# Radioactive Substances Act 1993, Schedule 1A: Tables of NORM industrial activities, radionuclides and summation rules

Extent: S+N.I.

Table 1
NORM Industrial Activities
Part 1
Production and use of thorium, or thorium compounds, and the production of products where thorium is deliberately added
Production and use of uranium or uranium compounds, and the production of products where uranium is deliberately added
Part 2
Extraction, production and use of rare earth elements and rare earth element alloys
Mining and processing of ores other than uranium ore
Production of oil and gas
Removal and management of radioactive scales and precipitates from equipment associated with industrial activities
Any industrial activity utilising phosphate ore
Manufacture of titanium dioxide pigments
The extraction and refining of zircon and manufacture of zirconium compounds
Production of tin, copper, aluminium, zinc, lead and iron and steel
Activities related to coal mine de-watering plants
Water treatment associated with provision of drinking water and the remediation of contamination from other NORM industrial activities
China clay extraction
Geothermal energy production
Table 2
Concentration of radionuclides: NORM industrial activities
Radionuclide
Solid or relevant liquid concentration in becquerels per gram (Bq/g)
Any other liquid concentration in 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
0.1
Pb-210+
5
0.1
0.1
Po-210
5
0.1
0.1
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
Ra228+
1
0.1
0.01
Th-228+
1
1
0.001
Table 3
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
CI-36
1
CI-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
10
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
10
Cd-109+
1
Cd-115+
102
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+
10
Te-133m+
10
Te-134
10
I-123
102
I-125
102
I-126
10
I-129
0.01
I-130
10
I-131+
10
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
100
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
10
Eu-152
0.1
Eu-152m
10
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
103
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
103
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
TI-200
10
TI-201
102
TI-202
10
TI-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+
103
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
10
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
103
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+
102
Cf-254
1
Es-253
102
Es-254+
0.1
Es-254m+
10
Fm-254
104
Fm-255
102
Any other solid or non-aqueous liquid radionuclide that is not of natural terrestrial or cosmic origin
0.01, unless the concentration which gives rise to the same 10 µSv/year dose criteria as used in column 2 of this table can be calculated by reference to the IAEA publication “Application of the Concepts of Exclusion, Exemption and Clearance” IAEA Safety Standards Series NO. RS-G-1.7.
Table 4
Radionuclides in Secular Equilibrium
Parent radionuclide
Daughter radionuclides
Ac-227+
Th-227, Fr-223, Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211
Ag-108m+
Ag-108
Ag-110m+
Ag-110
Am-242m+
Np-238
Am-243+
Np-239
Bi-212+
Tl-208
Cd-109+
Ag-109m
Cd-115+
In-115m
Cd-115m+
In-115m
Ce-144+
Pr-144, Pr-144m
Cf-253+
Cm-249
Cm-247+
Pu-243
Cs-137+
Ba-137m
Es-254+
Bk-250
Es-254m+
Fm-254
Fe-52+
Mn-52m
I-131+
Xe-131m
In-114m+
In-114
Mo-99+
Tc-99m
Mo-101+
Tc-101
Nb-97+
Nb-97m
Np-237+
Pa-233
Pb-210+
Bi-210, Po-210
Pb-212+
Bi-212, Tl-208
Pd-103+
Rh-103m
Pd-109+
Ag-109m
Pu-244+
U-240, Np-240m, Np-240
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
Ru-103+
Rh-103m
Ru-105+
Rh-105m
Ru-106+
Rh-106
Sb-125+
Te-125m
Sn-113+
In-113m
Sr-90+
Y-90
Sr-91+
Y-91m
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
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
Zn-69m+
Zn-69
Zr-95+
Nb-95m
Zr-97+
Nb-97m, Nb-97

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Source: https://www.legislation.gov.uk/ukpga/1993/12/schedule/1A (the official version)
Page: https://openlegislation.uk/radioactive-substances-act-1993/schedule-1A
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.