Turbine Tip No. 12 by Dave Lucier, owner/GM, PAL Turbine Services, applies to General Electric package power plant (PPP) models MS5001D, L, and LA. GE installed compressor bleed valves (a/k/a recirculation valves) on these legacy gas turbines. Axial-flow compressors for the earliest units—those with 15 or 16 stages—had valves to recirculate air from the […]
Are your compressor bleed valves open or closed? Read More »
Jeff Bause, Noxco’s CEO, opened the webinar by explaining to turbine users how his company is raising an industry bar with the first LTSA (long-term service agreement) for emissions compliance. He said that by removing the burden and responsibility for protecting and managing complex systems from owner/operators, Noxco delivers performance, predictability, cash flow, and 100%
Guaranteed emissions compliance for ageing gas turbines Read More »
Metal temperature is, perhaps, the variable most affecting the service lives of superheaters and reheaters. Long-term overheating of these components can result in failures necessitating multi-million-dollar repairs, based on the experience of Bryan Craig, PE, and his colleagues at HRST Inc. There is an upward trend for overheating failures in the industry, and many HRSGs
How HRSG duct burners can affect downstream tube metal temperatures Read More »
To address trim erosion on HP-bypass pressure control valves (PCV), HRSG Forum’s Bob Anderson (see previous article) put together a panel of experts—including Ory Selzer, IMI/CCI; Justin Goodwin, Fisher Valve; Vasileios Kalos, GE Gas Power; and Consultant Joe Schroeder. The erosion occurs when high-pressure steam entrains water droplets (not to be confused with saturated steam)
HRSG Forum panel digs into the details of trim erosion on HP-bypass PCVs Read More »
This year’s annual HRSG Forum with Bob Anderson is taking place online in monthly installments. If the first, held May 3, 2021, is any indication, you won’t want to miss any of the upcoming sessions. Follow CCJ ONsite for announcements of session content, dates, and times, and registration link. Invited participants are powerplant owner/operators and
Powerplant Safety: Hex chrome deep dive with chemistry focus Read More »
Two relatively short white papers available from Mitsubishi Power can bring you up to speed on the state-of-the-art and future of remote operation and support and on digital strategies for improving steam-plant performance. Some of the insights shared on the latter topic also are of value to combined-cycle owner/operators. “Remote Operation and Support—the New Normal?”
Camfil Power Systems and Penn State joined the Gas Turbine Assn in March (2021) as Affiliate and Associate members, respectively, reports Managing Director Sal DellaVilla. They complement Mitsubishi Power, GE Power, Siemens Energy, Pratt & Whitney, Turbine Logic, Strategic Power Systems, PSM, Solar Turbines, and PW Power Systems in advancing the organization’s efforts to ensure
Camfil, Penn State join Gas Turbine Association Read More »
Riken Keiki Co’s OHC-800 (photo), a relatively new type of calorimeter, uses optical and sonic sensors to provide real-time monitoring with high accuracy. The instrument’s use in optimizing turbine and boiler air/fuel ratios make it of interest to O&M personnel at gas-turbine-based simple- and combined-cycle plants. Recall that competitor gas chromatographs provide highly accurate analyses
New type of gas calorimeter said to benefit turbine users Read More »
The 501F Users Group returns to in-person conferencing in 2022 with a year of experience in the virtual meeting world under its belt. The organization’s 22nd annual conference convenes in New Orleans at the Hyatt Regency on Sunday, February 20, and runs through noon on the 24th (Thursday). Sunday is reserved for socializing. There’s a
501F Users Group 2022 F2F meeting preview; 2021 virtual conference recap Read More »
New purge procedure allows faster start of gas-line maintenance Challenge. CPV Valley Energy Center’s procedure for depressurization and purge of its fuel-gas system for inspection and maintenance required multiple movements of equipment (nitrogen trailers and hook-ups). Plant’s goal was having a procedure that didn’t require the movement of equipment and one conducive to faster purging.
501F Best Practices: Valley (Best of the Best) Read More »
