CCJ ONsite: 7F Users Group 2012

Update #2


User presentations drive energetic discussion


The closed sessions at most user-group meetings serving owner/operators of frame-specific gas-turbine assets were structured similarly until recently. The standard formula was to start at the inlet air house and work back through the engine covering, in turn, the compressor, combustion section, turbine, generator, and control system. Session moderators would stimulate discussion using key words, recent experiences announced on bulletin boards, etc. more

User presentation, discussion topics


Is your S17 solution the right one?


Machining option might be best for removing R0 blades without damaging the wheel


Odds and ends on the compressor section


Fire that consumed an inlet filter house points to shortcomings of plant's safety plan


Update on experience with combustion dynamics monitoring systems


Generator bearing thermocouple installation guide


Understanding sensitive gas-turbine rotors

More from the "HRSG Spotlight" session


Fatigue cracking in superheaters and reheaters was the subject of CCJ ONsite's first report from the half-day "HRSG Spotlight" session at last week's 7F Users Group meeting in San Antonio. Two articles in this report cover presentations on mitigating fatigue cracking in panelized economizers, by Amy Sieben, PE, and in return-bend economizers and drum nozzles, by Scott Wambeke, PE.


Arrest fatigue cracking in economizers 


How to identify and correct HP steam-drum nozzle cracking 

Wednesday Vendor Presentation Recap


Three breakout sessions were conducted in each of two time slots Wednesday afternoon just ahead of the vendor fair. Six companies presented: DNV KEMA, Environment One Corp, Praxair Surface Technologies Inc, Pratt & Whitney Power Systems, Turbine Technology Services Inc, and TOPS. Expectation is that the presentations will be posted to the user group's new website at in the coming weeks so attendees can access information missed. Precises of presentations attended by the editors are below.


Characterizing advanced coatings for industrial gas turbines


Hydrogen control panels for generators with scavenging-type seal-oil systems


Open-architecture control systems: An alternative to the OEM upgrade solution


CCJ ONscreen Webinar: Managing Critical HV Electrical Plant Risk


The next installment of CCJ ONscreen (June 21) focuses on best practices to detect and manage critical electrical asset risk for improved plant performance and availability presented by Doble Engineering. details
Session topics include:

* Transformer Reliability Assessment & Failure Mitigation
* On-line Generator Condition Assessment - EMI Diagnostics
* Circuit Breaker & Switchyard Maintenance Best Practices
* Update on NERC PRC-005 Requirements

Vendor fair chatter: TICA offers complimentary membership, webinars for GT users


Three members of the Turbine Inlet Cooling Assn exhibiting last Wednesday evening-Parker Hannifin, TAS Energy Inc, Caldwell Energy-called to the attention of the editors TICA's offer of complimentary membership to gas-turbine owners and operators and the association's webinar series covering technologies for power augmentation. more











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