Heysham 2

Heysham 2
Name	Heysham 2 Nuclear Power Station
Country	United Kingdom
Location	Lancashire
Operator	EDF Energy
Status	Operational
Construction started	1979
Commissioned	1988
Reactors	2 × Advanced Gas-cooled Reactors
Capacity	1,200 MW

Heysham 2 Heysham 2 is a twin-reactor nuclear power station on the northwest coast of England near Lancaster, Morecambe Bay, Heysham. The station contributes to the United Kingdom energy infrastructure and forms part of a network including Heysham 1, Trawsfynydd, Sizewell B, and Dungeness B. Ownership and operation have involved National Power, British Energy, EDF Energy, and links to Centrica in corporate transactions.

Overview

Heysham 2 sits adjacent to Heysham 1 on the Lancashire coast and is connected to the National Grid (Great Britain), feeding networks that include Walney Island, Kendal, Preston. The plant's siting considered proximity to Irish Sea cooling waters, local transport links such as the West Coast Main Line, and access to the M6 motorway. The station has been subject to planning and environmental reviews involving Lancashire County Council, Marine Management Organisation, and Environment Agency (England and Wales) processes.

Design and Reactors

Heysham 2 comprises two Advanced Gas-cooled Reactor units, a British design developed following projects like Chapelcross and Hunterston B. The reactors use graphite moderators and carbon dioxide coolant, with on-site turbogenerator sets coupled to alternators similar to those at Hinkley Point B and Hartlepool. The station's design followed standards from United Kingdom Atomic Energy Authority research and construction practices influenced by suppliers such as National Nuclear Corporation and contractors including Foster Wheeler and Rolls-Royce (engineering company). Fuel management utilized uranium oxide fuel supplied according to contracts with companies like Springfields Fuels Limited and regulatory oversight from Office for Nuclear Regulation frameworks.

Construction and Commissioning

Construction began after planning consents associated with the 1970s energy policy and later stages mirrored projects such as Heysham 1 and Hartlepool. Major civil works involved contractors experienced on projects like Drax Power Station and industrial suppliers including English Electric. Commissioning phases included hot functional tests, reactor physics checks, and grid synchronization events with the National Grid system operators. The station's commercial commissioning paralleled events at Sizewell A and drew on lessons from the Windscale fire response in regulatory practice.

Operations and Performance

Operational management has transitioned through entities including Nuclear Electric, British Energy, and EDF Energy, with historical corporate events linking to British Coal restructuring and energy market reforms under policies such as the Electricity Act 1989. Performance metrics—capacity factor, outage schedules, and load-following—were benchmarked against stations like Heysham 1, Torness, and Hartlepool. Maintenance regimes employed vendors familiar from Sellafield and refurbishment programmes coordinated with suppliers such as Doosan Babcock and Siemens. Heysham 2 has participated in grid support schemes and balancing mechanisms overseen by National Grid ESO.

Safety and Regulation

Regulatory oversight has been provided by bodies including the Environment Agency (England and Wales), the Health and Safety Executive, and the Office for Nuclear Regulation, with implications from international instruments like standards from the International Atomic Energy Agency and directives influenced by the European Union framework predating Brexit in the United Kingdom. Safety culture and emergency planning have drawn on national exercises such as those coordinated by Public Health England and local resilience forums including Lancashire Resilience Forum. Events and inspections at Heysham 2 referenced precedents from incidents at Fukushima Daiichi and Three Mile Island in shaping seismic, flooding, and loss-of-coolant strategies, and emergency response coordination with agencies such as the Met Office for meteorological support.

Decommissioning and Waste Management

Decommissioning strategy for AGR plants considers experience from sites like Magnox Electric stations and programmes at Chapelcross and Windscale; Heysham 2's eventual defueling, dismantling, and site restoration will be conducted under policies set by Department for Business, Energy and Industrial Strategy and the Nuclear Decommissioning Authority. Spent fuel management follows arrangements with interim storage at pools and potential transfer to facilities managed by organisations such as Sellafield Ltd for reprocessing or storage, and waste classification follows the Radioactive Waste Management Directorate guidance. Low-level waste consignments have historically used routes through contractors like LLW Repository Ltd and regulatory controls from the Environment Agency (Wales) where applicable, while long-term disposal options align with national geological disposal programmes advocated by the Committee on Radioactive Waste Management.

Category:Nuclear power stations in England Category:Power stations in Lancashire Category:Advanced Gas-cooled Reactors