In the annual report No. 35 (fiscal 1992) are described the activities of health physics in Tokai Research Establishment, Takasaki Radiation Chemistry Research Establishment, Oarai Research Establishment, Mutsu Establishment and Nuclear Ship Mutsu. In all the establishments, radiation monitoring in nuclear facilities, individual monitoring, environmental monitoring and maintenance of monitoring instruments were carried out as in the previous years. There were no occupational exposure exceeding the dose equivalent limit and no release of radioactive gaseous and liquid wastes beyond the release limits specified according to the regulations. In the environment there were detected no abnormal radioactivity due to the facilities. (author).