Report on research and development work 1983 of the Institut fuer Nukleare Entsorgungstechnik

The Institute for Nuclear Waste Processing undertook research and development work on the following key topics: 1) Inactive operation of the vitrification plant VA-3 to the point of transferal of the ceramic smelting apparatus K-3 together with other process components to the project PAMELA; 2) Active operational start-up of the facility for wet ashing Pu-waste (ALONA) in Mol, including the recovery of plutonium; 3) Study of properties of vitrified products of this technical process; 4) Laboratory trials on the separation of actinides and fission products from medium-level radioactive waste solutions; 5) Solidification of alpha-containing concentrates in a ceramic matrix, characterization of the products and process developmental work; 6) Study of the release of radionuclides from medium-level radioactive waste solutions by leaching and mechanical or thermal stress; 7) Development of stable containers for the final storage of highly radioactive vitrified products in salt; 8) Studies on analytical safety assurance for final storage in geological formations. A list of publications and lectures given by members of the Institute during 1983 is appended to the report. (orig./RB)