Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

Nuclear decommissioning definition

What does Nuclear decommissioning mean? Nuclear decommissioning describes the legal and regulatory process for planning, defuelling, dismantling, decontaminating and remediating a nuclear site that has ceased operation, managing radioactive waste and spent fuel, and restoring the land either to an unrestricted, delicensed condition or to a state suitable for alternative use. The term is descriptive rather than a single statutory definition. In Great Britain it is addressed by the Nuclear Installations Act 1965, nuclear site licence conditions (notably LC35) and Office for Nuclear Regulation (ONR) guidance, with environmental permitting by the Environment Agency, Natural Resources Wales and SEPA. The Nuclear Decommissioning Authority (Energy...

Health and safety in nuclear decommissioning: legal framework, regulators' interfaces, emergency planning and post-Brexit/assimilated law developments

Published by a LexisNexis Energy expert

Practice notes

What is the impact of Brexit on the UK nuclear sector?

As of 31 January 2020 (exit day), the UK ceased to be an EU Member State. From that date, a transition/implementation phase applied, during which the EU continued, for many purposes, to treat the UK as if it remained a Member State. Leaving the EU also entailed withdrawal from the Euratom Community. The transition ended at 11 pm (GMT) on 31 December 2020—known in UK law as ‘IP completion day’. At that point, key transitional measures expired and notable shifts started to apply across the UK’s legal framework. The UK’s exit from the EU likewise meant departure from Euratom. Any changes pertinent to this content are outlined below. Following IP completion day, the European Union (Withdrawal) Act 2018 (EU(W)A 2018) introduced a new category of domestic law—‘retained EU law’ (REUL)—comprising EU-derived rights and legislation preserved in the UK after Brexit. On 29 June 2023, the Retained EU Law (Revocation and Reform) Act 2023 (REUL(RR)A 2023) received Royal Assent...

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Ian Truman

Burges Salmon

Ian advises sponsors, developers, technology vendors, operators, insurers, Government departments, funders and contractors on all aspects of international and UK nuclear law, nuclear new build and other nuclear projects.Ian is the former Deputy General Counsel of the Hinkley Point C nuclear project, a member of the Nuclear Industry Association, the Nuclear Institute, the International Nuclear Law Association and the World Nuclear Association and a joint author of the Burges Salmon Guide to Nuclear Law....

Web page updated on 21/05/2026

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