Established international legal framework for liability in nuclear accidents, ratified by 40 states as of 2014.
Key Facts
- Concluded
- 21 May 1963
- Entered into force
- 12 November 1977
- Amended by protocol
- 1997, in force since 4 October 2003
- Ratifying states (as of Feb 2014)
- 40 states
- Depository
- International Atomic Energy Agency
By the Numbers
Location
Cause → Event → Consequence
The rapid expansion of civilian nuclear power in the postwar decades created a need for internationally agreed rules on who bears financial responsibility when a nuclear accident causes cross-border or domestic damage, as no consistent legal standard existed among states.
On 21 May 1963, states concluded the Vienna Convention on Civil Liability for Nuclear Damage under the auspices of the International Atomic Energy Agency. The treaty set binding principles for channelling liability to nuclear operators and ensuring compensation for victims of nuclear incidents.
The convention entered into force in 1977 and was later strengthened by a 1997 protocol. As of 2014 it had 40 state parties, though several signatories including the United Kingdom had not ratified it, and Slovenia withdrew to join the parallel Paris Convention regime.
Political Outcome
Treaty adopted, entering into force 12 November 1977; amended by 1997 protocol effective 4 October 2003; 40 states party as of February 2014.