PONE-D-24-02854An integrated method for leakage fault mode diagnosis and life prediction of the reactor coolant pumpPLOS ONE

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Academic Editor

PLOS ONE

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This work was supported by National Natural Science Foundation of China (No.52005027) and National key Laboratory of Science and Technology on Reliability and Environmental Engineering."

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This work was supported by National Natural Science Foundation of China (No.

52005027) (Corresponding author: Jie Liu) and National key Laboratory of Science and

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Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. Is the manuscript technically sound, and do the data support the conclusions?

The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented.

Reviewer #1: Partly

Reviewer #2: Partly

Reviewer #3: Partly

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2. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: I Don't Know

Reviewer #2: Yes

Reviewer #3: Yes

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3. Have the authors made all data underlying the findings in their manuscript fully available?

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Reviewer #1: Yes

Reviewer #2: Yes

Reviewer #3: No

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Reviewer #1: Yes

Reviewer #2: No

Reviewer #3: No

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5. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: The authors presented new method for the leakage pattern diagnostic in reactor coolant pump. They compared the degradation values obtained from their models with the real degradation data, however there are big errors appeared, the authors requested to explain more their model and the associated results, some other comments are the following

1- All figures need to be modified for better quality, the figures that shown in the manuscript are not good to be presented in term of quality

2- Figure 8 and Figure 9 don’t have legend, what are the bule and orange lines

3- You need to explain more about the results shown in Figure 10. For example, why at n=55 the error is the lowest, and what is the reason of higher errors..etc. please explain your results in more details

4- The results that shown in Table 6 need to be explained in more details.

5- What is the degradation point in more details

6- In page 24, there is a shifting in figure caption

7- It is very difficult to read figure 12 and 13, and many other figures

Reviewer #2: There are too many typos in the paper and the figures are mostly not legible. The procedure is also all based on derived analytical correlations. Please see the marked comments and corrections in the manuscript.

Reviewer #3: - The abstract does not include sufficient quantitative data. Please revise it.

- The Abstract should contain answers to the following questions: What problem was studied and why is it important? What methods were used? What are the important results? What conclusions can be drawn from the results? What is the novelty of the work and where does it go beyond previous efforts in the literature? Please include specific and quantitative results in your Abstract, while ensuring that it is suitable for a broad audience.

- In literature review, the authors should add more recent publications discussed the current used numerical methods to study TH analysis in nuclear power plants' cores such as Computational fluid dynamics (CFD) and other system codes. Why the ARIMA is selected among other codes and numerical methods? Authors are suggested to enhance the literature review with a section regarding the previous used numerical analyses for similar TH studies. Authors are recommended to modify the literature to include this discussion by adding below refs, which are relevant:

• https://doi.org/10.1063/5.0109255

• https://doi.org/10.1155/2019/4375782

• https://doi.org/10.1016/j.ijheatfluidflow.2023.109115

-The originality of the paper needs to be stated clearly. It is of importance to have sufficient results to justify the novelty of a high-quality journal paper. The Introduction should make a compelling case for why the study is useful along with a clear statement of its novelty or originality by providing relevant information and providing answers to basic questions such as: What is already known in the open literature? What is missing (i.e., research gaps)? What needs to be done, why and how? Clear statements of the novelty of the work should also appear briefly in the Abstract and Conclusions sections.

-An updated and complete literature review should be conducted and should appear as part of the Introduction. The results and findings should be compared to and discussed in the context of earlier work in the literature.

- Is the constructed model's predictions validated against previous experimental and/or numerical data? Please explain.

- Conclusion section sound very general. Please support by more quantitative data.

- Please increase the image quality for all figures in the manuscript.

- check the whole manuscript for grammar and typos.

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Reviewer #1: No

Reviewer #2: Yes

Reviewer #3: No

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Attachments

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Submitted filename: Marked corrections.pdf

An integrated method for leakage fault mode diagnosis and life prediction of the reactor coolant pump

PONE-D-24-02854R1

Dear Dr. Liu,

We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements.

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Kind regards,

Mohammad Alrwashdeh

Academic Editor

PLOS ONE

Additional Editor Comments (optional):

Reviewers' comments: