ON THE COVER Challenges in sourcing water for power plant cooling and makeup continue to grow, forcing plant owners and managers to become ever more creative with solutions. Photo of France's Chooz Nuclear Power Plant. Courtesy: Mossot/Wikipedia Creative Commons Established 1882 * Vol. 161 * No. 3 SPEAKING OF POWER The Changing of the Guard GLOBAL MONITOR Europe Tackles Cybersecurity Low LNG Prices Fuel Interest in LNG-to-Power Projects UAE to Rely on Renewables Over Long Term THE BIG PICTURE: Shunning Coal New Construction Milestones for AP1000 Units POWER Digest FOCUS ON O&M Eddy Current Tube Inspections Efficiently Find Defects Protecting Critical Infrastructure LEGAL & REGULATORY Trump's Two-for-One Special on Federal Regulations By Thomas W. Overton, JD COVER FOCUS: WATER & WASTEWATER Lowering Cost and Waste in Flue Gas Desulfurization Wastewater Treatment New technologies are changing the options available for flue gas desulfurization wastewater treatment. One innovative solution that has reduced costs and the amount of waste generated combines electrodialysis and reverse osmosis in a novel system. Cooling Towers: Efficiency Waiting to Happen Sustaining excellent cooling water system performance is important because a one-degree increase in water temperature can cause a 2% increase in energy usage. Proper maintenance and a few upgrades could improve a cooling tower's efficiency, while also saving water in the process. Using Reclaimed Water in Power Plant Cooling Applications Using treated municipal wastewater-also known as reclaimed water-as a makeup supply for cooling tower systems can be a great option, but there are challenges due to varying concentrations of problematic contaminants. A unique stress-tolerant terpolymer could provide a solution. Reclaimed Water Reduces Stress on Freshwater Supplies When evaluating whether or not to utilize reclaimed water at a plant, there are several questions that must be asked. The answers drove one facility to implement a two-stage process that uses a proprietary microsand to flocculate incoming solids for phosphorus removal, and rotating screens for additional filtration. A Comparison of ELG Compliance Options for Flue Scrubber Wastewater 42 Both biological treatment and zero liquid discharge approaches have been used to meet the requirements of Effluent Limitations Guidelines. However, the decision on which to use requires careful consideration. Future flexibility could be more important than initial cost. 38 34 28 13 22 March 2017 6 8 9 9 10 12 Big Winds for Big Offshore Wind Turbines From Siemens, MHI Vestas 13 HECO Tests Virtual Power Plant in Hawaii 13 14 16 18 12 20 22 March 2017 | POWER www.powermag.com 1http://www.powermag.com