It seems every time there is any development in nuclear technology, the media immediately starts equating it with weapons and assumes that it will be used for such. Not only that, but it also seems that the prevailing belief is that the only way to keep the world safe is to assure the United States does not engage in the new technology, because, if we don’t, well then obviously nobody else will, right?
Scientists have long sought easier ways to make the costly material known as enriched uranium — the fuel of nuclear reactors and bombs, now produced only in giant industrial plants.
One idea, a half-century old, has been to do it with nothing more substantial than lasers and their rays of concentrated light. This futuristic approach has always proved too expensive and difficult for anything but laboratory experimentation.
Until now.
In a little-known effort, General Electric has successfully tested laser enrichment for two years and is seeking federal permission to build a $1 billion plant that would make reactor fuel by the ton.
That might be good news for the nuclear industry. But critics fear that if the work succeeds and the secret gets out, rogue states and terrorists could make bomb fuel in much smaller plants that are difficult to detect.
Iran has already succeeded with laser enrichment in the lab, and nuclear experts worry that G.E.’s accomplishment might inspire Tehran to build a plant easily hidden from the world’s eyes.
Backers of the laser plan call those fears unwarranted and praise the technology as a windfall for a world increasingly leery of fossil fuels that produce greenhouse gases.
But critics want a detailed risk assessment. Recently, they petitioned Washington for a formal evaluation of whether the laser initiative could backfire and speed the global spread of nuclear arms.
“We’re on the verge of a new route to the bomb,” said Frank N. von Hippel, a nuclear physicist who advised President Bill Clinton and now teaches at Princeton. “We should have learned enough by now to do an assessment before we let this kind of thing out.”
New varieties of enrichment are considered potentially dangerous because they can simplify the hardest part of building a bomb — obtaining the fuel.
General Electric, an atomic pioneer and one of the world’s largest companies, says its initial success began in July 2009 at a facility just north of Wilmington, N.C., that is jointly owned with Hitachi. It is impossible to independently verify that claim because the federal government has classified the laser technology as top secret. But G.E. officials say that the achievement is genuine and that they are accelerating plans for a larger complex at the Wilmington site.
“We are currently optimizing the design,” Christopher J. Monetta, president of Global Laser Enrichment, a subsidiary of G.E. and Hitachi, said in an interview.
The company foresees “substantial demand for nuclear fuel,” he added, while conceding that global jitters from the crisis at the Fukushima Daiichi plant in Japan “do create some uncertainty.” G.E. made those reactors.
Donald M. Kerr, a former director of the Los Alamos weapons lab who was recently briefed on G.E.’s advance, said in an interview that it looked like a breakthrough after decades of exaggerated claims.
Laser enrichment, he said, has gone from “an oversold, overpromised set of technologies” to what “appears to be close to a real industrial process.”
…
The plan was to exploit the extraordinary purity of laser light to selectively excite uranium’s rare form. In theory, the resulting agitation would ease identification of the precious isotope and aid its extraction.
At least 20 countries and many companies raced to investigate the idea. Scientists built hundreds of lasers.
Ray E. Kidder, a laser pioneer at the Livermore nuclear arms lab, estimated that the overall number of scientists involved globally ran to several thousand.
“It was a big deal,” he said in an interview. “If you could enrich with lasers, you could cut the cost by a factor of 10.”
The fervor cooled by the 1990s as laser separation turned out to be extremely hard to make economically feasible.
Not everyone gave up. Twenty miles southwest of Sydney, in a wooded region, Horst Struve and Michael Goldsworthy kept tinkering with the idea at a government institute. Finally, around 1994, the two men judged that they had a major advance.
The inventors called their idea Silex, for separation of isotopes by laser excitation. “Our approach is completely different,” Dr. Goldsworthy, a physicist, told a Parliamentary hearing.
….
In May 2006, G.E. bought the rights to Silex. Andrew C. White, the president of the company’s nuclear business, hailed the technology as “game-changing.”
Mr. Monetta of Global Laser Enrichment, the G.E.-Hitachi subsidiary, said the envisioned plant would enrich enough uranium annually to fuel up to 60 large reactors. In theory, that could power more than 42 million homes — about a third of all housing units in the United States.
The laser advance, he added, will promote energy security “since it is a domestic source.”
In late 2009, as G.E. experimented with its trial laser, supporters of arms control wrote Congress and the regulatory commission. The technology, they warned, posed a danger of quickening the spread of nuclear weapons because of the likely difficulty of detecting clandestine plants.
Experts called for a federal review of the risks. In early 2010, the commission resisted.
Late last year, the American Physical Society — the nation’s largest group of physicists, with headquarters in Washington — submitted a formal petition to the commission for a rule change that would compel such risk assessments as a condition of licensing.
“The issue is too big” to leave to the federal status quo, Francis Slakey, a physicist at Georgetown University and the society official who drafted the petition, said in an interview. He added that Mr. Obama or Congress might eventually have to get involved.
This year, thousands of citizens, supporters of arms control, nuclear experts and members of Congress wrote the commission to back the society’s effort. Many of them cited well-known failures in safeguarding secrets and detecting atomic plants.
But the Nuclear Energy Institute, an industry group in Washington, objected. It said new precautions were unnecessary because of voluntary plans for “additional measures” to safeguard secrets.
A commission spokesman said the petition would be considered next year. In theory, the risk-assessment plan, if adopted, could slow or stop the granting of a commercial license for the proposed laser plant or could result in design improvements.