Declaration of changes to the basic technical characteristics
Article 5
1. Significant changes in the information referred to in Article 4(2) and (3) shall be declared to the Commission and the relevant Member State whenever the notified design of the installation is modified, or within a different agreed timeframe. 2. Significant changes in the basic technical characteristics regarding the purpose, type or layout of the installation and in particular changes affecting the access routes to areas where nuclear materials are used or stored shall be declared as soon as the decision on their implementation is taken, and not later than 20 days before the work on the modification is scheduled to commence. Additional requirements regarding changes in the basic technical characteristics to be declared in advance may be specified in the particular safeguard provisions referred to in Article 8. 3. Changes in the basic technical characteristics for which advance declaration is not required under paragraph 2 shall be declared within 30 days after the modification is complete. Decommissioning plans and timeframes for their implementation shall be declared using the dedicated fields of the relevant questionnaire in Annex I when they have been adopted or decided, respectively. Any update shall be declared whenever the information provided in the questionnaire changes. 4. Changes in the basic technical characteristics resulting from decommissioning activities shall be declared monthly, by the end of the following month, but only if the information in the relevant questionnaire in Annex I has changed during the month.