Steam generator tube rupture (SGTR) scenarios |
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| Authors: | A Auvinen JK Jokiniemi A Lhde T Routamo P Lundstrm H Tuomisto J Dienstbier S Güntay D Suckow A Dehbi M Slootman L Herranz V Peyres J Polo |
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| Affiliation: | aVTT Processes, Biologinkuja 7, P.O. Box 1602, VTT Espoo 02044, Finland;bFortum Nuclear Services, Vantaa, Finland;cNuclear Research Institute Rez plc, Czech Republic;dPaul Scherrer Institute, Villigen-PSI, Switzerland;eNuclear Research and Consultancy Group, Arnhem, Netherlands;fCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Madrid, Spain |
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| Abstract: | The steam generator tube rupture (SGTR) scenarios project was carried out in the EU 5th framework programme in the field of nuclear safety during years 2000–2002. The first objective of the project was to generate a comprehensive database on fission product retention in a steam generator. The second objective was to verify and develop predictive models to support accident management interventions in steam generator tube rupture sequences, which either directly lead to severe accident conditions or are induced by other sequences leading to severe accidents. The models developed for fission product retention were to be included in severe accident codes. In addition, it was shown that existing models for turbulent deposition, which is the dominating deposition mechanism in dry conditions and at high flow rates, contain large uncertainties. The results of the project are applicable to various pressurised water reactors, including vertical steam generators (western PWR) and horizontal steam generators (VVER). |
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