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MD&A Insight

Collector Ring Refurbishment Project

Refurbished Collector Rings

Mechanical Dynamics & Analysis’ (MD&A) experts recently completed a collector ring refurbishment project utilizing our stationary shaft machining equipment at a customer’s plant.  All work was completed by MD&A’s Machining Services Division. MD&A’s in-place stationary shaft machining process allowed for repair of damaged collector rings on-site. As-found inspections revealed that collector rings had approximately .030” […]

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Compressor Stator Vane Pinning

Compressor Stator Vane Pinning | Completed view of the mid compressor case

Gas turbine axial-flow multi-stage compressor integrity and efficiency are critical to the thermodynamic performance of the entire power generation system. Mechanical Dynamics & Analysis (MD&A) recently completed a General Electric® 9FA.03 compressor stator vane pinning after a vane analysis revealed issues. Common issues to investigate are stator vane rocking tilt, fretting wear in the T-slot […]

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MD&A IBECS® – The Integrated Solution to Power Plant Control and Monitoring

Power plant control and monitoring can be complex given the need to integrate many different platforms. Adding to the complexity is the fact that HMI’s (Human-Machine Interface) supplied by the OEM often only interface with the OEMs controller and not with ancillary systems.  Lastly, ongoing support and updates from the common operating system may be […]

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Gas Turbine and Steam Turbine Services, Parts & Repairs

About MD&A With a rich 35 years of experience in the power generation industry, Mechanical Dynamics & Analysis is the most trusted company for turbine-generator needs. Our commitment to excellence has earned customer trust for all turbine-generator needs. We focus on delivering consistent quality and value with fast response, superior communications, and innovative solutions. MD&A […]

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Turbine Bucket Redesign & Modification

Turbine Bucket Redesign

Mechanical Dynamics & Analysis (MD&A) performed a turbine bucket redesign & modification on a variable-speed steam turbine. The unit is an essential prime mover for a compressor/chiller. The rotor was sent to MD&A’s Turbine-Generator Repair Facility in St. Louis, MO for standard blast cleaning, NDE and visual inspection. Inspection Stage 3 L-0 stage buckets and […]

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Fuel Nozzle End Cover Insert Life Extension

Fuel Nozzle End Cover Insert

ICS (Integrated Combustion Solutions) / MD&A Fuel Nozzle Services Division can extend the service life of a Fuel Nozzle End Cover. The life expectancy of an end cover increases from the OEM claim of 48,000 hrs. to over 125,000 hrs. with a new maximum of 7 insert replacements per cover. A braze-cracking issue can occur […]

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Steam Turbine Valve Actuator Diagnostics for Predictive Maintenance

Main Stop Valve

M&DA Control Systems recently analyzed Steam Turbine Valve Actuator Diagnostics to establish a plan for Predictive Maintenance.  Hysteresis Test data was gathered and utilized to establish an in-service predictive maintenance practice. This practice has allowed the customer to optimize their unit’s operational availability while reducing their maintenance costs. The predictive approach allows savings to be […]

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