Regulators: Local nuclear station had inoperable safety systems

A battery used to supply power to safety systems at the San Onofre Nuclear Generating Station was inoperable for about four years, federal nuclear regulators announced Monday.

The discovery prompted the U.S. Nuclear Regulatory Commission to announce it has stepped up oversight at the plant, which is operated by Southern California Edison Co.

NRC inspectors found the battery, used to supply power to plant safety systems under some accident conditions, didn’t work between 2004 and when the problem was discovered on March 25.

According to the NRC, the problem was caused by loose electrical connections resulting from inadequate maintenance instructions.

“The problem stemmed from inadequate maintenance procedures,” Elmo E. Collins, a regional administrator with the NRC, said in in a statement. “The problem was promptly corrected, but is troubling because the condition persisted for so long.”

Other emergency batteries were available to supply power to safety systems if needed, but the loss of one reduced the nuclear plant’s safety margins, according to the NRC.

The commission uses a color-coded system to categorize inspection findings, ranging from “green” to “white,” “yellow” and “red,” depending on the safety significance.

The San Onofre Nuclear Generating Station was given a “white” rating, or low to moderate safety significance, according to the NRC.

Related posts:

  1. Completion of artificial reef announced
  2. Water authority urges turning off irrigation systems
  3. Letters to the Editor: Dec. 19, 2008
  4. Desalination plant gets Lands Commission OK
  5. Santa Fe Irrigation District tapping into new water source

Short URL:

Posted by Pat Sherman on Dec 22, 2008. Filed under Archives. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

Leave a Reply



Bottom Buttons 1

Bottom Buttons 2

Bottom Buttons 3

Bottom Buttons 4

Bottom Buttons 5

Bottom Buttons 6



  • 10 Reasons to Generate Your Own Power
    By Martin Learn, Home Energy Systems As we take one step closer towards August, we all prepare for the blazing sun, the heat it brings, and in turn, the cranked-up AC. But instead of seeing the sun as an enemy, something to be protected against, there is a way to embrace that solar power and […]
  • La Jolla Community Calendar July 24-31
    La Jolla Concerts by the Sea continue 2-4 p.m. Sunday, July 27 with the Bill Magee Blues Band, performing electric New York and Chicago-style blues (preview at Scripps Park at La Jolla Cove. Free. (858) 454-1600. […]
  • FRONTLINE CANCER: The value of Comprehensive Cancer Centers
    It’s estimated that approximately 14 million Americans alive today have had cancer. Some are cancer-free; some are still fighting it. This year, they will be joined by another 1.6 million persons who will receive that fearful diagnosis. The grim news, of course, is that the ranks of cancer patients are also trimmed each year by death: More than 585,000 annua […]