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MD&A Insight

Field Rewind with a Rotor Slot Dovetail Repair

Performing Rotor Slot Dovetail Repair

Mechanical Dynamics & Analysis (MD&A) recently completed generator field rewind with a rotor slot dovetail repair on a customer’s GE® 650,000 KVA generator field. The work scope was performed at the customer’s direction with regards to applicable Technical Information Letters. Incoming visual and mechanical inspections were first completed, as well as a runout inspection in […]

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Thermodynamic Analysis on a Steam to Combined Cycle Plant Conversion

Heat Balance Example | Thermodynamic Analysis

Mechanical Dynamics & Analysis (MD&A) experts recently performed a thermodynamic analysis to assist our client in converting their coal and natural gas plant to combined cycle operation. The customer was able to locate a gray market Gas turbine and Heat Recovery Steam Generator (HRSG). Our team modeled how each component would interact with one another, […]

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MD&A Company Video

Mechanical Dynamics & Analysis is a steam & gas turbine and generator full service provider.  MD&A began in 1982 as a small engineering firm supporting power generation companies with third party consulting services.  Since its inception, MD&A has maintained an entrepreneurial culture and has focused on outstanding customer service. As a result, over 35 years later, […]

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D11 Problems & Repair Solutions

D11 Bowed Rotor | D11 Problems & Repairs Solutions

The common GE® D11 steam turbine, a single-casing HP/IP design used extensively in combined cycle applications, is demanding increased focus during normal outages, and ongoing attention for reliability, efficiency, and plant safety. Fundamental reasons are intensified by market-driven calls for continued cycling and low-load operation. Units modified for higher efficiencies and compatibility with 7FA Gas […]

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D11 Retrofit Solutions in light of Early Life Expectancy 

D11 Retrofit

Relative to historical industry experiences, D11 steam turbines have come of age at an early stage in their lifecycle and are strong candidates for retrofit solutions.   The most common reasons reported to MD&A for prompting retrofit consideration include (1) reliability issues, (2) technology obsolescence and (3) changes within plant operating missions and steam cycles (e.g. […]

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Generator Flex Lead Replacement

Generator Flex Lead Replacement

Mechanical Dynamics & Analysis (MD&A) experts recently performed a Generator Flex Lead Replacement.  At the customer’s request, the Technical Information Letter (TIL) was completed. MD&A provided all the hardware and replaced all flexible leads. During the disassembly and replacement of all flexible leads, it was observed that some of the assemblies were too short. The […]

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Welcome Integrated Combustion Solutions Customers

Mechanical Dynamics & Analysis LLC (MD&A) is pleased to announce the addition of gas turbine fuel nozzle repair, testing and manufacture to its portfolio of services. Integrated Combustion Solutions (ICS), a leader in the production, repair and refurbishment of Gas Turbine fuel nozzles, will now operate as a fully integrated division of MD&A. From its […]

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Tackling Emerging Issues with 7FA Compressor Blade & Vane Replacement

Frame 7FA compressor blade replacement

Mechanical Dynamics & Analysis (MD&A) recently completed compressor blade replacement work on two 7FA units, including full inspections, and ongoing operational recommendations. We were responsive to emerging issues, scope change, and flexible in supporting the customer’s needs. MD&A was mobilized to address suspected fuel nozzle leaks on the customer’s unit 1 gas turbine. The unit […]

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Petro Vietnam’s Rapid Bearing Repair and Journal Machining

bearing repair

At Petro Vietnam Vung Ang 1 Thermal Power Plant, Mechanical Dynamics & Analysis (MD&A) experts recently repaired damaged babbitt bearings and refurbished journals for a customer on a steam turbine-generator with the unit in an assembled (rotor-in) condition. The unit was forced from service due to turbine bearing failures. In a quick turnaround, journal refurbishment […]

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