I.- Access to ionising radiation sources or batches of category A, B or C radioactive sources and their transport, or access to information relating to the means or measures implemented to protect them against malicious acts, are authorised by the person responsible for the nuclear activity.
The authorisation issued to a person for this purpose is personal and in writing.
Persons not in possession of this authorisation may have access to the ionising radiation sources or batches of radioactive sources mentioned in the first paragraph and escort them if they are accompanied at all times by a person in possession of the authorisation mentioned in the first paragraph.
II – In this section, escorting means carrying out or participating in the change of location of an ionising radiation source, including without a vehicle or within the same establishment.
The change of location includes the operations of loading and unloading, surveillance and transfer from the moment the source is handed over to the courier at the point of departure until it is handed over to the recipient.