**Acknowledgements**

The work presented in this article is performed as a part of SURveillance Program (SURP) of HFR vessel with the financial support of NRG. The author thanks Dr. O. Wouters and Ir. T.O. van Staveren for useful discussion and critical review of this work. The author also acknowl‐ edges Dr. C. Li for helping in the extraction of data from the literature.

### **Export control note**

c Assuming that the irradiation conditions at the HFR hotspot are kept unchanged as they are in 2015.

The content within this chapter is classified with the code EU DuC = N. EU DuC means European dual use code.
