T. Tijssen B. Butler
The tritium inventory of future fusion power plants needs to be monitored in the fuel cycle for several reasons; to comply with limits imposed by environment and safety regulators, adhere to practises required by nuclear regulators and for process control purposes. Fulfilling all these requirements leads to a comprehensive list of locations in the …
PreprintRebecca Shaw Barry Butler
An initial safety analysis of a preliminary DEMO tritium fuel cycle has been undertaken using functional failure mode and effects analysis (FFMEA) to create accident scenarios for evaluation. A total of ten scenarios were developed and analysed based upon the current technology planned for the tritium fuel cycle. The findings indicate that the pote…
Preprint PublishedChr. Day K. Battes B. Butler S.Davies L. Farina A. Frattolillo R. George T. Giegericha S. Hanke T. Härtl Y. Igitkhanov T. Jackson N. Jayasekera Y. Kathage P.T. Lang R. Lawless X. Luo C. Neugebauer B. Ploeckl A. Santucci J. Schwenzer T. Teichmann T. Tijssen S. Tosti S. Varoutis A. Vazquez Cortes
In the Pre-Concept Design Phase of EU DEMO, the work package TFV (Tritium – Matter Injection – Vacuum) has developed a smart and tritium self-sufficient three-loop fuel cycle architecture. Driven by the need to reduce the tritium inventory in the systems to an absolute minimum, this requires the continual recirculation of gases in loops without…
Preprint PurchaseR. Lawless B. Butler A. Hollingsworth P. Camp R. Shaw
Any future European DEMO reactor which is based upon the D-T fusion reaction will require a tritium plant to reprocess gases such that they can be effectively resupplied to the tokamak fuelling systems, and to protect the environment and personnel from tritium releases. The plant must also be designed to allow replacement of burnt fuel with tritium…
PublishedLlion Evans L. Margetts P.D. Lee C.A.M. Butler E. Surrey
Functional materials’ properties are influenced by microstructures which can be changed during manufacturing. Experimental characterisation is often time consuming and expensive. A technique is presented which digitises graphite foam via X-ray tomography and converts it into image-based models to determine properties in silico. By simulating a la…
Preprint PublishedX. Lefebvre A. Hollingsworth A. Parracho P. Dalgliesh B. Butler R. Smith JET EFDA Contributors
The aim of the Exhaust Detritiation System (EDS) of the JET Active Gas Handling System (AGHS) is to convert all Q-based species (Q2, Q-hydrocarbons) into Q2O (Q being indifferently H, D or T) which is then trapped on molecular sieve beds (MSB). Regenerating the saturated MSBs leads to the production of tritiated water which is stored in Briggs drum…
Preprint PublishedS. Grünhagen Romanelli S. Brezinsek B. Butler J.P. Coad A. Drenik C. Giroud S. Jachmich T. Keenan U. Kruezi M. Mozetic M. Oberkofler A. Parracho M. Romanelli R. Smith JET EFDA Contributors
Analytical results of a complete JET cryopump regeneration, including the nitrogen panel, follow- ing the first ITER-Like Wall campaign are presented along with the in-situ analyses of residual gas. H/D mixtures and impurities such as nitrogen and neon were injected during plasma operation in the vessel to study radiation cooling in the scrape-off-…
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