History
| 1956 | Nov. | The Preparatory Committee for the founding of a research reactor was organized with Prof. Hideki Yukawa as the first chair. |
|---|---|---|
| 1958 | Sep. | The Kansai Committee was formed. |
| 1960 | Dec. | Kumatori in Osaka was chosen to be the location. Head office was formed in Kyoto University Engineering Laboratory (now Institute of Advanced Energy). |
| 1961 | Sep. | Application for the foundation was filed. |
| 1962 | Mar. | The application was accepted. |
| 1963 | Apr. | The Research Reactor Institute was established as an Inter-University Research Institute and started as a Joint Research Institute. (Administration Office, Research Reactor, Workshop, Tracer Laboratory, Research Building, Waste Management Facilities and Guest House were completed. Further, six research divisions; Reactor Physics and Engineering, Reactor Facilities, Hot Laboratory Facilities, Scientific Instrument, Waste Management Facilities and Radiation Monitoring System were formed.) Prof. Kiichi Kimura became the first director. |
| 1964 | Mar. | The Neutron Generator Room was completed. |
| June. | The Research Reactor reached the critical stage. | |
| Aug. | A nominal maximum power of 1000kW was achieved. | |
| 1965 | Jan. | Joint research started. |
| 1968 | July. | The nominal maximum power was increased to 5000kW. |
| 1969 | Mar. | The Gamma-Ray Irradiation Laboratory was constructed. |
| Apr. | The Reactor Thermal Properties Management Division was established. | |
| 1974 | Mar. | KUCA (Kyoto University Critical Assembly) was constructed. |
| Aug. | KUCA reached the critical stage. | |
| 1975 | Apr. | The Reactor Utilization Center was opened. |
| 1976 | Apr. | The Radiation Physics Division and Reactor Nuclear Properties Division were established. |
| May. | The Radiation Oncology Research Laboratory was constructed. | |
| 1977 | Apr. | The Technical Staff Office was established. Nuclear Biology Division, Nuclear and Radiation Physics Division, Reactor Physics Division, Slow Neutron Physics Division, Radiochemistry Division, Reactor Chemistry Division and Reactor Chemistry and Engineering Division were further established. |
| 1978 | Oct. | The application for constructing HFR was approved. |
| 1982 | Feb. | The Environmental Radionuclide Laboratory was completed. |
| 1986 | Jan. | The Spent Nuclear Fuel Laboratory was completed. |
| 1995 | Apr. | The research divisions were entirely reorganized (16 research divisions were reformed into six research divisions: Nuclear Safety Research, Neutron Research, Nuclear Energy Science, Fuel Cycle and Environment, Applied Nuclear Science, and Radiation Life Science. 2 laboratories; Reactor Utilization Center and Radiation Oncology Laboratory were completed) |
| 2003 | Apr. | The research divisions were entirely reorganized (Six research divisions were reformed into three research divisions: Nuclear Engineering Science, Quantum Beam Material Science and Radiation Life Science.) |
| 2004 | Mar. | The Innovation Research Laboratory was completed |
| 2005 | Apr. | the Rediation Oncology Laboratory was reorganized Particle Radiation Oncology Research Center. |
| 2006 | Apr. | The Reactor Utilization Center was reoganized into Research Center for Safe Nuclear System. |
| 2008 | Apr. | Research Division of Advanced Neutron Therapy was established. |
| 2010 | Apr. | KUR low-enriched uranium core reached the first criticality. |
| 2010 | May. | KUR low-enriched uranium core achieved the rated power of 5000 kW. |
| 2018 | Apr. | Kyoto University Research Reactor Institute (KURRI) was renamed Institute for Integrated Radiation and Nuclear Science, Kyoto University (KURNS) |
| 2023 | Apr. | Second Research Building is completed. |
| 2024 | Jan. | First Research Building renovation work is completed. |
