This report presents the activities devoted to the development and validation of models for Severe Accident analyses of BWR. The reference severe accident simulation codes are MELCOR and RELAP/SCDAPSIM. The need to have such tools for performing safety analysis of BWR close to the Italian border is presented. Then, the reconstruction of the sequence of events occurred at Fukushima Dai-ichi Unit 1 is reported. MELCOR nodalization of a generic BWR is described and test calculations are reported. RELAP/SCDAPSIM modelling of Fukushima Dai-ichi Unit 1 is also presented and a preliminary analysis of the accident is performed. This model and results should constitute the basis for future MELCOR works.
Fukushima Dai-ichi Unit 1 Accident Simulation by Best Estimate and Integral Codes & Accident Management Procedures Identification Focusing on BWR close to the Italian Borders / Parisi, C.; Mascari, F.; Balestra, Paolo; Giannetti, Fabio; Caruso, Gianfranco. - ELETTRONICO. - (2014).
Fukushima Dai-ichi Unit 1 Accident Simulation by Best Estimate and Integral Codes & Accident Management Procedures Identification Focusing on BWR close to the Italian Borders
BALESTRA, PAOLO;GIANNETTI, FABIO;CARUSO, Gianfranco
2014
Abstract
This report presents the activities devoted to the development and validation of models for Severe Accident analyses of BWR. The reference severe accident simulation codes are MELCOR and RELAP/SCDAPSIM. The need to have such tools for performing safety analysis of BWR close to the Italian border is presented. Then, the reconstruction of the sequence of events occurred at Fukushima Dai-ichi Unit 1 is reported. MELCOR nodalization of a generic BWR is described and test calculations are reported. RELAP/SCDAPSIM modelling of Fukushima Dai-ichi Unit 1 is also presented and a preliminary analysis of the accident is performed. This model and results should constitute the basis for future MELCOR works.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
