The electronic book of abstract of "International Conference on Nuclear Technology, Radiation Safety and Advanced Technological Researches (ICNRA 2021)" supported by Global Affairs Canada and CRDF Global and organized by of Energy Institute graduate Dr. Turkan Dogan and her supervisor Prof. Dr. Nilgun Baydogan between 10-11 December 2021 was published by ITU library. Summaries of 55 papers, more than half of which were sent by international participants, were included in this e-book.