MD&A was commissioned by a major U.S. utility to conduct a time-sensitive replacement for a non-native steam turbine bucket. The unit had previously received an OEM-supplied bucket upgrade, which created challenges for the customer. Since this was a modified unit, standard documentation was not sufficient. MD&A was able to leverage our deep experience within the […]
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Most large pulp and paper mills require vast amounts of reliable, base-load electric power. They also depend on steady high-temperature air and steam for their process operations. A large mill anticipated its current General Electric® Frame 5 gas turbine’s rotor would reach the end of its life cycle in 2024. A replacement would be needed. […]
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Tour our specialized, state-of-the-art MD&A Houston Service Center! Our Gas Turbine Parts Service Facility team has proven expertise on combustion and hot gas path components. View our Houston Service Center Tour Video below and then call MD&A today at (210) 618-8571 or use our Contact form. Welcome to MD&A’s Houston Service Center in Houston, Texas. MD&A is […]
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Mechanical Dynamics & Analysis has analyzed and resolved generator stator bar abrasion events that have become common on some newer GE® Frame 7F and 324, 330, or 390 generators. The damage can cause ground faults leading to forced outages and complete stator rewinds. A principal cause of the abrasion is traceable to side ripple spring-induced […]
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Mechanical Dynamics & Analysis (MD&A) has successfully utilized specially designed equipment for HP Rotor in-place machining to effectively repair a damaged steam turbine rotor, resulting in substantial savings in both cost and time. The high-pressure (HP) section of a 320 MW Alstom® STF30 steam turbine was severely damaged. Over time, the rotor’s shaft end at […]
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Hermiston Generating Plant For Hermiston Generating Plant in Oregon, Mechanical Dynamics & Analysis (MD&A) completed a complex, multiple-component combined-cycle major inspection and overhaul project that successfully brought both turbines and both generators back to full and reliable operations. The 474 MW combined-cycle plant was depending on the complete and efficient renewal of its Unit 2 […]
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Mechanical Dynamics & Analysis (MD&A) recently performed a steam turbine major inspection and repair service on a GE® G10 steam turbine in the Philippines. Initial inspection revealed numerous deficiencies that needed to be remedied. Outage consisted of High Pressure/Intermediate Pressure (HP/IP) turbine section major inspection, HP control valves #3 and #4 inspection, and the left-side […]
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What is an exhaust temperature spread, and why is it so important to monitor and take appropriate action when an exhaust temperature spread develops? An exhaust temperature spread refers to a high differential in readings between the thermocouples placed radially around the exhaust of a gas turbine. The worst exhaust temperature spreads occur when the […]
Read MoreMD&A recently performed a Stator Replacement, removing the old stator off the foundation and replacing it with a brand new Stator. The generator stator traveled by large vessel overseas, then by railcar to the site. In addition, the project included a full test and inspection on field, where MD&A experts rewound, applied a blocking modification, […]
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