TECHNOLOGICAL DEVELOPMENT OF THE 101-HWRR DURING THE LAST 30 YEARS

The paper describes technological development and application survey of the101-HWRR during the last 30 years. In June of 1958, the HWRR went critical. Since September of 1958, it hadbeen operated at power level of 3-7 MW. During the years of 1958-1978, allthe systems related to the reactor were improved in varying degrees for thereactor to be operated more safely and used more fully. After 1967, the HWRRwas operated at the power of 10 MW. During, the years of 1978-1982, thereactor was reconstructed. The core was changed and the heavy water coolingsystem was improved. The monitoring systems of thermal hydraulic parameter andradiation dose were renewed, and a computer real-time monitoring was introduced.After the reconstruction, the maximum power of the reactor was up to 15 MW,the maximum thermal neutron flux density was up to 2.8×10~(14) n/cm~2·s and thenumber of the vertical experimental channel was increased by 2.6 times. The main applications of the HWRR are: radio-isotopes production;experiment on neutron scattering; reactor neutron activation analysis; materialsmodification by irradiating; research on irradiation of reactor material and fuel;training of the personnel.