SAN CLEMENTE (CBS) — A partial shutdown of the San Onofre nuclear power plant was in effect Wednesday after sensors detected a possible leak in one of the reactor units.

Jennifer Manfre with Southern California Edison told KNX 1070 there is no immediate danger to the public or to Edison workers after a sensor indicated a possible leak into a steam generator tube in Unit 3.

A spokesman for the Nuclear Regulatory Commission confirmed that some radioactive gas apparently leaked into an auxiliary building. It is unclear if any of it was released into the atmosphere, and if any did, it would have been a “very, very low level of radioactivity” that would be “barely measurable.”

The shutdown comes as Unit 2 at the plant is currently offline for a previously scheduled maintenance, refueling and technology upgrade outage.

However, the shutdown of both units will not be a factor in determining when Edison will put Unit 3 back online, Manfre said.

“It’s an investigation, and it’ll take time, and of course we’ll want to do that to ensure safety before bringing it online again,” she said.

Comments (15)
  1. Trenton says:

    Mat be Charlie can fix it!

  2. MW says:

    Did they not say the same in Japan ?

  3. k says:

    why did I see a small circular cloud over the mountain that looked like a fire?? and haze?? I am downwind from San Onofre. Was it coincidence??? Seemed so odd to me at the time (before I knew about the leak) that I almost took a picture of this “rogue cloud” haze.

  4. Kmandingo says:

    It’s soooooo hard to believe authorities when it comes to nuclear mishaps. So, I’m not buying it. The spokesman used the term “relatively” when discussing the danger level but never said relative to what?

  5. Cindy duck says:

    Errrr, scary, I have to drive by there in a couple of weeks.

  6. bugman says:

    We,do not know,after japan,the heat is different here, piercing,nobody that knows wants to say anything.That scares me!!!!!and now this?

  7. The most shocking aspect of this report is it’s existence. Media likes blacking out nuclear stories a bit too much. Search ‘Nebraska nuclear blackout’

    Or check this…..

  8. Raymond Hill says:

    Among all utilities nationwide, Southern California Edison has one of the WORST safety records. As a former employee (writing this under a false name), I can tell you San Onofre is the poster child for outdated safety and information security. It’s a sitting duck for just about any kind of terrorism – cyber or otherwise. I would suspect the situation is much worse than SCE or the CPUC are reporting.