Title: Morphological analysis of debris obtained from melt coolability experiment using CaO-B₂O₃ corium simulant

Authors: Vijay Kumar Pandey; Shrikant Verma; Rajendra Kumar Duchaniya; Arun K. Nayak; Upender Pandel

Addresses: Department of Mechanical Engineering, Vivekananda Global University Jaipur, Rajasthan, Jaipur, India ' Department of Physics, Poornima University Jaipur, Rajasthan, Jaipur, India ' Department of Metallurgical and Materials Engineering, Malaviya National Institute of Technology Jaipur, Rajasthan, Jaipur, India ' Homi Bhabha National Institute, Mumbai, Maharashtra, India ' Department of Metallurgical and Materials Engineering, Malaviya National Institute of Technology Jaipur, Rajasthan, Jaipur, India

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.

Keywords: binary oxidic melt; debris coolability; melt coolability; SEM; debris morphology; melt coolability; debris agglomeration.

DOI: 10.1504/IJNEST.2022.128994

International Journal of Nuclear Energy Science and Technology, 2022 Vol.16 No.1, pp.44 - 55

Received: 11 Apr 2022
Received in revised form: 08 Oct 2022
Accepted: 18 Oct 2022
Published online: 13 Feb 2023 *

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