Yesterday Southern California Edison submitted plans to restart one of its two nuclear generators at the San Onofre Nuclear Generating Station (SONGS). The other generator is being shut down permanently. Both units showed radioactive damage and required repairs.
Unit 2, the generator that will be turned on, had six tubes showing extreme decay, and 1,600 overall with some decay. Unit 3, which will remain shut down, had 381 showing extreme decay, and 1,800 with some decay. Edison reports that a team of independent experts inspected these repairs and approved the plan to turn on Unit 2. These plans were submitted to the Nuclear Regulatory Commission and are awaiting approval.
If accepted Unit 2 will run for five months at 70% power, and then turn off for “inspection of the steam generator tubes to ensure the continued structural integrity of the tubes, to measure tube wear and to confirm that the solutions are working.” At the same time, Edison plans to defuel Unit 3, which “refers to the carefully executed transfer of fuel from the reactor into the spent fuel pool in a strong, reinforced building where it is secure and constantly monitored.”
This is a “longer term outage mode” and there are no plans to bring it back online “in the near future”.
In a separate release from a review started two years ago, Edison plans to downsize the staff at SONGS by 730 employees, a 33% reduction. The press release said this was for achieving greater efficiencies like other nuclear plants. But there was also a mention of the financial losses at the plant due to the shutdown, and a reference to Unit 3 that “will not be operating for some time.”
There is a public meeting about this information scheduled for October 9 at 6pm in the St. Regis Hotel in Monarch Beach. There will also be a live stream of proceedings available at video.nrc.gov – starting one hour before the meeting. The official pdf notice of the meeting and a blog post with updates and comments.