The paper reports the study on incineration of the absolute filter contaminated with radioisotopes. Large amount of waste absolute filter are produced in the field of nuclear industry every year. But their storage is very expensive. In this study it was treated by mixed incineration. This would solve the problem of adherence of fibre glass to the hearth

which spoils the equipment. at high temperature of combustion it would also reduce the storage cost. The experimental results show that there was about 96.8% reduction in volume of absolute filter and about 58.2% reduction in weight. The radioisotopes were enclosed into glass. Hence

such incineration method would be of significance for safe storage and economical management.