John N Lillington
<[email protected]>

Dr John Lillington has worked for more than 40 years within the UK Nuclear Industry with the United Kingdom Atomic Energy Authority (UKAEA), its privatised sector, AEA Technology, Serco, Amec Foster Wheeler and most recently Wood. During his career, he has worked on all the major nuclear reactor systems (water, gas and fast reactor) as a specialist in thermal-hydraulics, theoretical physicist, safety analyst, technical programme, resource and project manager.  He is currently Chief Technologist, Nuclear Reactors within Wood.  He is a part-time lecturer and examiner at several UK universities and has published two books and numerous articles on nuclear power related subjects.  John was appointed as a member of the first UK Nuclear Innovation and Research Advisory Board (NIRAB) to advise on R & D to underpin the UK Government’s vision for future nuclear energy.


Nuclear cogeneration and the EC GEMINI+ project
John N Lillington 
Wood, Kings Point House, Queen Mother Square, Poundbury, Dorchester, ST1 3BW UK

In regard to cogeneration, High Temperature Gas-cooled Reactors (HTGRs) are capable of providing high temperature process heat for various applications and the latest designs under development could provide outlet temperatures to reach the level required for glass production. Much of the R&D work, which involves coupling of two existing mature technologies (nuclear and conventional power plant), is being carried out at the international level to maximise gearing of investment and knowledge development.

On the reactor development front, the European Nuclear Cogeneration Industrial Initiative (NC2I) and the US Next Generation Nuclear Plant (NGNP) Industrial Alliance have been working together since 2014 on a framework for the development of modern commercial HTGR technology. Taking account of this earlier work and experience from several industrial prototypes that operated in Europe and the US, the EC launched the Euratom GEMINI+ project in September 2017; a specific objective being to develop a reactor design and associated power conversion systems to generate power and high temperature steam for industry. The project comprises an international consortium led by NCBJ in Poland. A market is foreseen whereby fossil fuelled cogeneration plant could be substituted by a HTGR, a positive contribution toward emissions reduction.

The GEMINI+ project is not scheduled for completion until 31 August 2020.   The project therefore is still relatively young. However, good progress has been made in starting to define a reference configuration for an European HTGR. The main tasks of the project are: to propose a safety and licensing framework, define safety and end-user requirements, define design options for the configuration of the cogeneration system, consider innovative approaches to reduce cost, improve safety etc., perform a demonstration simulation and finally disseminate the project outcomes to stakeholders. The presentation will cover a brief survey of work carried out to date as a demonstration and example of the potential use of nuclear energy for high temperature cogeneration.