Partner Content

Mechanical Dynamics & Analysis (MD&A) announces Portable In-Situ Air Flow Test stand capabilities that allow for immediate and conclusive data on gas turbine nozzle performance. This flow test apparatus provides efficient gas turbine air/gas flow analysis and is offered by MD&A Fuel Nozzle Services Division/ Integrated Combustion Solutions (ICS). The typical call to action is a control room combustion […]

Mechanical Dynamics & Analysis (MD&A) recently completed an overhaul at a combined cycle plant consisting of gas and steam turbine majors, a steam turbine generator minor inspection, and a gas turbine generator major inspection. The customer combined scope was the largest single project implemented at the site since the combined cycle plant was commissioned. MD&A sent all 3 rotors from […]

Mechanical Dynamics & Analysis’ Control Systems Division (MD&A Control Systems) replaced an industrial co-gen turbine’s original mechanical-hydraulic (MHC) controls with an electronic governor, electro-hydraulic trip system and self-contained control valve actuator. The primary drivers for the project were the operator’s desire to increase the long-term maintainability and reliability by replacing the MHC components that had […]

Learn how this material choice can help municipalities prepare for extreme weather and other challenging conditions. According to the Center for Climate and Energy Solutions (C2ES), tropical storms have become more common in North America since around 2000. Frequency and intensity vary from basin to basin. In the North Atlantic Basin, the long-term (1966-2009) average […]

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 […]

Steam plays a prominent role in the Power Industry. When a boiler goes down, companies can be faced with a potential loss of hundreds of thousands of dollars for each minute of lost production time. Although many plants operate 24/7 without interruption, it is very likely that a temporary steam plant will be required at […]

Mechanical Dynamics & Analysis (MD&A) repaired a Frame 5 gas turbine rotor.  MD&A replaced 1st and 2nd stage buckets, repaired the seal area on the row 1 turbine wheel, performed compressor blade blending, and machined the thrust collar to accommodate the newer style thrust bearing at the No. 1 bearing. During their planned major inspection, the […]

For many years, the OEM fix for major cracking or shell distortion was replacement of the defective shell, also referred to as casing by some OEMs, with new. Mechanical Dynamics and Analysis has provided an alternative to shell replacements which includes fixing the existing shell to extend its life. MD&A recently welded and repaired the HPIP […]

Flow-accelerated or flow-assisted corrosion (FAC) is the uncontrolled dissolution and transportation of iron oxides in a steam-water cycle system that occurs in both single-phase locations (water) and two-phase locations (water and steam). Single-phase FAC can be mitigated by chemical controls, but two-phase FAC remains largely unaddressed by industry’s available product options due to the challenging nature […]

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 the lathe which […]