Onsite – Page 65 – Combined Cycle Journal

Desert Basin reports experience, success with first 501F FlameTOP7 upgrade

The numbers are eye-opening: 20-MW gain in simple-cycle output, 3.8% heat-rate improvement in simple cycle, a stable GT turndown to 38%, and less than 9-ppm NOx across the load range. That’s what PSM and Salt River Project’s (SRP) Desert Basin Generating Station reported at the 2021 501F Users Conference after upgrading a 2001 vintage Siemens […]

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LM Engine Common Acronyms

Keep this list of acronyms nearby during WTUI’s 2021 virtual conference. You’ll find that most speakers talk in “shorthand,” using acronyms freely. If you’re not up to snuff on your aero lingo you can get lost in a hurry and possibly miss key points. The “cheat sheet” that follows can help you remain focused. AGB—Accessory

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What color is your hydrogen?

You can add another color to the burgeoning spectrum that is hydrogen as an energy stream: turquoise. According to Brad Bradshaw, speaking on the Hydrogen Energy Center’s (HEC) Apr 23, 2021 webinar (on-demand below), “Decarbonizing the Gas Grid with Hydrogen,” turquoise H2 is methane subjected to pyrolysis to split it into hydrogen and solid carbon.

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What GE told STUG2020 attendees about its steam turbines

Matt Foreman, platform leader, Combined-Cycle Steam-Turbine Services, opened the GE Day program at the 2020 virtual meeting of the Steam Turbine Users Group (STUG) with an overview of the topics to be discussed, including: fleet updates, valve and turbine-casing cracking, valve upgrade experience, D11 rotor bow, assessments to improve operability and reduce O&M spend, and

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EPRI reports offer a short course on delamination of hardfacing and how to avoid it

EPRI led a research effort from 2013 to 2015 to identify contributing factors to the large number of hardfacing failures—a/k/a delamination or disbonding events—experienced industry-wide. The project purposely engaged stakeholders in the valve supply chain with both users and valve manufacturers sponsoring the effort. Content summaries of the three technical update documents issued in 2015

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Stellite delamination is preventable, but owner/operators must ‘enforce’ the solution

Liberation of cobalt-based hardfacing (oft-used Stellite™ being one of these materials) from large Grade 91 valves installed in combined-cycle main and hot-reheat (HRH) steam systems, and in steam turbines, was a hot topic in the industry about a decade ago. With the need for an evidence-based solution, the Electric Power Research Institute (EPRI) assembled a

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NERC cybersecurity info sharing platform explained at Siemens forum

During the Siemens Executive Cybersecurity Forum for Electric Power, held virtually June 17, 2021, Manny Cancel, senior VP, North American Electric Reliability Corp (NERC), encouraged electric-power industry stakeholders to share information on cybersecurity threats, vulnerabilities, and experiences through NERC’s E-ISAC (Electricity Information Sharing and Analysis Center) platform. Cybersecurity alphabet soup is thick enough, and it’s

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Industry aims for more accurate assessment of creep damage in high-temperature boiler, turbine components

The High-temperature Defect Assessment conference has drawn international participation since its inception in April 1998. HIDA began as a European Commission and industry supported research project aimed at unifying defect-assessment procedures validated on materials of interest to high-temperature processes—primarily power generation. HIDA continues to meet periodically in response to industry developments and with a strategic

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Improve NH3 distribution to reduce NOx and ammonia slip

Bill Gretta, principal, SCR Solutions LLC, presented two case studies at a recent HRSG Forum virtual session, in which a unique field test method combined with sophisticated CFD analysis suggested modifications for improving distribution of ammonia through the SCR catalyst modules to improve NOx reduction and ammonia slip. Old units, and many new ones, are

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