Nuclear data for evaluation of nuclide generation and depletion in light water reactor fuel cycle

Okumura, Keisuke 

First, we explain nuclear data necessary for nuclide generation and depletion calculation. Next, we introduce the point to keep in mind in the assessment of accuracy of nuclide amount by taking amount of Am-241 as an example. Further, we introduce the case related to long-term safety assessment of high level vitrified wastes to show an example of nuclear data needs in the field of nuclear fuel cycle and environments. At last, we discuss method for estimating damaged fuel composition in the Fukushima nuclear accident.