
1 
These Regulations may be cited as the Radioactive Substances Act 1993 (Amendment) Regulations (Northern Ireland) 2011 and shall come into operation on 1st October 2011.
2 

(1) In these Regulations “the Act” means the Radioactive Substances Act 1993.
(2) The Interpretation Act (Northern Ireland) 1954 shall apply to these Regulations as it applies to an Act of the Northern Ireland Assembly.
3 
For sections 1 and 2 of the Act substitute—“
1A. 
In this Act, except as provided by sections 1E, 1F, 1G and 1H—
 “radioactive material” means a substance or article which is not waste, and which satisfies the requirements of any of sections 1B, 1C and 1D as they apply to such a substance or article;
 “radioactive waste” means a substance or article which is waste, and which satisfies the requirements of any of sections 1B, 1C and 1D; and
 “Table 1”, “Table 2”, “Table 3” and “Table 4” mean the tables with those numbers in Schedule 1.
1B. 

(1) Subsection (2) applies to a substance or article which—
(a) arises from or is used in a NORM industrial activity listed in Part 1 of Table 1;
(b) is waste which arises from a NORM industrial activity listed in Part 2 of Table 1; or
(c) is contaminated by a substance or article described in paragraph (a) or (b), including where such contamination occurs indirectly through another contaminated substance or article.
(2) A substance or article to which this subsection applies is radioactive material or radioactive waste where it has a concentration of radioactivity which exceeds the following values in Table 2—
(a) for a solid substance or article or a relevant liquid substance, the value specified in column 2;
(b) for any other liquid substance, the value specified in column 3; or
(c) for a gaseous substance, the value specified in column 4.
1C. 
A substance or article is radioactive material or radioactive waste where—
(a) it contains one or more of the radionuclides of natural terrestrial or cosmic origin which are listed in column 1 of Table 3;
(b) the substance or article—
(i) is processed or is intended to be processed for the radioactive, fissile or fertile properties of those radionuclides; or
(ii) is contaminated by a substance or article to which sub-paragraph (i) applies, including where such contamination occurs indirectly through another contaminated substance or article; and
(c) the substance or article is—
(i) a solid or a relevant liquid and it has a concentration of radioactivity which exceeds the value specified in column 2 of Table 3; or
(ii) any other liquid or a gas.
1D. 
A substance or article which contains one or more radionuclides that are not of natural terrestrial or cosmic origin is radioactive material or radioactive waste where—
(a) it is a solid or a relevant liquid and it has a concentration of radioactivity which exceeds the value specified in column 2 of Table 3; or
(b) it is any other liquid or a gas.
1E. 
A substance or article is not radioactive material or radioactive waste where none of the radionuclides which it contains or which it consists of has a half-life exceeding 100 seconds.
1F. 

(1) A substance or article is not radioactive material or radioactive waste where—
(a) it is contaminated as a result of a climatic process, or a combination of such processes, by radionuclides which—
(i) are not of natural terrestrial or cosmic origin; and
(ii) are not present in the substance or article at a concentration that exceeds that found normally in such a substance or article in the United Kingdom; and
(b) in the absence of such contamination, the substance or article would not otherwise be radioactive material or radioactive waste under this Act.
(2) In this section, a “climatic process” includes wind, precipitation and the general circulation of the atmosphere and oceans.
1G. 

(1) Subject to subsection (2), a substance or article is not radioactive material where—
(a) it is contaminated, but has not been so contaminated with the intention of utilising its radioactive, fissile or fertile properties; and
(b) in the absence of such contamination, the substance or article would not otherwise be radioactive material under this Act.
(2) Subsection (1) only applies while the substance or article is kept on the premises on which the contamination occurred.
1H. 

(1) Subject to subsections (2) and (3), a substance or article is not radioactive material or radioactive waste during the excluded period where—
(a) the substance or article has been disposed of lawfully, and at the time of the disposal no further act of disposal is intended in respect of it; or
(b) the substance or article—
(i) is contaminated by a substance or article to which paragraph (a) applies, including where such contamination occurs indirectly through another contaminated substance or article;
(ii) in the absence of such contamination, would not otherwise be radioactive material or radioactive waste under this Act; and
(iii) is not contaminated with the intention of using its radioactive, fissile or fertile properties.
(2) In subsection (1), “the excluded period” means the period—
(a) beginning at the relevant start time; and
(b) ending in the circumstances specified in subsection (4).
(3) The relevant start time is—
(a) where the substance or article has been disposed of and—
(i) is solid at the time of the disposal;
(ii) is disposed of by burial (whether underground or otherwise) on premises in relation to which an authorisation under section 13 of this Act is held at the time of disposal; and
(iii) is disposed of in accordance with that authorisation,
the time of the revocation of that authorisation;
(b) where the substance or article is contaminated by a substance or article to which paragraph (a) applies, including where such contamination occurs indirectly through another contaminated substance or article, the time of the revocation of the authorisation referred to in paragraph (a)(ii); or
(c) in relation to any other substance or article—
(i) the time of the disposal of it; or
(ii) where the substance or article is one to which subsection (1)(b) applies, the time of the disposal of the substance or article that caused it, directly or indirectly, to be contaminated.
(4) The excluded period ends where, after the beginning of the excluded period, the substance or article is subject to a process which leads to an increase in the radiation exposure of the public or any plant or animal, at the time of that increase.
1J. 
The Department of the Environment may by order vary the provisions of Table 2 and Table 3, either by adding further entries to any column of those tables or by altering or deleting any entry for the time being contained in any column.”.
4 

(1) Section 15(1) of the Act is repealed.
(2) In section 15(2)—
(a) for “Without prejudice to subsection (1), the” substitute “The”;
(b) for “exclude” substitute “exempt”; and
(c) for “exclusion” substitute “exemption”.
5 

(1) In section 47(1) of the Act insert, at the appropriate place in alphabetical order, the following definitions—“
 “m”, where it appears after a radionuclide, means a radionuclide in a metastable state of radioactive decay in which gamma photons are emitted;”;“
 “NORM industrial activity” means the industrial activities involving radionuclides of natural terrestrial or cosmic origin, which activities are listed in Table 1, but not including any such activity where radionuclides of natural terrestrial or cosmic origin are processed for their radioactive, fissile or fertile properties;”;“
 “relevant liquid” means a liquid which—
(a) is non-aqueous; or
(b) is classified (or would be so classified in the absence of its radioactivity) under Council Regulation No.1272/2008 as having any of the following hazard classes and hazard categories (as defined in that Regulation)—
(i) acute toxicity: categories 1, 2 or 3;
(ii) skin corrosion/irritation: category 1 corrosive, sub-categories: 1A, 1B or 1C; or
(iii) hazardous to the aquatic environment: acute category 1 or chronic categories 1 or 2;”.
(2) After section 47(5A) of the Act insert—“
(5B) Where any radionuclide carries the suffix “+” or “sec” in this Act—
(a) that radionuclide represents the parent radionuclide in secular equilibrium with the corresponding daughter radionuclides which are identified in column 2 of Table 4 in Schedule 1 adjacent to the description of that parent radionuclide; and
(b) a concentration value given in a table in Schedule 1 in relation to such a parent radionuclide refers to the value for the parent radionuclide alone, but already takes into account the daughter radionuclides present.
(5C) Where any reference is made to a substance or article possessing a concentration of radioactivity which exceeds the value shown in a particular column of a table in Schedule 1, that value is exceeded if—
(a) where only one radionuclide which is included in that table is present in the substance or article, the concentration of that radionuclide exceeds the concentration specified in the appropriate entry in the appropriate column of that table; or
(b) where more than one such radionuclide is present, the sum of the quotient values of all such radionuclides in the substance or article, as determined by the summation rule following that table as it applies to that column, is greater than one.”.
6 
In section 48 of the Act—
(a) after the entry for “local authority” insert—“
 msection 47(1)”;
(b) after the entry for “mobile radioactive apparatus” insert—“
 NORM industrial activitysection 47(1)”;
(c) for the entries for “radioactive material” and “radioactive waste” substitute—“
 radioactive materialsection 1Aradioactive wastesection 1Arelevant liquidsection 47(1);”;
(d) after the entry for “substance” insert—“
 Tablesection 1A
 Table 2section 1A
 Table 3section 1A
 Table 4section 1A”; and
(e) after the entry for “waste” insert—“
 + or secsection 47(5B)”.
7 
For Schedule 1 to the Act, substitute the Schedule to these Regulations.
8 
Section 8(4) and (5) of the Act are repealed.
9 

(1) Where a substance or article which immediately before 1st October 2011 was not categorised as radioactive material becomes radioactive material on that date by virtue of these Regulations—
(a) a person carrying on any activity described in section 6 of the Act (prohibition of use of radioactive material without registration) in relation to that substance or article immediately before 1st October 2011 is exempt from the requirement to hold a registration under section 7 of the Act (registration of users of radioactive material) in relation to that activity until—
(i) where a registration under that section is applied for in relation to that activity before 1st April 2012—(aa) if the application is granted, the date of grant;(bb) if the application is refused and the applicant appeals against the refusal under section 26 of the Act (registrations, authorisations and notices: appeals from decisions of appropriate agency), the date on which the appeal is determined or withdrawn(cc) if the application is refused, and the applicant is entitled to appeal against the refusal in accordance with section 26 of the Act, but does not do so, 28 days after the date on which the application was refused; or(dd) if the application is refused, and the applicant is not entitled to appeal against the refusal in accordance with section 26 of the Act, the date on which the application is refused; or
(ii) where no such application is made, the earliest of—(aa) 1st April 2012;(bb) where, in relation to the activity in sub-paragraph (a), that person becomes exempted from the duty to hold a registration under an Order made under section 8(6) of the Act which comes into force on or after 1st October 2011, the day after that person first becomes so exempted; or(cc) the day on which the activity ceases;
(b) a person carrying on any activity to which section 9(1) of the Act (prohibition of use of mobile radioactive apparatus without registration) applies in relation to that substance or article immediately before 1st October 2011 is exempt from the requirement to hold a registration under section 10 of the Act (registration of mobile radioactive apparatus) in relation to that activity until—
(i) where a registration under that section is applied for in relation to that activity before 1st April 2012—(aa) if the application is granted, the date of grant;(bb) if the application is refused and the applicant appeals against the refusal under section 26 of the Act, the date on which the appeal is determined or withdrawn whichever is the earlier;(cc) if the application is refused, and the applicant is entitled to appeal against the refusal in accordance with section 26 of the Act but does not do so , 28 days after the date on which the application is refused. Or(dd) if the application is refused, and the applicant is not entitled to appeal against the refusal in accordance with section 26 of the Act, the date on which the application is refused; or
(ii) where no such application is made, the earliest of—(aa) 1st April 2012;(bb) where, in relation to the activity in sub-paragraph (b), that person becomes exempted from the duty to hold a registration under an Order made under section 11(1) of the Act which comes into force on or after 1st October 2011, the day after that person first becomes so exempted; or(cc) the day on which the activity ceases.
(2) Where a substance or article which immediately before 1st October 2011 was not categorised as radioactive waste becomes radioactive waste on that date by virtue of these Regulations—
(a) a person carrying on any activity described in section 13 of the Act (disposal of radioactive waste) in relation to that substance or article immediately before 1st October 2011 is exempt from the requirement to hold an authorisation under that section in relation to that activity until—
(i) where an authorisation under that section is applied for in relation to that activity before 1st April 2012—(aa) if the application is granted, the date of grant;(bb) if the application is refused and the applicant appeals against the refusal under section 26 of the Act, the date on which the appeal is determined or withdrawn whichever is the earlier;(cc) if the application is refused, and the applicant is entitled to appeal against the refusal in accordance with section 26 of the Act but does not do so, 28 days after the date on which the application is refused,; or(dd) if the application is refused, and the applicant is not entitled to appeal against the refusal in accordance with section 26 of the Act, the date on which the application is refused; or
(ii) where no such application is made, the earlier of—(aa) 1st April 2012;(bb) where, in relation to the activity in sub-paragraph (a), that person becomes exempted from the duty to hold an authorisation under an Order made under section 15(2) of the Act which comes into force on or after 1st October 2011, the day after that person first becomes so exempted; or(cc) the day on which the activity ceases;
(b) a person carrying on any activity described in section 14 of the Act (accumulation of radioactive waste) in relation to that substance or article immediately before 1st October 2011 is exempt from the requirement to hold an authorisation under that section in relation to that activity until—
(i) where an authorisation under that section is applied for in relation to that activity before 1st April 2012—(aa) if the application is granted, the date of grant;(bb) if the application is refused and the applicant appeals against the refusal under section 26 of the Act, the date on which the appeal is determined or withdrawn whichever is the earlier;(cc) if the application is refused, and the applicant is entitled to appeal against the refusal in accordance with section 26 of the Act but does not do so, 28 days after the date on which the application was refused ; or(dd) if the application is refused, and the applicant is not entitled to appeal against the refusal in accordance with section 26 of the Act, the date on which the application is refused; or
(ii) where no such application is made, the earliest of—(aa) 1st April 2012;(bb) where, in relation to the activity in sub-paragraph (a), that person becomes exempted from the duty to hold an authorisation under an Order made under section 15(2) of the Act which comes into force on or after 1st October 2011, the day after that person first becomes so exempted; or(cc) the day on which the activity ceases.
(3) Where a person described in paragraph (1)(a)—
(a) holds a registration under section 7 of the Act (registration of users of radioactive material) covering radioactive material which is not described in paragraph (1); and
(b) in relation to the activity and material described in paragraph (1)(a), applies for a variation of that registration instead of applying for a new registration,
 the exemption in paragraph (1)(a) applies to that person but with references in that paragraph to an application being read as references to an application for a variation of a registration under section 12 of the Act (cancellation and variation of registrations).
(4) Where a person described in paragraph (1)(b)—
(a) holds a registration under section 10 of the Act (registration of mobile radioactive apparatus) covering radioactive material which is not described in paragraph (1); and
(b) in relation to the activity and material described in paragraph (1)(b), applies for a variation of that registration instead of applying for a new registration,
 the exemption in paragraph (1)(b) applies to that person but with references in that paragraph to an application being read as references to an application for a variation of a registration under section 12 of the Act (cancellation and variation of registrations).
(5) Where a person described in paragraph (2)(a)—
(a) holds an authorisation under section 13 of the Act (disposal of radioactive waste) covering radioactive waste which is not described in paragraph (2); and
(b) in relation to the activity and waste described in paragraph (2)(a), applies for a variation of that authorisation instead of applying for a new authorisation,
 the exemption in paragraph (2)(a) applies to that person but with references in that paragraph to an application being read as references to an application for a variation of an authorisation under section 17 of the Act (revocation and variation of authorisations).
(6) Where a person described in paragraph (2)(b)—
(a) holds an authorisation under section 14 of the Act (accumulation of radioactive waste) covering radioactive waste which is not described in paragraph (2); and
(b) in relation to the activity and waste described paragraph (2)(b), applies for a variation of that authorisation instead of applying for a new authorisation,
 the exemption in paragraph (2)(b) applies to that person but with references in that paragraph to an application being read as references to an application for a variation of an authorisation under section 17 of the Act (revocation and variation of authorisations).
Sealed with the Official Seal of the Department of the Environment on the 26th July 2011.
Wesley Shannon
A senior officer of the Department of the Environment

SCHEDULE
Regulation 7
“
SCHEDULE 1A
Section 1A-D

Table 1Production 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 2Extraction, 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

Table 2
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 0.5 0.1 0.001
U-238+ 5 10 0.01
U-234 5 10 0.01
Th-230 10 10 0.001
Ra-226+ 0.5 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 0.5 0.1 0.001
Th-232 5 10 0.001
Ra-228+ 1 0.1 0.01
Th-228+ 0.5 1 0.001
1. 
“The table 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 2 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 2 where the substance or article is a solid or a relevant liquid;
(ii) column 3 of Table 2 where the substance or article is any other liquid; or
(iii) column 4 of Table 2 where the substance or article is a gas.


Table 3
Radionuclide Concentration in becquerels per gram (Bq/g)
H-3 102
Be-7 10
C-14 10
F-18 1
Na-22 0.1
Na-24 0.1
Si-31 102
P-32 102
P-33 102
S-35 102
Cl-36 1
Cl-38 1
K-42 10
K-43 1
Ca-45 102
Ca-47 1
Sc-46 0.1
Sc-47 10
Sc-48 0.1
V-48 0.1
Cr-51 10
Mn-51 1
Mn-52 0.1
Mn-52m 1
Mn-53 103
Mn-54 0.1
Mn-56 1
Fe-52+ 1
Fe-55 102
Fe-59 0.1
Co-55 1
Co-56 0.1
Co-57 1
Co-58 0.1
Co-58m 102
Co-60 0.1
Co-60m 103
Co-61 102
Co-62m 1
Ni-59 102
Ni-63 102
Ni-65 1
Cu-64 10
Zn-65 1
Zn-69 102
Zn-69m+ 1
Ga-72 1
Ge-71 104
As-73 102
As-74 1
As-76 1
As-77 102
Se-75 1
Br-82 0.1
Rb-86 10
Sr-85 1
Sr-85m 10
Sr-87m 10
Sr-89 10
Sr-90+ 1
Sr-91+ 1
Sr-92 1
Y-90 102
Y-91 10
Y-91m 1
Y-92 10
Y-93 10
Zr-93 10
Zr-95+ 0.1
Zr-97+ 1
Nb-93m 102
Nb-94 0.1
Nb-95 1
Nb-97+ 1
Nb-98 1
Mo-90 1
Mo-93 10
Mo-99+ 1
Mo-101+ 1
Tc-96 0.1
Tc-96m 10
Tc-97 10
Tc-97m 10
Tc-99 1
Tc-99m 102
Ru-97 1
Ru-103+ 1
Ru-105+ 1
Ru-106+ 1
Rh-103m 104
Rh-105 10
Pd-103+ 103
Pd-109+ 102
Ag-105 1
Ag-108m+ 0.1
Ag-110m+ 0.1
Ag-111 10
Cd-109+ 10
Cd-115+ 1
Cd-115m+ 10
In-111 1
In-113m 10
In-114m+ 1
In-115m 10
Sn-113+ 1
Sn-125 1
Sb-122 1
Sb-124 0.1
Sb-125+ 1
Te-123m 1
Te-125m 102
Te-127 102
Te-127m+ 10
Te-129 10
Te-129m+ 10
Te-131 10
Te-131m+ 1
Te-132+ 0.1
Te-133+ 1
Te-133m+ 1
Te-134 1
I-123 10
I-125 1
I-126 1
I-129 0.1
I-130 1
I-131+ 1
I-132 1
I-133 1
I-134 1
I-135 1
Cs-129 1
Cs-131 103
Cs-132 1
Cs-134 0.1
Cs-134m 103
Cs-135 10
Cs-136 0.1
Cs-137+ 1
Cs-138 1
Ba-131 1
Ba-140 0.1
La-140 0.1
Ce-139 1
Ce-141 10
Ce-143 1
Ce-144+ 10
Pr-142 10
Pr-143 102
Nd-147 10
Nd-149 10
Pm-147 102
Pm-149 102
Sm-151 102
Sm-153 10
Eu-152 0.1
Eu-152m 10
Eu-154 0.1
Eu-155 10
Gd-153 10
Gd-159 10
Tb-160 0.1
Dy-165 102
Dy-166 10
Ho-166 10
Er-169 102
Er-171 10
Tm-170 10
Tm-171 102
Yb-175 10
Lu-177 10
Hf-181 1
Ta-182 0.1
W-181 10
W-185 102
W-187 1
Re-186 102
Re-188 10
Os-185 1
Os-191 10
Os-191m 103
Os-193 10
Ir-190 0.1
Ir-192 0.1
Ir-194 10
Pt-191 1
Pt-193m 102
Pt-197 102
Pt-197m 102
Au-198 1
Au-199 10
Hg-197 10
Hg-197m 10
Hg-203 1
Tl-200 1
Tl-201 10
Tl-202 1
Tl-204 10
Pb-203 1
Pb-210+ 0.01
Pb-212+ 1
Bi-206 0.1
Bi-207 0.1
Bi-210 10
Bi-212+ 1
Po-203 1
Po-205 1
Po-207 1
Po-210 0.01
At-211 102
Ra-223+ 1
Ra-224+ 1
Ra-225 1
Ra-226+ 0.01
Ra-227 10
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 1
Pa-231 0.01
Pa-233 1
U-230+ 1
U-231 10
U-232+ 0.1
U-233 1
U-234 1
U-235+ 1
U-235sec 0.01
U-236 1
U-237 10
U-238+ 1
U-238sec 0.01
U-239 102
U-240+ 10
Np-237+ 0.1
Np-239 10
Np-240 1
Pu-234 102
Pu-235 102
Pu-236 0.1
Pu-237 10
Pu-238 0.1
Pu-239 0.1
Pu-240 0.1
Pu-241 1
Pu-242 0.1
Pu-243 102
Pu-244+ 0.1
Am-241 0.1
Am-242 102
Am-242m+ 0.1
Am-243+ 0.1
Cm-242 1
Cm-243 0.1
Cm-244 0.1
Cm-245 0.1
Cm-246 0.1
Cm-247+ 0.1
Cm-248 0.1
Bk-249 10
Cf-246 10
Cf-248 1
Cf-249 0.1
Cf-250 0.1
Cf-251 0.1
Cf-252 0.1
Cf-253 1
Cf-253+ 1
Cf-254 0.1
Es-253 1
Es-254+ 0.1
Es-254m+ 1
Fm-254 102
Fm-255 10
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 using guidance by Euratom in RP 122 part 1or any successor Euratom guidance or decision applying to the derivation of the concentrations in this table, in which case that concentration.
2. 
“The table 3 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 3 that is present in the substance or article, and
(b) “B” means the quantity of that radionuclide specified in column 2 of Table 3.
Table 4Radionuclides 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”