Frame 6 – Page 4 – Combined Cycle Journal

Frame 6

Frame 6 user presentations get high marks from attendees

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

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

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

Checklist of safety TILs and PSSBs affecting 6B gas turbines

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

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?

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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I&C Roundtable: Control-system upgrade generates much discussion

This session included a debate on the pros and cons of upgrading control systems versus retaining/maintaining legacy controls. Several users supported the idea of sticking with legacy systems because there’s a vibrant third-party supplier community available for support—including parts and knowledgeable technicians. An operator with Mark VI controls said his plant upgraded to Mark VIe

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