The Environmental Authorisations (Scotland) Regulations 2018 No. 219

SCHEDULE 8SRADIOACTIVE SUBSTANCES ACTIVITIES

PART 6 STables

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	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	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	10⁴
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 M1.

“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-9¹	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)”M2

Marginal Citations

M1European Commission: Guidance on General Clearance Levels for Practices, Radiation Protection 122, 2000.

M2Published by the International Atomic Energy Agency in Vienna, Austria (publication date August 2006) (IAEA-EPR-D-Values 2006).

Table 5

Information to be provided in records for high-activity sealed sources