Article 21

The Government of any Member or Associate country of the Organisation which is not a Signatory to this Convention may accede thereto by notification addressed to the Secretary-General of the Organisation.

The Government of any other country which is not a Signatory to this Convention may accede thereto by notification addressed to the Secretary-General of the Organisation and with the unanimous assent of the Contracting Parties. Such accession shall take effect from the date of such assent.

Notwithstanding Article 7 a), where a Government which is not a Signatory to this Convention accedes to this Convention after 1 January 1999, it may provide under its legislation that the liability of an operator in respect of nuclear damage caused by any one nuclear incident may be limited, for a maximum period of five years from the date of the adoption of the Protocol of 12 February 2004 to amend this Convention, to a transitional amount of not less than 350 million euro in respect of a nuclear incident occurring within that period.