & Analysis LLC 2018

MECHANICAL DYNAMICS & ANALYSIS6948 Fairgrounds Parkway • San Antonio, TX 78238 • Ph: (210) 256-5107 • www.MDAturbines.com