CEA-IPSN Participation in the MSLB Benchmark
The OECD/NEA Main Steam Line Break (MSLB) Benchmark allows the comparison of state-of-the-art and best-estimate models used to compute reactivity accidents. The three exercises of the MSLB benchmark are defined with the aim of analyzing the space and time effects in the core and their modeling with computational tools. Point kinetics (exercise 1) simulation results in a return to power (RTP) after scram, whereas 3-D kinetics (exercises 2 and 3) does not display any RTP. The objective is to understand the reasons for the conservative solution of point kinetics and to assess the benefits of best-estimate models. First, the core vessel mixing model is analyzed; second, sensitivity studies on point kinetics are compared to 3-D kinetics; third, the core thermal hydraulics model and coupling with neutronics is presented; finally, RTP and a suitable model for MSLB are discussed.
- Research Organization:
- CEA/DCC/DPE/SPCP, CE Saclay, Gif-sur-Yvette Cedex (FR)
- Sponsoring Organization:
- None (US)
- OSTI ID:
- 784581
- Report Number(s):
- NONE; ISSN 0003-018X; CODEN TANSAO; ISSN 0003-018X; CODEN TANSAO
- Country of Publication:
- United States
- Language:
- English
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