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  • CRITICAL ANALYSIS OF ACCIDENT SCENARIO AND CONSEQUENCES MODELLING APPLIED TO LIGHT WATER REACTOR POWER PLANTS FOR ACCIDENT CATEGORIES BEYOND THE DESIGN BASIS ACCIDENT (DBA)

Abstract

A critical analysis and sensitivity study of the modelling of accident scenarios and environmental consequences are presented, for light water reactor accident categories beyond the standard design basis - accident category. The first chapter, on source term, deals with the release of fission products from a damaged core inventory and their migration within the primary circuit and the reactor containment. Particular attention is given to the influence of safeguards intervention and of the chemical forms of the released fission products. The second chapter deals with their release to the atmosphere, transport and wet or dry deposition, outlining relevant partial effects and confronting short duration or prolonged releases. The third chapter presents a variability analysis, for environmental contamination levels, for two extreme hypothetical scenarios, evidencing the importance of plume rise. A numerical plume rise model is outlined.

Additional information

Authors: BROFFERIO C, COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE, ROMA (ITALY);CAGNETTI P, COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE, ROMA (ITALY);FERRARA V, COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE, ROMA (ITALY);MANILIA E, COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE, ROMA (ITALY);PIETRANGELI G, COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE, ROMA (ITALY);SENNIS C COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE, ROMA (ITALY), COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE, ROMA (ITALY)
Bibliographic Reference: EUR 8902 EN (1984) FS, 141 P., BFR 450, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989123033800 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en
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