7EA Users Group – Combined Cycle Journal

7EA Users Group

Regenerating a refinery cogen’s Frame 7EA rotors

Phoenix Rotor™ gives facility the best of both worlds KEY POINTS Units returned to 200,000 factored fired hours Lengthy outages avoided CapEx savings of around 40% compared with a new rotor from the OEM THE CHALLENGE: Going beyond rotor end of life  Gas turbine rotors have a finite lifetime. Heavy-duty gas turbine rotors in particular, […]

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The basics of testing legacy generators

AGT Services Inc’s Jamie Clark frequently is asked to present at user group meetings given his deep knowledge of generators. At last year’s (2022) Frame 5 Users Group conference, Clark conducted a well-received workshop on generator testing, inspection, and condition assessment which is of value to most participants in the Legacy Turbine Users Group—owner/operators of

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Webinar Series: Machine learning improves CCGT availability, capacity, and efficiency

Case studies on generation M&D, predictive analytics, capacity/fuel demand forecasting, and performance testing This webinar series, presented by Primex Process Specialists, is directed specifically towards power plant owners and operators to introduce machine-learning basics and how this rapidly evolving technology can improve power plant availability, capacity, and efficiency. Each webinar will include a 30-minute live presentation followed

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Nineteen 2023 meetings focusing on user information needs that you should consider attending

February 19–23, 501F Users Group Annual Meeting, Reno, Nev, Peppermill Resort & Spa. Details/registration at www.501fusers.org as they become available. Chairman: Ivan Kush, Cogentrix Energy Power Management. Contact: Jacki Bennis, jacki@somp.co. February 19-23, 501G Users Group Annual Meeting, Reno, Nev, Peppermill Resort & Spa. Meeting is co-located with the 501F Users Group conference. Details/registration at

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Power Users welcomes 7EA Users Group to world’s largest network of owner/operators

    The Legacy Turbine Users Group, formed by Power Users earlier this year to facilitate the transfer of knowledge among members of the 7EA and Frame 5 and 6B users groups, greatly benefits owner/operators of these engines. The 7EA’s first meeting under the LTUG banner, conducted Aug 29 – Sept 1, 2022, was an

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Turbine inlet cooling: First step on the pathway to net zero emissions

Gas turbine systems produce over one-third of US electric energy requirements. They provide reliable baseload power, in addition to that required to support the intermittent production of electricity from renewable sources. According to a recent Washington Post article, “Turns Out Wind and Solar have a Secret Friend: Natural Gas,” every 0.88% of capacity from renewables

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Repair options multiply as main-steam-valve issues increase

It only takes 2-3% steam overflow to trigger a steam turbine/generator (ST/G) overspeed event, cautioned Dean Casey, project manager for machining services at MD&A, to stress the importance of main-steam-valve inspections and timely repairs. During his presentation in MD&A’s fall series of webinars, “Steam Turbine Valve Outage Common Issues,” Casey went on to say that

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