Supply chain woes converge with lingering and emergent issues If you have an HA (7HA or 9HA) machine in your future–close to 70 worldwide are in the pre-COD (commercial operating date) phase–and you haven’t already, now’s the time to get engaged with the folks who have been operating 110 of those units globally. And the […]
SPECIAL REPORT: 2024 HA Users Group Read More »
Fairview Energy Center Owned by Competitive Power Ventures, Osaka Gas, and DLE Operated by NAES Corp 1050 MW, gas-fired 2 × 1 7HA.02-powered combined cycle equipped with a GE D602 steamer and John Cockerill (formerly CMI) HRSGs, located in Johnstown, Pa Plant manager: Irvin Holes Enclosure improves air-compressor reliability in winter Challenge. Fairview’s Atlas Copco
CPV Towantic Energy Center Owned by Competitive Power Ventures and Osaka Gas Operated by NAES Corp 805 MW, gas-fired 2 × 1 7HA.01-powered combined cycle equipped with DLN2.6+ AFS combustion systems, GE D602 steamer, and John Cockerill (formerly CMI) HRSGs, located in Oxford, Conn Plant manager: Larry Hawk GT enclosure cameras critical to plant’s participation
If you never had responsibility for operating and/or maintaining a GE E-, F-, or H-Frame gas turbine you might not have met Schuyler McElrath, who left us in mid-January at the age of 66. He was a fuel-system expert, always available to help users keep their engines starting and running reliably on oil. He was
In memoriam: Schuyler Vaughn McElrath, esteemed power industry professional Read More »
Decarbonization of the electric power industry will increase the use of hydrogen as a gas-turbine (GT) fuel—alone or in combination with natural gas. Issues for hot-section components when burning hydrogen include the following: increased flame speed, temperature, quenching distance, steam in combustion products (from 12% to 21%), and loading. The resulting increase in erosion and
TBC DURABILITY, PART I: Effect of hydrogen combustion on thermal barrier coatings Read More »
Metroscope, a relatively new entrant (2023 launch) to the US real-time powerplant process diagnostic software market, recently conducted a webinar to build more awareness of its technology and to differentiate it from other packages (some of which have been evolving since the early 1990s and can be considered “standard” in combined-cycle plants and in centralized
By Richard Laukam, ValvTechnologies LLC Steam stop valves, located at the boiler outlet, provide isolation. These typically are wedge-type gate valves, stop-check valves, or parallel-slide gate valves. Hardfacing often is applied to the seat and closing member (wedge, plug, or discs) to reduce wear and extend the duration of leak-free service. Hardfacing is the building
BOILER VALVES: Avoid Stellite delamination with alternative hardfacing Read More »
By Vignesh Bala, Vogt Power Editor’s note: This is the second of three articles exploring the impacts of gas-turbine upgrades on heat-recovery steam generators. It focuses on “re-rating” of the HRSG after the upgrade to extract maximum benefit from the work. Part 1, which examined the driving factors behind GT upgrades, appeared in August. Part
HRSG need not be a limiting factor in GT upgrade Read More »
Next meeting: Nov 12-14, 2024 • EPRI Campus • Charlotte, NC Inquiries: ACGTUG@epri.com • Details at www.epri.com/events Welcome the latest addition to the worldwide gas-turbine user community: The Advanced Class Gas Turbine Users Group. It was formed by EPRI to focus on issues common to the M501G, M501J, SGT6-6000G, SGT6-8000H, SGT6-9000HL, and other advanced frames
Tube leaks in heat-recovery steam generators certainly are not rare. CCJ has published many articles on the subject over the years—including one in the first issue (Q4/2003) that touted the benefits of full-penetration welds in HRSG tube panels to improve fatigue life. That said, why should you read yet another article on tube leaks, these
HRSG REPAIRS: A tale of two tube leaks Read More »
