Archive: Gas

Explosion Devastates Major Cypriot Power Plant

A brush fire that spread and detonated explosives stored at the Evangelos Florakis naval base in Mari on the southern coast of Cyprus on July 11 killed 13 people, injured 62 others, and severely damaged the Vassilikos Power Station—an oil- and gas-fired plant that supplied almost 60% of the island nation’s power. Cyprus, which was once considered an “economic miracle,” has been battling crippling power shortages that have beleaguered its financial and tourism sectors since the blast and left it on the verge of economic collapse.

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THE BIG PICTURE: Lights Out

Heat waves, droughts, and other weather and climate phenomena; economic woes; aging or inadequate infrastructure; fuel shortages. These are some of the most obvious causes that have led to record peaks in power demand or sudden drops in available capacity. The results have been sometimes debilitating load-shedding, brownouts, and blackouts around the globe this summer (and, in some cases, for much longer). Here’s an overview of which countries are affected by which difficulties. For a more detailed look at the extent of shortages and what’s causing them, visit Web Exclusives at http://www.powermag.com

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Who Pays for Firming Up Variable Energy Resources?

The major economic hurdle for renewable power generation technologies continues to be substantial installation costs. But another cost is associated with continuous load-balancing, made possible by backstopping that variable generation with dispatchable generators that typically consume expensive fossil fuels. Bottom line: Who pays for the capacity firming or backstopping resources?

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Best Practices for Natural Gas Line Cleaning

As barriers to new coal-fired generation expand and enthusiasm for nuclear plants wanes, the commissioning of natural gas–fired plants promises to increase. However, gas plants pose hazards, too. An explosion last year that was caused by unsafe use of natural gas to blow residue from a gas pipeline during commissioning of a gas-fired power plant has focused regulator and industry attention on finding safer alternatives for this task. Fluor shares its gas pipeline cleaning best practices.

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Global Gas Glut

Marcellus Shale gas has increased recoverable natural gas reserves in the U.S. by about a third over estimates prepared a few years ago. Europe is also exploring shale gas as an alternative to problematic Russian gas supplies and low proven natural gas reserves. POWER contributors in the U.S. and UK examine the comparative economic value, public acceptance, and political implications of these massive shale gas reserves.

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Top Plant: Irsching 4 Combined Cycle Power Plant, Irsching, Bavaria, Germany

The Irsching 4 Combined Cycle Power Plant has set a new world record in power plant efficiency with its new SGT5-8000H gas turbine. With an output of more than 578 MW and efficiency of 60.75% (net) achieved at a world record test run in May 2011, the plant demonstrates that climate protection, low-cost power generation, and flexible operation using fossil fuels can be attained simultaneously through technical advances. Due to its high efficiency, the gas-fired plant uses significantly less fuel and produces lower carbon dioxide emissions than traditional combined cycle plants.

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Top Plant: Emirates Aluminum Smelter Complex (EMAL), Al-Taweelah, Abu Dhabi, United Arab Emirates

The new 2,100-MW Phase 1 EMAL combined cycle power plant provides dedicated power with a high level of reliability to the Emirates Aluminum Smelter Complex, which is designed to be the world’s largest aluminum smelter upon completion. Located on the Persian Gulf, the gas-fired combined cycle plant uses seawater cooling towers to eliminate thermal stress on local marine life.

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Marmaduke Award: CFE Extends CTG Universidad Unit 2’s Life with Conversion to Synchronous Condenser

CTG Universidad is a two-unit combustion turbine plant commissioned in late 1970 by the Comisión Federal de Electricidad (CFE) on the north side of Monterrey, Mexico’s third-largest city and an important industrial center. By the 1990s, the two 14-MW turbines were obsolete, used sparingly, and slated for demolition in 2010. However, by 2002, portions of Monterrey began experiencing power restrictions caused by a lack of sufficient reactive power production, and that situation presented an opportunity for the plant. By repurposing an old combustion turbine for use as a synchronous condenser to provide local reactive power, CFE significantly reduced local power supply limitations. For that savvy plant repurposing, CFE’s CTG Universidad Unit 2 is the winner of POWER’s 2011 Marmaduke Award for excellence in power plant problem-solving. The award is named for Marmaduke Surfaceblow, the fictional marine engineer and plant troubleshooter par excellence.