MONTICELLO -- Federal investigators have signed off on emergency procedures at the nuclear plant here and have also given local officials good grades for procedures to deal with any incident that could affect surrounding communities. "There were no areas of corrective action," said Dwaine K. Warren, team leader of the Radiological Emergency Preparedness Program of the U.S. Federal Emergency Management Agency. On Jan. 10, the plant shut down for two weeks after a 35,000-pound control box fell about 6 inches onto a pipe carrying radioactive steam. The steam pipe didn't break or leak, but an investigation showed the design of the box was inadequate and that some of the welds holding it in place were undersized or of insufficient quality.