Morphological analysis of debris obtained from melt coolability experiment using CaO-B2O3 corium simulant Online publication date: Mon, 13-Feb-2023
by Vijay Kumar Pandey; Shrikant Verma; Rajendra Kumar Duchaniya; Arun K. Nayak; Upender Pandel
International Journal of Nuclear Energy Science and Technology (IJNEST), Vol. 16, No. 1, 2022
Abstract: The present study is focused on debris analysis obtained from melt coolability experiments. Melt gets fragmented upon interaction with water and get quenched while forming a porous debris bed. This debris bed is coolable by natural circulation. Quenching of the melt pool has been discussed in the central region in the test section. The agglomeration of melt debris and the formation of solid cake regions adversely affected the coolability of the porous debris bed. The characterisation study of debris is carried out. The debris size range was found from 1 to 3 cm. The porosity of the debris bed was measured about 53% using the volumetric method. The data represents a systematic study of the debris agglomeration phenomenon and debris size distribution which is necessary for the development of new ways to mitigate agglomerations of debris to enable the prediction of the debris coolability in various melt coolability scenarios.
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