Re: Dose coefficients for unknown radionuclides

[Jean-Michel Mure <jm.mure@andra.fr>]

Dear radsafers,

Let me thank you for all the information that I have been able to get from the list.

The nuclides that I mentionned are not listed either in the new european directive (96/29 EURATOM), or in the last publications of the ICRP (67, 68, 69, 71, 72), or in the IAEA-BSS 115 - let alone the problem of inert gases such as kypton which do not deliver internal dose. I shoul not have put these in my request. The data contained in the 3 references quoted above are all issued from work performed by the ICRP. Therefore, it's no suprise not to find them in the european legislation or IAEA standards. (Of course, I had searched into these before asking members of the list.)

What I do not understand is that the nuclides (Nb91, Nb92, Gd150, Dy154, Ho163, Bi208, Po208, Po209, Es252) do not have specific properties such as very long or very short half-life, that would pose a calculation problem. Maybe they are not commonly used in the health physics world justifying the fact that they do not deserve any attention (!)

Anyway, I would be very interested in developing DCF's for these nuclides, I guess, by way of models described in the ICRP publications.

I will contact you later next week.

Best regards,




Jean-Michel Mure
Direction de la Sûreté
Service Sécurité et Radioprotection
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