ANALYSIS OF THERMAL MATERIAL MELTING (WAX, PARAFFIN, WOODMETAL) USING MPS (MOVING PARTICLE SEMI-IMPLICIT) METHOD FOR NUCLEAR REACTOR ACCIDENT SIMULATION

• Main Author: Oktavianto, Putra
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/86811
• Institution: Institut Teknologi Bandung

Reactor core material safety throughout operation, shutdown, and accident scenarios is an important consideration that must be maintained. Research on nuclear reactor severe accidents is required in order to understand the accident mechanism that takes place and to develop an appropriate safety and mitigation system in the event of a nuclear reactor accident. Numerous experiments into nuclear reactor accident have been carried out using a range of examples, including the CORA, QUENCH, PHEBUS, LEISAN, LIVE, Ogura, VESTA, and FROMA experiments. A number of computer programs, including MAAP, MELCOR, ASTEC, ICARE/CATHARE, SCDAP/RELAP5, and MPS, have also been validated using some of these experiments. Research on the melting of reactor core material, the first step in the phenomena of nuclear accidents, is still scarce, nevertheless. In order to prepare suitable safety and mitigation measures and avoid unforeseen impacts, this early stage is actually crucial. In this thesis, I thus used the moving particle semi-implicit (MPS) approach to investigate the melting of reactor core material. One software that may be used to model a nuclear accident phenomena is MPS, which is particularly relevant to the melting movement of reactor core material. In this experiment, three samples— woodmetal, paraffin, and wax—were melted in hot liquid medium, which included water and frying oil. The melting properties are examined by using the heated samples as analogues of reactor core material that would melt in the case of a catastrophic nuclear catastrophe. Because water has a greater thermal conductivity than frying oil, both experimental observations and MPS simulations indicate that the sample melts more quickly in water medium. According to the study's findings, the MPS approach can accurately simulate the melting of reactor core material.