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 »
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 »
By Guillaume GROGNET, Maintenance Mechanical Manager, Electricité de France Bouchain CCGT, operated by Electricité de France (EDF), in Northern France was commissioned in July 2016 and has accumulated over 45k operating hours and 650 GT factored starts as of Q4/2023. Due to European grid code and recent grid operation modifications, French and European CCGTs operate
Case studies on HP economizer tube leaks at Bouchain CCGT Read More »
“Mastering Desuperheating and Attemperation,” Ory Selzer, IMI Insyt Almost 200 slides long, this presentation could serve as a comprehensive training course on what can and does go wrong with two of the most vexing subsystems in the steam cycle, as well as solutions. Instructor sets the stage with numerous photos of component failures (Fig 6),
Combined Cycle Users Group: 2023 vendor presentation recaps Read More »
Quality of work, changing missions challenge aging plants Related Links What you shouldn’t miss at the upcoming Power Users Annual Conference featuring five user group tracks Power Users Annual Conference dives deep into emerging industry trends, concerns Combined Cycle Users Group: 2023 vendor presentation recaps Steam Turbine Users Group: 2023 vendor presentation recaps Generator Users
Power Users Annual Conference dives deep into emerging industry trends, concerns Read More »
By Vignesh Bala, Vogt Power Editor’s note: This is the first of three articles exploring the impacts of gas-turbine upgrades on heat-recovery steam generators (HRSGs). It examines the driving factors behind GT upgrades. Part 2 will focus on the concept of “re-rating” the HRSG after its upgrade. Part 3 will address implementing the HRSG mods
Gas-turbine upgrades and their impacts on HRSGs Read More »
By Steven C Stultz, Consulting Editor The Australasian Boiler and HRSG Users Group will conduct its 2024 meeting in Brisbane, December 3 – 5. Details will be available at www.ccj-online.com as they become available. Submit your abstracts to present to Barry Dooley and Bob Anderson for consideration. Steering committee ABHUG is chaired by Barry Dooley,
AUSTRALASIAN BOILER AND HRSG USERS GROUP: 2023 Conference Report Read More »
Editor’s note: Jeff Henry, Applied Thermal Coatings (ATC), and Jayaram Vattappilly, Hartford Steam Boiler (HSB), conducted a webinar Jan 24, 2024 on “Premature failures of formed tees [tee intersections] in high energy piping systems,” a topic introduced at the 2023 HRSG Forum. Webinar highlights Recently, there have been several premature pressure-part failures in both conventional
HIGH-ENERGY PIPING SYSTEMS: Premature failures of formed tees Read More »
