CAJ | 학술논문

使用M ECLOR1.8.6程序对严重事故实验Phebus FPT3进行了模拟分析。通过建模计算，得到了严重事故过程中燃料棒的行为，氢气的产生，裂变产物的释放、迁移和沉降及安全壳的热工水力响应等相关数据。计算值与实验值的对比分析表明，燃料棒的行为、氢气产生的时间和趋势及安全壳的热工水力响应与实验值吻合良好。由于相应程序模型的限制，最终产氢的总量及裂变产物相关的计算值与实验值有所不同。其中，计算的氢气总量较实验值偏小，计算的裂变产物释放量和在安全壳中的沉降量大多较实验值稍高。此外，还利用快速傅里叶变换方法（FFTBM ）对整个建模计算进行了详细的定量化评估。
사용M ECLOR1.8.6정서대엄중사고실험Phebus FPT3진행료모의분석。통과건모계산，득도료엄중사고과정중연료봉적행위，경기적산생，렬변산물적석방、천이화침강급안전각적열공수력향응등상관수거。계산치여실험치적대비분석표명，연료봉적행위、경기산생적시간화추세급안전각적열공수력향응여실험치문합량호。유우상응정서모형적한제，최종산경적총량급렬변산물상관적계산치여실험치유소불동。기중，계산적경기총량교실험치편소，계산적렬변산물석방량화재안전각중적침강량대다교실험치초고。차외，환이용쾌속부리협변환방법（FFTBM ）대정개건모계산진행료상세적정양화평고。
The severe accident experiment Phebus FPT3 was simulated and analyzed by using MECLOR1.8.6 .The fuel rod behavior ,the hydrogen production ,the release , transport and deposition of fission products ,and the thermo‐hydraulic condition in the containment were calculated .The comparison between calculation results and experi‐ment data show s that the rod behavior ,the hydrogen production time and trend ,and the thermo‐hydraulic condition in the containment fit quite well .But the total quantity of hydrogen production and the fission product relative data have some differences betw een the calculation results and experiment data ,because of some limits of the model in the code .The calculated total quantity of hydrogen production is smaller than that of the experiment ,and most of the calculation results about the release and deposition of the fission products are a little bigger than those of the experiment .Besides ,the accura‐cy quantification of the calculation was evaluated with the fast Fourier transform based method (FFTBM ) .