41 Practical training demonstration, including atomic electric power stations and nuclear reactors design, construction, exploitation, service, repair and removal from service; arranging and conducting congresses, including in the field of atomic electric power stations and nuclear reactors design, construction, exploitation, service, repair and removal from service; arranging and conducting of conferences, including in the field of atomic electric power stations and nuclear reactors design, construction, exploitation, service, repair and removal from service; arranging and conducting of seminars, including in the field of atomic electric power stations and nuclear reactors design, construction, exploitation, service, repair and removal from service; arranging and conducting of symposiums, including in the field of atomic electric power stations and nuclear reactors design, construction, exploitation, service, repair and removal from service