Showing posts with label nuclear power. Show all posts
Showing posts with label nuclear power. Show all posts

Thursday, February 7, 2013

What A Nuclear Accident May Cost


Major Nuclear Accident Would Cost France $580 Billion: Study -- Reuters

(Reuters) - A nuclear accident similar to the one at Japan's Fukushima reactor would cost France about 430 billion euros ($580 billion), or 20 percent of its economic output, French nuclear safety institute IRSN said in a study on the possible financial impact of a nuclear crisis.

A major disaster damaging one of France's 58 nuclear reactors and contaminating the environment with radioactive material would displace an estimated 100,000 people, destroy crops and create massive power outages, the study said.

 "A major accident would have terrible consequences, but we would have to deal with them because the country wouldn't be annihilated, so we have to talk about it, however difficult it is," Jacques Repussard, the head of the public-funded IRSN, said on Wednesday at a presentation at the Cadarache nuclear research centre in southeastern France.

 Read more ....  

My Comment: The Chernobyl disaster left a legacy that will be present in that part of the Ukraine for centuries .... and the cost is unimaginable. If such a disaster should strike France .... ditto there. Now just imagine what a nuclear war would cost.

Friday, March 23, 2012

Germany Unprepared For A Major Nuclear Disaster

(Click on Image to Enlarge)

Germany Unprepared For Major Nuclear Disaster -- Spiegel Online

If a nuclear disaster comparable to Fukushima were to hit a German nuclear plant, authorities would be unprepared to handle it, and scientific projections show that radiation would likely spread much further than previous estimates. But government agencies have done little to address the problem. Critics call the delay a "scandal."

The projected catastrophe would begin on the cold winter's day of Dec. 1, 2010. In the scenario envisioned by scientists, fuel elements begin melting at the Philippsburg 2 nuclear power plant in the southwestern German state of Baden-Württemberg. Engineers release pressure to prevent the plant from exploding, and for the next 25 days, radioactive clouds move north toward the Rhine Valley, over the cities of Speyer and Hockenheim, toward Mannheim and Heidelberg.

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My Comment
: Hmmmm .... I doubt that anyone can really be prepared for a major nuclear disaster.

Monday, March 8, 2010

The US Is Lagging On Nuclear Reactor Technology

Backing old technologies (Image: Bloomberg/Getty)

From New Scientist:

IT SEEMS obvious: if you're planning a new generation of nuclear power stations, you should invest in the most advanced and efficient designs available. Yet that's not what seems to be happening in the US.

The first new nuclear power plants on American soil for 30 years could soon be under construction. President Barack Obama has promised tens of billions of dollars in loan guarantees for reactor builders, of which $8.3 billion was last month committed to back the construction of two Westinghouse AP1000 light water reactors.

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Saturday, December 12, 2009

Map Of Every Nuclear Explosions Since 1945


Our Century of Fallout: Every Nuclear Detonation, Mapped -- Gizmodo

Everyone's got a notion of how the last century went, in terms of nuclear explosions. There was Hiroshima, then Nagasaki. There were some nuclear tests out in the desert, and the ocean. But would you believe there've been over 2000?

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CSN Editor: A full sized version is here.

Friday, December 4, 2009

A Uranium Shortage Could Derail Plans To Go Nuclear To Cut Carbon Emissions

From The Economist:

THERE is an awesome amount of energy tied up in an atom of uranium. Because of that, projections of the price of nuclear power tend to focus on the cost of building the plant rather than that of fuelling it. But proponents of nuclear energy—who argue, correctly, that such plants emit little carbon dioxide—would do well to remember that, like coal and oil, uranium is a finite resource.

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Thursday, November 26, 2009

Nuclear Fuel: Are We Heading For A Uranium Crunch?

Lack of incentive to invest in more uranium mines
(Image: Robert Francis/Robert Harding/Rex Features)


From New Scientist:

AS THE world prepares for the largest investment in nuclear power in decades, owners of uranium mines last week raised the prospect of fuel shortages. To make things worse, the reliability of estimates of the amount of uranium that can be economically mined has also been questioned.

Volatile oil and gas prices, along with the threat of global warming, have pushed governments to reconsider nuclear energy, partly because it is a low-carbon technology and partly because uranium supplies seem plentiful.

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Monday, November 23, 2009

How Long Can a Nuclear Reactor Last?

OLDIE BUT GOODIE: Extending the life span of aging nuclear power plants could be essential to meet the nation's energy needs. WIKIMEDIA COMMONS/GREUDIN

From Scientific American:

Industry experts argue old reactors could last another 50 years, or more.

Could nuclear power plants last as long as the Hoover Dam?

Increasingly dependable and emitting few greenhouse gases, the U.S. fleet of nuclear power plants will likely run for another 50 or even 70 years before it is retired -- long past the 40-year life span planned decades ago -- according to industry executives, regulators and scientists.

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Tuesday, November 10, 2009

Ten Nuclear Stations To Be Built In the UK In Bid To Prevent Energy Shortage


From Times Online:

Ten nuclear power stations are to be built in Britain at a cost of up to £50 billion as the Government tries to prevent the threat of regular power cuts by the middle of the coming decade.

The nuclear industry welcomed the plans, but critics said that ministers had acted too late to avoid an energy crunch caused by the closure of ageing coal-fired stations.

Although the sites were known to be in line for development, the announcement signals the Government’s increasing ambition for nuclear power.

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Saturday, November 7, 2009

The Future Of Nuclear Power


From MIT:

Introduction

An interdisciplinary MIT faculty group decided to study the future of nuclear power because of a belief that this technology is an important option for the United States and the world to meet future energy needs without emitting carbon dioxide and other atmospheric pollutants. Other options include increased efficiency, renewables, and carbon sequestration, and all may be needed for a successful greenhouse gas management strategy. This study, addressed to government, industry, and academic leaders, discusses the interrelated technical, economic, environmental, and political challenges facing a significant increase in global nuclear power utilization over the next half century and what might be done to overcome those challenges.

This study was supported by the Alfred P. Sloan Foundation and by MIT's Office of the Provost and Laboratory for Energy and the Environment.

Read more ....

Wednesday, August 19, 2009

NASA Successfully Tests Nuclear Reactor to Power Future Moon Bases

Gone Fission : See it bigger. John MacNeil

From Popular Science:

For a while now, NASA has been planning to use a nuclear fission reactor to power future bases on the Moon and Mars. They have now finally begun testing a Stirling engine-based system, subjecting it to simulated extraterrestrial conditions to examine how it would fare as a lunar power generator.

The fission reactor uses a sodium-potassium liquid metal mixture to transfer heat to a Stirling engine, which then uses gas pressure for electricity conversion. Testing has been successful so far, as researchers have been able to generate a constant 2.3 kilowatts of power from the engine, using a non-nuclear heat source. With the full nuclear reactor running, their goal is to produce 40 kilowatts of power.

Read more ....

Thursday, August 13, 2009

Drive For Atomic Energy Adds To Nuclear Challenge: US

Steam billows from cooling towers at a nuclear power generating station in Illinois. A senior US official acknowledged on Wednesday that the growing demand for atomic energy in response to climate change was adding to the challenges of preventing the spread of nuclear weapons. (AFP/Getty Images/File/Scott Olson)

From Yahoo News/AFP:

GENEVA (AFP) – A senior US official acknowledged on Wednesday that the growing demand for atomic energy in response to climate change was adding to the challenges of preventing the spread of nuclear weapons.

"Some people are calling this a nuclear renaissance, it's very much in vogue," said Susan Burk, the US president's special representative for nuclear non-proliferation in what she termed her first public presentation.

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Sunday, April 5, 2009

Nuclear Industry's New Burst Of Energy

The Salem nuclear plant's cooling tower forms a backdrop as a tanker cruises south on the Delaware River near Port Penn, Del. JOHN COSTELLO / Staff Photographer

From Philadelphia Inquirer:

Thirty years ago, the nuclear energy industry in the United States seemed all but headed for the scrapyard. Now it's poised for a rebirth.

The impetus is climate change. Nuclear power is touted as the one major electricity source that's emission-free and reliable, able to generate massive amounts of power night and day, in wind and calm.

But hovering over nuclear's new dawn is an incident that began at 4 a.m. on March 28, 1979.

Deep within Reactor 2 at the Three Mile Island nuclear power plant along the Susquehanna River near Harrisburg, main water pumps failed.

At the end of a cascade of disasters, the reactor core melted down, though the containment walls were not breached.

The accident and other factors set the industry reeling. Costs rose. Plants were canceled.

Read more ....

Friday, March 6, 2009

Yucca No Longer Option For Waste Site

In this June 25, 2002, photo, the view from the summit ridge of the proposed Yucca Mountain nuclear waste dump near Mercury, looking west toward California. For two decades, a ridge of volcanic rock 90 miles northwest of Las Vegas known as Yucca Mountain has been the sole focus of government plans to store highly radioactive nuclear waste. Associated Press file photo

From Nevada Appeal:

WASHINGTON — For two decades, a ridge of volcanic rock 90 miles northwest of Las Vegas known as Yucca Mountain has been the sole focus of government plans to store highly radioactive nuclear waste.

Not anymore.

Despite the $13.5 billion that has been spent on the project, the Obama administration says it’s going in a different direction.

It slashed funding for Yucca Mountain in its recently announced budget.

And on Thursday, Energy Secretary Steven Chu told a Senate hearing that the Yucca Mountain site no longer was viewed as an option for storing reactor waste, brushing aside criticism from several Republican lawmakers.

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Sunday, February 15, 2009

Mini Nuclear Plants In Alaska

The Toshiba 4S (Super-Safe, Small and Simple) nuclear power plant is designed to be delivered, installed, and carried away 30 years later. It may meet the needs of remote sites around the world. Adapted by Morgan Ryan and Stephanie Freese from image provided by Toshiba Corporation.

A Nuke on the Yukon?

Mini-nukes arrive at the regulatory gate. Will they get through?

Morgan Ryan

Galena, Alaska, could be the type specimen for remoteness. A tiny town of about 700 on a bend of the Yukon River, it has no roads in and depends on the river for food, fuel and supplies. The river is frozen eight to nine months of the year. Galena residents pay three times the national average per kilowatt hour for diesel-generated electricity. Alternative energy would have special appeal for Galena, but with an evening that stretches 20 hours in the winter, solar is out. With the help of Toshiba and its American holding, Westinghouse, Galena is thinking nuclear.

Read more ....

Monday, February 2, 2009

Nuclear Fusion Fission Hybrid Reactor To Destroy Waste

Photo from ABC News (Australia)

From Future Pundit:

The idea behind long term (tens or hundreds of thousands of years) nuclear waste storage facilities is that we can't solve the nuclear waste disposal problem quickly. But matter is so manipulable in the hands of sufficiently smart scientists and technologists that sometimes supposedly insolvable problems become solvable. UT Austin researchers think they know how to convert nuclear power plant waste into far safer elements with a hybrid reactor.

AUSTIN, Texas--Physicists at The University of Texas at Austin have designed a new system that, when fully developed, would use fusion to eliminate most of the transuranic waste produced by nuclear power plants.

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Friday, January 30, 2009

Atomic Weight: Balancing The Risks And Rewards Of A Power Source

DAVIS BESSE: The nuclear power plant near Toledo, Ohio, was shut down for two years due to an equipment failure that might have resulted in a catastrophic meltdown if it had continued to go without detection. Courtesy of NRC

From Scientific American:

Nuclear power--like most forms of electricity generation--carries inherent risks. Is it worth the minor chance of a major catastrophe?

On Feb. 16, 2002, the nuclear power plant called Davis–Besse on the shores of Lake Erie near Toledo, Ohio, shut down. On inspection, a pineapple-size section on the 6.63-inch- (16.84-centimeter-) thick carbon steel lid that holds in the pressurized, fission-heated water in the site's sole reactor had been entirely eaten away by boric acid formed from a leak. The only thing standing between the escape of nuclear steam and a possible chain of events leading to a meltdown was an internal liner of stainless steel just three sixteenths of an inch (0.48 centimeter) thick that had slowly bent out about an eighth of an inch (0.32 centimeter) into the cavity due to the constant 2,200 pound-per–square-inch (155-kilogram-per-square-centimeter) pressure.

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Monday, January 26, 2009

How Long Will The World's Uranium Supplies Last?

YELLOWCAKE: There should be enough uranium to fuel the world's current fleet for more than 200 years. Courtesy of Cameco Corporation

From Scientific American:

How long will global uranium deposits fuel the world's nuclear reactors at present consumption rates?

Steve Fetter, dean of the University of Maryland's School of Public Policy, supplies an answer:
If the Nuclear Energy Agency (NEA) has accurately estimated the planet's economically accessible uranium resources, reactors could run more than 200 years at current rates of consumption.

Most of the 2.8 trillion kilowatt-hours of electricity generated worldwide from nuclear power every year is produced in light-water reactors (LWRs) using low-enriched uranium (LEU) fuel. About 10 metric tons of natural uranium go into producing a metric ton of LEU, which can then be used to generate about 400 million kilowatt-hours of electricity, so present-day reactors require about 70,000 metric tons of natural uranium a year.

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Tuesday, December 16, 2008

Can Nuclear Power Compete?

From Science America:

Newly approved reactor designs could reduce global warming and fossil-fuel dependence, but utilities are grappling with whether better nukes make market sense

On an August afternoon in Washington, D.C., typically miserable for its heat, humidity and stillness, reporters gathered at a downtown hotel not known for its air-conditioning. Stuffed inside a windowless conference room that was being heated still further by the television people’s lights, we waited for Michael J. Wallace, who had been trying, in fits and starts, to unveil nuclear power’s second act.

On arrival, Wallace, a meticulous manager not known for ad-libbing, looked out over the sweating reporters and smiled. “It’s days like today that highlight the real need for new, emissions-free, baseload power,” he said. Unless we get started soon, he added, rolling blackouts could become the norm.

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