This summary is about security, awareness on Nuclear power plant. Security is important topic in India and it is necessary to dissipate right information to all the public at large .in this I already briefly described how the security in NPP’s is maintained. NPPs industry improved the security and performance of reactors designs. However, a perfect security cannot be guaranteed. Potential sources of problems include human error and external events that have greater impact than anticipated. At first, we will safely focuses on main radiological releases from power plant activities and secondly, we will have to avoid misuse of radioactive material with non-state elements.