The DAC file (Demande d'Autorisation de Création) is the principal document supporting the application for the licensing of ITER. It includes the Preliminary Safety Report (RPrS - Rapport Préliminaire de Sûreté) and the "Impact Study". On January 2008, the DAC was officially submitted to the French Nuclear Authority (ASN).

To cope with the requests and recommendations given by the ASN to the earlier ITER Safety Options Report (DOS), CEA had taken commitments dealing with complementary information to be integrated into the RPrS. The necessary work had been implemented by EFDA (European Fusion Development Agreement) and, since its existence, by F4E (Fusion for Energy), in the EISS activities (European ITER Site Study) and in the European Safety Technology Work Programs. The executants of the work have been CEA-AIF (Commissariat à l'Énergie Atomique - Agence ITER France), several European Associations (CEA, CIEMAT, ENEA, FZK and VR/Studsvik) and industry. All of them have been working in full cooperation with ITER Organization (IO). In addition some long term R&D tasks, which will have to be performed in parallel to ITER construction, have been defined and their implementation started. Typical examples are dust management (production, mobilization, diagnostic and removal), combined hydrogen/dust explosion models development and validation, demonstration of the feasibility of prevention/mitigation of in-vessel hydrogen/dust