One problem with building new nuclear plants? Lack of qualified welders...

According to a recent story in the Arizona Daily Star, as the nuclear industry stirs with the first plans in 30 years to build new power plants in the United States, there's an unexpected hurdle to be overcome: There may not be enough nuclear engineers around anymore to build and run them.

And that goes for highly specialized craftsmen -- like welders.

According to the Star article, David Lochbaum, director for nuclear-safety projects at the Union of Concerned Scientists, said it's not just the lack of experienced engineers, but other specialists who will be required to build the plants.

"When you move beyond the blueprint, it requires welders and pipe fitters and others with specialized knowledge," he said.