San Onofre nuclear plant problem worse than thought: report
By Agence France-Presse
Thursday, July 12, 2012 20:26 EDT
LOS ANGELES — US nuclear regulators published an update on California’s troubled San Onofre power plant Thursday, sparking an expert warning that the problem is more serious than first thought.
A reactor at the nuclear power plant near San Diego was shut down in January after a radiation leak, although the Nuclear Regulatory Commission (NRC) said there was no danger to the public.
Investigations found unexpected erosion on tubes that carry radioactive water, and the entire plant was shut down, forcing Californian authorities to fire up alternative power generation facilities.
On Thursday, an update on the tube erosion, posted on an obscure part of the NRC’s website, showed the situation had worsened.
“This reveals a far greater problem than has been previously disclosed, and raises serious questions about whether it is safe to restart either unit,” said Daniel Hirsch, a nuclear expert at the University of California, Santa Cruz.
The new data shows that more than 3,400 steam generator tubes in the new steam generators at San Onofre have been found to be damaged — about 1,800 in Unit 3 and 1,600 in Unit 2 — he said.