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

Wednesday, May 16, 2012

North Korea Resumes Work on Nuclear Power Plant

Story first appeared in The San Francisco Chronicle.
A U.S.-based institute said Wednesday new satellite imagery shows that North Korea has resumed building work on a reactor after months of inactivity.

That indicates the North is pressing on with efforts to expand its nuclear program, the institute says, despite international criticism. North Korea says the reactor is intended to generate electricity but its active pursuit of nuclear weapons raises doubts over its intentions.

The image from a commercial satellite dated April 30 shows progress in construction of the containment building for the light-water reactor at the North's main nuclear facility at Yongbyon, according to the U.S.-Korea Institute at Johns Hopkins School of Advanced International Studies.

But Power Plant Expert Witnesses say that the reactor is unlikely to become operational before 2014 or 2015.

Two U.S. academics who visited the site in November 2010 and have studied subsequent satellite imagery, say the reactor appears designed for electricity generation. Other experts fear the reactor could eventually produce plutonium for bombs.

Pyongyang expelled U.N. monitors from its nuclear facilities three years ago, and there is international concern the secretive nation could soon conduct its third nuclear test, after a failed long-range rocket launch last month.

Regardless of problems with its missiles and uncertainty about another nuclear test, the North is plowing ahead with this reactor, a key part of Pyongyang's strategy to expand its nuclear weapons arsenal.

In November 2010, North Korea unveiled to the U.S. academics a sophisticated uranium enrichment workshop which the North says would provide fuel for the reactor when it is complete, but its centrifuges might be reconfigured to produce weapons-grade highly enriched uranium, giving it a new source of fissile material for arms. North Korea already has reprocessed spent fuel from an older reactor at Yongbyon to extract plutonium used in its two past nuclear tests.

The institute says after rapid progress in building the new reactor in 2011, satellite images showed work stopped between late December and early February but restarted by late March. The pause may have been due, in part, to the December death of longtime ruler Kim Jong Il, but a more likely explanation was that winter weather was approaching, it says.

The April 30 image shows steel rebar and concrete have been added to the cylindrical portion of the reactor containment building that now appears higher than in previous photos. The domed roof lies on the ground next to the building as in previous photos, with cylindrical sections ready for installation, the institute says.


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Tuesday, May 8, 2012

California Nuclear Plant Out of Service

Story first appeared in The Washington Post.

The utility that runs the San Onofre nuclear power plant in California says over 1,300 damaged tubes in its ailing steam generators will be taken out of service.

The seaside plant between San Diego and Los Angeles has been offline for more than three months while investigators probe why hundreds of tubes in the virtually new equipment have eroded rapidly. Power Plant Expert Witnesses are also on hand to assist in the investigations.

The figures released Tuesday come just days after a Southern California Edison executive said the company hopes to restart at least one of the twin reactors next month.

Federal regulators say there is no timetable for a restart, while activists charge the plant is unsafe.

Each of the four generators has nearly 10,000 tubes that carry radioactive water. The number retired is well within the limit allowed to continue operation.


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Friday, April 27, 2012

Nuclear Energy a Touchy Subject

Story first appeared in USA Today.

Three dozen 43-foot-tall centrifuges swirl quietly in a cavernous building in southern Ohio, ready to turn uranium hexafluoride into the enriched fuel that can power America's nuclear power plants.

They stand like stacks of poker chips on a table — the ante for what could be a $2 billion national gamble on nuclear energy.

Energy company USEC wants federal loan guarantees to allow it to build 11,000 centrifuges here, which would spin out enough fuel to power about three dozen nuclear power plants non-stop.

But while plenty of politicians whose districts could benefit from the project support it, the Piketon plant remains stymied by a political standoff. Many Republicans who back the project — called the American Centrifuge Project — have savaged the Presidential administration loan program that would pay for it, while the Energy Department, burned by Republican criticism, has voiced tentative support for the plan but won't authorize federal money for it without congressional approval.

For almost a year, congressional Republicans have criticized the administration's $535 million loan guarantee to now-bankrupt solar panel maker Solyndra. The administration, they say, is unfairly picking "winners and losers" in energy.

Both sides say they want the project to move forward. Both support short-term "bridge" funding to keep the project going until the financing can be worked out. Both say the other side has to make the first move.

The stakes are high: It's an election year, and Ohio is a swing state. USEC estimates the project at its peak will generate 3,158 jobs in Ohio, and 4,284 elsewhere. Pike County, home to the centrifuges, has a 13% unemployment rate — the highest in Ohio. The median household income is about $40,000. The average job at USEC pays $77,316.

Indeed, the project has enjoyed bipartisan support. A USA TODAY review of DOE records shows that no fewer than 46 members of Congress — 32 Republicans and 14 Democrats — have pressured the Obama administration to approve the loan guarantee for USEC.

The congressional support comes from states such as Ohio, Pennsylvania, Tennessee, Kentucky, West Virginia, Missouri, Alabama, Indiana, Maryland, North Carolina and South Carolina— an almost exact overlay of the states that would benefit from the 7,442 jobs the company says would be created.

USEC executives have also funneled another $461,000 through its political action committee to members of Congress from both parties. Since 2005, when Congress first authorized the Department of Energy's loan guarantee program, USEC has invested $15.6 million on lobbying, congressional records show.

Intense security

USEC's Piketon campus, situated in a lush valley at the foothills of the Appalachian Mountains, is so vast that its perimeter security road is 7 miles long. The plant's operators — three-fourths of whom are recruited right off U.S. Navy nuclear warships — take golf carts or bicycles to move around the plant.

The centrifuges are surrounded by a barbed-wire fence — which sits inside an already secure building. Razor wire hangs like Christmas garland from the rafters.

What's remarkable about the American Centrifuge Project, USEC says, is that the process uses only 5% of the electricity of the old gaseous diffusion process formerly used at the site, and which USEC still uses at its sister plant in Paducah, Ky. That alone can reduce greenhouse gas emissions by 10 million tons a year, USEC says.

But the project has had setbacks.

Last June 11, a shift supervisor overseeing a test "cascade" of a few dozen centrifuges routinely started a water pump. That action tripped a circuit breaker, which shut down a motor control center. A backup generator failed to start promptly, and USEC — not immediately realizing the severity of the incident — didn't make a formal incident report to federal regulators until three weeks later.

That account of events was contained in a Nuclear Regulatory Commission report released April 12. The report found five violations, which it described as "less serious" issues with "relatively inappreciable potential safety or security consequences."

The immediate cost to USEC was $9 million, the cost of six centrifuges that had to be scrapped when they crashed during the power outage. The remaining centrifuges have been operating without uranium ever since.

USEC, which is spending $15 million a month just to keep the test project running, lost $540 million overall last year. Its stock price closed Thursday at 83 cents a share and near an all-time low, down from a high of $23.91 five years ago.

That means a company worth less than $120 million is seeking $2 billion in financing.

DOE has kept the door open for the loan guarantee, but has questioned the company's capacity to complete the project and repay the loan. It is sensitive to the criticism brought on by the debacle with Solyndra, a California solar power maker that received $535 million in loan guarantees before going bankrupt.

The concern is echoed by at least one USEC investor.

A Cleveland hedge fund manager who owns part of USEC's debt, said that he doesn't doubt the political support.

The DOE has supported other centrifuges. In 2010, it gave a conditional $2 billion loan guarantee to Areva, a conglomerate whose majority shareholder is the French government, to build centrifuges in Idaho. But that project is temporarily stalled because of a cash situation one executive called "growing pains."

There was no question about the technology, its viability or its economics. That helped Areva sell $5 billion in preliminary orders for uranium, he said. Still, the size of the market is large enough for multiple suppliers to be playing in.

But to critics, the USEC project doesn't make economic sense no matter who's running it.

It's not as though the world's uranium market is in scarcity, and it's not as though we're building new nuclear units at such pace that there's any conceivable possibility of a shortage. The estimated global demand for uranium is down 5% to 15% since the March 2011 tsunami and partial meltdown at the nuclear plant in Fukushima, Japan. Considering the national concern surrounding nuclear energy, it would be prudent for these companies to always make sure that a Nuclear Power Plant Expert is involved to keep things running smoothly.

USEC executives say the Japanese incident may depress uranium demand for two to four years.

But with 60 nuclear plants under construction worldwide, the long term outlook is positive. People aren't going to be able to maintain their lifestyles — their two TVs, their microwave ovens — without nuclear energy.

The company controls 25% of the $8 billion global enriched uranium market, through its Paducah plant and an exclusive arrangement with DOE to enrich weapons-grade Russian uranium through the "Megatons to Megawatts" program.

Indeed, the Bethesda, Md.-based company and the federal government enjoy a close working relationship: USEC was once a part of the DOE until Congress privatized it in 1998, and the centrifuge technology is owned by the DOE and leased to USEC.

Stopgap funding
With the loan guarantee in limbo, USEC has kept the test project running with stopgap funding. Last year, with support from key members of Congress, the DOE agreed to take title of the depleted uranium — a complicated transaction that freed up $44 million for the company.
USEC says it can't continue to keep the project operating after May 31 without more government money.

To keep the company afloat while it considers the loan guarantee, the Obama administration supports another $256 million in research grants over two years. That would help USEC move up to 120 centrifuges, a large enough test cascade that the company hopes will allow it to get either the loan guarantee or private financing.

The Democratic-controlled Senate approved that funding last year, but the Republican House rejected it. The President has proposed $150 million in his 2013 budget, but that money won't be available until October. USEC says it will have to shut down the project by June without more money.

The Energy Secretary has all the authority he needs to make that immediate grant, Republicans say. But he has said that he wants a strong signal from Congress before releasing the money.

The fallout from Solyndra has some in Congress doing some soul searching about their involvement in those decisions.

The Solyndra question has put some USEC supporters in a pickle. Facing congressional scrutiny over Solyndra, the Energy Secretary pointed out that many in Congress had supported loan guarantees for projects benefiting their districts.


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