Safety Options Report - Operating Part (DoS-Expl)

The Safety Options Report - Operating Part [DOS-Expl] presents the functions performed by the Cigeo repository during the operating phase, the main technical options and safety options planned to prevent the various internal and external risks and a preliminary estimate of the impact on human health and the environment during normal operating as well as in the event of incident or accident situations. To achieve these objectives, the Safety Options Report - Operating Part contains four volumes, essentially covering the following points: - in Volume I: the safety principles, approach and management applied at Cigeo, mainly including the safety functions and the relevant regulatory texts; - in Volume II: input data relative to the waste packages used as the basis for facility design and operating; the key characteristics of the site, demonstrating its suitability for the location of the facilities and used as the basis for designing the facilities; the main technical options relating to the structures and equipment to ensure that Cigeo is operational; the main options chosen in relation to operating, mainly including management of waste packages, organisational and human factors and effluents; - in Volume III: a summary description of how waste packages will be transported from their arrival at the facility to their emplacement in the disposal cells; the inventory of internal and external risks, in application of the principle of defence in depth and related to the technical options selected and the bounding scenarios used for facility design; a preliminary estimate of the impact on human health and the environment for each bounding scenario used; - in Volume IV: a presentation of the options and operations envisaged for the closure of Cigeo, together with a preliminary inventory of the related risks. Given that the repository is expected to operate for around a hundred years, and that it will be developed in stages throughout that period, certain technical solutions which, at this stage, seem to offer potential improvements are included in Volume II. Depending on how much progress has been made on the demonstration and the results of studies planned during the basic engineering design phase, certain technical solutions may be incorporated in the report submitted in support of the licence application or, if necessary, following issue of the licence and according to stages that will be specified in the licence application.