The Air-Cooled Condenser Users Group (ACCUG) annual meeting was held outside the US for the first time, in Queretaro, Mexico, Oct 21-24, 2019. Sessions began with a review of information on flow-accelerated corrosion (FAC) and cycle chemistry prepared by Barry Dooley, Structural Integrity, and presented by EPRI’s Andy Howell, chairman of the group. In-depth discussion […]
INTRODUCTION This two-part report summarizes information on cycle chemistry and thermal transients at combined-cycle/HRSG plants shared at the industry’s leading technical forums worldwide over the last several years—such as the US-based HRSG Forum with Bob Anderson. The foundation for many presentations and discussion sessions on these subjects comes from assessments undertaken in the last decade
SPECIAL REPORT: Trends in HRSG reliability, a 10-year review Read More »
The first meeting of the Australasian Boiler and HRSG Users Group (ABHUG), held last fall (2019) in Brisbane, Australia, followed 11 annual meetings of AHUG (Australasian HRSG Users Group). The added B is for boilers. Content now includes conventional fossil-plant technologies and issues closely related to those involving heat-recovery steam generators in combined-cycle and cogeneration
Some issues affecting HRSGs, conventional boilers have common solutions Read More »
A relatively common major repair encountered by generator owner/operators is replacement of the stator winding. There are two general methods for designing/constructing stator windings, Jamie Clark of AGT Services Inc told attendees at the 501F Users Group’s 2020 Conference and Vendor Fair, last February, at the Hilton, West Palm Beach, Fla. They are: Conventional: It
Unconventional stator design, construction complicate rewinds Read More »
The 7EA Users Group has joined Power Users, the umbrella organization for managing and coordinating the technical programs for many of the electric power industry’s leading user groups—including 7F, Combined Cycle, Steam Turbine, Generator, and Power Plant Controls. Sheila Vashi (sheila.vashi@sv-events.net) of SV Events will coordinate the 2020 conference and vendor fair at the J
7EA Users talk TILs, Blending, Controls, GCBs, Inlet, Exhaust, Busduct Read More »
Special to CCJ Onsite By Benjamin Emerson, Jared Kee, and Tim Lieuwen, Turbine Logic; Bobby Noble and Leonard Angello, Electric Power Research Institute; Dallas West, ENMAX Energy Editor’s note: This article introduces a novel combustion-dynamics monitoring (CDM) algorithm and a case study to demonstrate its successful detection of a gas-turbine combustor fault which otherwise might
Custom ear plugs protect hearing Hearing protection, explains Plant Manager Peter Kuijs, is one of the main health challenges at this AES Jordan site. Personnel (especially O&M teams) are exposed to high noise areas daily. The hearing-protection devices used were disposable ear plugs or ear muffs. Their main deficiencies: Discomfort, incorrect use, infection, and lifecycle
V Users Best Practices Award: Amman East Read More »
There were six V94.2 user presentations at the 2019 meeting, half based on experience in Europe, half in the Middle East. Speakers focused on the following: results of an extended HGP, follow-up on repairs to a compressor’s axial bearing after two years of operation, outage findings, damage to turbine blades attributed to domestic object damage,
V94.2 meeting highlights from Berlin (2019) Read More »
There were eight V94.3A user presentations at last year’s meeting, half based on experience in Europe, half in Asia. The European speakers focused on the following: gas-turbine O&M history covering nearly 10 years, generator major, expansion-joint failure analysis and repair/replacement, and combustion tuning to allow an increase in fuel temperature. Presenters from Dubai Electricity &
V94.3A meeting highlights from Istanbul (2019) Read More »
GTUsers.com, a web portal designed and maintained by Gasre Oy (www.gasre.com) to facilitate communication among owner/operators of gas turbines, transitioned from a “hobby” to a professional service in 2014. Coincidentally, the independent Finnish firm, launched in that year the development of its TMMonitor™ product for gas-turbine maintenance management and parts tracking. This software is represented
Who is GTUsers.com? Read More »
