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Japan Nuclear Emergency (2011)

Upgraded vent systems ordered for 31 nuclear reactors, including two at Peach Bottom

The Nuclear Regulatory Commission said Thursday that it has ordered a venting upgrade for nearly a third of the reactors in the country, including ones at the Peach Bottom Atomic Power Station just north of Harford County.

Peach Bottom, in Delta, Pa., has two of the 31 reactors that must now have venting systems that can better handle accidents. The commission's order is part of its review effort following the 2011 nuclear meltdown in Fukushima, Japan, after an earthquake and tsunami.

Scott Burnell, a spokesman for the Nuclear Regulatory Commission, said officials want venting systems in place that can operate "under a wider set of conditions and keep doing the job...