Category Archives: CCUG

F-Class CCGT Power Plant For Sale

COMBINED CYCLE POWER PLANT FOR SALE 395-MW, 1×1 CCGT plant with GE 9FA gas turbine, GE D-10A steam turbine, Alstom HRSG

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Diffuser-duct upgrade mitigates 7FA exhaust-system reliability concerns

Consulting Editor Steve Stultz’s reports on the last HRSG Forum with Bob Anderson and Australasian HRSG Users Group annual meeting discussed ageing issues associated with steam systems installed in the late 1990s and early 2000s. As these systems in combined-cycle and cogeneration plants reach half-way in their design life, overheating of all components has become […]

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Acoustic leak detection benefits boiler owners, but not all systems are HRSG-qualified

Independent users groups serving owner/operators at cogeneration and simple- and combined-cycle plants powered by gas turbines are an invaluable resource for station personnel. Almost all have online forums available 24/7/365 to help answer technical questions quickly and get you moving in the right direction with possible solutions. Most colleagues offering their unbiased assistance have deep […]

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Coating critical steam-valve parts with chrome carbide avoids stellite delamination issue

Stellite liberation from large valves installed in main and hot reheat (HRH) steam systems serving F-class combined cycles, considered a major industry problem 10 years ago, has been eliminated by substituting chrome carbide as the hard-facing material for critical valve parts. The editors first learned of stellite delamination at the 2009 7F Users Group Conference […]

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HRSG inspection tips

It’s important to have a comprehensive checklist of what to inspect on your HRSG, and how, before conducting a condition assessment of your equipment for plant management and/or due diligence purposes. Your checklist may have scores of items to review but it’s impossible to identify everything to look at—usually because your depth of knowledge and […]

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Pitfalls to avoid when adding a fuel-gas compression system to an operating plant

With the power-generation sector shifting its fuel mix to an increased dependence on natural gas, the decreased downstream volume and unreliable gas pressure can wreak havoc on legacy power production facilities. It can be challenging for an ageing plant to remain a relevant, competitive, and reliable resource. “If your gas supply system operates at a […]

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