When a facility has reached the end of its useful life, action has to be taken to ensure safe shutdown and allow the removal of regulatory controls. Some countries have put in place regulatory infrastructures and have developed programmes to manage the associated decommissioning and remediation activities. Other countries are at the stage of assessing what is involved in terminating such practices. This publication, arising from a conference held in Berlin, covers: the overall magnitude of the problem; regulatory approaches and safety strategies; status and development of decommissioning technologies; planning and implementation; funding approaches and strategies; consideration of social issues; and criteria for the removal of regulatory controls. A CD-ROM of contributed papers is included.