SAFETY ANALYSES OF THE LEAD-BISMUTH EUTECTIC COOLED ACCELERATOR DRIVEN SYSTEM XT-ADS
Safety analyses for the XT-ADS were performed with the reactor safety code SIMMER-III. Besides a brief description of the numerical model, three typical transients are presented in this paper, namely, the unprotected loss of flow (ULOF), unprotected transient over-current (UTOC), and the unprotected coolant flow blockage accident (UBA). Because of the important phenomenon of mass flow rate undershooting in the ULOF case, an integral equation model was set up for a further theoretical study of ULOF. The model confirms the numerical simulation results for various cases and gives a deeper understanding of this phenomenon. The faster the pump shut down, the larger is the undershooting of the mass flow rate. On the other hand a larger coolant cold leg area leads to a weaker undershooting. The stability analysis shows that the natural convection state is in the region of the damped oscillation for the current XT-ADS design.
Xue-Nong Chen Danilo D’Andrea
Inst.F.Nuclear and Energy Technologies (IKET) Karlsruhe Institute of Technology (KIT)P.O.Box 3640, D Claudia Matzerath Boccaccini Werner Maschek IKET, KIT P.O.Box 3640, D-76021 Karlsruhe, Germany
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-12
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）