POWER
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O&M
Using Steam Turbine Warming Blankets to Reduce Startup Time and Rotor Stress
Steam turbines have to be warmed slowly to avoid excessive differential expansion of the various components, rotor stress, and potentially reduced service life. For that reason, startup times must be extended
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Legal & Regulatory
Belo Monte Hydro Plant Stunned, Revived Again
Legal battles to stall the 11-GW Belo Monte hydroelectric dam—being built on the Xingu River in Amazon forest for one of the world’s largest power plants—are raging on in Brazil (Figure 1). In January
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Coal
Lower Coal Utilization in China Pegged in Part to Massive Coal Power Glut
Tremors in China’s economy rattled its power sector last year. For the first time since the Cultural Revolution in 1968, the country’s power generation dropped from the previous year—modestly, by 0.2%
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Legal & Regulatory
Coal Ash Hits the Big Time
Regulatory attention is rarely welcome in the best of times. When the attention is focused on a practice that has been standard operating procedure for more than a century—especially a practice that has left
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Gas
Siemens, GE, MHPSA Advance Gas Power Efficiency
Gas power technologies set new benchmarks over the past few months as gas turbine “gorillas” Siemens, General Electric (GE), and Mitsubishi Hitachi Power Systems Americas (MHPSA) all reported new
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Nuclear
South Korean Grid Connects World’s First APR1400 Nuclear Reactor
The world’s first 1,400-MW Advanced Pressurized Reactor (APR1400), a South Korean Generation III design, has now been connected to the grid. Nearly eight years since construction kicked off in October
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Gas
Desalination Expands, but Energy Challenges Remain
At the ballyhooed Paris climate conference last December, a little-noticed event occurred that could lead to important developments for electric generators. At the Paris meeting, some 80
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Legal & Regulatory
Germany’s Energiewende at a New Turning Point
Germany’s Energiewende (energy transition) was adopted as policy beginning in September 2010, some six months before the disaster at Japan’s Fukushima nuclear plant, and full legislative support was
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Legal & Regulatory
Zero-Discharge Pozzolanic Brine Solidification: Another Option for Treating FGD Wastewater
In late 2015, the U.S. Environmental Protection Agency (EPA) published new regulations governing wastewater discharge from steam electric power plants. These new regulations, or effluent limitation guidelines
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O&M
Monitoring and Treatment of Closed-Loop Cooling Water Systems
There may be multiple closed-loop cooling systems at your power plant. Chances are good that they cool or control temperature on some very critical components. The two that are most likely to exist are the
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Renewables
Xcel Energy: Committed to Renewables, but Going Its Own Way
Utility holding company Xcel Energy, headquartered in Minneapolis and with large electric and gas operations in eight states in the upper Midwest, the Rocky Mountain West, and Texas, has ambitions to be the
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Technology
Beyond the Firewall: Best Practices for Cybersecurity Risk Management
Generating companies wondering if concerns about cybersecurity are overblown got some rude wake-up calls this winter. The first call came when Ukrainian media reported that a December 23 blackout that left
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Coal
Will Tomorrow’s Power Plants Have Enough Water?
In a growing number of regions, power plants are competing with many other users for scarce freshwater supplies, and the situation is likely to get worse. The International Energy Agency (IEA) recently
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Gas
New Metering Solution Controls Condensate in HRSG Systems
Many combined cycle and cogeneration plants with heat recovery steam generators (HRSGs) were originally intended as baseload power sources or steam producers. In recent years, however, some have been
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Nuclear
Nuclear Newcomers Face Varying Hurdles
Nuclear ambitions fostered by some countries were tested by a variety of events at the end of 2015. Work Continues on Turkey’s Russian-Built Akkuyu Plant. Reports that Russia has halted construction of
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Renewables
CHP Update: Policies, Partnerships, and Challenges
Combined heat and power (CHP) is hot again—in more ways than one. After a surge in capacity during the 1980s, kick-started by the 1978 federal Public Utility Regulatory Policies Act (PURPA) that was designed
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Legal & Regulatory
Challenges of Increasing Dependence on Gas-Fired Generation
Use of natural gas for power generation in the U.S. is skyrocketing. From 2005 to 2015, the share of energy produced from gas has increased over 80%, with gas now comprising about 35% of the fuel mix. This
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O&M
Coal Ash Mapping Using Electromagnetic Technology
The identification and containment of coal ash has risen to the top of the priority list for plant managers across the U.S. after inadvertent releases of coal ash into unintended areas resulted in adverse
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O&M
LED Lighting Improves Visibility and Saves Money for Power Plant
Drax Power Station, a 3,960-MW six-unit facility located in North Yorkshire, England, is the largest power plant in the UK. It was constructed in two stages, with the first three units completed in 1974 and
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Legal & Regulatory
CHP and Other Technologies Could Breathe New Life into U.S. Coal-Fired Power Plants
Since the U.S. Environmental Protection Agency (EPA) released its “new source performance standard” on August 3, 2015, requiring new coal power plants in the U.S. to emit no more than 636 kg (1,400 lb) of
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Renewables
Bagasse and Blended Biomass Cogeneration Advances in the Cuban Sugarcane Industry
Advances in firing biomass, including bagasse, in Cuban sugarcane operations.
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Legal & Regulatory
Navigating Legal Implications of Power Industry Regulations
A summary of POWER’s legal affairs conference on power industry regulations.
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Plant Design
Innovative Heat Exchanger Technology Enhances Proven Designs
Shell-and-tube heat exchangers have been around longer than anyone reading this article. The heat exchanger offers many advantages. It can be used in condensing, boiling, or single-phase applications; it can
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Legal & Regulatory
TransAlta Plays Defense with Coal Out, Renewables In
When it comes to a transition away from coal, TransAlta Corp. is playing political defense. The Canadian province of Alberta contains among the richest fossil energy resources in the world, including oil (and
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Commentary
And Now, a Word from (and to) Our Sponsors
You’ve heard that Nothing in life is free , yet this magazine is free for the vast majority of readers—both in print and online. That’s only because of the continued support of our advertisers. No media
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O&M
Using Sensor Technologies to Optimize Maintenance of Power Plant Water Systems
When we undertook an initiative at Granite Ridge Energy (GRE) to identify, prioritize, and assess components that were due for their 10-year assessments, we didn’t know quite what we were taking on or how to
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Renewables
POWER Digest (February 2016)
RWE Abandons Hard Coal Construction Project. RWE scrapped plans to complete the 800-MW Block D of the Hamm hard coal plant in the German state of North Rhine-Westphalia on December 18, citing damage and delays
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Renewables
Power Technology Innovations from the Developing World
In its recently released Energy Technology Perspectives 2015, the International Energy Agency (IEA) noted that innovation in the energy sector differs from progress in other sectors in that it tends to move
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Renewables
Wind Funnel Generator Is Channeling Interest
A unique wind funnel–based power generating system that is quickly garnering interest from investors could see first construction kickoff in the first quarter of 2016. The INVELOX (short for “increased