MD&A

Steam turbine work on the international stage can have its challenges, but also its successes. Mechanical Dynamics & Analysis (MD&A) was contracted to inspect, analyze, and then straighten a Toshiba® steam turbine rotor in Abu Dhabi, United Arab Emirates. MD&A launched its team into action for a full analysis of the issues followed by a resolution of […]

MD&A’s Steam Path Audit webinar describes the technical process of conducting a visual inspection of a steam turbine’s steam path for the purpose of identifying and quantifying deficiencies in thermal efficiency.  The results of the inspection are used to determine the root cause of efficiency degradation and to guide maintenance during an outage such that […]

In this webinar we will cover the typical limiting factors of gas turbine components and how they can be repaired. We will cover the steps used in implementing a life time extension and will show some case studies. Some examples of how new parts are redesigned with features that make them more robust will also be covered.

This webinar will be beneficial to the engineers and power plant personnel involved with the refurbishment and replacement of the gas turbine hot gas path components.

Elevated temperatures take a big toll on gas turbine components risking cracks, corrosion, wall thickness, and material condition. Repair enhancements can extend a part’s life by slowing its degradation and pushing out its usable service life. Operators can see significant savings by opting for lower-cost repaired spares instead of new parts as demonstrated in the following case studies.

The countdown was set for T-19 days to complete a 7FA gas turbine hot gas path inspection together with a 7FH2 generator inspection and repairs providing all services, labor, and parts. While the average time for such project can be much higher, the Mechanical Dynamics & Analysis (MD&A) team of experts was able to perform a carefully

Competitive maintenance uses an analytical process and condition-monitoring tools to select the optimum maintenance strategy for each plant system. For example, the optimum strategy for the plant’s steam turbine will be different than that for its gas turbine, and vastly different than that of its feedwater pumps. How well do you know your maintenance strategies? […]

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 […]

Mechanical Dynamics and Analysis (MD&A) was contracted after a forced outage to perform a major overhaul on a cogeneration unit’s MS5001PA gas turbine, and to remove, test and inspect the generator field. Because the unit dispatches as baseload and the turbine is a critical asset, MD&A was asked to complete the repair work as quickly […]

Mechanical Dynamics and Analysis (MD&A) was retained by a utility to perform a stub-shaft repair of a generator rotor collector-end shaft. The customer reported that the generator rotor had suffered a collector ring failure and also a ground to the main shaft. Major arcing and heat damage occurred to the generator rotor forging shaft. The utility weighed […]

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, and were […]