Validation Of Reactor Criticality And Shielding Based On OpenMC

With the quickening step of the "going out" strategy of nuclear power,the autonomy of computer software for safety analysis of nuclear power plants is becoming more and more important.At present,the three major nuclear power groups in China are developing computer software for safety analysis of nuclear power plants with independent intellectual property rights.As a basic work,the Ministry of environmental protection has proposed a "computer software assessment data sharing platform for nuclear power plant safety analysis",which will support the validation and evaluation of other domestic independent software.The project stipulates that all the benchmarks must be derived from regular ways,such as the published documents or the independent experiments.This article has obtained a certain number of benchmarks through the investigation of a large number of published documents,and the program stipulates that the procedures for verifying the correctness of the benchmarks can not be subject to copyright disputes,so we choose to choose a program.The open source Mongolian card program Open MC is selected for verification.Based on Open MC,we carried out benchmark work verification and got the relevant conclusions:(1)To study the compilation of Open MC,analyze the support of each version of Open MPI,Mpich and HDF5,and determine the matching between the software versions as a tool for the follow-up test benchmarks.(2)Critical benchmarks for the correctness of the benchmark ICSBEP(The International Criticality Safety Benchmark Evaluation Project)benchmark.Based on the 111 MCNP test examples on the open source website,the geometric parameters are obtained.Open MC is used to model it and check the value of the literature.The simulation values of the67 benchmark questions are in good agreement with the experimental values.The correctness of the software calculation is verified,and the reliability of the datum data is explained.These benchmarks can be included.The data platform is used for the verification of newly developed software,but the 44 examples that are not good enough are not included in the data platform.(3)To verify the critical base model of the whole core,select the Hoogenboom full stack model for modeling and critical calculation,take the MCNP results published by the document as the proofreading value,and the result is within the error range of the Open MC calculation value and the proofreading value,which verifies the correctness of the Hoogenboom full core base quasi model data,and can be included in thenumber.The platform is used for critical benchmark verification of newly developed software.(4)The shielding datum of Winfrith water reference in SINBAD 97 datum bank is verified.The result is that the calculation value and the experimental value meet the requirement of relative deviation of less than20%,and the correctness of the calculation is verified,and the reliability of the shielding datum data is verified.It is proved that the Winfrith water benchmark problem can be incorporated into the data platform for the verification of shielding datum for water cross section and energy range0.93 Me V-8.825 Me V calculation software.The above work provides the verified benchmark database and will be included in the data platform,which will support the recognition and evaluation of other autonomous software in China.