The International Atomic Energy Agency (IAEA) in Vienna has launched an initiative for the development of a documentation on monitoring of high-level waste repositories. The intention is not to provide a new Specific Safety Guide (SSG) but to provide a Technical Document that discusses how monitoring may be used for decision making processes during the evolution of a repository. Last December (17.-21.12.2017), a first technical meeting of representatives of the member states was held at the IAEA headquarters in Vienna. During this meeting the contents and the structure of the technical document was discussed. Germany was represented by DBE TECHNOLOGY GmbH, which as a member of the core group, shares the responsibility for the development of a first draft of the planned document.