Nuclear Power Corporation of India (NPCIL) has submitted its internal safety assessment report, which was made in the light of the Japan nuclear crisis, to the Department of Atomic Energy. As part of efforts to revisit the safety of Indian nuclear power plants, four task-forces were set up to assess all aspects of safety in all reactors which are operating as well as under construction and the proposed ones, Financial Director of NPCIL, Mr Jagdeep Ghai, said. The report was submitted to DAE on Friday, Mr Ghai said.