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Title: Benchmark of Atucha-2 PHWR RELAP5-3D control rod model by Monte Carlo MCNP5 core calculation

Atucha-2 is a Siemens-designed PHWR reactor under construction in the Republic of Argentina. Its geometrical complexity and peculiarities require the adoption of advanced Monte Carlo codes for performing realistic neutronic simulations. Therefore core models of Atucha-2 PHWR were developed using MCNP5. In this work a methodology was set up to collect the flux in the hexagonal mesh by which the Atucha-2 core is represented. The scope of this activity is to evaluate the effect of obliquely inserted control rod on neutron flux in order to validate the RELAP5-3D{sup C}/NESTLE three dimensional neutron kinetic coupled thermal-hydraulic model, applied by GRNSPG/UNIPI for performing selected transients of Chapter 15 FSAR of Atucha-2. (authors)
Authors:
;  [1] ;  [2]
  1. San Piero A Grado Nuclear Research Group GRNSPG, Univ. of Pisa, via Diotisalvi, 2, 56122 - Pisa (Italy)
  2. Nucleo-electrica Argentina Societad Anonima NA-SA, Buenos Aires (Argentina)
Publication Date:
OSTI Identifier:
22105868
Resource Type:
Conference
Resource Relation:
Conference: PHYSOR 2012: Conference on Advances in Reactor Physics - Linking Research, Industry, and Education, Knoxville, TN (United States), 15-20 Apr 2012; Other Information: Country of input: France; 5 refs.
Publisher:
American Nuclear Society - ANS; La Grange Park, IL (United States)
Research Org:
American Nuclear Society, Inc., 555 N. Kensington Avenue, La Grange Park, Illinois 60526 (United States)
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; ARGENTINA; ATUCHA-2 REACTOR; BENCHMARKS; COMPUTER GRAPHICS; CONTROL ELEMENTS; HEAVY WATER; MONTE CARLO METHOD; NEUTRON FLUX; NEUTRONS; NUCLEAR INDUSTRY; REACTOR CORES; SIMULATION; THERMAL HYDRAULICS; THREE-DIMENSIONAL CALCULATIONS