7EA Users Group – Combined Cycle Journal

7EA Users Group

June 16 Webinar: Proactive Turbine Oil Maintenance and Varnish Control

501 F&G Users Group, 7EA Users Group, 7F Users Group, Advanced GTs, Best Practices, CCUG, Frame 6, STUG / By

This joint educational webinar equips gas turbine operators and maintenance leaders with guidance and best practices for proactive turbine oil maintenance and varnish control, enabling high turbine availability, long‑term reliability, stable performance, and lower O&M cost. Eddie Rowland, CC Jensen’s clean‑oil expert, will outline modern oil‑management strategies, while Steve Malec, reliability expert at Duke Energy, […]

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

7EA Users Group, Frame 6 / By

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

501 F&G Users Group, 7EA Users Group, 7F Users Group, Advanced GTs, Aeros, Alstom Owners Group, Best Practices, CCUG, Frame 6, HRSGs / By

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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HV ELECTRICAL: Closing the inspection gap on switchyard high-voltage assets

7EA Users Group, 7F Users Group, Best Practices / By

Tip: Implement a structured visual inspection program for switchyard high-voltage equipment between scheduled maintenance intervals, supported by periodic thermal and acoustic diagnostics, to catch early indicators before they become forced outages. Bryan Miller of RATTLIR LLC recently called CCJ editorial offices to flag something he keeps seeing at gas turbine sites: a significant gap between

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CONTROLS: Cooldown procedure options for legacy frames

7EA Users Group, Controls, Frame 6 / By

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

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

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

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

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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