About 17,500 people gathered Sunday for two rallies held in Tokyo against nuclear power plants amid the prolonged crisis at the Fukushima Daiichi Nuclear Power Station...In Shiba Park in Minato Ward, about 2,500 people gathered...to demand that Chubu Electric Power Co. halt operations at its Hamaoka nuclear power plant in Shizuoka Prefecture, saying the plant located ''right above'' the assumed epicenter of a predicted major quake may cause another nuclear crisis. ''We've learned that nuclear plants cannot be controlled by human power,'' said photographer Gentaro Todaka...''We hope to halt the Hamaoka plant which is said to be the most dangerous, and the campaign to halt nuclear plants will spread elsewhere.'' In the wake of...[the] nuclear crisis...Chubu Electric has put off rebooting the Hamaoka's No. 3 reactor that had been slated for early April after regular servicing...