Multilateral agreements in nuclear energy

IV. Liability and compensation for nuclear damage

Brussels Convention Supplementary to the Paris Convention on Third Party Liability in the Field of Nuclear Energy (Brussels Supplementary Convention or BSC)

The Brussels Supplementary Convention establishes a scheme to provide compensation supplementary to that required by the Paris Convention. The BSC is open only to contracting parties to the Paris Convention.

Adopted: 31 January 1963

Opened for signature: 31 January 1963

Entered into force: 4 December 1974, along with its 1964 Additional Protocol

Parties: 131 (see table below)

More information on the Brussels Supplementary Convention, including the text, is available here.

The current status of ratificiations or accessions to the Brussels Supplementary Convention is available here.

The following is a sampling of the articles related to the BSC that have been published in the Nuclear Law Bulletin:

Parties to the Brussels Supplementary Convention on Third Party Liability in the Field of Nuclear Energy

Belgium* Germany* Slovenia* United Kingdom*
Denmark Italy Spain*  
Finland* Netherlands* Sweden*  
France* Norway Switzerland*1  

* Country with at least one nuclear power plant in operation.


  1. Switzerland has signed the 1963 Brussels Supplementary Convention (BSC), the 1964 Additional Protocol to amend the BSC and the 1982 and 2004 Protocols to amend the BSC. On 11 March 2009 Switzerland deposited its instrument of ratification of the 1963 BSC as amended by the 1964, 1982 and 2004 amending Protocols. As this ratification is effective only with respect to the 1963 BSC as amended by all 3 Protocols, entry into force for Switzerland of the Brussels Supplementary Convention as so amended will only take place once the 2004 Protocol to amend the BSC has itself entered into force.
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Last reviewed: 9 February 2017