7EA Users Group – Combined Cycle Journal

Legacy users compare notes on cycling duty, exhaust distress, and repair strategy

Users compare notes The 2025 Legacy Turbine Users Group, consisting of tracks for the GEV 7E, 6B, and 5 fleets, in Minneapolis again demonstrated why user-group meetings still matter for mature fleets. LTUG is not where owner/operators go to hear that legacy machines are old. Everyone in the room already knows that. They go to […]

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Maximizing the lifespan of CO catalyst: What operators should check before ordering replacement

For many gas-turbine users, CO-catalyst trouble shows up first as a compliance headache: stack CO starts climbing at low load, differential pressure changes, and the plant is forced to decide whether it is looking at a cleaning issue, a system issue, or end-of-life catalyst. That decision now carries more economic weight than it did a

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CONTROLS: Cooldown procedure options for legacy frames

7EA Users Group, Controls, Frame 6 / By Team-CCJ

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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Taking the noise out of turbine monitoring

501 F&G Users Group, 7EA Users Group, 7F Users Group, Advanced GTs, Aeros, D5-D5A Users, Frame 6 / By Team-CCJ

High-temperature pressure sensors and accelerometers rarely get much attention when they are doing their jobs. But when a combustion dynamics channel goes noisy, a cable loosens, or a monitoring system starts throwing spikes, the consequences can move quickly from nuisance to risk. That was the practical takeaway from Dave Martin, business development manager at PCB

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Extending the life of legacy gas turbine fleets

7EA Users Group, Alstom Owners Group, Frame 6 / By Team-CCJ

Globally coordinated, locally delivered reconditioning supports aging legacy units With mature gas turbine fleets, operators are under increasing pressure to maintain performance, reliability, and availability beyond original design life. Reconditioning has become a critical tool for extending asset life, restoring efficiency, and reducing lifecycle costs while managing outage risk. GE Vernova supports legacy fleets (GT8,

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

7EA Users Group, Frame 6 / By Team-CCJ

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

501 F&G Users Group, 7EA Users Group, 7F Users Group, Advanced GTs, Aeros, Alstom Owners Group, CCUG, D5-D5A Users, Frame 6, STUG, V Users / By Team-CCJ

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

501 F&G Users Group, 7EA Users Group, 7F Users Group, Advanced GTs, Aeros, Alstom Owners Group, Best Practices, CCUG, Controls, D5-D5A Users, Frame 6, Generator Users Group, Generators, HRSGs, STUG, V Users / By Team-CCJ

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

501 F&G Users Group, 7EA Users Group, 7F Users Group, Advanced GTs, Aeros / By Team-CCJ

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 

501 F&G Users Group, 7EA Users Group, 7F Users Group, Advanced GTs, Aeros, Alstom Owners Group, CCUG, Controls, Frame 6, Generator Users Group, HRSGs, STUG / By Team-CCJ

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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