Accident Analysis Simulation in Modular 300MWt Gas Cooled Fast Reactor

International Conference on Advances in Nuclear Science and Engineering 2015

Su'ud, Zaki^1

Nuclear and Biophysics Research Division, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Indonesia^1

关键词: Accident analysis;    Gas cooled fast reactors;    Generator design;    Natural circulation;    Pumping failure;    Reactivity feedback;    Reducing power;    Safety analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/799/1/012003/pdf
DOI  :  10.1088/1742-6596/799/1/012003

来源: IOP

【 摘 要 】

Safety analysis of 300MWt helium gas cooled long-life fast reactors has been performed. The analysis of unprotected loss of flow(ULOF) and unprotected rod run-out transient overpower (UTOP) are discussed. Some simulations for 300 MWt He gas cooled fast reactors has been performed and the results show that the reactor can anticipate complete pumping failure inherently by reducing power through reactivity feedback and remove the rest of heat through natural circulations. GCFR relatively has hard spectrum so it has relatively small Doppler coefficient. In the UTOP accident case the analysis has been performed against external reactivity up to 0.002dk/k. In addition the steam generator design has also consider excess power during severe UTOP case..