[en] The operation and use of the reactor during 1982-3 is reported in detail. The research programme covers a wide range of projects in reactor and neutron physics and in radiochemistry and the application of radioisotopes. As well as university departments the reactor facilities are used by industrial firms. The activation analysis service is used mostly by industry. The gamma spectrometer used in this service needs replacing. The teaching and training programme has expanded to cater not only for undergraduate and postgraduate students but for in-service training of staff from the nuclear industry. The reactor use has been analysed and is tabulated. Reactor operation and site safety arrangements are reviewed including a listing of waste discharge and holdings of radioactive materials. (U.K.)