Major progress at Japan nuclear plant but not turning point-experts
By Raju Gopalakrishnan
TOKYO, March 21 (Reuters) - Japanese authorities have taken a major step in managing a nuclear crisis by connecting all six earthquake-damaged reactors to power supply, but it's too soon to say the crisis has reached a turning point, experts said on Monday.
Power has been connected but not switched on to crank up most coolers and pumps, which may have been badly damaged in the quake and tsunami that on March 11 triggered the world's worst nuclear accident since Chernobyl.
Only one pump has been activated.
The damaged reactors and their spent fuel pools at the Fukushima Daiichi nuclear power plant, 240 km (150 miles) north of Tokyo, urgently need cooling from air-conditioners and from water pumped in.
U.S. Energy Secretary Steven Chu, asked by CNN whether the worst of Japan's 10-day nuclear crisis was over, said: "Well, we believe so, but I don't want to make a blanket statement."
U.S. Nuclear Regulatory Commission Chairman Gregory Jaczko added that radiation levels at the plant appeared to be falling.
But nuclear experts in the United States and elsewhere were not quite as positive.
"I am not sure if the crisis has passed but it is definitely a step in the right direction," said Peter Hosemann, a professor at the University of California Berkeley's Nuclear Engineering Department. Continued...