NEUTRONICS ASPECTS DESIGN OF GENERATION III+ REACTOR IRIS (INTERNATIONAL REACTOR INNOVATIVE AND SECURE)

• Main Author: UKHTIA PANDUPUTRI (NIM : 10213074), TAFFY
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/31210
• Institution: Institut Teknologi Bandung

In this final thesis a study on the core neutronic aspect of reactor generation III+ design International Reactor Innovative & Secure (IRIS) with 1000 MWth power capacity is done. In its operation, an IRIS reactor utilizes uranium oxide fuel (UO2) with 235U enrichment value 2.6% and 4.96%, each located in different areas of reactor core, in addition to burnable absorber ZrB2 for reactivity control. In this study, the neutronic aspect is simulated by using SRAC2006 code system, and referring to IRIS benchmark 44 during reactor core operation time up to 5 years. Parametric survey is done toward core aspects such as fuel enrichment variation, fuel fraction variation, and burnable absorber content variation. Also done is simulation to determine an optimal IRIS reactor core in terms of reactivity. As the result, the best simulated IRIS reactor core is the one consisted of 3 core zones with peripheral area enriched 3%, middle zone enriched 5% with IFBA 0.5 mg/cm, and inner zone enriched 5% with IFBA 0.75 mg/cm, utilizing fuel fraction as much as 52%.