 The preservation of documents of the public power as a purpose of the National Archives System (SINAR) was one of the conquests of the late 1970s.With the National Archives as the central organ, the system was composed of the bodies of the direct and indirect federal administration that had intermediate and permanent archiving activities.Following the suggestion of UNESCO, at the request of the general director of the National Archives, Celina Vargas do Amaral Peixoto, of a "pilot project of modernization of traditional type within an archives institution" and to guarantee a radical change, it was necessary to translation to a new headquarters; the identification of all the documents kept in the National Archives; the census of the fonds not collected and the training of the workers of the institution.