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All issues Volume 10 (2024) EPJ Nuclear Sci. Technol., 10 (2024) 12 Full HTML
Open Access

Table 1.

Inventory of the basic functions of the dismantling system.

Function definition Symbol Function characteristics
IDentify is a function of knowledge, information, and data collection, management, and supplementing. All these information items are attached to an object, a function, a place.

  • Flow quality: information, data, and knowledge.

  • The resources (in): DIK, characterization techniques, information system.

  • The resources (out): indicators interpreted to define the work conditions and the result of the operation (DF).

  • The constraints (in): measurement uncertainties, contamination dynamics.

  • The constraints (out): contamination distribution mapping and operational conditions.
The TReaT function is an operation for waste radiological and physical resizing. This aspect concentrates on the problems related to safety. It must be shown that the process is managed as concerns criticality safety, containment, and radiation protection (holdup).

  • Flow quality: contaminated matrix or waste.

  • The resources (in): the means for cutting, for radiological characterization of the waste, the means for contamination containment.

  • The resources (out): the means for monitoring the work environment.

  • The constraints (in): the waste dimensions and masses, the radiological characteristics, the mass of fissile matter.

  • The constraints (out): the contamination dispersion, the dose rates.
The Waste packaging or CoNDitioning function groups the resizing and radiological operations on the waste in order to supply the finished object: the process product, i.e. the waste package.

  • Flow quality: resized waste, containers.

  • The resources (in): the containers.

  • The resources (out): the DIK associated with the waste: physical-chemical and radiological.

  • The constraints (in): the package dimensions, the radiological and physical-chemical cutoffs.

  • The constraints (out): the health safety quality of the waste package.
The TRanSport function includes all movements of objects within the facility or storage locations, and on the public road network. [30]

  • Flow quality: waste packages.

  • The resources (in): means of handling.

  • The resources (out): definition of the transport means and modes.

  • The constraints (in): Hazardous goods road transport authorisation Accord pour le transport des marchandises Dangereuses par la Route (classe 7). [30]

  • The constraints (out): transportation of hazardous material.
The Decommission DCL function is the operation guaranteeing that the treated facility is in conformity with the rules set by the French Nuclear Safety Authority (ASN).

  • Flow quality: matter or civil engineering structure.

  • The resources (in): the means for low-level mapping, a monitoring station at the site exit.

  • The resources (out): a decommissioned building.

  • The constraints (in): 0 Bq [10] or 300 Gy/year.

  • The constraints (out): none.
The ENT, or Storage function consists in keeping the waste in safe, accessible conditions.

  • Flow quality: waste packages.

  • The resources (in): the storage buildings and locations.

  • The resources (out): storage plans.

  • The constraints (in): the limits set for each facility.

  • The constraints (out): access to storage zones.

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