Team-CCJ – Page 47 – Combined Cycle Journal

CCJ ONsite’s global coverage of users groups serving owner/operators of V engines concludes here with a focus on V84.2 (SGT6-2000E) and V84.3A (SGT6-4000F) machines

In round numbers, there are about five-dozen V84.2s operating in the US, three-dozen V84.3As. CCJ ONsite has covered the 60-Hz fleet since the mid-2000s. Siemens has hosted annual face-to-face user meetings over the last decade and invited the editors to participate. HEADS UP. The 2020 conference planned for September 14 to 17 at the Hilton […]

CCJ ONsite’s global coverage of users groups serving owner/operators of V engines concludes here with a focus on V84.2 (SGT6-2000E) and V84.3A (SGT6-4000F) machines Read More »

TURBINE TIP NO. 7: Benefits accrue from observing startup, operational, shutdown sequences

Best Practices / By Team-CCJ

Turbine Tip No. 7 from the PAL Turbine Services solutions library applies to General Electric Frame 5, Frame 6, and early Frame 7 gas turbines equipped with Mark V control systems. It is common for plant O&M personnel to focus their attention on the gas turbine during engine startup, operation, and loading. Fig 1 charts

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Eight plants earn Best of the Best honors in CCJ’s annual Best Practices program

Best Practices / By Team-CCJ

The COMBINED CYCLE Journal and the steering committees of the industry’s leading user groups—including 7F, 501F, 7EA, Western Turbine, Frame 6, 501G, 501D5-D5A, AOG, and Combined Cycle—collaborate to expand the sharing of best practices and lessons learned among owner/operators of large frame and aeroderivative gas turbines. Fifty plants participated in the 2020 Best Practices Awards

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Addressing stress corrosion cracking in the turbomachinery industry

7EA Users Group / By Team-CCJ

Addressing stress corrosion cracking in the turbomachinery industry Stress corrosion cracking is a common problem affecting turbomachinery components such as rotor discs, steam turbine blades and compressor impellers, and is a major factor driving component repair. This type of cracking may lead to catastrophic failures which result in unplanned down time and expensive repairs.

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Frame 6 user presentations get high marks from attendees

Frame 6 / By Team-CCJ

High wheel-space temperature issues were discussed by an owner/operator with three 42-MW 6Bs (Model 6581B) that had been commissioned in 2003. Two units completed their second major inspections in 2018, the third in 2019. High temperatures were noticed in the second and third turbine stages of one machine during startup following the major inspection. The

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PSM: Rotor repair and lifetime extension solutions

Frame 6 / By Team-CCJ

More power? Better heat rate? Faster ramp rate? FSNL in less than 10 mins? Lower load points? More Fuel Flexibility? Longer maintenance intervals? PSM will be presenting a live webinar at the 7FUG 2020 Digital Conference on June 30, entitled “What else do you need from your 7F power plants?” All GT owner/operators are able

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GE Day allows the OEM to address user concerns in a classroom setting or informal one-on-one

Frame 6 / By Team-CCJ

The first presentation after opening remarks reviewed how GE communicates with its customers and the value to plant personnel of the OEM’s Technical Information Letters (TILs), Product Service Safety Bulletins (PSSBs), Product Service Information Bulletins (PSIBs), and GEKs covering installation, product specifications, troubleshooting, maintenance, technical recommendations, etc. There’s much owner/operators can learn by becoming familiar

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Checklist of safety TILs and PSSBs affecting 6B gas turbines

Frame 6 / By Team-CCJ

Technical Information Letters TIL 2101, Modification of manual lever hoist for safe rotor removal. 2044, Dry flame sensor false flame indication while turbine is offline. 2028, Control settings for GE Reuter Stokes flame sensors. 2025, GE Reuter Stokes FTD325 dry flame sensors, false flame indication. 1986, Braid-lined flexible metal-hose failures. 1918, 6B Riverhawk load-coupling hardware

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Safety Roundtable: Reliable alarms critical to personnel safety

Frame 6 / By Team-CCJ

Safety is the first discussion topic at Frame 6 meetings and most other user-group conferences. This roundtable is led by Gillis, whose position as gas-turbine technology lead for ExxonMobil’s worldwide fleet of engines gives him a global perspective to share with attendees. OSHA is not global and America does not have all the answers. Gillis’

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Compressor Roundtable: Should you retain or remove inlet silencers?

Frame 6 / By Team-CCJ

The Compressor Roundtable included discussion of the following: HEPA hydrophobic filters. A user said his HEPA filters had been in service for two years and provided very dependable output over that time. Compressor remained clean. Some users touted the benefits of removing inlet silencers—including a lower delta p across the inlet system while mitigating compressor

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