Construction and commissioning of
          nuclear facilities up to an international level in any member  state of  the  International  Atomic Energy Agency (IAEA)require observation of specific nuclear safety criteria and standards and continuous legal supervision over  all  the activities  in  various  stages  of  site selection ,  design   of components  and  equipment,  construction,  commissioning, operation   and   decommissioning  of   the  aforementioned facilities.  Safety  assurance  of   NPPs  and  other   nuclear facilities,  minimizing their potential risks and also assurance of  the  existence  of  sufficient  protections  for  personnel, public  and  the environment ,  necessitate  establishment of a nuclear  regulatory  body  based  on international  criteria and regulations.