The state run Nuclear Power Corporation of India (NPCIL) will file fresh terms of reference (ToR) within a month with the union ministry of environment and forest (MoEF) to carry out environment impact assessment (EIA) and prepare the environment management plan for the proposed 6,000 MW power plant at Kovvada in Andhra Pradesh. This is necessitated after NPCIL and US firm Westinghouse on June 7 have agreed to begin engineering and site design work immediately for six AP1000 reactors to be installed at Kovvada.