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首页> 外文会议>International conference on the physics of reactors;PHYSOR 2010 >QUALIFICATION OF APOLLO2.8/JEFF-3.1.1 CODE PACKAGE FOR THE CALCULATIONS OF PWR PLUTONIUM RECYCLING USING THE EPICURE EXPERIMENTS
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QUALIFICATION OF APOLLO2.8/JEFF-3.1.1 CODE PACKAGE FOR THE CALCULATIONS OF PWR PLUTONIUM RECYCLING USING THE EPICURE EXPERIMENTS

机译：使用模范实验计算PWR LU回收率的APOLLO2.8 / JEFF-3.1.1代码包的认证

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The recent release of the JEFF-3.1.1/CEA2005v4 nuclear data library and the latest improvements of the APOLLO2.8 code (281-group SHEM energy mesh, mixture self-shielding treatment and performing 2D solver using the method of characteristics) have allowed the development of new powerful LWR calculation schemes: reference SHEM-MOC and optimized REL2005 for industrial applications. For three years, CEA has been carrying out an intensive qualification program of this new APOLLO2.8 neutronics package. This paper is devoted to the experimental validation of the pin-by-pin power distribution in the specific case of the plutonium recycling in French 900 MWe PWRs. UH1.4 (UO_2 17x17 mock-up) and UMZONE (mixed M0X-UO_2 loading mock-up) experiments from the EPICURE program performed in the EOLE facility at Cadarache Centre have been analysed. Calculation results show good agreements with the experiments: o Reactivity is slightly overpredicted for the two configurations :+480 pern ± 600 pem (2σ) with SHEM-MOC and +510 pem ± 600 pem (2a) with REL2005o The average power ratio Pmox/Pixm is also slightly overpredicted but remains within 2σ experimental uncertainty margins:+1.2% ± 2.4% (2σ) with SHEM-MOC and +1.8% ± 2.4% (2σ) with REL2005.o one pin excepted in each type of assembly, the results obtained on pin-by-pin fission rates for UO2 and MOX assemblies are also very satisfactory, in particular near the interface:±1.4% ± 1.6% (2σ) with SHEM-MOC and ±1.5% ± 1.6% (2σ) with REL2005.These results demonstrate the ability of both APOLLO2.8 schemes and JEFF-3.1.1 library to predict major neutronics parameters of MOX-UO2 fuelled cores, with the same precision as the UO2 cores.
机译：JEFF-3.1.1 / CEA2005v4核数据库的最新版本以及APOLLO2.8代码的最新改进（281组SHEM能量网格，混合物自屏蔽处理以及使用特征方法执行2D求解器）已实现开发新的功能强大的LWR计算方案：参考SHEM-MOC和针对工业应用优化的REL2005。三年来，CEA一直在对这种新的APOLLO2.8中子学组件进行严格的资格认证计划。本文专门针对法国900 MWe压水堆中recycling回收的特定情况，逐针进行功率分配的实验验证。已经分析了在Cadarache Center的EOLE设施中执行的EPICURE程序中的UH1.4（UO_2 17x17实体模型）和UMZONE（混合的M0X-UO_2加载实体模型）实验。计算结果表明与实验具有良好的一致性：o对于两种配置，反应性被稍微高估了： 带SHEM-MOC的+480 pern±600 pem（2σ）和带REL2005的+510 pem±600 pem（2a） o平均功率比Pmox / Pixm也略有高估，但仍在2σ实验不确定性范围内： 使用SHEM-MOC时为+ 1.2％±2.4％（2σ），而使用REL2005时为+ 1.8％±2.4％（2σ）。 o每种类型的组件中除了一个引脚外，UO2和MOX组件逐个引脚的裂变速率所获得的结果也非常令人满意，尤其是在界面附近： SHEM-MOC为±1.4％±1.6％（2σ），REL2005为±1.5％±1.6％（2σ）。 这些结果证明了APOLLO2.8方案和JEFF-3.1.1库均具有以MOU-UO2为燃料的堆芯预测主要中子学参数的能力，其精度与UO2堆芯相同。

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