LOS ANGELES (AP) — The Nuclear Regulatory Commission on Wednesday rejected a senior federal expert’s recommendation to shut down California’s last operating nuclear power plant until the agency can determine whether its twin reactors can withstand powerful shaking from nearby earthquake faults.

In a decision written by Executive Director for Operations Mark Satorius, the agency concluded there is no immediate or significant safety concern at the Diablo Canyon plant, which sits on a seaside bluff midway between Los Angeles and San Francisco.