Safety Rules for U.S. Nuclear Waste, Plant Outages Advance

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The U.S. Nuclear Regulatory Commission moved closer to imposing tougher safeguards at the nation’s reactors, a year after a disaster in Japan that triggered radiation leaks from a crippled power plant.

The commission led by Chairman Gregory Jaczko voted unanimously to issue three orders for safety steps at 104 operating reactors. The agency now will complete writing the rules, which may be released by March 9, David McIntyre, an NRC spokesman, said in an e-mail. Companies including Southern Co. and Exelon Corp. would have until early next year to write a plan and comply by 2016.