Tag Archives: small modular reactor (SMR)

The Unsellables and the Super-Acheivers

 Barakah nuclear-power plant under construction in Abu Dhabi 2017

THE Barakah nuclear-power plant under construction in Abu Dhabi will never attract the attention that the Burj Khalifa skyscraper in neighbouring Dubai does, but it is an engineering feat nonetheless. It is using three times as much concrete as the world’s tallest building, and six times the amount of steel. Remarkably, its first reactor may start producing energy in the first half of this year—on schedule and (its South Korean developers insist) on budget. That would be a towering achievement.

In much of the world, building a nuclear-power plant looks like a terrible business prospect. Two recent additions to the world’s nuclear fleet, in Argentina and America, took 33 and 44 years to erect. Of 55 plants under construction, the Global Nuclear Power database reckons almost two-thirds are behind schedule .  The delays lift costs, and make nuclear less competitive with other sources of electricity, such as gas, coal and renewables.
Not one of the two technologies that were supposed to revolutionise the supply of nuclear energy—the European Pressurised Reactor, or EPR, and the AP1000 from America’s Westinghouse—has yet been installed, despite being conceived early this century. In Finland, France and China, all the EPRs under construction are years behind schedule. The main hope for salvaging their reputation—and the nuclear business of EDF, the French utility that owns the technology—is the Hinkley Point C project in Britain, which by now looks a lot like a Hail Mary pass.

Meanwhile, delays with the Westinghouse AP1000 have caused mayhem at Toshiba, its owner. The Japanese firm may announce write-downs in February of up to $6bn on its American nuclear business. As nuclear assets are probably unsellable, it is flogging parts of its core, microchip business instead.

YThis month, Oregon-based NuScale Power became the first American firm to apply for certification of a small modular reactor (SMR) design with America’s nuclear regulators.

“Clearly the momentum seems to be shifting away from traditional suppliers,” says William Magwood, director-general of the OECD’s Nuclear Energy Agency. Both small and large reactors are required. In places like America and Europe, where electricity demand is growing slowly, there is rising interest in small, flexible ones. In fast-growing markets like China, large nuclear plants make more economic sense.
If the South Koreans succeed with their first foreign nuclear programme in Abu Dhabi, the reason is likely to be consistency. Nuclear accidents such as Three-Mile Island in 1979 and Chernobyl in 1986 caused a long hiatus in nuclear construction in America and Europe. But South Korea has invested in nuclear power for four decades, using its own technology since the 1990s, says Lee Jong-ho, an executive at Korea Electric Power (KEPCO), which leads the consortium building Barakah. It does not suffer from the skills shortages that bedevil nuclear construction in the West.

KEPCO always works with the same, familiar suppliers and construction firms hailing from Korea Inc. By contrast, both the EPR and AP1000, first-of-a-kind technologies with inevitable teething problems, have suffered from being contracted out to global engineering firms. Also, South Korea and China both keep nuclear building costs low through repetition and standardisation, says the World Nuclear Association (WNA), an industry group. It estimates that South Korean capital costs have remained fairly stable in the past 20 years, while they have almost tripled in France and America.

Excerpts The nuclear options: How to build a nuclear-power plant, Economist, Jan. 28 2017, at 57

 

Nuclear Reactors: Small + Modular

Small Modular Reactor. Image from http://www.energy.gov/ne/nuclear-reactor-technologies/small-modular-nuclear-reactors

DOE

Small Modular Reactors (SMRs) are nuclear power plants that are smaller in size (300 MWe or less) than current generation base load plants (1,000 MWe or higher). These smaller, compact designs are factory-fabricated reactors that can be transported by truck or rail to a nuclear power site. SMRs will play an important role in addressing the energy security, economic and climate goals of the U.S. if they can be commercially deployed within the next decade….

Because of their smaller size, they also can use passive safety systems and be built underground to limit the dangers of radioactive leaks. The modular design could allow parts of the plant to be made in a factory to ensure consistent design and cheaper costs.

Tennessee Valley Authority (TVA) (see also TVA) is in a joint pilot project with the U.S. Department of Energy to help test the new technology. Dan Stout, senior manager of SMR technology at TVA, said working with DOE to test the new power plant “is part of TVA’s mission,” although he said any final decision will require that the power source is also cost effective. “We’re focused on providing an option that provides reliable, affordable and carbon-free energy, and so we want to pursue this early site permit to give us the option for possibly locating SMRs on the site for 10 to 20 years,” Stout said.

Excerpts from US Department of Energy

and Oak Ridge could take lead in new TVA nuclear design, but critics question secrecy, need