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Steam Turbine

Structured Remaining Life Assessment

Structured Remaining Life Assessment

Mechanical Dynamics & Analysis (MD&A) assessed both the current condition and remaining life of a 1968 Vintage fossil-fired 445MW D8 steam turbine following 700 starts and 345,000 operating hours. The owner wanted to know if the asset was safe to continue to operate and if it could be considered for repowering for another twenty years […]

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In-Place Stationary Shaft Machining Capabilities

Stationary Shaft Machining

MD&A continues to enhance our “one-stop shop” capabilities for customers, most recently through the addition of in-place stationary shaft machining. In-place stationary shaft machining allows MD&A to repair damaged journals, collector rings, and seal areas without removing turbine and generator rotors from the unit. The compact setup easily fits under LP hood radii to allow […]

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Global Multiyear Major Outages

unit 4 generator field installation

Mechanical Dynamics & Analysis (MD&A) recently performed multiyear outages for a customer on several different units in Colombia. First unit:  This was a major outage and generator test & inspection. In addition, this unit was retrofitted with a new rotor, bearings, and steam path components that required machining, including installing and fitting new nozzles. MD&A […]

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MD&A Safety: Human Performance Improvement

MD&A is officially integrating Human Performance Improvement (HPI) concepts into our safety program; so you might ask…what is HPI? HPI is an approach to safety improvement that integrates the lessons learned from scientific studies in human factor engineering and behavioral psychology into “system based” concepts to improve how decisions are made and to reduce the […]

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Throttle Valve Seat Upgrade

Throttle Valve Seat Upgrade

MD&A was contracted to modify both the left and the right-hand side throttle valves on a Westinghouse® steam turbine. The work was done at the power plant and was designed to reduce distortion on the valve casing, as well as the bonnet fit, and stud threads. As the on-site work was being performed, highly skilled […]

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DFLP Rotor Straightening and Machining

DFLP Rotor Straightening

Mechanical Dynamics & Analysis was contracted to straighten and machine a double flow low pressure (DFLP) rotor from a 3,600 rpm, 103 MW combined cycle power generating unit. The rotor forging arrived with both shaft ends bent. The Turbine end shaft end was bent and found to have a 0.007” total indicator runout (TIR) at […]

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Onsite Seal Services

MD&A’s highly skilled technicians perform custom installations of packing rings and tip seals on-site using a unique mobile containerized machine shop. Our installation process ensures optimal clearances, maintaining design efficiency and reducing likelihood of vibration due to seal rubs. View the video on the advantages of our custom fitting of packing and seals. For additional […]

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High Speed Balance Article

High-Speed Balance Rotor | gas turbine balancing and vibration analysis

Hear from our high-speed balancing expert, Keith Collins, in this article in Power Magazine’s November issue. High-speed turbine rotor balancing was once rare because of the costs and logistical challenges involved in doing it during an outage. That’s begun to change as economic options emerge, and experience is showing that high-speed balancing can pay big […]

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