SAN DIEGO (CNS) - A consultant concluded that one of the two reactors at the San Onofre Nuclear Generating Station can be safely restarted and put to use at full power, Southern California Edison announced Monday.
The utility, operator and majority owner of SONGS, said a technical evaluation by Intertek APTECH of Sunnyvale -- which came in response to Nuclear Regulatory Commission questions -- found that Unit 2 could operate at 100 percent with full integrity of steam generator tubes.
The nuclear plant on the northern San Diego County coastline has been idle since January 2012, when a small leak was found in the other reactor, Unit 3. No one was hurt, and the reactor was shut down.
Unit 2 was undergoing scheduled maintenance at the time and hasn't been restarted.
A subsequent investigation found that steam generator tubes were degrading faster than expected, and many of them were replaced.
SCE, which owns nearly 80 percent of the plant, has filed a plan with the NRC to restart Unit 2 at 70 percent power.
"While we have no intent to restart Unit 2 at full power, this demonstrates the amount of safety margin we have built into our analyses," said Pete Dietrich, SCE's senior vice president and chief nuclear officer. "We welcome this additional safety analysis but remain steadfast in our commitment to restart Unit 2 at only 70 percent power."
Anti-nuclear activists have challenged the restart plans. They contend the steam generators, installed a few years ago, were of such a different design from their predecessors that the utility should have had to go through an extensive license amendment process.
An NRC timeline shows that a decision on the restart plan could come in late April or May.
San Diego Gas & Electric owns 20 percent of the plant and receives one-fifth of SONGS' power when it's operational.
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