We are in a constant state of alteration and modification of the world's cultural heritage, which, as we know, is the greatest legacy of our ancestors. In Safety Plan libraries: the documentary heritage protection general safety systems and elements that must be prot egidos in libraries and bibliographic heritage (both hardware and electronic) are examined. The collections no assurance can be overcome by implementing tailored to the needs of each institution programs. To do this a model plan that institutions should undertake to implement and that can be adjusted and used by other cultural institutions, such as archives, museums and documentation centers is presented.