Quake prompts 'unusual event' at Seabrook nuke plant [1]

Seacoast Online - John Breneman, 10/17/12

SEABROOK — An “unusual event” indeed. The 4.0 magnitude earthquake that rumbled across the Seacoast and beyond Tuesday evening triggered normal safety protocols at the Seabrook Station nuclear power plant.

The Nuclear Regulatory Commission declared an “unusual event” — NRC-speak for the lowest of its four levels of emergency classifications — at 7:20 p.m. Tuesday. The declaration was prompted by on-site ground motion resulting from an earthquake centered near Hollis, Maine — about 50 miles from the plant.

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