Thermal Hydraulics Safety Analysis at Steady State Operation of Burnup Core of TRIGA Mark II Research Reactor Utilizing PARET/ANL and COOLOD-N2

Year 2024, Volume: 37 Issue: 2, 41 - 45, 09.01.2025

Md Altaf Hossen

Abstract

Steady-state thermal hydraulics analysis of 700 MWD burn core of the TRIGA Mark II research reactor has been studied with the computational codes PARET/ANL and COOLOD-N2. This study aims to validate the PARET/ANL code through the execution of steady-state thermal-hydraulics calculations at full power to guarantee that all safety parameters maintain margins well below the safety limits. Fuel centerline temperature, Fuel surface temperature, Fuel clad temperature, DNB heat flux, and DNB ratio of the hottest rod, Enthalpy and Coolant temperature have been calculated. Results from both codes are in good agreement with each other which are far below the safety limit of SAR. Hence PARET/ANL is capable in conducting TRIGA mark II research reactor. Therefore, thermal hydrualics packages and correlations used in this simulation can be utilized for the thermal hydraulics safety analysis of modified TRIGA Mark II cores.

Keywords

Thermal hydraulics, PARET/ANL, COOLOD-N2, Burn up

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