Criticality benchmark of VVER-1000 fresh fuel assembly with MCNP
by S.M. Shauddin; M.S. Mahmood; M.J.H. Khan
International Journal of Nuclear Energy Science and Technology (IJNEST), Vol. 11, No. 2, 2017

Abstract: IAEA benchmark problem for VVER-1000 reactor fresh fuel assemblies has been evaluated through Monte Carlo (MC) simulation. Infinite multiplication factor (k_∞) values are calculated for different hexagonal fuel assemblies with 2 wt%, 3 wt%, 3.22 wt% and 3.3 wt% enriched U-235. MC simulations have been performed with the computer code MCNP at different temperatures 120°C, 278°C, 280°C, 302°C and 305°C for three different conditions: (i) 0 ppm soluble boron concentration, (ii) 1000 ppm soluble boron concentration, and (iii) full insertion of control rod clusters (absorber material, B₄C) without boron in the moderator. The results are in good agreement with the deterministic calculations as reported in IAEA-TECDOC-847.

Online publication date: Sat, 12-Aug-2017

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