Reviewer #3: In this paper, a SaltProc-Serpent2 code system was developed to simulate the online reprocessing of the Molten Salt Breeder Reactor (MSBR). However, a lot of similar works have been published. This work needs to be improved further to show the difference and innovation.
[ ] 1. In Page 7, the differences between this work and Park et al.'s work were minor, and the uniqueness of this work is doubtable.
[x] 2. In Page 6, the comments on Aufiero's work were not reasonable. The following sentence "only two publications using these capabilities are available, reflecting the reproducibility challenge inherent in this feature" was not appropriate in this kind of scientific research article.
[ ] 3. Page 6, Figure 11, please explain how the normalization of neutron spectrum was performed. The neutron spectrums were different from those in Park et al.'s work, especially in the fast neutron range. Could the authors explain the differences? The caption of figures should not be too long.
[x] 4. Page 45, Figure 13, only flux distribution at initial state was given.
Reviewer #3: In this paper, a SaltProc-Serpent2 code system was developed to simulate the online reprocessing of the Molten Salt Breeder Reactor (MSBR). However, a lot of similar works have been published. This work needs to be improved further to show the difference and innovation.