Automatic Seabrook Shutdown Probed

Technicians at the Seabrook nuclear power plant were working Thursday to determine the reason for the $6.5-billion facility’s first automatic shutdown, a spokesman said.

Seabrook was operating at 30% power, producing about 210 megawatts, when its turbine automatically shut down Wednesday afternoon. Plant spokesman Rob Williams said that, when the turbine disconnected itself from the New England power grid, the reactor shut down automatically.