Analysis Fuel Burn-Up Distribution Of 1000 MWe PWR-NPP Core Fuelled By UO2 3,4 Wt%.

ANALYSIS FUEL BURN-UP DISTRIBUTION OF 1000 MWE PWR-NPP CORE FUELLED BY UO₂ 3,4 WT%.

Jati Susilo¹, Tukiran Surbakti², Iman Kuntoro^3
1,2Pusat Teknologi Reaktor Dan Keselamatan Nuklir (PTRKN)
³Pusat Teknologi Bahan Industri Nuklir
ABSTRACT
ANALYSIS FUEL BURN-UP DISTRIBUTION OF 1000 MWE PWR-NPP CORE FUELLED BY UO₂ 3,4 WT%. To support utilization of nuclear energy programme, therefore preliminary research about characteristic neutronic for PWR-NPP of core has been done. Some neutronic characteristic that related to core safety is limitation value of discharge burn-up maximum produced by fuel assembly in the core. In this research, to know value of discharge burn-up each fuel assembly in the core, then calculation of fuel burn-up distribution at the PWR core fuelled UOBBB2BBB with 3.4wt% enrichment and Zr-4 for cladding. Those PWR core can produce about 3411 MWth power heat, so that it is classified into PWR 1000 MWe class power of NPP. To analysis fuel burn-up distribution, then use 2 different method of fuel loading pattern as follow. In the PWR-A core, fuel group divided to 2 class of fuel burn-up (2 batch) or each � part of the core. And, fuel group in the PWR-B core distributed in the 3 class of fuel burn-up (3 batch) or each 1/3 part of the core. Core burn-up calculation done using ASMBURN module of SRAC computer code in the 2 dimension geometry with � model of the core. The macroscopic cross section table get by calculation of fuel cell using module PIJ of SRAC with JEND.3.3. As public library data. Temperature of the fuel pellet, cladding and moderator are 900 K, 600 K, and 600 K, respectively. From the calculation result knew that PWR-A core produce average discharge burn-up of fuel assembly (34.55 GWd/t) smaller then PWR-B core (38.01 GWd/t). Discharge burn-up maximum of fuel assembly at the PWR-A core and the PWR-B core are 38.77 GWd/t and 42.36 GWd/t, respectively. So that, with limitation of fuel assembly discharge burn-up maximum in the PWR core fuelled UOBBB2BBB with 3.4 wt% is about 39 GWd/t, then those PWR more exactly using 2 batch fuel loading pattern.

Keywords : burn-up, PWR, UOBBB2BBB, SRAC
Proceeding Seminar Nasional Ke-15 "TEKNOLOGI DAN KESELAMATAN PLTN SERTA FASILITAS NUKLIR", Surakarta, 17 Oktober 2009