Archives

Rotor Steeple Indications and Diaphragm Repairs

Mechanical Dynamics & Analysis (MD&A) experts recently completed steampath inspection and repair services for a customer during a major overhaul. The Alstom® steam turbine consisted of an HP/IP turbine (stages 1-15) and a single flow LP turbine (stages 16-21). A detailed incoming inspection was performed for the HP/IP and LP rotors and found relevant indications […]

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Coordinated 7FA Hot Gas Path and 7FH2 Generator Inspection and Repair

Mechanical Dynamics & Analysis (MD&A) completed a carefully coordinated 7FA gas turbine hot gas path inspection, 7FH2 generator inspection and repairs in just 19 days, providing all services, labor, and parts. The customer contracted MD&A to perform the inspection and emergent repairs on a tight schedule. Our industry experts completed the work on time maintaining […]

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Alstom® Generator Pole to Pole Connector Modification

The legacy Alstom® Topair WX/Y23Z and WX/Y21Z generator fleets can experience quality issues with the pole to pole connectors. Specifically, indications of cracking have been found on the braze interface and the pole to pole connectors themselves. This condition has affected the 60Hz 23Z fleet and both the 50Hz and 60Hz 21Z fleets. These issues […]

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New Gas Turbine Parts

An industry leader in producing new gas turbine parts, our San Antonio Service center uses insights gathered from decades of repair observation and analyses to capture performance opportunities that are disregarded in many OEM parts. Our experience in component repair is the foundation for our success in new part development. It is an ISO-Certified, F-Class […]

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Gas Turbine Component Repair

MD&A’s San Antonio Service center is an industry leader in gas turbine component repair. Our facility has leading-edge equipment and repair techniques with proven expertise on multiple frame gas turbine hot gas path and combustion components. It is an ISO-Certified, F-Class Repair Center of Excellence. View our Gas Turbine Component Repair video below and then call MD&A […]

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MD&A Solution for 7FH2 & 324 Stator End Winding Dusting Issues

Over the past decade, there have been several reports of dusting on the GE® 7FH2 & 324 stator end-winding systems. The dusting has been found on earlier and late model generators. GE®  7FH2 and 324 type generators have a history of end-winding dusting as a result of materials used during manufacturing. A major contributor to […]

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Bucket and Thrust Collar Replacement

In a forced outage for a customer’s steam turbine, MD&A’s experts at the St. Louis Turbine-Generator Repair facility successfully replaced four rows of buckets (turbine blades) in the HP & LP sections, replaced the thrust collar, and performed other repairs on both the rotating and stationary components. This meticulous inspection, rebuild and installation illustrates how […]

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Steam Turbine Reheat Stop Valves Restoration

Mechanical Dynamics & Analysis (MD&A) performed a complete reheat stop valves restoration along with one LP stop valve. These RH stop valves on a Siemens Westinghouse® unit had not been fully restored for 14 years.   Pre-outage planning took place between our team and key plant personnel.  Upgraded valve materials were designed and manufactured, and […]

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Mechanical Dynamics & Analysis LLC   |   19 British American Blvd., Latham, NY 12110   |   P (518) 399-3616   |   F (518) 399-3929