Double Milestone for Safer Reactors

Call it the world’s slowest photo finish. After several decades of engineering, construction flaws and delays, and cost overruns—a troubled birth that cost their developers dearly—the most advanced commercial reactor designs from Europe and the United States just delivered their first megawatt-hours of electricity within one day of each other. But their benefits—including safety advances such as the AP1000’s passive cooling and the EPR’s airplane-crash-proof shell—may offer too little, too late to secure future projects. Continue reading “Double Milestone for Safer Reactors”

Cyclone Exposes Trump’s Grid Fallacy

Extreme weather events have knocked both nuclear and coal-fired power plants offline recently, undercutting the Trump Administration argument that subsidizing aging generators is crucial to prevent blackouts. The latest failure came late last week when Winter Storm Gregory forced a nuclear plant in New England offline, ratcheting up the challenge facing grid operators amidst the “bomb” cyclone’s high winds and freezing temperatures. Continue reading “Cyclone Exposes Trump’s Grid Fallacy”

Palmetto State’s $9-bn Nuclear Boondoggle

“Public trust is at stake here, folks.” That’s how South Carolina’s top power industry regulator described the gravity of local utilities’ decision to walk away from a pair of partially-built nuclear reactors, according to Charleston’s Post and Courier. Public Service Commission chairman Swain Whitfield added that the reactors’ cancellation after $9 billion of investment — more than the state’s annual budget — “is going to shatter lives, hopes and dreams” in South Carolina. South Carolina-based Santee Cooper and SCANA’s abandonment of their pair of new reactors, announced on Monday, also have broader ramifications for the nuclear industry’s self-declared “nuclear renaissance.” The cost overruns and delays afflicting this project and a sister project in Georgia drove the reactor designer and builder Westinghouse Electric Co. into bankruptcy. Cost overruns and political concerns are also squeezing nuclear suppliers from France, South Korea, and Russia. Continue reading “Palmetto State’s $9-bn Nuclear Boondoggle”

Can U.S. Grids Handle 100% Renewables?

Four Days in 2055: Dynamic heat and power supply on the mid-century wind, water and sunlight-fuelled U.S. grid simulated by Stanford’s Mark Jacobson

A battle royale between competing visions for the future of energy blew open today on the pages of a venerable science journal. The conflict pits 21 climate and power system experts against Stanford University civil and environmental engineer Mark Jacobson and his vision of a world fuelled 100 percent by renewable solar, wind, and hydroelectric energy. The criticism of his “wind, water and sun” solution and an unapologetic rebuttal from Jacobson and three Stanford colleagues appear today in the Proceedings of the National Academy of Sciences. In fact, while both sides claim to be objectively weighing the energy options, the arguments and backgrounds of the protagonists belie well-informed affinities for various energy sources (and informed biases against others). As sociologists of science would say, their choice of data and their reading of it reflects hunches, values, and priorities.

Continue reading “Can U.S. Grids Handle 100% Renewables?”

Startup Time for Fukushima’s Frozen Wall

Japan’s TEPCO — operator of the stricken Fukushima nuclear power plant — is about to flip the switch on its infamous ‘ice wall’ intended to divert flowing groundwater around its crippled reactors and thus stem groundwater contamination at the site. The widely mischaracterized and maligned installation—which is a barrier of frozen soil rather than a wall of ice—has every chance of delivering the hoped for results, according to radiation cleanup experts at U.S. national laboratories and feedback from initial system tests. “The frozen barrier is going to work,” predicts Brian Looney, senior advisory engineer at the U.S. Department of Energy’s Savannah River National Laboratory in South Carolina and co-author of an independent assessment of TEPCO’s frozen barrier. Continue reading “Startup Time for Fukushima’s Frozen Wall”

NRC Resisting Europe’s Nuclear Safety Upgrades

Nuclear power plants’ reactor pressure vessels —the massive steel jars that hold a nuclear plant’s fissioning fuel—face incessant abuse from their radioactive contents. And they must be built with extra toughness to withstand pressure and temperature swings during loss-of-cooling accidents like the one that struck Japan’s Fukushima nuclear power plant in 2011. But nuclear safety authorities have recently discovered weaknesses in several pressure vessels, and their contrasting responses suggest that the ultimate lessons from Fukushima are still sinking into international nuclear power culture. This is especially true in the United States, where the Nuclear Regulatory Commission is resisting calls to mandate tougher inspection of RPVs. Continue reading “NRC Resisting Europe’s Nuclear Safety Upgrades”

Could Europe’s New Grid Algorithm Black-out Belgium?

Elia's 4cast app alerts Belgians to blackout threats
Elia’s 4cast app alerts Belgians to blackout threats

Two of the big European power grid stories from 2014 were the software-enabled enlargement of the European Union’s common electricity market and a spate of nuclear reactor shutdowns that left Belgium bracing for blackouts. Those developments have now collided with revelations that the optimization algorithm that integrates Europe’s power markets could potentially trigger blackouts.

The flaw resides, ironically, in a long-anticipated upgrade to Europe’s market algorithm. This promises to boost cross-border electricity flows across Europe, expanding supplies available to ailing systems such as Belgium’s. Earlier this month market news site ICIS reported that the upgrade, in the works since the launch of market coupling in 2010, has been delayed once again Continue reading “Could Europe’s New Grid Algorithm Black-out Belgium?”