7EA Users Group – Combined Cycle Journal

7EA Users Group

GAS TURBINES: Open-market DLN-1 system anchors quick CC-to-GT peaker conversion

Ingenuity is never in short supply in the gas turbine (GT) industry, but some projects do amplify the wow factor more than others. Case in point: A Texas plant where a 1987-vintage, 2×1 7EA combined cycle (CC) cogeneration plant was converted into a peaking facility serving the lucrative ERCOT market. Collaboration among several non-OEM services […]

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CONTROLS: Cooldown procedure options for legacy frames

Legacy Turbine Forum, No. 7 in a series By Luke Williams, PE, Consultant www.geLegacyGasTurbineSupport.com IN THE BEGINNING Engineers who joined the GE gas turbine department in the early days often came from steam turbine design, where cooldown procedures were essential to prevent rotor thermal bow, a condition that can lead to vibration on startup. Several

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Easy as 1,2,3: Choose inlet filters based on GT-specific standards

ISO has published the first turbomachinery-specific standards for air intake filters. ISO 29461-1, ISO 29461-2 and ISO 29461-3 establish uniform test methods for efficiency and dust holding capacity, performance in fog and mist, and mechanical integrity at high pressure. While this is not breaking news, the combination of the three standards is a powerful decision-making

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INDUSTRY BRIEFS: What’s happening in the GT industry

People Trinity names Stivender to lead field services The Trinity Turbine Technology team recently announced that Errol Stivender has joined the company as VP of Trinity Turbine Services, overseeing all field service operations going forward. Stivender brings more than 35 years of experience in gas and steam generation as well as the refining and petrochemical

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March 3 Webinar: Combustion and Vibration Monitoring Best Practices

Mastering High-Temp Sensor Systems for Turbine Monitoring In this practical, engineer-focused session, PCB experts explain how to achieve clear, reliable data from high-temperature sensor systems in turbine environments. Drawing from both combustion and vibration monitoring applications, the webinar covers installation, calibration, and troubleshooting best practices that transform raw sensor output into actionable maintenance insights. Participants

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Plan for 2026: CCGT Industry Events  

Upcoming events where you’ll see CCJ attendance and coverage. Hope to see you there. FT8 Users Group  March 17-19  EPRI Main Campus and Marriott University Place, Charlotte, NC. Details/registration at www.ft8users.com. Contact: Ashley Potts, ft8@ft8users.com.   FT4 Users Group  March 17-19  EPRI Main Campus and Marriott University Place, Charlotte, NC. Details/registration at www.ft4users.com. Contact: Ashley Potts,

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CCJ Historical Society: Looking back from 2025

What your colleagues were telling CCJ subscribers five, 10, 15, and 20 years ago  Five years ago  The 7F Users Group and CCJ collaborated on the first virtual user-group meeting conducted as a result of the global pandemic. It was the launchpad for more than 20 online user meetings facilitated by CCJ during that challenging three-year period.  The Combined

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Quail Run: Cooperation on water use benefits both power generator, industrial neighbor

Quail Run Energy Center Owned by Starwood Energy Group Global Operated by NAES Corp 550 MW, two 2 × 1 7EA-powered combined cycles equipped with A10 steam turbines, located in Odessa, Tex Plant manager: Andy Duncan Background. Upon learning that a dig permit had been issued for property close to Quail Run, plant management arranged

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How the GT exhaust-thermocouple correction coefficient came to be 

LEGACY CONTROLS FORUM, NO. 5 IN A SERIES  By Luke Williams, PE, consultant www.geLegacyGasTurbineSupport.com Editor’s note. This article is based on material presented by the author in his training courses on gas- and steam-turbine controls to explain the reason for the algorithm described and how it works. Email clukewilliams@mindspring.com and ask to be notified of

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Damage report on a Mark I SCR static-exciter failure

LEGACY CONTROLS FORUM, NO. 6 IN A SERIES By Luke Williams, PE, consultant www.geLegacyGasTurbineSupport.com An MS7001B gas turbine with Mark I Speedtronic™ controls and SCR static exciter-regulator experienced overcurrent damage to its exciter on a normal startup. Operators think the overexcitation event lasted for several minutes. However, an overexcitation alarm was not received and the

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