蒙卡程序在全堆精细模型临界计算中已取得较好的成果并发挥重要的作用，但在全寿期实际燃耗计算方面，距离分析应用还具有较大的差距和不足，使得反应堆物理蒙卡分析有较大的局限性。随着对反应堆全寿期燃耗分析要求的不断提高，基于全堆精细模型的反应堆蒙卡全寿期实际燃耗计算成为了反应堆物理蒙卡方法研究中的难点和热点问题。为了在该研究领域取得突破，实现算法研究和程序开发的国际领先，项目基于已有截面处理、大规模并行以及临界搜索方面的研究基础，重点开展截面在线展宽、蒙卡子通道物理热工耦合、大规模燃耗计算数据分解以及换料燃耗计算等核心方法的研究工作，综合实现并发展基于全堆精细模型的蒙卡全寿期实际燃耗计算方法。该研究不仅具有重要的学术创新价值，并且可以有效的扩展反应堆物理蒙卡程序的应用范围。基于目前研究基础及初步计算结果，项目研究方向正确、计划可行，并且具有较好的预期成果。

Reactor physics Monte Carlo codes have achieved very good results and are playing more and more important roles in whole core detailed modeling criticality calculations in full core detailed model calculation, but still have very large gaps and disadvantages in whole core detailed modeling full life cycle burnup calculations. With the increasing needs in reactor full-life cycle burnup calculations, the Monte Carlo reactor full-life cycle burnup calculation based on detailed modeling has become the hot and difficult issue in reactor physics Monte Carlo method research. To break through the current limitations on Monte Carlo full-life cycle burnup calculation and achieve world-leading position in this research area, based on previous research progresses, such as cross-section generation, massive parallel calculation, Monte Carlo criticality search and so on, the proposed project will start with the intense research on cross-section on-the-fly Doppler broadening, Monte Carlo/Sub-channel coupling, data decomposition in massive burnup calculation and burnup calculation with fuel shuffling, and implement all the methods to achieve the Monte Carlo reactor full-life cycle burnup calculation method based on whole core detailed modeling. The research will be an innovative work with higher academic value, and also will expand the application ranges of reactor Monte Carlo code enormously. Recently, some fundamental progresses of this research have been achieved, and the test results shows the proposed project has a correct research.direction and quite feasible research plan, and will achieve very considerable results.