Presentation Information
[3H01]Basic experiments on the aerosol sedimentation behavior under accident conditions at sodium-cooled fast reactor
*Sato Rika1, Doi Daisuke1, Umeda Ryota1, Seino Hiroshi1, Kikuchi Shin1 (1. JAEA)
Keywords:
Sodium-cooled fast reactor,Aerosol,Source term,Severe accident
In the source term assessment for SFRs, radioactive materials released from a damaged fuel into a sodium pool can be transported through the atmosphere in the reactor vessel and the containment vessel and finally released into the environment. In the atmosphere during the accident, radioactive materials with high density added to sodium compound aerosols generated by the reactions with atmospheric components. Enhanced sedimentation may reduce suspended aerosol concentrations, thereby decreasing the amount of radioactive materials released into the environment. Therefore, it is crucial to evaluate the behavior of sodium oxide aerosols, the major component of sodium compound aerosols. This presentation reports on the results of experiments on the sedimentation behavior of aerosol particles which simulate the density of sodium oxide.