[en] Five incidents are reported. At the Sellafield reprocessing plant a small amount of liquor contaminated with plutonium and americium leaked through a ceiling. At Winfrith Atomic Energy Research Establishment clothing fibres contaminated with Cobalt 60 were found to have been discharged from the exhaust fumes of the site laundry tumble dryers. At Harwell (Atomic Energy Research Establishment) a hole was found at the tank farm which processes the sites radioactive liquid waste. A seepage of liquor contaminated with uranium and plutonium was found at a settling tank at Dounreay Nuclear Power Development Establishment. In none of these cases was there any contamination off site and no significant radiation dose was received by anyone as a result of the incident. In the other incident reported, an employee received a suspected intake of uranium which exceeded the annual limit, probably due to the incorrect following of the procedures associated with the use of protective clothing. Retraining has taken place. (U.K.)