CIAU (Code with capability of internal Assessment of Uncertainty) methodology has been proposed having as basis, or ‘engine’, the UMAE (Uncertainty Method based on Accuracy Extrapolation). The resources needed for the development of the error database of CIAU constitute an issue for the application of the method. An applicable version of the CIAU has been utilized for the code calculation of the RBMK accident scenario caused by the DGH (Distribution Group Header) blockage which causes flow stagnation in several channels and lack of cooling. In the present document the (best estimate) analysis documented in NT 561(05) is repeated with different assumptions related to boundary and initial conditions.
Thermal-hydraulic analysis of coolant flow decrease in concerned core region of Smolensk-3 RBMK during GDH blockage event
D’Auria Francesco
Ultimo
Conceptualization
2006-01-01
Abstract
CIAU (Code with capability of internal Assessment of Uncertainty) methodology has been proposed having as basis, or ‘engine’, the UMAE (Uncertainty Method based on Accuracy Extrapolation). The resources needed for the development of the error database of CIAU constitute an issue for the application of the method. An applicable version of the CIAU has been utilized for the code calculation of the RBMK accident scenario caused by the DGH (Distribution Group Header) blockage which causes flow stagnation in several channels and lack of cooling. In the present document the (best estimate) analysis documented in NT 561(05) is repeated with different assumptions related to boundary and initial conditions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
