Archive: Gas

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O&M staff keep their cool at Alaskan plant

Operating a combined-cycle power plant profitably is no walk in the park, even under ideal conditions. But the extreme conditions at the Beluga Power Plant—from isolation to volcanoes—challenge its staff every day in ways that operators in the lower 48 can only imagine.

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Gas turbine "refueling" via IGCC

The jury is still out on the economic and technical feasibility of burning gasified coal to generate electricity. Gasification technology has yet to be proven on a utility scale, especially with Powder River Basin coal as the feedstock. And on the generation side, there are more questions than answers about the capital cost and availability of integrated gasification combined-cycle (IGCC) plants. But with natural gas prices high and rising, it’s definitely worth examining whether it would be economically and technically feasible to convert the existing U.S. fleet of gas-fired combined-cycle plants to burn gasified coal.

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Fluid dynamics of the HRSG gas side

Designers of heat-recovery steam generators are using computational fluid dynamics software as one tool to reveal the invisible forces affecting the flow over, under, around, and through structures such as inlet ducts, distribution grids, and guide vanes.

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Gas storage investment stymied

  The U.S. needs to add 600 to 800 billion cubic feet (Bcf) of natural gas storage capacity ASAP. Independent storage providers (ISPs) are the entities best equipped to build this needed infrastructure, but they continue to be restrained by anachronistic regulatory policies. The Federal Energy Regulatory Commission’s (FERC’s) December 2005 rule-making to modify its […]

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1,200 MW in two years

Paris-based Alstom just handed the keys to the new, 1,200-MW Cartagena combined-cycle power plant (Figure 2) to Barcelona-based Gas Natural. The facility was finished in 24 months and 12 days following its ordering in December 2003, and nine weeks ahead of schedule. Peter Papert, project manager for Cartagena, said, "It was built more quickly than […]

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Frame 6C debuts in Turkey

GE Energy’s latest "first" is in Turkey, where the Frame 6C gas turbine-generator—a younger cousin of the popular Frame 6B—has made its commercial debut. The turnkey 130-MW combined-cycle plant, called the GE206C, comprises two 40-MW Frame 6Cs, one GE steam turbine-generator, two heat-recovery steam generators, and a distributed control system. The gas-fired plant (Figure 1), […]

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Rockin’ the casbah

Munich-based Siemens Power Generation (PG) recently finished building the 384-MW combined-cycle Tahaddart Power Plant in the city of the same name in Morocco (Figure 2). The turnkey project, which is about 20 miles south of Tangier, was completed in 25 months. The plant’s natural gas fuel comes through a new, 8-mile-long spur that connects to […]