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 860-781-3152 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, andplatform reduces peak metal temperature
• Cast-in tip cap eliminates possibility of cap failures and
furtherimproves oxidation life at tip
• Redistributed cooling airflow actively cools the platform
andeliminates cracking
1st Stage Nozzle • Singlet design incorporates a full gas path
TBC for improvedoxidation life and airfoil temperature
reduction
• Improved airflow holds NOx steady with increasedfiring
temperature
1st Stage Shroud • Improved airflow configuration combats
leakage and dedicatestargeted airflow to improve oxidation life
• Proven upgraded heat transfer patterns on shroudtile inner
wall
Firing Temperature Increase Relies on Existing MD&A Upgraded
Designs
2nd Stage Bucket • Improved proprietary equiaxed alloy versus
OEM DS alloyprovides interlocking grain strength at tip shroud
while keepingcreep strength in airfoil
• Optimized tip geometry and fillet shape for improvedcreep
life
• Enhanced MCrAlY coating and fully TBC-coated airfoil
foroxidation resistance
2nd Stage Nozzle • Improved alloy with full metallic and TBC
coating on allsurfaces to reduce metal temperatures and fatigue
• Advanced fillet to platform geometry to improve creep life
• Diaphragms changed to SS310 alloy to reduce oxidation
andminimize associated repair costs
3rd Stage Nozzle; 2nd and 3rd Stage Shrouds • Demonstrated
reliability and repairability
• 3rd stage nozzle diaphragms changed to 310SS alloy to
reduceoxidation and minimize repair costs
FRAME 7FA.03+ UPGRADE
For more information on this product or service please contact
MD&A at 860-781-3152 © Mechanical Dynamics & Analysis LLC
2018
MECHANICAL DYNAMICS & ANALYSIS6948 Fairgrounds Parkway • San
Antonio, TX 78238 • Ph: (860) 781-3152 • www.MDAturbines.com
