TIMELINE: Shutdowns at San Onofre Nuclear Generating Station over 13 years

This timeline of events looks at shutdowns at the San Onofre Nuclear Generating plant over the past 13 years.

 

2013

June 7 – Unit 3 & Unit 2 shut down permanently by SCE* (Source: 10News)

 

2012

January 9 – Unit 2 shut down* 

                January 31 – Unit 3 shut down* 

 

2011

            September 8 – Unit 2 offline grid disturbance

            September 10 – Unit 3 offline grid disturbance

 

2010

            October 9 – Unit 3 refueling outage

 

2009

            September 26 – Unit 2 refueling outage

            December 27 – Unit 3 maintenance outage

 

2008

            April 16 – Unit 3 maintenance outage

            October 13 – Unit 3 steam valve leak *

 

2007

            June 20 – Unit 2 repairs outage*

            October 10 – Unit 3 maintenance outage

            October 21 – Unit 2 maintenance outage

            November 26 – Unit 2 refueling outage

 

2006

            January 3 – Unit 2 refueling outage

            May 8 – Unit 3 mid-cycle maintenance

            October 16 – Unit 3 refueling outage

            December 12 – Unit 3 oil leak*

 

2005

            February 3 – Unit 2 reactor trip** 

            February 15 – Unit 2 abnormal outage*

            April 17 – Unit 2 maintenance outage

            May 4 – Unit 3 maintenance outage

 

2004  

            January 24 – Unit 3 system leak*

            February 9 – Unit 2 refueling outage

            April 10 – Unit 2 reactor trip**

            June 4 – Unit 3 reactor trip**

            September 27 – Unit 3 refueling outage

            November 19 – Unit 2 reactor trip**

 

2003

            January 6 – Unit 3 hot shutdown refueling

            June 21 – Unit 2 hot shutdown

 

2002

            February 27 – Unit 3 turbine trip*

            May 20 – Unit 2 refueling outage

            June 30 – Unit 2 reactor trip**

            November 2 – Unit 2 reactor trip**

 

2001

            January 2 – Unit 3 refueling outage

            February 3 – Unit 3 unusual event electric problem*

            October 13 – Unit 2 maintenance outage

 

1999

            January 2 – Unit 2 refueling outage

            March 27 – Unit 3 refueling outage

            May 13 – Unit 3 reactor trip**

 

*Non-maintenance shutdown

** Unknown cause

(Source: NRC.gov)

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