# The Environmental Authorisations (Scotland) Regulations 2018, Part 6: Tables


Table 1
Concentration of radionuclides: NORM industrial activities
Radionuclide
Solid or relevant liquid concentration in becquerels per gram (Bq/g)
Any other liquid concentration becquerels per litre (Bq/l)
Gaseous concentration in becquerels per cubic metre (Bq/m3)
U-238sec
1
0.1
0.001
U-238+
5
10
0.01
U-234
5
10
0.01
Th-230
10
10
0.001
Ra-226+
1
1
0.01
Pb-210+
5
0.1
0.01
Po-210
5
0.1
0.01
U-235sec
1
0.1
0.0001
U-235+
5
10
0.01
Pa-231
5
1
0.001
Ac-227+
1
0.1
0.001
Th-232sec
1
0.1
0.001
Th-232
5
10
0.001
Ra-228+
1
0.1
0.01
Th-228+
1
1
0.001
“The table 1 summation rule” means the sum of the quotient A/B where—
(a) “A” means the quantity of each radionuclide listed in column 1 of Table 1 that is present in the substance or article; and
(b) “B” means the quantity of that radionuclide specified in (as appropriate)—
(i) column 2 of Table 1 where the substance or article is a solid or a relevant liquid;
(ii) column 3 of Table 1 where the substance or article is any other liquid; or
(iii) column 4 of Table 1 where the substance or article is a gas.
Table 2
Concentration of radionuclides
Radionuclide
Concentration in becquerels per gram (Bq/g)
H-3
102
Be-7
10
C-14
10
F-18
10
Na-22
0.1
Na-24
1
Si-31
103
P-32
103
P-33
103
S-35
102
Cl-36
1
Cl-38
10
K-42
102
K-43
10
Ca-45
102
Ca-47
10
Sc-46
0.1
Sc-47
102
Sc-48
1
V-48
1
Cr-51
102
Mn-51
10
Mn-52
1
Mn-52m
10
Mn-53
102
Mn-54
0.1
Mn-56
10
Fe-52+
10
Fe-55
103
Fe-59
1
Co-55
10
Co-56
0.1
Co-57
1
Co-58
1
Co-58m
104
Co-60
0.1
Co-60m
103
Co-61
102
Co-62m
10
Ni-59
102
Ni-63
102
Ni-65
10
Cu-64
102
Zn-65
0.1
Zn-69
103
Zn-69m+
10
Ga-72
10
Ge-71
104
As-73
103
As-74
10
As-76
10
As-77
103
Se-75
1
Br-82
1
Rb-86
102
Sr-85
1
Sr-85m
102
Sr-87m
102
Sr-89
103
Sr-90+
1
Sr-91+
10
Sr-92
10
Y-90
103
Y-91
102
Y-91m
102
Y-92
102
Y-93
102
Zr-93
10
Zr-95+
1
Zr-97+
10
Nb-93m
10
Nb-94
0.1
Nb-95
1
Nb-97+
10
Nb-98
10
Mo-90
10
Mo-93
10
Mo-99+
10
Mo-101+
10
Tc-96
1
Tc-96m
103
Tc-97
10
Tc-97m
102
Tc-99
1
Tc-99m
102
Ru-97
10
Ru-103+
1
Ru-105+
10
Ru-106+
0.1
Rh-103m
104
Rh-105
102
Pd-103+
103
Pd-109+
102
Ag-105
1
Ag-108m+
0.1
Ag-110m+
0.1
Ag-111
102
Cd-109+
1
Cd-115+
10
Cd-115m+
102
In-111
10
In-113m
102
In-114m+
10
In-115m
102
Sn-113+
1
Sn-125
10
Sb-122
10
Sb-124
1
Sb-125+
0.1
Te-123m
1
Te-125m
103
Te-127
103
Te-127m+
10
Te-129
102
Te-129m+
10
Te-131
102
Te-131m+
10
Te-132+
1
Te-133+
1
Te-133m+
1
Te-134
10
I-123
102
I-125
102
I-126
10
I-129
0.01
I-130
10
I-131+
1
I-132
10
I-133
10
I-134
10
I-135
10
Cs-129
10
Cs-131
103
Cs-132
10
Cs-134
0.1
Cs-134m
103
Cs-135
102
Cs-136
1
Cs-137+
1
Cs-138
10
Ba-131
10
Ba-140
1
La-140
1
Ce-139
1
Ce-141
102
Ce-143
10
Ce-144+
10
Pr-142
102
Pr-143
103
Nd-147
102
Nd-149
102
Pm-147
103
Pm-149
103
Sm-151
103
Sm-153
102
Eu-152
0.1
Eu-152m
102
Eu-154
0.1
Eu-155
1
Gd-153
10
Gd-159
102
Tb-160
1
Dy-165
103
Dy-166
102
Ho-166
102
Er-169
10 3
Er-171
102
Tm-170
102
Tm-171
103
Yb-175
102
Lu-177
102
Hf-181
1
Ta-182
0.1
W-181
10
W-185
103
W-187
10
Re-186
103
Re-188
102
Os-185
1
Os-191
102
Os-191m
103
Os-193
102
Ir-190
1
Ir-192
1
Ir-194
102
Pt-191
10
Pt-193m
103
Pt-197
103
Pt-197m
102
Au-198
10
Au-199
102
Hg-197
102
Hg-197m
102
Hg-203
10
Tl-200
10
Tl-201
102
Tl-202
10
Tl-204
1
Pb-203
10
Pb-210+
0.01
Pb-212+
1
Bi-206
1
Bi-207
0.1
Bi-210
10
Bi-212+
1
Po-203
10
Po-205
10
Po-207
10
Po-210
0.01
At-211
103
Ra-223+
1
Ra-224+
1
Ra-225
10
Ra-226+
0.01
Ra-227
102
Ra-228+
0.01
Ac-227+
0.01
Ac-228
1
Th-226+
102
Th-227
1
Th-228+
0.1
Th-229+
0.1
Th-230
0.1
Th-231
102
Th-232
0.01
Th-232+
0.01
Th-232sec
0.01
Th-234+
10
Pa-230
10
Pa-231
0.01
Pa-233
10
U-230+
1
U-231
102
U-232+
0.1
U-233
1
U-234
1
U-235+
1
U-235sec
0.01
U-236
10
U-237
102
U-238+
1
U-238sec
0.01
U-239
102
U-240+
102
Np-237+
1
Np-239
102
Np-240
10
Pu-234
102
Pu-235
102
Pu-236
1
Pu-237
102
Pu-238
0.1
Pu-239
0.1
Pu-240
0.1
Pu-241
10
Pu-242
0.1
Pu-243
103
Pu-244+
0.1
Am-241
0.1
Am-242
103
Am-242m+
0.1
Am-243+
0.1
Cm-242
10
Cm-243
1
Cm-244
1
Cm-245
0.1
Cm-246
0.1
Cm-247+
0.1
Cm-248
0.1
Bk-249
102
Cf-246
103
Cf-248
1
Cf-249
0.1
Cf-250
1
Cf-251
0.1
Cf-252
1
Cf-253
102
Cf-253+
1
Cf-254
1
Es-253
102
Es-254+
0.1
Es-254m+
10
Fm-254
10 4
Fm-255
102
Any other solid or relevant liquid radionuclide that is not of natural terrestrial or cosmic origin
0.01 or that concentration which gives rise to a dose to a member of the public of 10 microsieverts per year calculated by reference to guidance by Euratom in RP 122 part 1.
“The table 2 summation rule” means the sum of the quotient A/B where—
(a) “A” means the concentration of each radionuclide listed in column 1 of Table 2 that is present in the substance or article; and
(b) “B” means the quantity of that radionuclide specified in column 2 of Table 2.
Table 3
Radionuclides in secular equilibrium
Parent Radionuclide
Daughter Radionuclides
Fe-52+
Mn-52m
Zn-69m+
Zn-69
Sr-90+
Y-90
Sr-91+
Y-91m
Zr-95+
Nb-95m
Zr-97+
Nb-97m, Nb-97
Nb-97+
Nb-97m
Mo-99+
Tc-99m
Mo-101+
Tc-101
Ru-103+
Rh-103m
Ru-105+
Rh-105m
Ru-106+
Rh-106
Pd-103+
Rh-103m
Pd-109+
Ag-109m
Ag-108m+
Ag-108
Ag-110m+
Ag-110
Cd-109+
Ag-109m
Cd-115+
In-115m
Cd-115m+
In-115m
In-114m+
In-114
Sn-113+
In-113m
Sb-125+
Te-125m
Te-127m+
Te-127
Te-129m+
Te-129
Te-131m+
Te-131
Te-132+
I-132
Te-133+
I-133, Xe-133m, Xe-133
Te-133m+
Te-133, I-133, Xe-133m, Xe-133
I-131+
Xe-131m
Cs-137+
Ba-137m
Ce-144+
Pr-144, Pr-144m
Pb-210+
Bi-210, Po-210
Pb-212+
Bi-212, Tl-208
Bi-212+
Tl-208
Ra-223+
Rn-219, Po-215, Pb-211, Bi-211, Tl-207
Ra-224+
Rn-220, Po-216, Pb-212, Bi-212, Tl-208
Ra-226+
Rn-222, Po-218, Pb-214, Bi-214, Po-214
Ra-228+
Ac-228
Ac-227+
Th-227, Fr-223, Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211
Th-226+
Ra-222, Rn-218, Po-214
Th-228+
Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208
Th-229+
Ra-225, Ac-225, Fr-221, At-217, Bi-213, Tl-209, Pb-209
Th-232+
Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208
Th-232sec
Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212, Tl-208
Th-234+
Pa-234m, Pa-234
U-230+
Th-226, Ra-222, Rn-218, Po-214
U-232+
Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208
U-235+
Th-231
U-235sec
Th-231, Pa-231, Ac-227, Th-227, Fr-223, Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211
U-238+
Th-234, Pa-234m, Pa-234
U-238sec
Th-234, Pa-234m, Pa-234, U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
U-240+
Np-240m, Np-240
Np-237+
Pa-233
Pu-244+
U-240, Np-240m, Np-240
Am-242m+
Np-238
Am-243+
Np-239
Cm-247+
Pu-243
Cf-253+
Cm-249
Es-254+
Bk-250
Es-254m+
Fm-254
Table 4
Activity Levels defining high-activity sealed sources
Radionuclide
Activity (TBq)
(1)The activity given is that of the alpha-emitting radionuclide.
Am-241
6 × 10 –2
Am-241/Be-9(1)
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 × 10 0
Ir-192
8 × 10 –2
Pm-147
4 × 10 1
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 × 10 0
Tm-170
2 × 10 1
Yb-169
3 × 10 –1
Any other radionuclide
The D-value defined for that radionuclide in “Dangerous quantities of radioactive material (D-values)”
Table 5
Information to be provided in records for high-activity sealed sources

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Source: https://www.legislation.gov.uk/sdsi/2018/9780111039014/schedule/8/part/6 (the official version)
Page: https://openlegislation.uk/draft-environmental-authorisations-scotland-regulations-2018/schedule-8/part-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.