San Onofre Nuclear Generating Station

South­ern Cali­for­nia Edis­on an­nounced June 7 that it would shut down the troubled San Ono­fre nuc­le­ar power plant.

The move comes 17 months after the San Ono­fre plant was closed be­cause of prob­lems in steam gen­er­at­or sys­tems. The plant powered about 1.4 mil­lion house­holds in South­ern Cali­for­nia be­fore the out­age.

A Ma7 21, 1964 art­icle noted that the plant was pro­jec­ted to cost about $95.7 mil­lion and gen­er­ate enough power to meet the needs of 500,000 people.
A Janu­ary 29, 1968 art­icle marked the emer­gence of a “huge steel ball” that could be “the first of many pop­ping up along the South­ern Cali­for­nia coast in the next 10 to 20 years to provide a new sup­ply of elec­tri­city and wa­ter for the na­tion’s fast­est grow­ing re­gion.”
A re­port re­leased March 8 by the Nuc­le­ar Reg­u­lat­ory Com­mis­sion provides the most de­tailed pic­ture to date of how the flawed sys­tem at San Ono­fre was de­signed. It was writ­ten by Mit­subishi Heavy In­dus­tries, which built the gen­er­at­ors.