Tag Archives: Limerick

Oyster Creek Nuclear Alert: As Floodwaters Fall, More Questions Arise

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Oyster Creek Nuclear Generating Station in pre-flood mode. (photo: NRCgov)

New Jersey’s Oyster Creek Nuclear Generating Station remains under an official Alert, a day-and-a-half after the US Nuclear Regulatory Commission declared the emergency classification due to flooding triggered by Hurricane Sandy. An Alert is the second category on the NRC’s four-point emergency scale. Neil Sheehan, a spokesman for the federal regulator, said that floodwaters around the plant’s water intake structure had receded to 5.7 feet at 2:15 PM EDT Tuesday, down from a high of 7.4 feet reached just after midnight.

Water above 6.5 to 7 feet was expected to compromise Oyster Creek’s capacity to cool its reactor and spent fuel pool, according to the NRC. An “Unusual Event,” the first level of emergency classification, was declared Monday afternoon when floodwaters climbed to 4.7 feet.

Though an emergency pump was brought in when water rose above 6.5 feet late Monday, the NRC and plant owner Exelon have been vague about whether it was needed. As of this writing, it is still not clear if Oyster Creek’s heat transfer system is functioning as designed.

As flooding continued and water intake pumps were threatened, plant operators also floated the idea that water levels in the spent fuel pool could be maintained with fire hoses. Outside observers, such as nuclear consultant Arnie Gundersen, suspected Oyster Creek might have accomplished this by repurposing its fire suppression system (and Reuters later reported the same), though, again, neither Exelon nor regulators have given details.

Whether the original intake system or some sort of contingency is being used, it appears the pumps are being powered by backup diesel generators. Oyster Creek, like the vast majority of southern New Jersey, lost grid power as Sandy moved inland Monday night. In the even of a site blackout, backup generators are required to provide power to cooling systems for the reactor–there is no such mandate, however, for spent fuel pools. Power for pool cooling is expected to come either from the grid or the electricity generated by the plant’s own turbines.

As the NRC likes to remind anyone who will listen, Oyster Creek’s reactor was offline for fueling and maintenance. What regulators don’t add, however, is that the reactor still needs cooling for residual decay heat, and that the fuel pool likely contains more fuel and hotter fuel as a result of this procedure, which means it is even more at risk for overheating. And, perhaps most notably, with the reactor shutdown, it is not producing the electricity that could be used to keep water circulating through the spent fuel pool.

If that sounds confusing, it is probably not by accident. Requests for more and more specific information (most notably by the nuclear watchdog site SimplyInfo) from Exelon and the NRC remain largely unanswered.

Oyster Creek was not the only nuclear power plant dealing with Sandy-related emergencies. As reported here yesterday, Nine Mile Point Unit 1 and Indian Point Unit 3–both in New York–each had to scram because of grid interruptions triggered by Monday’s superstorm. In addition, one of New Jersey’s Salem reactors shut down when four of six condenser circulators (water pumps that aid in heat transfer) failed “due to a combination of high river level and detritus from Hurricane Sandy’s transit.” Salem vented vapor from what are considered non-nuclear systems, though as noted often, that does not mean it is completely free of radioactive components. (Salem’s other reactor was offline for refueling.)

Limerick (PA) reactors 1 and 2, Millstone (CT) 3, and Vermont Yankee all reduced power output in response to Superstorm Sandy. The storm also caused large numbers of emergency warning sirens around both Oyster Creek and the Peach Bottom (PA) nuclear plant to fail.

If you thought all of these problems would cause nuclear industry representatives to lay low for a while, well, you’d be wrong:

“Our facilities’ ability to weather the strongest Atlantic tropical storm on record is due to rigorous precautions taken in advance of the storm,” Marvin Fertel, chief executive officer of the Nuclear Energy Institute, a Washington-based industry group, said yesterday in a statement.

Fertel went on to brag that of the 34 reactors it said were in Sandy’s path, 24 survived the storm without incident.

Or, to look at it another way, during a single day, the heavily populated eastern coast of the Unite States saw multiple nuclear reactors experience problems. And that’s in the estimation of the nuclear industry’s top lobbyist.

Or, should we say, the underestimation? Of the ten reactors not in Fertel’s group of 24, seven were already offline, and the industry is not counting them. So, by Fertel’s math, Oyster Creek does not figure against what he considers success. Power reductions and failed emergency warning systems are also not factored in, it appears.

This storm–and the trouble it caused for America’s nuclear fleet–comes in the context of an 18-month battle to improve nuclear plant safety in the wake of the multiple meltdowns and continuing crisis at Japan’s Fukushima Daiichi nuclear facility. Many of the rules and safety upgrades proposed by a US post-Fukushima taskforce are directly applicable to problems resulting from Superstorm Sandy. Improvements to flood preparation, backup power regimes, spent fuel storage and emergency notification were all part of the taskforce report–all of which were theoretically accepted by the Nuclear Regulatory Commission. But nuclear industry pushback, and stonewalling, politicking and outright defiance by pro-industry commissioners has severely slowed the execution of post-Fukushima lessons learned.

The acolytes of atom-splitting will no doubt point to the unprecedented nature of this massive hybrid storm, echoing the “who could have predicted” language heard from so many after the earthquake and tsunami that started the Fukushima disaster. Indeed, such language has already been used–though, granted, in a non-nuclear context–by Con Edison officials discussing massive power outages still afflicting New York City:

At a Consolidated Edison substation in Manhattan’s East Village, a gigantic wall of water defied elaborate planning and expectations, swamped underground electrical equipment, and left about 250,000 lower Manhattan customers without power.

Last year, the surge from Hurricane Irene reached 9.5 feet at the substation. ConEd figured it had that covered.

The utility also figured the infrastructure could handle a repeat of the highest surge on record for the area — 11 feet during a hurricane in 1821, according to the National Weather Service. After all, the substation was designed to withstand a surge of 12.5 feet.

With all the planning, and all the predictions, planning big was not big enough. Sandy went bigger — a surge of 14 feet.

“Nobody predicted it would be that high,” said ConEd spokesman Allan Drury.

In a decade that has seen most of the warmest years on record and some of the era’s worst storms, there needs to be some limit on such excuses. Nearly a million New York City residents (including this reporter) are expected to be without electricity through the end of the week. Residents in the outer boroughs and millions in New Jersey could be in the dark for far longer. Having a grid that simply survives a category 1 hurricane without a Fukushima-sized nuclear disaster is nothing to crow about.

The astronomical cost of restoring power to millions of consumers is real, as is the potential danger still posed by a number of crippled nuclear power plants. The price of preventing the current storm-related emergencies from getting worse is also not a trivial matter, nor are the radioactive isotopes vented with every emergency reactor scram. All of that should be part of the nuclear industry’s report card; all of that should raise eyebrows and questions the next time nuclear is touted as a clean, safe, affordable energy source for a climate change-challenged world.

UPDATE: The AP is reporting that the NRC has now lifted the emergency alert at Oyster Creek.

Too Cheap to Meter, Too Expensive to Compete

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“Clean, safe, and too cheap to meter.” This sunny tagline from the early days of atomic energy has more recently become the quickest way to sum up how dark and dismal its prospects are today–as in, nuclear power has proven itself to be unclean, unsafe, and prohibitively expensive. “Clean, safe and too cheap to meter” now sounds less like boastful marketing, and more like a schoolyard taunt.

The numbers of ways nuclear power plants have betrayed their Madison Avenue mantra has pretty much been the backbeat of this column for nearly ten months now, and 2012 keeps up the cadence.

Exelon Corporation, the nation’s largest owner of nuclear facilities, has already hit a sour note. . . or two.

First, Exelon and Constellation Energy, another major nuclear operator that Exelon agreed to buy last April, have just seen Citigroup downgrade their stock from “buy” to “neutral.” The reason this time, it seems, is not due to the shaky future of nuclear holdings, but instead due to the falling price of natural gas. Gas prices have hit a two-year low thanks to the glut of gas from a nation gone frack-happy.

But why should a Citigroup not worry about the value of nuclear stocks when current problems have required costly shutdowns and repairs, and future improvements that might (might) be required post-Fukushima will necessitate more capital outflow? One need look no further than the same Exelon portfolio, as reflected in a separate story out just one week later:

The U.S. Nuclear Regulatory Commission wants Exelon Corporation to detail its plan regarding a decommissioning fund shortfall for the Limerick Unit 1 nuclear power plant in Pottstown.

“Once we receive the (request for additional information) response, we will make a determination regarding reasonable assurance of adequate decommissioning funding for the plant,” said Neil Sheehan, NRC Public Affairs, via email on Wednesday.

Sheehan said Exelon planned to request rate relief from the Pennsylvania Public Utilities Commission later this year to address the deficit.

“The relief, if approved, would take effect at the beginning of 2013,” Sheehan said.

In other words, a nuclear facility isn’t only ridiculously expensive while it is up and running, generating some power–and so, in theory, some revenue–a nuclear plant is a massive liability for years (decades, really) after it is shut down.

Decommissioning a plant is a process that the Nuclear Regulatory Commission requires operators to finish within 60 years. Yes, it can take that long to safely dismantle a facility, store its moderately radioactive parts and entomb its massively radioactive reactor shell. The cost, as estimated by the NRC itself, is “$300 million or more.”

Indeed, the emphasis should be on “more.” The NRC’s lowball figure not only assumes everything goes smoothly and there are no nasty discoveries, like, say, radioactive contamination of surrounding ground or water, it assumes a constant dollar value over the life (death?) of the decommission. Take note, for instance, that the fund for the decommissioning of one Limerick reactor is at present required to be over $628 million.

But again, why would that not more seriously affect the rating of a company like Exelon, with its vast stable of aged, faulty reactors? Because Exelon, as is the case for all its nuclear brethren, doesn’t expect to have shoulder the costs by themselves–if at all.

Feeling a little light in the decommissioning fund? Do not fear! As pointed out in the story above, Exelon expects rate relief. In other words, Pennsylvania power consumers will pick up the tab in the form of increased electric bills.

Worried the rate hike won’t quite cover it? No problem! As the NRC hints at here and has proven elsewhere, when push comes to dangerous, radioactive shove, the federal government will cover any shortfalls. After all, the alternative–a halfway or half-assed shutdown–is not an acceptable policy option.

Concerned that even with a rate hike and a government bailout something still might go wrong, resulting in pricey lawsuits? Hush, now! Thanks to the Price-Anderson Act, the liability of the nuclear plant operator is remarkably limited.

This is all part-and-parcel of the standard obfuscation procedure and pass-the-buck accounting that allows the nuclear industry to pretend to compete in the energy marketplace. Exelon executives no doubt love to praise the free market, but they are possibly the only ones that get away for anything close to free. Their taxes are discounted, their infrastructure is subsidized, their loans are guaranteed, and their accidents are indemnified, all by state and federal governments, which means all by taxpayers–taxpayers already paying up front for higher energy bills.

Lest this story be misinterpreted, the answer is not, of course, to permit more fracking to continue to drive down the price of natural gas–that option is as rife with dangers as it is ridiculously shortsighted. No, the answer is to take into account all of the money that really goes into nuclear power generation when costing out energy options. Take just a fraction of what the US government expends to backstop atomic energy and invest it instead in improved efficiency, conservation programs, and truly renewable alternatives, and then see what power source can really claim the mantle of clean, safe, and too cheap to meter.

The Party Line – September 9, 2011: Shaken, But Still Not Stirred

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Sunday, September 11, will of course be the tenth anniversary of a tragedy that fundamentally changed America in ways we are still trying to understand. But this 9/11 is also a day for other anniversaries, ones that will likely get little, if any, recognition in the US.

In 1985, for instance, September 11 saw a Keystone Kops-like collection of miscues during a test of the remote shutdown protocols at the Limerick Generating Station, a boiling water nuclear reactor outside of Philadelphia. During the shutdown, a valve on a cooling system failed to open, and attempts to manually open the valve were met by a locked door, and a call for a key, which, after a 15-minute wait, turned out to be the wrong key. Once the proper key was found and the door was opened, the operators found the valve’s hand wheel chained and padlocked to prevent accidental opening. Those keys were in the abandoned control room. Bolt cutters had to be used before the operators could finally open the valve.

All that time, the reactor core’s temperature was increasing. Fortunately, the test was done during startup, when decay heat is relatively low, so control rods were able to slow the reaction enough to provide time to overcome the multiple barriers to opening the valve. Had the plant been operating at full power when this series of problems occurred, the outcome would likely have not been so rosy.

September 11 will also mark six months since the massive earthquake and tsunami that struck northern Japan triggered a series of cataclysmic failures at the Fukushima Daiichi nuclear complex. That accident provides no amusing anecdotes or happy endings, but those horrible events should provide a loud wakeup call and numerous object lessons for nuclear power programs across the globe.

As previously noted, the Japanese nightmare and domestic political realities have spurred German Prime Minister Angela Merkel to announce a rather rapid phase out of her country’s nuclear plants. The Japanese government, too, has spoken of turning away from nuclear power and toward renewable alternatives.

But here in the United States, six months on from Japan’s quake, there are no such proclamations or pledges–if anything, quite the contrary–and almost no movement on even the most incremental of recommendations.

In the face of lessons still not learned, a trio of nuclear experts gathered in Washington, DC on September 8 to highlight key concerns that still have not been addressed six months after the start of the world’s worst nuclear accident. Included on the list are several issues discussed in this space since the Fukushima quake (this is a partial and edited list–please use the link for more concerns and more explanation):

The U.S. regulatory response since Fukushima has been inadequate. “Six months after Fukushima, it seems clear that the U.S. is not going to undertake the type of fundamental, no-holds-barred look at its nuclear regulatory practices that followed the much less serious accident at Three Mile Island some 30 years ago.”

America should avoid post-9/11 mistakes in tightening reactor safety standards. “In responding to Fukushima by issuing orders, the NRC should not make the same mistakes as it did following 9/11, when industry stonewalling delayed implementation of critical security measures for many years. Even today, some post 9/11 security upgrades have not been completed at numerous plants. . . . The U.S. must respond to Fukushima in a much more comprehensive way or it may soon face an accident even worse than Fukushima.”

The U.S. was warned of Fukushima-style problems but failed to act … and is still failing to do so. “U.S. reactors have some of the shortcomings of the Fukushima plants. Furthermore, citizen groups and scientists had tried to call one of these – spent fuel pool vulnerability — to Nuclear Regulatory Commission attention during the last decade. The NRC dismissed these efforts. . . . Without a root cause analysis of its own failure to heed the now validated warnings about spent fuel pools, the NRC may patch the technical problems revealed by Fukushima, but it won’t fix the underlying shortcomings that allow defects to persist until catastrophic events rather than regulatory vigilance force the nuclear industry and the public to face up to them.”

Emergency planning zones in the U.S. must be expanded. “In contrast to the [NRC] Task Force conclusions, we believe that emergency planning zones should be expanded, certain hydrogen control measures should be immediately enforced and spent fuel transfer to dry casks should be accelerated. Also, the safety margins of new reactors need to be reassessed.”

The recent East Coast earthquake should spur more NRC safety analysis. “The earthquake near the North Anna nuclear plant, which reportedly exceeded the plant’s seismic design basis, reinforces the urgency of the NRC Fukushima task force’s recommendation that all plants immediately be reviewed for their vulnerability to seismic and flooding hazards based on the best available information today.”

To that last point, as noted before, the earthquake that struck Mineral, VA in late August should have moved US nuclear regulators to quickly adopt the recommendations of the Fukushima task force. Well, the quake doesn’t seem to have moved the NRC much, but it did move some things, like most of the 117-ton dry storage casks at the North Anna facility. . . and, as we now have learned, pretty much everything else there:

Last month’s record earthquake in the eastern United States may have shaken a Virginia nuclear plant twice as hard as it was designed to withstand, a spokesman for the nuclear safety regulator said on Thursday.

Dominion Resources told the regulator that the ground under the plant exceeded its “design basis” — the first time an operating U.S. plant has experienced such a milestone. . . .

That a facility experienced such a milestone is now known because, over two weeks after the fact, data from the so-called “shake plates” has finally been released (almost a week after it was expected):

“We are currently thinking that at the higher frequencies, the peak acceleration was around 0.26” g, which is a unit of gravity that measures the impact of shaking on buildings, said Scott Burnell, an NRC spokesman.

The plant was designed to withstand 0.12 g of horizontal ground force for parts that sit on rock, and 0.18 g for parts that sit on soil, Burnell said.

Dominion’s sensors recorded average horizontal ground force of 0.13 g in an east-west direction and 0.175 g in a north-south direction, officials said.

The apparent discrepancy seems to stem from the distance between instruments used by the US Geological Survey and those cited by North Anna’s operator, Dominion, but even taking the smaller numbers, the design limits of the plant were exceeded.

Dominion officials have been quick to point out that even though some things have moved and some structures show cracks, those changes are merely cosmetic and in no way dangerous. But nuclear engineer John H. Bickel says that vessels and pipes are not the first things to go in a quake:

[A]n analysis of plants hit by earthquakes had shown that the most vulnerable components were ceramic insulators on high-voltage lines that supply the plants with power and electrical relays, which resemble industrial-strength circuit-breakers and switches.

Even if the relays are not damaged, they might be shaken so that they change positions, cutting off the flow of electricity or allowing it to flow without any command from an operator.

As previously noted (with more than a hint of irony), in order to safely generate electrical power, nuclear plants need an uninterrupted supply of electrical power. Without electricity, cooling systems and important monitors in both the reactors and spent fuel storage pools cannot function. Without effective cooling, nuclear facilities are looking at a series of disasters like the ones encountered at Fukushima Daiichi. That the most quake-vulnerable components directly affect a nuclear plant’s power supply is yet another data point underscoring the urgent need to review and enhance seismic safety at US facilities.

But even before that nation-wide examination can take place, the damage to the shaken North Anna plant needs to be surveyed and analyzed so that Dominion might restart its reactors. What does Dominion need to show in order to get the thumbs up, what criteria need to be met, what repairs or retrofits should be required? To paraphrase the head of the NRC: Who knows?

In an interview last week, NRC Chairman Gregory Jaczko told Reuters it was unclear what the plant would need to show to resume operations because it is the first time an operating plant has sustained a beyond-design-basis quake.

As Hurricane Irene revealed the lack of national guidelines for what to do in the face of an approaching storm, the Virginia earthquake has shown that the United States has no regulatory regime for learning, analyzing, or acting on data from events that exceed the often-negotiated-down design parameters of its nuclear facilities.

In fact, the NRC does not even have a post-quake inspection protocol. Inspections of North Anna are being done according to procedural guidelines drawn up by the Electric Power Research Institute, “a nonprofit utility consortium that has inspected dozens of industrial plants hit by earthquakes around the world.”

Yes, the nuclear industry has written its own post-event checklist, and, in the absence of any other standard, is left alone to use it.

That sort of self-policing leads to some noteworthy analysis, like this from a nuclear industry attorney: “You shake something really hard, and it’s not designed to be shaken that hard — it doesn’t mean that it’s broken.”

But there is something even more disturbing, if that is possible, propagated by the weak regulations and weak-willed regulators. It leaves space for arguments like this one from that same industry lawyer:

The incident helps make the case for new-generation nuclear plants, which have additional safety features. . . . “If you can have a car from 2011 vs. a car from 1978, what are you going to put your toddler in?”

Beyond the fact that no one is actually suggesting the 1978 plants get traded in for newer models (just augmented with them), cars have to compete for consumer dollars in a way that nuclear plants do not. Nuclear plants could not be built, fueled, operated or maintained without massive subsidies, loan guarantees, and infrastructure commitments from the federal government.

Also of note, a 2011 automobile is safer and more efficient than a 1978 model because of government regulation. The auto industry has fought improvements like mandatory airbags, three-point restraints, and CAFE standards, but a strong government imposed those requirements anyway. And your toddler is safer in that car because the Consumer Product Safety Commission reviews the design of child car seats, and laws mandate their use.

Where the comparison does work, however, is that both represent a false choice. Just as a car is not the only way to transport a toddler, nuclear plants are not the only means by which to generate power. And in 2011, there are many more choices, and many safer choices, than there were in 1978.

Which recalls the important contrast between a country such as Germany–which, faced with a restive electorate and lessons to be learned from Japan’s misfortune, has made a commitment to not just trade in nuclear but trade up to renewable alternatives–and the US, where corporate influence and politics as usual have left the government with seemingly few options beyond willful ignorance and calcification.

Even without recognition of the Japan quake’s semi-anniversary, September 11 will probably be a tense day for most Americans, especially those with personal connections to the events of ten years ago. But while remembrance will be hard, it will mostly be so because of an event now relegated to history.

Residents of Japan, still living with an ongoing and ever-evolving threat, cannot so neatly define their anguish. And if there is a message to be found in this coincidental concurrence of dates, it perhaps springs from there. While Americans can debate what could have been done to prevent the attacks of 9/11/2001, it is a debate held in hindsight. For the Japanese dealing with the aftermath of their disaster, hindsight still seems like a luxury to be enjoyed very far in the future.

But, for the United States, a debate about what can be done to prevent a Fukushima-like disaster here is theoretically blessed, both because it is a debate that can be had before the next crisis, and because it is a debate that can be informed by events. And experience, science, economics and common sense are all pretty clear on what needs to be done.