MD&A offers an outstanding array of field machining services and steampath repair equipment for use on-site. Our machining capabilities include the ability to on-site or in-shop repair horizontal joints on turbine casings, damaged valves, rotors, and nearly any rotating or stationary turbine-generator component.
We can address nearly any machining project within our 275,000 square foot Turbine-Generator Repair Facility, located in St. Louis, MO. Our machinists are well-trained, seasoned professionals with in-depth knowledge of many of the strict tolerances, procedures, and specifications required to complete each repair.
Capabilities
- Removal & Replacement of Studs
- Re-Rounding of Shells & Critical Fits
- Restoration of Casing Bolt Threads
- Horizontal Joint Welding & Machining
- Complete Snout Bore Restoration
- Inlet Nozzle Refurbishment
- Boring Bar Machining of Fits & Seals
- Packing Box Head Restoration
Field Machining Services
- Portable Machine Shops
- In-situ journal machining supporting diameters from 5” – 24”
- Automated Bore Welding of Stud Holes
- Destructive stud removal with spade drills and taps on hand to support up to 7.5” diameter
- Boring Bar machining
- Main steam inlet flange facing
- Horizontal joint restoration
- Nozzle plate removal / replacement accompanied by nozzle seal face machining
Learn more about the other Steam Turbine Repairs that MD&A offers.






