LOS ANGELES (AP) — A Southern California nuclear power plant violated rules by failing to get approval before eliminating 39 emergency-response jobs after the plant closed last year, government regulators said Friday.A Nuclear Regulatory Commission report Friday said the low-level violation stemmed from changes made in the San Onofre plant’s emergency plan at a time when it was shedding staff.The twin-domed plant between Los Angeles and San Diego was shut down permanently in June. It hadn’t produced electricity since January 2012, after a small radiation leak led to the discovery of extensive damage to tubing that carried radioactive water.The report said plant managers failed to obtain required approval from the agency before making the changes. The positions that were cut ranged from engineers to chemistry and radiation technicians.Southern California Edison, which runs the plant, said it will submit a revised plan in a few days.“It is important to note that there are no public safety issues and the NRC determined there is reasonable assurance that San Onofre’s emergency plan remained effective at all times,” Tom Palmisano, Southern California Edison’s chief nuclear officer, said in a statement.After the plant closed, the company eliminated more than 1,000 positions.