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| UK ABWR | |
|---|---|
| Name | UK ABWR |
| Type | Advanced Boiling Water Reactor |
| Designer | Hitachi-GE Nuclear Energy / Toshiba |
| Country | United Kingdom |
| Status | Proposed / Under construction |
| Reactors | 1–? per site |
| Electrical capacity | ~1,300 MW gross |
UK ABWR is the designation used in United Kingdom planning and procurement documents for the Advanced Boiling Water Reactor technology adapted from Japanese and international designs. It represents a Generation III+ boiling water reactor variant developed through partnerships involving Hitachi, General Electric, Toshiba, Mitsubishi Heavy Industries, and later GE Hitachi Nuclear Energy affiliates, intended for deployment at UK nuclear new-build sites such as Wylfa and Moorside. The program intersects with UK institutions including Department for Business, Energy and Industrial Strategy, Office for Nuclear Regulation, and commercial consortia such as Horizon Nuclear Power and NuGeneration.
The ABWR lineage originates from iterative reactor series built in Japan and exported concepts influenced by designs licensed through General Electric and pursued by industrial groups including Hitachi and Toshiba. In the UK context the UK ABWR proposal entered strategic discussion alongside competing designs like the Areva EPR and the Westinghouse AP1000, with procurement affected by companies such as EDF Energy and state actors including the Secretary of State for Business, Energy and Industrial Strategy. The design aims to meet UK energy policy objectives involving decarbonization commitments made at COP21 and frameworks set by the Climate Change Act 2008.
The UK ABWR is derived from the ABWRs built at Kashiwazaki-Kariwa Nuclear Power Plant and other Japanese sites, featuring a direct-cycle boiling water reactor core, internal recirculation pumps, and multiple reactor coolant isolation systems. Key technical specifications cited in vendor documents include gross electrical output around 1,300 MW, a core thermal power scale comparable to Kashiwazaki Units, and modular construction techniques advocated by proponents such as Hitachi and Toshiba. The UK adaptation evaluates compatibility with UK grid codes overseen by National Grid ESO and site seismic and coastal criteria influenced by precedents at Hinkley Point C and historical studies from Nuclear Installations Inspectorate predecessors.
Safety architecture draws on passive and active features developed within the ABWR family, including multiple redundant emergency core cooling systems, containment designs compatible with Office for Nuclear Regulation requirements, and severe accident mitigation measures informed by lessons from Fukushima Daiichi nuclear disaster. Regulatory engagement tracked interactions between vendors and UK regulators such as the Environment Agency and the Health and Safety Executive; Generic Design Assessment processes were used to examine design compliance under frameworks shaped by directives from the International Atomic Energy Agency and standards from American Society of Mechanical Engineers where applicable. Public inquiries and stakeholder consultation involved local authorities like Anglesey County Council and advocacy groups including Friends of the Earth and Greenpeace UK.
Proposals for UK ABWR deployment were linked to projects at proposed sites including Wylfa Newydd on Anglesey and Moorside near Sellafield. Commercial proponents such as Horizon Nuclear Power and later consortiums involving Hitachi and Korea Electric Power Corporation engaged with UK planning regimes, Crown Estate considerations, and investment partners like Korea Hydro & Nuclear Power. Construction strategies emphasized modular fabrication, lessons from construction of Kashiwazaki-Kariwa and Ohma Nuclear Power Plant, and workforce planning referencing skills initiatives allied to Nuclear Skills Strategy Group and training institutions such as National College for Nuclear.
Economic appraisal of the UK ABWR referenced levelized cost assumptions debated in policy circles including House of Commons energy select committees and analytical bodies like the UK Committee on Climate Change and National Audit Office. Financing models considered were akin to contracts seen with Hinkley Point C and proposals such as the regulated asset base and contracts for difference frameworks. International trade and industrial strategy implications involved bilateral ties with Japan–United Kingdom relations, export-credit support conversations with institutions comparable to Japan Bank for International Cooperation, and procurement scrutiny under rules influenced by World Trade Organization commitments.
Globally, ABWR variants have operational records at Japanese sites and have informed performance databases maintained by organizations such as the International Atomic Energy Agency and Nuclear Energy Agency. Performance metrics considered include capacity factors, outage durations, and steam-turbine interface data benchmarked against plants like Shika Nuclear Power Plant and other ABWR operational units. UK-specific operational expectations referenced grid integration case studies from National Grid ESO and lifecycle management practices evident at UK operators including EDF Energy and historic operators like British Energy.
Future trajectories for ABWR-based projects engage research and development institutions such as University of Manchester nuclear research groups, supply-chain firms including Rolls-Royce (civil nuclear initiatives), and innovation programs funded through entities like Innovate UK. Potential variants explore uprates, hybrid cooling solutions, and integration with hydrogen production projects aligned with UK Hydrogen Strategy ambitions, while policy evolution is shaped by parliamentary oversight in bodies like the House of Lords and international collaboration forums including the Nuclear Industry Association. Proposals remain contingent on market conditions, multinational partnerships, and regulatory clearances involving the Office for Nuclear Regulation.
Category:Nuclear power in the United Kingdom