TY - GEN
T1 - Kritz-2 benchmark calculations using different nuclear data libraries
AU - Messaoudi, Nadia
AU - Na, Byung Chan
AU - Roh, Gyu Hong
N1 - Publisher Copyright:
© PHYSOR 2002.All right reserved.
PY - 2002
Y1 - 2002
N2 - A set of KRITZ-2 experiments with light water moderated lattices with uranium rods and mixed-oxide rods, at room and elevated temperatures, were performed in the early 1970's. Using the results of these experiments, an international benchmark was developed and launched by the OECD/NEA in co-operation with ORNL. This paper presents the results obtained from two versions of MCNP calculations (4C and 4B) for the KRITZ-2 experiments, using three different nuclear data libraries (JEF-2.2, ENDF/B-VI.5 and JENDL-3.2). For the MCNP library generation, the nuclear data processing system NJOY (version 97.114) is used. For both sets of calculations, the three KRITZ-2 cores are explicitly modelled in 3-D geometry. The linear thermal expansion coefficients given in the specification are used to determine the dimensions of the core geometry, the material densities, and the atomic number densities of the materials at high temperatures. The calculated results are compared with experimental results for both keff and pin powers in different cores (two UO2- and one MOXfuelled cores). The influence of the nuclear data libraries on calculated results are examined. The calculated keff results show a strong dependence on the basic data libraries used. The calculated pin powers are in general in good agreement with the experimental values within ±2% of discrepancy for most of the fuel pin positions.
AB - A set of KRITZ-2 experiments with light water moderated lattices with uranium rods and mixed-oxide rods, at room and elevated temperatures, were performed in the early 1970's. Using the results of these experiments, an international benchmark was developed and launched by the OECD/NEA in co-operation with ORNL. This paper presents the results obtained from two versions of MCNP calculations (4C and 4B) for the KRITZ-2 experiments, using three different nuclear data libraries (JEF-2.2, ENDF/B-VI.5 and JENDL-3.2). For the MCNP library generation, the nuclear data processing system NJOY (version 97.114) is used. For both sets of calculations, the three KRITZ-2 cores are explicitly modelled in 3-D geometry. The linear thermal expansion coefficients given in the specification are used to determine the dimensions of the core geometry, the material densities, and the atomic number densities of the materials at high temperatures. The calculated results are compared with experimental results for both keff and pin powers in different cores (two UO2- and one MOXfuelled cores). The influence of the nuclear data libraries on calculated results are examined. The calculated keff results show a strong dependence on the basic data libraries used. The calculated pin powers are in general in good agreement with the experimental values within ±2% of discrepancy for most of the fuel pin positions.
UR - http://www.scopus.com/inward/record.url?scp=85104048299&partnerID=8YFLogxK
M3 - In-proceedings paper
AN - SCOPUS:85104048299
T3 - Proceedings of the PHYSOR 2002 - International Conference on the New Frontiers of Nuclear Technology : Reactor Physics, Safety and High-Performance Computing - The ANS 2002 RPD Topical Meeting
BT - Proceedings of the PHYSOR 2002 - International Conference on the New Frontiers of Nuclear Technology
PB - American Nuclear Society
T2 - 2002 International Conference on the New Frontiers of Nuclear Technology : Reactor Physics, Safety and High-Performance Computing, PHYSOR 2002
Y2 - 7 October 2002 through 10 October 2002
ER -