Extreme weather events have knocked both nuclear and coal-fired power plants offline in just the past six months, undercutting the Trump Administration’s argument that subsidizing these aging energy generators is crucial for bolstering grid stability. 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
“Public trust is at stake here, folks.” That’s how South Carolina’s top power industry regulator described the gravity yesterday of local utilities’ decision to walk away from a pair of partially-built nuclear reactors, according to Charleston’s Post and Courier newspaper. 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.” In March 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
Japan’s TEPCO is about to flip the switch on the infamous ‘ice wall’ intended to divert flowing groundwater around its crippled reactors at Fukushima and thus help stem the contamination of fresh groundwater 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, say 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. The report, produced in collaboration with researchers at Looney’s lab and at Pacific Northwest National Laboratory, was completed in February but only released late last month; it found the system’s design to be sound and within the bounds of prior practice. Continue reading
Nuclear power plants’ reactor pressure vessels (RPVs)—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 in the event of a loss-of-cooling accident like the one that occurred at Fukushima in 2011. As the triple meltdowns at Fukushima Daiichi showed, the next layer of defense against a nuclear release—the so-called containment vessels—can not be counted on to actually contain molten nuclear fuel that breaches the RPV.
Nuclear safety authorities have recently discovered weaknesses in several RPVs, and their contrasting responses suggest that the ultimate lessons from Fukushima are still sinking into international nuclear power culture—especially in the United States, where the Nuclear Regulatory Commission (NRC) is resisting calls to mandate tougher inspection of RPVs. Continue reading
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
A bad year for nuclear power producers has Belgians and Britons shivering more vigorously as summer heat fades into fall. Multiple reactor shutdowns in both countries have heightened concern about the security of power supplies when demand spikes this winter.
In Belgium, rolling blackouts are already part of this winter’s forecast because three of the country’s largest reactors — reactors that normally provide one-quarter of Belgian electricity — are shut down. Continue reading
After months of negotiation, the French government has unveiled a long-awaited energy plan that is remarkably true to its election promises. The legislation’s cornerstone is the one-third reduction in the role of nuclear power that President François Hollande proposed on the campaign trail in 2012.
Under the plan, nuclear’s share of the nation’s power generation is to drop from 75 percent to 50 percent by 2025, as renewable energy’s role rises from 15 percent today to 40 percent to make up the difference. That is a dramatic statement for France, which is the world’s second largest generator of nuclear energy, after the United States. France has a globally-competitive nuclear industry led by state-owned utility Electricité de France (EDF) and nuclear technology and services giant Areva. Continue reading