The Member States 25 March 1957, Consolidated version of the Treaty establishing the European Atomic Energy CommunityTITLE II - Provisions for the encouragement of progress in the field of nuclear energyCHAPTER 7 - SAFEGUARDSArticle 82

Article 81 The Commission may send inspectors into the territories of Member States. Before sending an inspector on his first assignment in the territory of a Member State, the Commission shall consult the State concerned; such consultation shall suffice to cover all future assignments of this inspector.