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This report is the final report of the shared cost action between AEA Technology and the European Commission. It examines fission product phenomena in advanced reactor designs and investigates the role of Phebus FP. The shared cost action is divided into four phases: (i) advanced reactor design features; (ii) severe accident phenomena is pressurised advanced reactors; (iii) identification of modelling limitations; (iv) generic issues. The report describes the work carried out and the main conclusions, the work concentrating on pressurised advanced light water reactors, in particular the SIR and AP600 plants. The main features of these plants were determined and described during phase 1 of the work. A Markov method was used in phase 2 to rank the phenomena occurring in a severe accident in order of risk. The limitations of the codes that could be used to model severe accidents in the advanced plants were also investigated in phase 2. The implications of the work for other designs of reactor and for the Phebus-FP experiments were considered briefly in phase 4.

Additional information

Authors: SMETHURST A J, AEA Winfrith (GB)
Bibliographic Reference: EUR 15298 EN (1993) 156 pp., free of charge
Availability: Available from Joint Research Centre, Publication Department, I-21020 Ispra (Va.) (IT)
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