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Edison starts legal action in San Onofre nuclear plant shutdown

July 18, 2013|By Marc Lifsher
  • Southern California Edison Co. is taking legal action against Mitsubishi Heavy Industries over faulty steam generators at the San Onofre Nuclear Generating Station in San Diego County.
Southern California Edison Co. is taking legal action against Mitsubishi… (Gregory Bull/Associated…)

SACRAMENTO -- Southern California Edison Co. has started legal action against the manufacturer of steam generators whose failure forced the permanent closure of the San Onofre nuclear power plant on the northern San Diego County coast.

The Rosemead-based electric utility, as expected, filed a formal Notice of Dispute early Thursday on Mitsubishi Heavy Industries of Japan and its United States subsidiary Mitsubishi Nuclear Energy Systems.

Q&A: Why is it closing and what will it cost?

Edison is the senior partner at the massive nuclear plant. Juniors include San Diego Gas & Electric and the city of Riverside's electric utility.

"Our action is about making sure that Mitsubishi takes responsibility for providing the defective steam generators that led to the closing of SONGS" -- the San Onofre Nuclear Generating Station, said Edison President Ron Litzinger.

In the notice, Edison alleges that Mitsubishi manufactured "a lemon" and could not fix "defects in its product because they were so fundamental and pervasive."

Mitsubishi does not dispute that the generators failed after being installed as part of a repowering project designed to prolong the life of a facility that provided electricity for over 1.4 million homes in Southern California.

Frank Gillespie, Mitsubishi Nuclear's senior vice president, concedes that a previously unknown phenomenon caused the pipes to vibrate and leak, preventing the plant from producing energy.

The contractual dispute, he said, would be over who is responsible for the problem and how much financial liability is involved.

Edison's notice opens a 90-day window for the two sides to resolve the the problem. If that is unsuccessful, Edison would initiate a binding-arbitration proceeding against Mitsubishi as stipulated in the original contract with the Japanese firm.

Damages related to the failed steam generators likely will top $2 billion, according to Edison's most recent business update on costs associated with San Onofre.

ALSO:

Power could be tight without San Onofre

Edison will shut down San Onofre for good

How San Onofre's steam generators sealed nuclear plant's fate

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