1970 - An expert mission of the International Atomic Energy Agency (IAEA) recommended and favourably advised the project of establishing the Institute from Pitesti, in order to ensure the technological and scientific support for the development of the nuclear power programme in Romania.
1971 - It is founded the Institute for Nuclear Technologies (ITN) as a strategic unit having as field of activity the scientific research, design, technological engineering and technical responsibility for the development of the nuclear energy in Romania.
1977 - The institute's name was changed to the Institute for Nuclear Power Reactors (IRNE). There were installed and commissioned the research laboratories at the new headquarters, located in Arges County, Colibasi - Mioveni, at 130 km N-W from Bucharest.
1978 - Quality Assurance Requirements were settled for the reactor operation and it was approved by the Nuclear Authority, the first Quality Assurance Manual (MAC). Today, the Quality Management System is extended to all activities which take place within the institute: research, design, manufacturing nuclear equipment, treatment and transport of radioactive waste, exploitation of nuclear facilities within the institute.
1979 - At November 18: the first criticality was attained at the TRIGA Materials Testing Reactor, built within the institute.
1980 - Commissioning the Pilot-scale plant for the fabrication of CANDU-type fuel elements.
1983 - Commissioning the Post-Irradiation Examination Laboratory (LEPI).
1984 - Commissioning the Endurance testing rig of the fuel bundles within the Out of Pile Testing department (TAR) and the Radioactive Waste Treatment Plant (STDR).
1985 - Starting the fabrication of the CANDU fuel bundles for the future Cernavoda Nuclear Power Plant, in the Unit for Fuel Elements Production (SPEC) within the institute, later known as the Nuclear Fuel Factory (FCN).
1984 - 1986 - During this period it took place the transfer of the manufacturing technology for the UO2 sintered powder, developed within the institute, to the "R" Factory - Feldioara, together with the design data for the execution of the production line at an industrial level.
1989 - Along with the arrival of the F/M Heads #4 and #5 intended for Cernavoda NPP-Unit 2, the F/M head test stand was commissioned.
1990 - Incorporated in the National Authority for Electricity (RENEL), the Institute for Nuclear Power Reactors (IRNE) became the Institute for Nuclear Research (ICN).
1992 - The Department for Fuel Elements Production separated from the Institute and become a distinct unit within RENEL, under the name of Nuclear Fuel Factory (FCN).
1992 - It began the fuel conversion process at the TRIGA reactor.
1994 - The Institute experts attended the commissioning of Cernavoda NPP - Unit 1.
1995 - Commissioning at the Cernavoda NPP-Unit 1 of the Failed Fuel Location System (SLCD), equipment entirely designed and manufactured by the Institute.
1996 - On April 16, the first criticality was attained at Cernavoda NPP-Unit 1, directly involving ICN experts.
1998 - The Institute passed under the jurisdiction of the Romanian Authority for Nuclear Activities (RAAN) and became the Subsidiary for Nuclear Research(SCN).
1999 - Returning the spent fuel from the TRIGA research reactor to the home country (USA).
2002 - It was completed the experimental model for advanced nuclear fuel bundle - SEU 43.
2003-2005 - The functional test ware performed for the most complex robotic equipment used at Cernavoda NPP- Unit 2 - Fuelling Machine (MID). Following the assessment, the qualification of th technologies and equipment owned by Institute, testing the personnel by a team of Canadian experts, for the first time in Romania and Europe, ICN Pitesti successfully completed the testing and delivery of two Fuelling Machine Heads (F/M) at Cernavoda NPP - Unit 2.
2003 - On ICN - FCN site, with the joint effort of the Nuclear Agency and ICN -Pitesti, it was founded the Nuclear Agency & Radioactive Waste.
2004 - 25th anniversary of the commissioning of the TRIGA reactor.
2006 - Completion of the TRIGA-SSR Reactor conversion started in 1992, from HEU fuel (Highly Enrich Uranium) to LEU fuel (Low Enriched Uranium).
2007 - On May 7 the first criticality was attained at Cernavoda NPP - Unit 2, to which the Institute's specialists brought their contribution through the technical and scientific assistance, the products and services developed for the nuclear power.
2008 - Returning the second part of the HEU spent fuel from ICN Pitesti - TRIGA research reactor to the USA.
2008 - Launching the first edition of the "Annual International Conference on Sustainable Development through Nuclear Research and Education" - Nuclear 2008.
2006-2010 - Actively participated in the conceptual development of the European Lead Cooled Fast Reactor, ELSY (FP7-EURATOM) project.
2010-2013 - ICN Pitesti was partner in the LEADER (FP7 -EURATOM) project aimed to develop the conceptual design for ALFRED (100 MWe) demonstrator.
February 2011 - Romania's Government approves the MECMA Memorandum for hosting ALFRED following debates with AN&DR and the main stakeholders; it was approved the availability regarding the location of the ALFRED demonstrator in Romania.
May 2011 - Celebrating the institute's 40 years of activity on which occasion it was launched the publication "Journal of Nuclear Research and Development", published by the institute.
November 2011 - initiating the MoU (Memorandum of Understanding between Ansaldo Nucleare, ENEA and ICN) for the construction of the ALFRED consortium, considering Romania as a reference location.
February 2012 - MoU signed by the 3 parties: Ansaldo, ENEA - Italia and ICN Pitesti.
May 2012 - ICN's membership to ESNII (European Sustainable Nuclear Industrial Initiative).
2013 - Starting 1st October, the Institute for Nuclear Research Pitesti (ICN) became a subsidiary of the State Owned Company "Technologies for Nuclear Energy (RATEN)", established under Emergency Ordinance no. 54 from 29th May 2013.
18 December 2013 - It was signed the Memorandum of Cooperation between the partners from ANSALDO Nucleare and ENEA Italy and the Institute for Nuclear Research Pitesti, RATEN-ICN, Romania, for implementing the construction of the ALFRED project, establishing the FALCON Consortium (Fostering Alfred Consortium).