RELOCATION ANALYSIS OF MOLTEN MATERIAL USING GRID PLATE AS A REACTOR PROTECTION PLATE WITH VARIATIONS IN PLATE GRID THICKNESS

• Main Author: Auliyaurrohman S S, Sarah
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/79554
• Institution: Institut Teknologi Bandung

The grid plate serves as a crucial component within the safety system, functioning as a protective barrier during major accidents. In such events, the grid plate sacrificially absorbs heat to reduce temperature and contain the molten material from the reactor. Its primary objective is to prevent the leakage of radioactive materials into the environment. This research aims to explore the impact of grid plate thickness on the relocation of the molten material. Paraffin is utilized as the grid plate, and silicone oil serves as the molten material in both experiments and simulations conducted at a temperature of 373 K. The simulations employ the Moving Particle Semi-Implisit (MPS) method. The findings indicate that grid plate thickness significantly influences penetration time, final temperature, and the observed phenomena on the grid plate. A comparison between simulation and experimental data is conducted in the stagnation zone. Through non-dimensional numbers (Reynolds and Prandtl numbers), it is determined that the fluid flow in this study is laminar, and conduction and convection jointly contribute to the heat transfer process from the molten material to the grid plate.