Currently, a high-level waste (HLW) is being planned to be disposеd in a glass matrix. A promising HLW vitrifying method is melting in cold crucible. The purpose of the article is to present a developed graphical approach to justify the safe operational conditions of the HLW vitrification in cold crucible, which is based on the identification of factors leading to disruption of the normal operation. Also the purpose is to represent the dependencies between the parameters important for safety in the combined diagram. The analysis of the possible failures of the normal operation of the cold crucible is carried out. A scheme of trajectories of the failures is proposed. Generalized diagrams of the dependencies between the parameters of the HLW vitrification process in the cold crucible are proposed: the melted matrix temperature, the inductor power, the flow rate and the temperature of the cooling water, the operating pressure in the feeding pipeline and the inner diameter of the crucible pipes. The methodology based on the carried out analysis of the proposed generalized diagrams is presented for determining the deviation ranges of the governing parameters to ensure the normal operation of the cold crucible and to justify the operational limits and conditions of the HLW vitrification in the cold crucible.
Keywords: high-level waste, glass technology, cold crucible induction melter, graphic approach, safety justification.
Article language: Russian. Pp. 29–39. DOI: 10.26277/SECNRS.2021.100.2.003.
