Replacement Steam Generator (RSG) Document Library

The following documents are related to the San Onofre Nuclear Generating Station (SONGS) Replacement Steam Generators (RSGs). Southern California Edison (SCE) is making these documents available so that the facts relating to the RSGs are publicly known.

Timeline and White Paper

Mitsubishi Heavy Industries ("Mitsubishi") has made inaccurate charges about its ability and willingness to repair or replace its defective RSGs at SCE's San Onofre Nuclear Generator Station ("SONGS"). Mitsubishi's position finds no basis in the parties' contract or in the factual record. As set forth in detail below, for over 16 months, Mitsubishi failed to offer any viable, implementable, and licensable plan that would safely and reliably restore the RSGs to 100% power for their promised, 40-year operational life. Many documents exist that support these facts and that demonstrate their accuracy. SCE has published documents on which it relies in setting forth the real facts. Unfortunately, Mitsubishi claims that many other relevant documents, including hundreds of pages of supporting material, are proprietary and restricted from disclosure. SCE urges Mitsubishi to allow SCE to publish these crucial documents, a partial list of which is at the end of this white paper (Appendix).

These materials were last updated on September 2, 2014.

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Letter from NRC on July 28, 2014 Regarding Closure of Investigation (9/2/2014)
Paper on SCE - SCE's Decision to Retire San Onofre Units 2 & 3: Economic Considerations (11/13/2013)
Timeline (11/4/2013)
Paper on SCE - Mitsubishi Communications Related to Mitsubishi's Failed Efforts to Repair or Replace the Defective RSGs (11/4/2013)

Related Footnote Documents of White Paper

March 23, 2012 P. Dietrich Ltr. to E. Collins
March 27, 2012 E. Collins Ltr. to P. Dietrich
March 13, 2013 Mitsubishi "Supplemental Technical Evaluation Report."
Jan. 10, 2013 P. Coughlin Ltr. to H. Matsuda and Y. Shibata
Jan. 25, 2013 I. Kikuoka Ltr. to P. Coughlin
Feb. 11, 2013 P. Dietrich Ltr. to K. Yamauchi
Feb. 21, 2013 K. Yamauchi Ltr. to P. Dietrich
Apr. 26, 2013 P. Dietrich Ltr. to K. Yamauchi
May 6, 2013 K. Yamauchi Ltr. to P. Dietrich
Sept. 30, 2013 R. Litzinger Ltr. to S. Masamori
SCE July 23, 2012 presentation
Sept. 21, 2012 Steam Generator Repair Team Meeting Summary
Nov. 8, 2012 E. Avella Ltr. to H. Kaguchi
Aug. 29, 2012 H. Kaguchi Ltr. to E. Avella
Aug. 31, 2012 Steam Generator Repair Team Meeting Summary
Sept. 4, 2012 Steam Generator Repair Team Meeting Summary
Aug. 6, 2012 Mitsubishi's Ltr. to E. Avella
Sept. 7, 2012 Steam Generator Repair Team Meeting Summary
Nov. 1, 2012 Steam Generator Repair Team Meeting Summary
Nov. 6, 2012 Steam Generator Repair Team Meeting Summary
Nov. 16, 2012 Steam Generator Repair Team Meeting Summary
Dec. 27, 2012 Kadokami Ltr. to P. Dietrich
Nov. 19, 2012 E. Avella Ltr. to H. Kaguchi
Nov. 28, 2012 H. Kaguchi Response Ltr. to E. Avella
Nov. 8, 2012 E. Avella Ltr. to H. Kaguchi
Nov. 13, 2012 E. Avella Ltr. to H. Kaguchi
Nov. 28, 2012 P. Dietrich Ltr. to K. Yamauchi
Dec. 4, 2012 Steam Generator Repair Team Meeting Summary
Dec. 19, 2012 E. Avella Ltr. to H. Kaguchi
Dec. 19, 2012 P. Dietrich Ltr. to K. Yamauchi
Dec. 20, 2012 H. Kaguchi Ltr. to E. Avella
Dec. 21, 2012 H. Kaguchi Ltr. to E. Avella
Dec. 27, 2012 E. Kadokami Ltr. to P. Dietrich
Jan. 18, 2013 H. Kaguchi Ltr. to E. Avella
Jan. 21, 2013 E. Avella Ltr. to H. Kaguchi
Dec. 27, 2012 E. Kadokami Ltr. to P. Dietrich
Jan. 3, 2013 Steam Generator Repair Team Meeting Summary
Jan. 8, 2013 P. Dietrich Ltr. to K. Yamauchi and E. Kadokami
Jan. 22, 2013 K. Yamauchi Ltr. to P. Dietrich
March 11, 2013 H. Kaguchi Ltr. to E. Avella
May 13, 2013 P. Dietrich Ltr. to K. Yamauchi
Feb. 11, 2013 P. Dietrich Ltr. to K. Yamauchi
Feb. 21, 2013 K. Yamauchi Ltr. to P. Dietrich
Apr. 5, 2013 H. Kaguchi Ltr. to E. Avella
May 13, 2013 P. Dietrich Ltr. to K. Yamauchi
June 4, 2013 K. Yamauchi Ltr. to P. Dietrich
June 18, 2013 P. Dietrich Ltr. to K. Yamauchi

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