A research reactor is a nuclear reactor used for scientific research, education, materials testing and radioisotope production, not for electricity generation. In legal practice this is a descriptive expression, not a statutory term. UK legislation (notably the Nuclear Installations Act 1965) defines “nuclear reactor” rather than “research reactor”. A research reactor therefore falls within the wider category of a nuclear installation and engages the same core regulatory and liability regimes.
In Great Britain (England & Wales and Scotland), construction, operation and decommissioning require a nuclear site licence from the Office for Nuclear Regulation (ONR). Operators also need environmental authorisations for radioactive substances (Environment Agency, Natural Resources Wales or the Scottish Environment Protection Agency, as applicable), must maintain an adequate safety case, comply with nuclear security requirements (including the Nuclear Industries Security Regulations 2003), meet safeguards obligations, and plan for radioactive waste, spent fuel and decommissioning. Civil nuclear liability under the Nuclear Installations Act/Paris regime may apply.
Usage is broadly consistent across the UK and Ireland. Northern Ireland and Ireland currently have no civil research reactors; in Northern Ireland comparable environmental controls apply via the Northern Ireland Environment Agency, and any reactor would be subject to UK nuclear site licensing. In Ireland, any...