Thermophysical analysis of a sandwich shield capsule for radiation coloration of topaz in the WWR-K reactor

M. Aitkulov, Darkhan Sairanbayev, Е. В. Чихрай, Assyl Akhanov, Kirill Kisselyov, Ш. Х. Гизатулин, Asset A. Shaimerdenov, Aigerim Nessipbay, Zhanar Bugybay

2024

Closed access Metadata (CSL-JSON)

DOI 10.1063/5.0192949

Data confidence 70 medium

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Abstract

This paper describes the developed capsule design for radiation staining of topaz in the WWR-K reactor.The main element of the capsule is a radiation shield, which consists of two materials: tantalum and boron carbide.Computer simulation of the developed capsule design using MCNP6 and Comsol software was carried out and its neutron and thermophysical characteristics were determined.A conservative approach was used in the calculations.During the thermophysical analysis, two cooling modes were considered: with forced cooling and without cooling (only natural convection).It is shown that the temperature of topaz during regular operation will reach 134 ° C. In the event of an emergency mode associated with the loss of coolant circulation, the maximum temperature of topaz will rise to 274 ° C.