Boilers, Nuclear

SCE: MHI didn’t offer “viable” plan to repair faulty nuclear generators at SONGS

Southern California Edison (SCE) released a white paper that the utility says shows that Mitsubishi failed to offer a “viable, implementable and licensable plan” to reliably restore the replacement steam generators at San Onofre Nuclear Generating Station in California to full power or for their 40-year operational life.

SCE says that once the Mitsubishi-designed and manufactured replacement generators failed, they “spent hundreds of millions of dollars to investigate, repair and keep San Onofre in a state of readiness for potential restart.” SCE claims that Mitsubishi did not provide SCE with complete documentation regarding the generators’ failures and potential repairs, did not provide a final repair recommendation and failed to substantiate that the repair and replacement proposals would resolve the design issues. The documents also allege that Mitsubishi failed “to fulfill its contractual obligation to ‘repair or replace (as appropriate) any defective part’ of the replacement steam generators ‘at its sole expense with due diligence and dispatch.’”

Mitsubishi has said that the language in the contract only applies to financial information necessary to support invoices, and that they have advanced more than $45 million against its warranty obligations in December 2012.

SCE announced in June that it was shutting down and decommissioning the San Onofre plant. The U.S. Nuclear Regulatory Commission said in September that Mitsubishi’s faulty design caused the plant to be shut down. The decommissioning process is expected to cost at least $4 billion. 

To read SCE’s white paper, click here.

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