DEFENCE-IN-DEPTH IN ABWR TYPE NPP FROM ENVIRONMENT SAFETY ASPECT POINT OF VIEW

DEFENCE-IN-DEPTH IN ABWR TYPE NPP FROM ENVIRONMENT SAFETY ASPECT POINT OF VIEW
Sarwo D.Danupoyo and Ign. Djoko Irianto
Center for Nuclear Technology Assessment - BATAN
Email: igndjoko@batan.go.id
ABSTRACT
DEFENCE-IN-DEPTH IN ABWR TYPE NPP FROM ENVIRONMENT SAFETY ASPECT POINT OF VIEW. Study about application of "defence-in-depth" concept in ABWR type NPP has been done. The study was carried out in order to understand the performance of protection and safety structures in ABWR type NPP from environment safety aspect point of view. The study stressed on simplification of coolant system design, fuel-cladding interaction, core-melt probability, and the possibility of fission product release distributed in environment. The strength of protection and safety structures were observed at loss of coolant accident and severe accident conditions. The result shows that design improvement has increased the ABWR defence-in-depth performance better than conventional BWR type. And so, the radiation release possibility to environment can be reduced.

Keywords : Defence-in-Depth, Safety Structure, Loss of Coolant Accident, Severe Accident, ABWR.
Published : Journal "Pengkajian Sains dan Teknologi Nuklir", Vol.3, No.2, 1998, Pusat Pengkajian Teknologi Nuklir, BATAN, ISSN No. : 0852-8047