Preliminary Investigations on the Importance of Using Deterministic Transport Methods for the Analysis of the PBMR

摘要

The deterministic transport code was used to evaluaterncertain physics effects of the PBMR and to evaluate thernaccuracy of the diffusion code NEM together with otherrndiffusion codes used in the PBMR 268 MW benchmarkrnproblem. As expected, the nodal diffusion method hasrnprovided quite accurate solution to the benchmarkrnproblem, with differences as small as 300 pcm asrncompared to DORT. The capability of NEM for accuraternmodelling of PBMR has once been confirmed byrncomparison with the deterministic state of the art transportrncode DORT.