HARPERS main objective is to establish and clarify the benefits and added value of more aligned and harmonised regulations, practices and standards in decommissioning and radioactive waste management, including possibilities for shared processing, storage and disposal facilities between Member States (MS). The project aims to reinforce the activities of the European Joint Programme EURAD, PREDIS and SHARE projects. The project also connects with the wider European Community through, e.g., SNETP, NEA, IGDTP, IAEA, ENSREG, ERDO, DigiDecom, and encourages interaction between different national programmes. The project will identify the relevant regulatory differences across MS, assess the rationale for the identified regulatory differences and establish the potential for their harmonisation relative to cross border services /facilities for RWM, moving to a circular economy in RWM and implementation of advanced technologies in RWM. Obstacles and issues preventing the implementation of a more common regulatory framework will be identified. The project will evaluate the Strengths, Weaknesses, Opportunities and Threats with respect to harmonisation of the identified regulatory differences and produce reports on harmonising regulatory systems in Europe.