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Report No.

Verification and validation of sodium fire analysis codes for fast reactors, 4; Analysis of combustion test with large sodium leakage rate in 2 cells geometry

Hamase, Erina ; Ohno, Shuji 

Verification and validation for sodium fire analysis codes have been the focus of our recent research aiming to apply these codes to a safety assessment for a sodium-cooled fast reactor. In the present study, the combustion experiment with large sodium leakage rate in 2 cells geometry was simulated by using the sodium fire analysis code, SPHINCS. Two cells geometry consists of the combustion room and the adjacent room which have the opening between them. Also, the adjacent room has another opening through outside. It was found that the propagation of gas pressure from the combustion room to the adjacent room had generally good agreement between the experiment and SPHINCS analysis. It has been also confirmed that it could be possible to adopt the spray droplet combustion model to the simulation of combustion experiment in which the sodium jet hit the obstacle and the ceiling in the combustion room.



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