NEW : Tokyo Electric may wrap nuclear plant buildings in sheeting to curb radiation . The first try to plug a leak where radioactive water is entering the sea has n't succeeded . Tokyo Electric 's chairman holds talks in U.S. about the plant , which the Tokyo firm partly designed . Japanese minister : `` The nuclear crisis is expected to go on for a long time ''
NEW : Tokyo Electric may wrap nuclear plant buildings in sheeting to curb radiation . The 2nd try to plug a leak where radioactive water is entering the sea has n't succeeded . GE 's chairman holds talks in Tokyo about the plant , which the U.S. firm partly designed . Japanese minister : `` The nuclear crisis is expected to go on for a long time ''