Final report issued on San Onofre Nuclear Plant – Edison not to blame, it was a Mitsubishi computer glitch

The final review of the radiation leak at the San Onofre Nuclear Generating Stations (SONGS) has been completed by the Nuclear Regulatory Commission (NRC). Among its findings are that Southern California Edison (SCE) responded appropriately to the issue, while Mitsubishi Heavy Industries, a company based in Japan, is to blame. They found that Mitsubishi’s “faulty computer modeling” resulted in mismatched components that, after only a year, had worn down significantly.

The good news is that we caught this issue before a catastrophic problem occurred, hinting that the safety protocols from SCE were adequate. The bad news is that we were one computer glitch away from a national disaster.

The outcome of all this is uncertain. You can bet that SCE would like to restart SONGS to start making money again, and they can do so by completing the checklist in the NRC report. They have said publicly this will not be until at least September, probably longer, meanwhile the public is digesting this news and preparing a public hearing from the NRC.

Many are speculating that since the plant was not needed during the heavy-use summer days, maybe it is not needed at all. But, that ignores the fact that other power plants were operating above capacity to compensate. Either way something will need to change, whether it’s an acceptance of the restart of SONGS, a new plan to make normal the over-operation of natural gas plants, or some blended model that takes into account the renewable energy sources coming online in the next few years.

 

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NRC:

 

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