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Atomic energy meaning

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What does Atomic energy mean?
Atomic energy (more commonly ‘nuclear energy’) in legal practice refers to energy from nuclear reactions—principally fission (splitting heavy atomic nuclei such as uranium or plutonium) and, prospectively, fusion (joining light nuclei at high temperatures). The expression appears in older UK statutes (for example, the Atomic Energy Authority Acts); modern legislation and regulators use ‘nuclear’. It is a descriptive term; where a statute defines it, that definition governs. Its significance is that activities involving atomic/nuclear energy engage specialist regimes on: nuclear site licensing and reactor operation (Office for Nuclear Regulation), nuclear safeguards and security, transport of radioactive material, environmental permitting of radioactive substances, radioactive waste management and decommissioning, and civil liability/insurance for nuclear damage (e.g., Nuclear Installations Act 1965). Usage is broadly consistent across England & Wales, Scotland and Northern Ireland within a largely UK-wide framework, with environmental regulation delivered by the relevant agencies (EA, SEPA, NRW and NIEA). In Ireland, there is no civil nuclear power programme and authorisation of nuclear fission electricity generation is not permitted under Irish legislation; regulation focuses on radiological protection, ionising radiation sources and emergency preparedness. Practically, lawyers encounter the term in nuclear regulation, project development, contracts, export controls and compliance.
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NEWS
UK Public Law update: Brexit (CJEU reference, REUL SIs, SPS/ETS), ECHR and NI legacy, JR/PSED, procurement under PA 2023, FOI/EIR, AI fraud, devolution—25 September 2025

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NEWS
Local government and public services: key cases, procurement reforms, council tax reduction scheme unlawful, SEND/FE changes, planning and CPO updates, DHSC-NHS joint executive team, Welsh reforms

In this issue: Social care Social housing Local government finance Public procurement Governance Education Healthcare Social care Children’s social care Planning Daily and weekly news alerts New and updated content Social care Social care Administrative Court requests Court of Justice preliminary ruling under UK-EU Withdrawal Agreement in universal credit and domestic violence case (R (BZ) v SSWP) In R (BZ) v Secretary of State for Work and Pensions, the court’s focus was whether a reference to the Court of Justice for a preliminary ruling should be made under Article 158(1) of the Agreement on the withdrawal of the United Kingdom of Great Britain and Northern Ireland from the European Union and the European Atomic Energy Community (WA). At paragraph [104], Mr Justice Chamberlain explained that power to seek the Court of Justice’s view on the meaning of Article 17(2) exists only where resolving that point is necessary to deliver...

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View the related Practice Notes about Atomic energy

PRACTICE NOTES
1986 Convention on Assistance in Nuclear or Radiological Emergencies: Key Provisions, IAEA Role, Immunities, Liability and UK Implementation

Issue Details Name: 1986 Convention on Assistance in the Case of a Nuclear Accident or Radiological Emergency (Convention on Assistance) Parties: 131 (including 4 non–State parties, 57 signatories) Place: Vienna Adopted: 26 September 1986 Entry into force: 26 February 1987 Subject: International assistance and support in the event of a nuclear accident or radiological emergency What is the purpose of the Convention on Assistance? To allow rapid assistance and encourage international co‑operation when confronted with a nuclear or radiological emergency. The Convention is based on the International Atomic Energy Agency guidelines titled Guidelines for Mutual Emergency Assistance Arrangements in Connection with a Nuclear Accident or Radiological Emergency (1984). It sets a framework through which help can be requested and provided. What are the key elements of the Convention on Assistance? Key articles Article 2: A State Party may request assistance either: directly from another State Party; or through the IAEA. ...

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PRACTICE NOTES
Vienna Convention on Early Notification of Nuclear Accidents 1986: obligations, key provisions, INES, and UK implementation

Issue Details Convention on Early Notification of a Nuclear Accident Parties: 136 (including 4 non-State parties) Location: Vienna Adopted: 26 September 1986 Came into force: 27 October 1986 Subject: Requirement for prompt notification of nuclear accident What is the background to the 1986 Vienna Convention? The Convention on Early Notification of a Nuclear Accident creates a system to alert other States about nuclear events with potential transboundary releases of radiological safety significance. Triggered by the USSR’s failure to share information promptly after Chernobyl, it compels States to provide the accident’s timing, location, details of radioactive releases, and other data vital for assessing the situation. Notices must be sent to potentially affected States directly or via the International Atomic Energy Agency (IAEA), and to the IAEA itself. Reporting is obligatory for nuclear accidents linked to the facilities and activities identified in Article 1, while Article 3 allows States to notify other incidents. China, France, Russia, the United Kingdom (UK)...

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PRACTICE NOTES
EU/Euratom nuclear regulatory framework: safeguards, safety, licensing, radiation protection, environmental impact assessment, radioactive waste, decommissioning, fuel supply and environmental crime—practitioner overview

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