ROCKVILLE, Md. (AP) - The nuclear crisis is Japan, while severe, appears to be stabilizing and does not warrant any immediate changes in U.S. nuclear plants, a top U.S. nuclear official said Monday.
The Nuclear Regulatory Commission's executive director for operations, Bill Borchardt, said officials have "a high degree of confidence" that operations at the 104 nuclear reactors in 31 states are safe. He said inspectors at each of the plants have redoubled efforts to guard against any safety breaches.
Borchardt gave NRC commissioners a detailed look at the Fukushima Dai-ichi plan, damaged in the March 11 earthquake and tsunami, and the U.S. response thus far.
Borchardt told commissioners that Units 1, 2 and 3 at the crippled Fukushima plant have some core damage, but that containment for those three reactors has not been breached.
"I would say optimistically that things appear to be on the verge of stabilizing," he said.
The Tokyo Electric Power Co., which operates the troubled plant, has been able to bring offsite power onto the site from a nearby transmission line, Borchardt said, the first sign of progress at the plant in recent days. Water is being injected into the reactor vessels in Units 1, 2 and 3, and containment in all three units appears to be functional, he said.
The five-member commission was reviewing the Japanese crisis - it is the worst nuclear disaster in a quarter-century - and was set to approve a 90-day safety review of operations at the U.S. nuclear fleet to comply with a call last week by President Barack Obama.
NRC Chairman Gregory Jaczko said his agency has a responsibility to the American people to undertake "a systematic and methodical review of the safety of our own domestic nuclear facilities," in light of the Japanese disaster.
The nuclear plant's cooling systems were wrecked by the massive earthquake and tsunami that devastated northeastern Japan on March 11. Since then, conditions at the plant have been volatile; a plume of smoke rose from two reactor units Monday, prompting workers to evacuate.
As work at the plant continues, U.S. officials will look to see whether information from Japan can be applied in the United States to ensure U. S. reactors remain safe, Jaczko said.
Borchardt replied that officials "asked ourselves the question every single day, "Should we take a regulatory action based upon the latest information?"' Each time, he said, the answer was no.
"I'm 100 percent confident in the review that we've done and we continue to do every single day that we have a sufficient basis to ... conclude that the U.S. plants continue to operate safely," he said.