Aaron Larson
Articles By

Aaron Larson

  • Control Room Operational at First AP1000 Nuclear Plant

    When Sanmen Nuclear Power Co. and State Nuclear Power Technology Corp. declared the main control room at the Sanmen Unit 1 nuclear power plant—currently under construction in China—operational on March 31, it marked the first AP1000 unit to reach that important milestone. Several instrumentation and control (I&C) systems were integrated and tested before the declaration […]

  • Senate Leaders Call for Investigation into FERC Leaks

    In a letter to Department of Energy Inspector General Gregory Friedman, U.S. Senate Committee on Energy and Natural Resources Chair Mary Landrieu (D-La.) and Ranking Member Lisa Murkowski (R-Alaska) requested an investigation into sensitive information leaks suspected to have originated in Federal Energy Regulatory Commission (FERC) offices. The letter—dated March 27—stated that “Recent reports in […]

  • Happy Anniversary, Three Mile Island!

    On the 35th anniversary of the most serious accident in U.S. commercial nuclear power plant operating history, it seems fitting to take a look back at the Three Mile Island Unit 2 (TMI-2) meltdown. One of POWER’s contributing editors—Kennedy Maize—wrote an article on the 30th anniversary that recollected his experience covering the event. It’s still […]

  • Proposal to Clarify Clean Water Act Puts McCarthy on Hot Seat

    When Environmental Protection Agency (EPA) Administrator Gina McCarthy testified at the House Appropriations subcommittee on Interior, Environment, and Related Agencies today, Rep. Hal Rogers (R-Ky.) made it clear from the start that he would be at odds with her. “For years, it seems the EPA has worked hard to devise new regulations that are designed […]

  • Finding the Sweet Spot for Natural Gas Exports

    With natural gas exports as its focus, the Senate Committee on Energy and Natural Resources held its first oversight hearing with new chair, Sen. Mary Landrieu (D-La.), at the helm on Mar. 25. Landrieu began the hearing by pointing out how greatly America’s natural gas situation has changed in less than a decade. She noted […]

  • Dan River Ash Spill Could Lead Duke to Retire 932 MW of Coal Generation

    The Dan River coal ash spill has forced some serious discussions about the future of Duke Energy’s North Carolina coal fleet. Duke Energy President and CEO Lynn Good said in a March 12 letter to Gov. Pat McCrory (R) and Department of Environment and Natural Resources (DENR) Secretary John Skvarla that the company is planning […]

  • NuScale Gains Partner for Small Modular Nuclear Reactor

    NuScale Power LLC and Enercon Services Inc. have joined forces, announcing a strategic partnership to support deployment of NuScale’s small modular reactor (SMR) technology. Enercon got its start in 1983, supporting nuclear plant startups and operations. In 2005, the company created its New Plant Services division to focus on deployment of new nuclear plants. The […]

  • California Solar Output Sets New Record

    When California’s solar power production peaked at 4,093 MW on Mar. 8, it set a new record, supplying nearly 18% of the state’s electricity demand at the time. California is the largest producer of solar power in the nation with 5,231 MW of installed capacity. According to the Solar Energy Industries Association, 2,621 MW of […]

  • Are You Playing with Fire? A Guide to Fire Retardant Conveyor Belts

    If a conveyor belt does not perform according to the manufacturer’s claims—by wearing prematurely, ripping too easily, or disintegrating due to excessive heat or because of oil penetration—the risk to life and limb is relatively small. Yes, it can be very expensive, but it is generally not life-threatening. But if a fire retardant conveyor belt […]

  • Exorcising the Mercury Demons at Coal Creek Station

    The deadline for power plants to comply with the Environmental Protection Agency’s Mercury and Air Toxics Standards (MATS) is fast approaching. The wide range of rapidly changing and developing technologies that can be used to reduce emissions offers many options for decision makers to meet mercury control limits. At one plant, Great River Energy’s (GRE’s) […]

  • `COAL POWER Direct—Mar. 12, 2014

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  • NRC Issues Report Cards for All U.S. Nuclear Plants—See Who’s Failing

    The Nuclear Regulatory Commission (NRC) issued its annual assessment of the nation’s 100 operating commercial nuclear power plants on Mar. 6. The results—for performance through 2013—showed that 80 plants were meeting all safety and security standards, while nine more were doing well enough to warrant only slight additional oversight due to one or two items […]

  • TVA Finishes Retaining Wall Around Kingston Coal Ash Cell

    Cleanup of the Kingston Fossil Plant coal ash spill is one step closer to completion. On Mar. 3, the Tennessee Valley Authority (TVA) announced that a retaining wall surrounding a 240-acre ash containment cell was completed nearly a month ahead of schedule. Kingston was the site of the worst coal ash release in U.S. history […]

  • Obama’s Budget Proposal Eliminates Fossil Fuel Subsidies and Cuts EPA Funding

    President Obama submitted his fiscal year 2015 budget proposal on Mar. 4. In it, tax subsidies for fossil fuel companies were under the knife, as was the Environmental Protection Agency’s (EPA’s) piece of the pie. In the Department of Energy’s (DOE’s) overview, it was noted that clean energy technologies are expected to spur future economic […]

  • Obama Approves Nuclear Agreement with Vietnam

    On Feb. 24, President Obama approved a proposed agreement with Vietnam, which would allow for cooperation between the two countries concerning peaceful uses of nuclear energy. The agreement has been in the works for some time and will now undergo a 90-day Congressional review period. Secretary of State John Kerry originally signed the deal with […]

  • Agreement Could Catapult New Nuclear Reactor Technology Forward

    On Feb. 17, Babcock & Wilcox Co. (B&W) and TerraPower announced the signing of a Memorandum of Understanding (MOU) to support the development of the traveling wave reactor (TWR). The TWR is a Generation IV commercial reactor design that uses depleted uranium as fuel. The 1,150-MW liquid sodium-cooled fast reactor is different from typical light […]

  • U.S. Government Guarantees Loans for Two New Nuclear Reactors

    It has been a long time coming, but U.S. Secretary of Energy Ernest Moniz will travel to Waynesboro, Ga., Feb. 20, to mark the issuance of approximately $6.5 billion in loan guarantees for the construction of two new nuclear reactors at the Alvin W. Vogtle Electric Generating Plant. A conditional loan guarantee was offered for […]

  • CCS Could Increase Coal-Fired Electric Generation Costs By 70%–80%

    The first generation of carbon capture and storage (CCS) technologies could increase wholesale power prices by 70% to 80%, but second generation technologies could halve those costs, an Energy Department official told lawmakers at a House hearing on Tuesday. “I continue to believe that coal is actually a required part of a vibrant American economy—part […]

  • Every Megawatt Counts — Nuclear Plant Uprate Approved

    While other companies contemplate early retirement for some nuclear plants due to economic woes, DTE Electric Co. is working to bump up the capacity of its nuclear unit. On Feb. 10, the company received approval from the Nuclear Regulatory Commission (NRC) to increase the generating capacity of the Fermi 2 nuclear power plant by 19 […]

  • COAL POWER Direct—Feb. 12, 2014

    Coal Power Stay Connected Current Issue | Find a Job | Post a Job Duke’s Dan River Station Suffers Coal Ash Spill [UPDATED] 02.04.2014 | Thomas Overton [Update Feb. 10] Duke Energy workers have succeeded in permanently stopping the leak from its coal ash pond at the Dan River Steam Station, the company reported on […]
  • NRC Commissioners Grilled on Nuclear Rules, Security, and Efficiency

    “It’s as if the government—the [Environmental Protection Agency (EPA)] and the [Nuclear Regulatory Commission (NRC)]—is trying to regulate the nuclear energy industry out of business, just like it’s been trying to regulate fossil fuels out of business,” said Sen. Jim Inhofe (R-Okla.), during the U.S. Senate Committee on Environment and Public Works’ eighth NRC oversight […]

  • EPA Reports Toxic Air Releases Down Due in Part to Coal Plants

    The Environmental Protection Agency (EPA) reported on Feb. 4 that total releases of toxic chemicals decreased 12%, while toxic air releases were down 8% in its annual Toxics Release Inventory (TRI) report. The data—from 2012—was compiled from 21,024 facilities that are required to report to TRI. Of that total, only 582 of the facilities fall […]

  • Safety and Oil & Gas Boom Focus of N.D. Generation Conference

    The 35th Annual Energy Generation Conference (EGC) held in Bismarck, N.D., Jan. 28–30, highlighted the importance of North Dakota to national discussions of energy policy. The opening session focused on the oil and natural gas boom currently taking place in the state. The Bakken shale play is expected to produce over one million barrels of […]

  • Idling of Two Coal-Fired Plants Will Cost Jobs

    Big Rivers Electric Corp.—a member-owned, not-for-profit, generation and transmission cooperative serving western Kentucky—plans to idle two of its coal-fired power plants following the loss of its largest industrial load. The D.B. Wilson Station, a 417-MW plant located in Centertown, Ky., will idle on Feb. 1, barring a miracle. Big Rivers simply doesn’t need the power […]

  • The Coal to Gas Exodus Continues

    Alabama Power Co., a subsidiary of Southern Co., has applied for air permits that would authorize the company to retrofit four coal-fired electric generating units, enabling them to add the capability to burn natural gas as a primary fuel. The Alabama Department of Environmental Management gave public notice of the application on Jan. 8. The […]

  • Safety Culture Scrutinized at U.S. Nuclear Plant

    Officials from Wolf Creek Generating Station, a 1,200-MW nuclear plant located northeast of Burlington, Kan., met with the Nuclear Regulatory Commission (NRC) on Jan. 22 to review actions the company has taken in response to the NRC’s issuance of a chilling effects letter on Aug. 19, 2013. The NRC defines a “chilled work environment” as […]

  • Former Nuclear Plant Supervisor Sentenced for Falsifying Records

    A former chemistry manager at a nuclear power facility was fined $500 and sentenced to 18 months’ probation on Jan. 16 for engaging in deliberate misconduct in connection with a matter regulated by the Nuclear Regulatory Commission (NRC). Daniel Wilson pleaded guilty to felony charges of fabricating chemical test results regarding diesel fuel used to […]

  • Will the Nuclear Industry Bite on Indiana’s Bait?

    A new bill authored by state Sen. James Merritt, R-Indianapolis, is designed to promote nuclear power development in Indiana, which doesn’t currently have any operating nuclear power plants. Senate Bill 302 provides that projects involving the construction of nuclear energy production or generating facilities qualify for the financial incentives available for clean energy projects. Current […]

  • Nuclear Revival in the UK—Should the U.S. Take Notice?

    With 16 reactors providing roughly 18% of the UK’s electricity needs, nuclear power is a vital part of the country’s energy supply. The trouble is that all but one of the aging reactors is expected to be permanently shutdown within the next 12 years. Recent developments, however, indicate that there is no reason for the […]

  • How Stealth Combustion Losses Lower Plant Efficiency. Part 2: The Solutions

    Important process variables that affect unit efficiency were reviewed in Part 1 of this two-part report. Many of those process parameters were also identified as related to boiler air in-leakage.  These stealthy combustion losses are difficult to identify or locate yet have a significant effect on boiler combustion efficiency. Keeping your plant operating at or near […]