NEW DELHI - A water leak forced the shutdown of a nuclear power plant in the western Indian state of Gujarat on Friday, but no nuclear material was in danger of being released at the Kakrapar Atomic Power Station, an official said. "No worker has been exposed to radiation and no radioactivity was reported outside the plant," said KS Pradeep Kumar, associate director at the Bhabha Atomic Research Centre (BARC) that oversees nuclear safety in India. He said employees remained sequestered for hours, a standard operating procedure, and team of scientists had started safety checks.