# Council Directive 2013/59/Euratom of 5 December 2013 laying down basic safety standards for protection against the dangers arising from exposure to ionising radiation, and repealing Directives 89/618/Euratom, 90/641/Euratom, 96/29/Euratom, 97/43/Euratom and 2003/122/Euratom, Annex III: Activity values defining high-activity sealed sources as referred to in point (41) of Article 4

Extent: E+W+S+N.I.

For radionuclides not listed in the table below, the relevant activity is identical to the D-value defined in the IAEA publication Dangerous quantities of radioactive material (D-values), (EPR-D-VALUES 2006).
The activity given is that of the alpha-emitting radionuclide
Radionuclide
Activity (TBq)
Am-241
6 × 10–2
Am-241/Be-9
6 × 10–2
Cf-252
2 × 10–2
Cm-244
5 × 10–2
Co-60
3 × 10–2
Cs-137
1 × 10–1
Gd-153
1 × 100
Ir-192
8 × 10–2
Pm-147
4 × 101
Pu-238
6 × 10–2
Pu-239/Be-9
6 × 10–2
Ra-226
4 × 10–2
Se-75
2 × 10–1
Sr-90 (Y-90)
1 × 100
Tm-170
2 × 101
Yb-169
3 × 10–1

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Source: https://www.legislation.gov.uk/eudr/2013/59/annex/III (the official version)
Page: https://openlegislation.uk/eu-directive-2013-59/annex-III
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.