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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MD&A Fuel Nozzle Services Division can extend the service life of a Fuel Nozzle End Cover Insert. 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 with F-Class DLN 2.0 […]
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At MD&A, We truly work together, as one team! We collaborate, we listen, we innovate. We put energy behind everything we do! Explore A Career with a Powerful Purpose! Apply Here Safe and reliable electric power doesn’t just happen. It’s created, generated, most often by one of these, joined to one of these. Each […]
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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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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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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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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 […]
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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 seal services installation process ensures optimal clearances, maintains design efficiency, and reduces the likelihood of vibration due to seal rubs. View the video on the advantages of our custom fitting of packing and […]
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