Hydrogen Leakage Simulation and Risk Analysis of Hydrogen Fueling Station in China
Round 1
Reviewer 1 Report
In this manuscript, the safety distance of the H2 fueling station facilities are suggested.
In conclusion, the Author suggested the 'minimum' safety distance is 17.5 m.
But for more generallity of this manuscript, the Reviewer suggests the other reference of the safety distance.
As the Reviewer knew, this facility is the specific concept of the process plant in oil & gas sector. For example, CCR facility is the example of the process plant.
In oil & gas industry, the internationally accepted safety distance guidelines are GAP.2.5.2 and PIP PNE 00003.
In GAP.2.5.2, the safety distance from 'Service Building' to 'Pressure Storage Tanks' are suggested 350 ft (=106.75 m).
In PIP PNE 00003, the safety distance about buidlings should be appliedd by API RP752.
So the Reviewer suggests the introduction of this internationally accepted safety distance guidelines (GAP.2.5.2, API RP725) would be fullfill of this manuscript.
Author Response
Dear reviewer:
Thank you so much for your valuable comments, we have uploaded the point-by point response in the attachment, please see the attachment. Thank you so much for your time.
Best regards,
Jiaxi wu
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The paper is very well written and structured. The methodology is clear and well explained. Results are very interesting and well presented. I just recommend the following corrections:
Lines 121-122: The sentence should be rewritten.
Line 290: the correct range of the hydrogen leak rate is not shown.
Specific Comments:
1. The paper analyzes the risk of a hydrogen fueling station designed referring to Chinese specifications by means of a QRA method integrated with the physical models of hydrogen leakage consequences.
2. The topic is very relevant in the field of hydrogen leakage and the analysis provides very interesting quantitative results.
3. In particular, the work assesses the consequences of a hydrogen leak from a 45 MPa hydrogen storage vessel taking into account the ranges of plume dispersion, jet fire, radiative heat flux, and unconfined overpressure. It provides also useful preventive measures and safe distances.
4. I retain the authors used a strong methodology which is also well described in the paper.
5. All the conclusions are supported by the results and respect the aim of the paper.
6. I retain all references appropriate to the aim and topic of the work.
7. Table and Figures are clear and correctly presented.
Author Response
Dear reviewer:
Thank you so much for your valuable comments, we have uploaded the point-by point response in the attachment, please see the attachment. Thank you so much for your time.
Best regards,
Jiaxi wu
Author Response File: Author Response.pdf
