# The Radioactive Substances Exemption (Northern Ireland) Order 2011, Schedule 1: Tables of radionuclides and descriptions of radioactive material and radioactive waste

Extent: N.I.

Table 1
Radionuclides: values of quantities and concentrations
Radionuclides
Maximum quantity (Bq) on any premises
Maximum concentration (Bq/g)
1.“The Table 1 column 2 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 material and waste; and
(b)“B” means the quantity of that radionuclide specified in column 2 of Table 1.
2.“The Table 1 column 3 summation rule” means the sum of the quotient C/D where—
(a)“C” means the concentration of each radionuclide listed in column 1 of Table 1 that is present in the material and waste; and
(b)“D” means the concentration of that radionuclide specified in column 3 of Table 1.
H-3
109
106
Be-7
107
103
C-14
107
104
O-15
109
102
F-18
106
10
Na-22
106
10
Na-24
105
10
Si-31
106
103
P-32
105
103
P-33
108
105
S-35
108
105
Cl-36
106
104
Cl-38
105
10
Ar-37
108
106
Ar-41
109
102
K-42
106
102
K-43
106
10
Ca-45
107
104
Ca-47
106
10
Sc-46
106
10
Sc-47
106
102
Sc-48
105
10
V-48
105
10
Cr-51
107
103
Mn-51
105
10
Mn-52
105
10
Mn-52m
105
10
Mn-53
109
104
Mn-54
106
10
Mn-56
105
10
Fe-52
106
10
Fe-55
106
104
Fe-59
106
10
Co-55
106
10
Co-56
105
10
Co-57
106
102
Co-58
106
10
Co-58m
107
104
Co-60
105
10
Co-60m
106
103
Co-61
106
102
Co-62m
105
10
Ni-59
108
104
Ni-63
108
105
Ni-65
106
10
Cu-64
106
102
Zn-65
106
10
Zn-69
106
104
Zn-69m
106
102
Ga-72
105
10
Ge-71
108
104
As-73
107
103
As-74
106
10
As-76
105
102
As-77
106
103
Se-75
106
102
Br-82
106
10
Kr-74
109
102
Kr-76
109
102
Kr-77
109
102
Kr-79
105
103
Kr-81
107
104
Kr-83m
1012
105
Kr-85
104
105
Kr-85m
1010
103
Kr-87
109
102
Kr-88
109
102
Rb-86
105
102
Sr-85
106
102
Sr-85m
107
102
Sr-87m
106
102
Sr-89
106
103
Sr-90+
104
102
Sr-91
105
10
Sr-92
106
10
Y-90
105
103
Y-91
106
103
Y-91m
106
102
Y-92
105
102
Y-93
105
102
Zr-93+
107
103
Zr-95
106
10
Zr-97+
105
10
Nb-93m
107
104
Nb-94
106
10
Nb-95
106
10
Nb-97
106
10
Nb-98
105
10
Mo-90
106
10
Mo-93
108
103
Mo-99
106
102
Mo-101
106
10
Tc-96
106
10
Tc-96m
107
103
Tc-97
108
103
Tc-97m
107
103
Tc-99
107
104
Tc-99m
107
102
Ru-97
107
102
Ru-103
106
102
Ru-105
106
10
Ru-106+
105
102
Rh-103m
108
104
Rh-105
107
102
Pd-103
108
103
Pd-109
106
103
Ag-105
106
102
Ag-108m+
106
10
Ag-110m
106
10
Ag-111
106
103
Cd-109
106
104
Cd-115
106
102
Cd-115m
106
103
In-111
106
102
In-113m
106
102
In-114m
106
102
In-115m
106
102
Sn-113
107
103
Sn-125
105
102
Sb-122
104
102
Sb-124
106
10
Sb-125
106
102
Te-123m
107
102
Te-125m
107
103
Te-127
106
103
Te-127m
107
103
Te-129
106
102
Te-129m
106
103
Te-131
105
102
Te-131m
106
10
Te-132
107
102
Te-133
105
10
Te-133m
105
10
Te-134
106
10
I-123
107
102
I-125
106
103
I-126
106
102
I-129
105
102
I-130
106
10
I-131
106
102
I-132
105
10
I-133
106
10
I-134
105
10
I-135
106
10
Xe-131m
104
104
Xe-133
104
103
Xe-135
1010
103
Cs-129
105
102
Cs-131
106
103
Cs-132
105
10
Cs-134m
105
103
Cs-134
104
10
Cs-135
107
104
Cs-136
105
10
Cs-137+
104
10
Cs-138
104
10
Ba-131
106
102
Ba-140+
105
10
La-140
105
10
Ce-139
106
102
Ce-141
107
102
Ce-143
106
102
Ce-144+
105
102
Pr-142
105
102
Pr-143
106
104
Nd-147
106
102
Nd-149
106
102
Pm-147
107
104
Pm-149
106
103
Sm-151
108
104
Sm-153
106
102
Eu-152
106
10
Eu-152m
106
102
Eu-154
106
10
Eu-155
107
102
Gd-153
107
102
Gd-159
106
103
Tb-160
106
10
Dy-165
106
103
Dy-166
106
103
Ho-166
105
103
Er-169
107
104
Er-171
106
102
Tm-170
106
103
Tm-171
108
104
Yb-175
107
103
Lu-177
107
103
Hf-181
106
10
Ta-182
104
10
W-181
107
103
W-185
107
104
W-187
106
102
Re-186
106
103
Re-188
105
102
Os-185
106
10
Os-191
107
102
Os-191m
107
103
Os-193
106
102
Ir-190
106
10
Ir-192
104
10
Ir-194
105
102
Pt-191
106
102
Pt-193m
107
103
Pt-197
106
103
Pt-197m
106
102
Au-198
106
102
Au-199
106
102
Hg-197
107
102
Hg-197m
106
102
Hg-203
105
102
Tl-200
106
10
Tl-201
106
102
Tl-202
106
102
Tl-204
104
104
Pb-203
106
102
Pb-210+
104
10
Pb-212+
105
10
Bi-206
105
10
Bi-207
106
10
Bi-210
106
103
Bi-212+
105
10
Po-203
106
10
Po-205
106
10
Po-207
106
10
Po-210
104
10
At-211
107
103
Rn-220+
107
104
Rn-222+
108
10
Ra-223+
105
102
Ra-224+
105
10
Ra-225
105
102
Ra-226+
104
10
Ra-227
106
102
Ra-228+
105
10
Ac-228
106
10
Th-226+
107
103
Th-227
104
10
Th-228+
104
1
Th-229+
103
1
Th-230
104
1
Th-231
107
103
Th-232 sec
103
1
Th-234+
105
103
Pa-230
106
10
Pa-231
103
1
Pa-233
107
102
U-230+
105
10
U-231
107
102
U-232+
103
1
U-233
104
10
U-234
104
10
U-235+
104
10
U-236
104
10
U-237
106
102
U-238+
104
10
U-238 sec
103
1
U-239
106
102
U-240
107
103
U-240+
106
10
Np-237+
103
1
Np-239
107
102
Np-240
106
10
Pu-234
107
102
Pu-235
107
102
Pu-236
104
10
Pu-237
107
103
Pu-238
104
1
Pu-239
104
1
Pu-240
103
1
Pu-241
105
102
Pu-242
104
1
Pu-243
107
103
Pu-244
104
1
Am-241
104
1
Am-242
106
103
Am-242m+
104
1
Am-243+
103
1
Cm-242
105
102
Cm-243
104
1
Cm-244
104
10
Cm-245
103
1
Cm-246
103
1
Cm-247
104
1
Cm-248
103
1
Bk-249
106
103
Cf-246
106
103
Cf-248
104
10
Cf-249
103
1
Cf-250
104
10
Cf-251
103
1
Cf-252
104
10
Cf-253
105
102
Cf-254
103
1
Es-253
105
102
Es-254
104
10
Es-254m
106
102
Fm-254
107
104
Fm-255
106
103
Any other radionuclide that is:
(a)not of natural terrestrial or cosmic origin; or
(b)listed in table 2 of Schedule 1 to the Act.
103, or the quantity given in respect of that radionuclide in the Public Health England publication ‘Exempt Concentrations and Quantities for Radionuclides not Included in the European Basic Safety Standards Directive’.
1, or the concentration given in respect of that radionuclide in the document referenced in column 2.
Table 2
Radioactive material and accumulated radioactive waste: values of maximum quantities
Substance or article
Maximum quantity of radionuclides for each substance or article
Maximum quantity of radionuclides:
- on any premises in items which satisfy the limit in column 2; or
-in mobile radioactive apparatus held by a person
A sealed source of a type not described in any other row of this table.
4 x 106 Bq
2 x 108 Bq
A Class A gaseous tritium light device.
2 x 1010 Bq
5 x 1012 Bq
A Class B gaseous tritium light device.
1 x 1012 Bq
3 x 1013 Bq
A Class C gaseous tritium light device.
1 x 1012 Bq
No limit
Any sealed source which is solely radioactive material or radioactive waste because it contains tritium.
2 x 1010 Bq
5 x 1012 Bq
A tritium foil source.
2 x 1010 Bq
5 x 1012 Bq
A smoke detector affixed to premises.
4 x 106 Bq
No limit
An electrodeposited source.
6 x 108 Bq Ni-63 or
2 x 108 Bq Fe-55
6 x 1011 Bq
A luminised article.
8 x 107 Bq Pm-147 or
4 x 109 Bq H-3
4 x 1010 Bq Pm-147
or
2 x 1011 Bq H-3
A Ba-137m eluting source.
4 x 104 Bq Cs-137+
4 x 105 Bq Cs-137+
A substance or article which is or contains magnesium alloy or thoriated tungsten in which the thorium concentration does not exceed 4% by mass.
No limit
No limit
A uranium or thorium compound.
Up to a total of 5 kg of uranium and thorium.
Up to a total of 5 kg of uranium and thorium.
A substance or article (other than a sealed source) which is intended for use for medical or veterinary diagnosis or treatment or clinical or veterinary trials.
1 x 109 Bq Tc-99m
and
2 x 108 Bq of all other radionuclides (no more than 1 x 108 Bq of which is contained in radioactive material)
1 x 109 Bq Tc-99m
and
2 x 108 Bq of all other radionuclides, (no more than 1 x 108 Bq of which is contained in radioactive material).
Table 3
Radioactive waste: values of quantities and concentrations
Radioactive waste
Maximum concentration of radionuclides
Maximum quantity of waste to be disposed of in the period stated
Solid radioactive waste, with no single item > 4 x 104 Bq
4 x 105 Bq for the sum of all radionuclides per 0.1m3
2 x 108 Bq/year
Solid radioactive waste containing tritium and C-14 only, with no single item > 4 x 105 Bq
4 x 106 Bq of tritium and C-14 per 0.1m3
2 x 109 Bq/year
Individual sealed sources
2 x 105 Bq for the sum of all radionuclides per 0.1m3
1 x 107 Bq/year
Individual sealed sources which are radioactive waste solely because they contain tritium
2 x 1010 Bq of tritium per 0.1m3
1 x 1013 Bq/year
Luminised articles with no single item containing > 8 x 107 Bq of Pm-147 or > 4 x 109 of tritium
8 x 107 Bq per 0.1m3 of Pm-147
or 4 x 109 Bq per 0.1m3 for tritium
2 x 109 Bq/year of Pm-147
Or 1 x 1011 Bq/year of tritium
Solid radioactive waste which consists of magnesium alloy, thoriated tungsten or dross from hardener alloy in which the thorium concentration does not exceed 4% by mass.
No limit
No limit
Solid uranium or thorium compound
No limit
0.5 kg of uranium or thorium per week
Aqueous liquid uranium or thorium compound
No limit
0.5 kg of uranium or thorium per year
Radioactive waste in aqueous solution being human excreta
No limit
1 x 1010 Bq/year of Tc-99m
and
5 x 109 Bq/year for the sum of all other radionuclides
Table 4
Aqueous radioactive waste values
Radionuclide
Concentration in Bq/ litre
Maximum annual quantity of radionuclides to a relevant sewer (Bq/ year)
Maximum annual quantity of radionuclides directly to a relevant river or the sea (Bq/ year)
1.“The Table 4 column 2 summation rule” means the sum of the quotients A/B where
(a)“A” means the quantity in Bq/litre of each radionuclide listed in column 1 of Table 4 that is present in the aqueous waste which is not described in a row in column 1 of Table 3; and
(b)“B” means the concentration of that radionuclide specified in column 2 of Table 4.
2.“The Table 4 column 3 summation rule” means the sum of the quotients C/D where:
(a)“C” means the quantity in Bq of each radionuclide listed in column 1 of Table 4 that is present in the aqueous waste which is not described in a row of column 1 of Table 3 which is disposed of in the year; and
(b)“D” means the quantity of that radionuclide specified in column 3 of Table 4.
3.“The Table 4 column 4 summation rule” means the sum of the quotients C/E where:
(a)“C” means the quantity in Bq of each radionuclide listed in column 1 of Table 4 that is present in the aqueous waste which is not described in a row in column 1 of Table 3 which is disposed of in the year; and
(b)“E” means the quantity of that radionuclide specified in column 4 of Table 4.
H-3
103
1010
1010
Be-7
1
107
107
C-14
0.1
106
106
F-18
0.1
106
106
Na-22
1
106
107
Na-24
1
107
107
Si-31
10
108
108
P-32
0.001
104
104
P-33
0.001
104
104
S-35
10
3 x 107
108
Cl-36
10
107
108
Cl-38
0.1
106
106
K-42
0.01
105
105
K-43
0.01
105
105
Ca-45
1
107
107
Ca-47
0.1
106
106
Sc-46
0.001
104
104
Sc-47
0.01
105
105
Sc-48
0.001
104
104
V-48
1
107
107
Cr-51
10
108
108
Mn-51
0.001
104
104
Mn-52
0.001
104
104
Mn-52m
0.001
104
104
Mn-53
1
107
107
Mn-54
0.01
105
105
Mn-56
0.001
104
104
Fe-52
0.01
105
105
Fe-55
1
107
107
Fe-59
0.01
105
105
Co-55
0.001
104
104
Co-56
0.001
104
104
Co-57
0.1
106
106
Co-58
0.1
106
106
Co-58m
1
107
107
Co-60
0.01
105
105
Co-60m
1
107
107
Co-61
0.1
106
106
Co-62m
0.001
104
104
Ni-59
1
107
107
Ni-63
102
109
109
Ni-65
0.01
105
105
Cu-64
0.1
106
106
Zn-65
0.1
3 x 105
106
Zn-69
10
108
108
Zn-69m
0.1
106
106
Ga-67
0.1
106
106
Ga-72
0.001
104
104
Ge-71
1
107
107
As-73
10
108
108
As-74
1
107
107
As-76
1
107
107
As-77
1
107
107
Se-75
0.1
3 x 105
106
Br-82
0.1
106
106
Rb-86
0.1
106
106
Sr-85
0.1
106
106
Sr-85m
0.1
106
106
Sr-87m
0.1
106
106
Sr-89
1
107
107
Sr-90+
0.1
3 x 105
106
Sr-91
0.01
105
105
Sr-92
0.01
105
105
Y-90
1
107
107
Y-91
1
107
107
Y-91m
0.01
105
105
Y-92
0.1
106
106
Y-93
0.1
106
106
Zr-93
10
108
108
Zr-95+
0.001
104
104
Zr-97
0.01
105
105
Nb-93m
10
108
108
Nb-94
0.1
106
106
Nb-95
1
107
107
Nb-97
1
107
107
Nb-98
0.1
106
106
Mo-90
0.1
106
106
Mo-93
1
107
107
Mo-99
0.1
106
106
Mo-101
0.01
105
105
Tc-96
1
107
107
Tc-96m
102
109
109
Tc-97
102
109
109
Tc-97m
10
108
108
Tc-99
10
107
108
Tc-99m
10
3 x 107
108
Ru-97
0.01
105
105
Ru-103
0.01
105
105
Ru-105
0.01
105
105
Ru-106+
0.1
106
106
Rh-103m
10
108
108
Rh-105
1
107
107
Pd-103
0.1
106
106
Pd-109
0.1
106
106
Ag-105
1
107
107
Ag-108m
0.1
106
106
Ag-110m
0.1
106
106
Ag-111
10
108
108
Cd-109
1
107
107
Cd-115
0.1
106
106
Cd-115m
1
107
107
In-111
0.01
105
105
In-113m
0.01
105
105
In-114m
0.01
105
105
In-115m
0.01
105
105
Sn-113
0.1
106
106
Sn-125
0.01
105
105
Sb-122
0.1
106
106
Sb-124
0.1
106
106
Sb-125
1
107
107
Te-123m
1
107
107
Te-125m
1
107
107
Te-127
10
108
108
Te-127m
1
107
107
Te-129
10
108
108
Te-129m
1
107
107
Te-131
1
107
107
Te-131m
1
107
107
Te-132
0.1
106
106
Te-133
1
107
107
Te-133m
1
107
107
Te-134
1
107
107
I-123
1
107
107
I-125
1
107
107
I-126
0.1
106
106
I-129
0.1
106
106
I-130
0.1
106
106
I-131
0.1
106
106
I-132
0.1
106
106
I-133
0.1
106
106
I-134
0.1
106
106
I-135
0.1
106
106
Cs-129
0.01
105
105
Cs-131
0.1
106
106
Cs-132
0.01
105
105
Cs-134
0.01
105
105
Cs-134m
0.1
106
106
Cs-135
0.1
106
106
Cs-136
0.001
104
104
Cs-137+
0.01
105
105
Cs-138
0.001
104
104
Ba-131
0.1
106
106
Ba-140
0.1
106
106
La-140
0.001
104
104
Ce-139
0.1
106
106
Ce-141
0.1
106
106
Ce-143
0.01
105
105
Ce-144
0.1
106
106
Pr-142
0.1
106
106
Pr-143
10
108
108
Nd-147
0.01
105
105
Nd-149
0.01
105
105
Pm-147
10
108
108
Pm-149
1
107
107
Sm-151
102
109
109
Sm-153
0.1
106
106
Eu-152
0.01
105
105
Eu-152m
0.01
105
105
Eu-154
0.01
105
105
Eu-155
0.1
106
106
Gd-153
0.1
106
106
Gd-159
0.1
106
106
Tb-160
0.01
105
105
Dy-165
0.1
106
106
Dy-166
0.1
106
106
Ho-166
0.1
106
106
Er-169
10
108
108
Er-171
0.01
105
105
Tm-170
1
107
107
Tm-171
10
108
108
Yb-175
0.1
106
106
Lu-177
0.1
106
106
Hf-181
0.01
105
105
Ta-182
0.001
104
104
W-181
0.1
106
106
W-185
1
107
107
W-187
0.01
105
105
Re-186
1
107
107
Re-188
1
107
107
Os-185
0.01
105
105
Os-191
0.1
106
106
Os-191m
1
107
107
Os-193
0.1
106
106
Ir-190
0.001
104
104
Ir-192
0.01
105
105
Ir-194
0.1
106
106
Pt-191
0.01
105
105
Pt-193m
1
107
107
Pt-197
0.1
106
106
Pt-197m
0.1
106
106
Au-198
1
107
107
Au-199
1
107
107
Hg-197
1
107
107
Hg-197m
0.1
106
106
Hg-203
0.1
106
106
Tl-200
0.01
105
105
Tl-201
0.1
106
106
Tl-202
0.01
105
105
Tl-204
0.1
106
106
Pb-203
0.01
105
105
Pb-210
0.001
104
104
Pb-212
0.1
106
106
Bi-206
0.01
105
105
Bi-207
0.1
106
106
Bi-210
10
108
108
Bi-212
1
107
107
Po-203
0.001
104
104
Po-205
0.001
104
104
Po-207
0.001
104
104
Po-210
0.001
104
104
At-211
1
107
107
Ra-223
0.01
105
105
Ra-224+
0.01
105
105
Ra-225
0.01
105
105
Ra-226+
0.01
105
105
Ra-227
1
107
107
Ra-228
0.01
105
105
Ac-227
0.1
106
106
Ac-228
0.001
104
104
Th-226
0.1
106
106
Th-227
0.01
105
105
Th-228
1
107
107
Th-229
0.01
105
105
Th-230
1
107
107
Th-231
0.1
106
106
Th-232
1
106
107
Th-234
0.1
106
106
Pa-230
0.01
105
105
Pa-231
0.01
105
105
Pa-233
0.1
106
106
U-230
0.1
106
106
U-231
10
108
108
U-232
0.1
106
106
U-233
0.1
106
106
U-234
0.1
106
106
U-235+
0.1
106
106
U-236
0.1
106
106
U-237
10
108
108
U-238+
0.1
106
106
U-239
10
108
108
U-240
10
108
108
Np-237
0.1
106
106
Np-239
1
107
107
Np-240
0.1
106
106
Pu-234
0.01
105
105
Pu-235
0.01
105
105
Pu-236
1
107
107
Pu-237
0.1
106
106
Pu-238
0.1
106
106
Pu-239
0.1
106
106
Pu-240
0.1
106
106
Pu-241
10
108
108
Pu-242
0.1
106
106
Pu-243
0.1
106
106
Pu-244
0.1
106
106
Am-241
0.1
106
106
Am-242
0.1
106
106
Am-242m
0.1
106
106
Am-243
0.1
106
106
Cm-242
1
107
107
Cm-243
0.1
106
106
Cm-244
0.1
106
106
Cm-245
0.01
105
105
Cm-246
0.1
106
106
Cm-247
0.01
105
105
Cm-248
0.1
106
106
Bk-249
102
109
109
Cf-246
1
107
107
Cf-248
1
107
107
Cf-249
0.01
105
105
Cf-250
0.1
106
106
Cf-251
0.01
105
105
Cf-252
0.1
106
106
Cf-253
10
108
108
Cf-254
0.0001
103
103
Es-253
1
107
107
Es-254
0.1
106
106
Es-254m
0.01
105
105
Fm-254
1
107
107
Fm-255
0.1
106
106
Any other radionuclide that is not of natural terrestrial or cosmic origin
0.0001,
103 ,
103 ,
or that concentration which gives rise to a dosage of 10 µSv/year calculated in accordance with the methodology used to calculate other concentrations in this table
or that quantity which corresponds to 3000m3 of aqueous radioactive waste up to the appropriate concentration as calculated in accordance with column 2
or that quantity which corresponds to 10000m3 of aqueous radioactive waste up to the appropriate concentration as calculated in accordance with column 2
Table 4A
NORM waste concentrations and maximum disposal quantities
Radionuclide
Type 1 NORM concentration (Bq/g)
Type 1 NORM total activity for landfill (GBq/year)
Type 1 NORM total activity for incineration (MBq/year)
Type 2 NORM concentration (Bq/g)
U-238sec
5
50
100
10
U-238+
5
50
100
10
U-234
5
50
100
10
Th-230
5
50
100
10
Ra-226+
5
50
100
10
Pb-210+
100
1000
100
200
Po-210
100
1000
100
200
U-235sec
5
50
100
10
U-235+
5
50
100
10
Pa-231
5
50
100
10
Ac-227+
5
50
100
10
Th-232sec
5
50
100
10
Th-232
5
50
100
10
Ra-228+
5
50
100
10
Table 5
Radionuclides in secular equilibrium
Parent radionuclide
Daughter radionuclides
Sr-90+
Y-90
Zr-93+
Nb-93m
Zr-95+
Nb-95
Zr-97+
Nb-97
Ru-106+
Rh-106
Ag-108m+
Ag-108
Cs-137+
Ba-137m
Ba-140+
La-140
Ce-144+
Pr-144
Pb-210+
Bi-210, Po-210
Pb-212+
Bi-212, Tl-208, Po-212
Bi-212+
Tl-208, Po-212
Rn-220+
Po-216
Rn-222+
Po-218, Pb-214, Bi-214, Po-214
Ra-223+
Rn-219, Po-215, Pb-211, Bi-211, Tl-207
Ra-224+
Where Ra-224+ is referred to in table 1: Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212
Where Ra-224+ is referred to in table 4: Pb-212
Ra-226+
Where Ra-226+ is referred to in table 1 and Table 4A : Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
Where Ra-226+ is referred to in table 4: Rn-222, Po-218, Pb-214, Bi-214, Po-214
Ra-228+
Ac-228
Th-226+
Ra-222, Rn-218, Po-214
Th-228+
Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212, Tl-208
Th-229+
Ra-225, Ac-225, Fr-221, At-217, Bi-213, Po-213, Pb-209
Th-232 sec
Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212, Tl-208
Th-234+
Pa-234m
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, Po-212
U-235+
Th-231
U-238+
Th-234, Pa-234m, Pa-234
U-238 sec
Th-234, Pa-234m, 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-240
Np-237+
Pa-233
Am-242m+
Am-242
Am-243+
Np-239

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Source: https://www.legislation.gov.uk/nisr/2011/289/schedule/1 (the official version)
Page: https://openlegislation.uk/radioactive-substances-exemption-northern-ireland-order-2011/schedule-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.