A study has been on the analysis of radioactivity release near "Kartini" reactor. There are several possibilities the release of radioactivities due to the reactor operation (normal or emergency condition) through air, water exhaust and direct radiation. The radiation and contamination monitoring in the environment have been done periodically. Regulation of radioactivity release is required as soon as possible with the contain of radioactive limitation, critical path, environmental factor and nuclear installation.Sukarman Amijoyo, M. Yazid & D. Indriyotomo
