Link to the study - European Parliament - Europa

Nuclear Decommissioning: Management of Costs and Risks
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Description of the plant premises,
Environmental impact study,
Operating rules for monitoring and maintenance.
Based on those documents being delivered by the operator, ASN determines whether the technical
scenario, the organisation and methods adopted by the operator are sufficient to guarantee the
safety of the facility in the dismantling process and workers radiation protection. ASN can set
conditions in the license or add recommendations in the form of 'technical prescriptions'.
Safety license during decommissioning
ASN summarizes all the requirements in the decree for dismantling and in the technical prescript. The
licensing documents have to exactly reflect the current state of the facility and must be evolved along
the whole decommissioning phase. The evolutions can be done by the operator, who has then to
submit them to ASN and ask for a license amendment (according to the Article 26 or 31 TSN
law - TSN 2006) or ask for an internal authorization (according to the Article 27 TSN law - TSN 2006).
The evolutions are indispensable before starting every significant step stated in the decree and
additionally every 10 years.
EDF’s internal authorisation system
EDF has established an own internal authorisation system that is based upon an independent
commission on the national level and managed by the Engineering Centre in charge of all the studies
for Decommissioning (CIDEN). The commission consists of EDF experts as well as non-EDF experts
that are not involved in the plants’ operation. The validation process of the internal authorisation
system was proposed by ASN in April 2002, was subjected to a testing period of 18 months and finally
approved in February 2004. The organisation is being upgraded according to the ASN requirements.
Assurance of decommissioning costs
To cover the decommissioning costs an internal company fund is required. The operator is
responsible for all decommissioning costs so all the decisions are made under its own competence
and to be discussed with the regulator. The regulatory body requires that the funds for
decommissioning are both sufficient and available when needed.
3.2.6. Cost estimates
The total costs of the immediate decommissioning programme and the long-term changes
in the estimations
The estimations for the decommissioning costs were firstly calculated within the overall
decommissioning projects for all the 9 nuclear power plants to be decommissioned (first-generation
fleet) plus three other additional facilities shut down, under construction or still being operated -
St. Laurent silos for storage of low level radioactive wastes (LLW), the fuel storage workshop (APEC)
and the activated waste conditioning and storage facility (ICEDA).
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