k vyhlášce č. 422/2016 Sb.
Zprošťovací a uvolňovací úrovně
Zprošťovací úrovně a uvolňovací úrovně hmotnostní aktivity pro jakékoliv množství a druh radioaktivní pevné látky

NuklidHmotnostní aktivita
[kBq/kg]
H-3100
Be-710
C-141
F-1810
Na-220,1
Na-241
Si-311 000
P-321 000
P-331 000
S-35100
Cl-361
Cl-3810
K-42100
K-4310
K-4010
Ca-45100
Ca-4710
Sc-460,1
Sc-47100
Sc-481
V-481
Cr-51100
Mn-5110
Mn-521
Mn-52m10
Mn-53100
Mn-540,1
Mn-5610
Fe-52*10
Fe-551 000
Fe-591
Co-5510
Co-560,1
Co-571
Co-581
Co-58m10 000
Co-600,1
Co-60m1 000
Co-61100
Co-62m10
Ni-59100
Ni-63100
Ni-6510
Cu-64100
Zn-650,1
Zn-691 000
Zn-69m*10
Ga-7210
Ge-7110 000
As-731 000
As-7410
As-7610
As-771 000
Se-751
Br-821
Rb-86100
Sr-851
Sr-85m100
Sr-87m100
Sr-891 000
Sr-90*1
Sr-91*10
Sr-9210
Y-901 000
Y-91100
Y-91m100
Y-92100
Y-93100
Zr-9310
Zr-95*1
Zr-97*10
Nb-93m10
Nb-940,1
Nb-951
Nb-97*10
Nb-9810
Mo-9010
Mo-9310
Mo-99*10
Mo-101*10
Tc-961
Tc-96m1 000
Tc-9710
Tc-97m100
Tc-991
Tc-99m100
Ru-9710
Ru-103*1
Ru-105*10
Ru-106*0,1
Rh-103m10 000
Rh-105100
Pd-103*1 000
Pd-109*100
Ag-1051
Ag-110m*0,1
Ag-111100
Cd-109*1
Cd-115*10
Cd-115m*100
In-11110
In-113m100
In-114m*10
In-115m100
Sn-113*1
Sn-12510
Sb-12210
Sb-1241
Sb-125*0,1
Te-123m1
Te-125m1 000
Te-1271 000
Te-127m*10
Te-129100
Te-129m*10
Te-131100
Te-131m*10
Te-132*1
Te-13310
Te-133m10
Te-13410
I-123100
I-125100
I-12610
I-1290,01
I-13010
I-13110
I-13210
I-13310
I-13410
I-13510
Cs-12910
Cs-1311 000
Cs-13210
Cs-1340,1
Cs-134m1 000
Cs-135100
Cs-1361
Cs-137*0,1
Cs-13810
Ba-13110
Ba-1401
La-1401
Ce-1391
Ce-141100
Ce-14310
Ce-144*10
Pr-142100
Pr-1431 000
Nd-147100
Nd-149100
Pm-1471 000
Pm-1491 000
Sm-1511 000
Sm-153100
Eu-1520,1
Eu-152m100
Eu-1540,1
Eu-1551
Gd-15310
Gd-159100
Tb-1601
Dy-1651 000
Dy-166100
Ho-166100
Er-1691 000
Er-171100
Tm-170100
Tm-1711 000
Yb-175100
Lu-177100
Hf-1811
Ta-1820,1
W-18110
W-1851 000
W-18710
Re-1861 000
Re-188100
Os-1851
Os-191100
Os-191m1 000
Os-193100
Ir-1901
Ir-1921
Ir-194100
Pt-19110
Pt-193m1 000
Pt-1971 000
Pt-197m100
Au-19810
Au-199100
Hg-197100
Hg-197m100
Hg-20310
Tl-20010
Tl-201100
Tl-20210
Tl-2041
Pb-20310
Bi-2061
Bi-2070,1
Po-20310
Po-20510
Po-20710
At-2111 000
Ra-22510
Ra-227100
Th-2261 000
Th-2290,1
Th-2321
Pa-23010
Pa-23310
U-23010
U-231100
U-232*0,1
U-2331
U-23610
U-237100
U-2381
U-239100
U-240*100
Np-237*1
Np-239100
Np-24010
Pu-234100
Pu-235100
Pu-2361
Pu-237100
Pu-2380,1
Pu-2390,1
Pu-2400,1
Pu-24110
Pu-2420,1
Pu-2431 000
Pu-244*0,1
Am-2410,1
Am-2421 000
Am-242m*0,1
Am-243*0,1
Cm-24210
Cm-2431
Cm-2441
Cm-2450,1
Cm-2460,1
Cm-247*0,1
Cm-2480,1
Bk-249100
Cf-2461 000
Cf-2481
Cf-2490,1
Cf-2501
Cf-2510,1
Cf-2521
Cf-253100
Cf-2541
Es-253100
Es-254*0,1
Es-254m*10
Fm-25410 000
Fm-255100

Vysvětlivky:
Hodnoty hmotnostní aktivity u nuklidů označených * (mateřské nuklidy) zahrnují též produkty jejich rozpadu (dceřiné nuklidy) s nimiž jsou v radioaktivní rovnováze.
Dceřiné nuklidy v radioaktivní rovnováze s mateřským nuklidem se samostatně neposuzují.
Mateřské a příslušné dceřiné nuklidy v radioaktivní rovnováze
Mateřský nuklidDceřiné nuklidy
Fe-52Mn-52m
Zn-69mZn-69
Sr-90Y-90
Sr-91Y-91m
Zr-95Nb-95
Zr-97Nb-97m, Nb-97
Mo-99*Tc-99m
Nb-97Nb-97m
Mo-99Tc-99m
Mo-101Tc-101
Ru-103Rh-103m
Ru-105Rh-105m
Ru-106Rh-106
Pd-103Rh-103m
Pd-109Ag-109m
Ag-110mAg-110
Cd-109Ag-109m
Cd-115In-115m
Cd-115mIn-115m
In-114mIn-114
Sn-113In-113m
Sb-125Te-125m
Te-127mTe-127
Te-129mTe-129
Te-131mTe-131
Te132I-132
Cs-137Ba-137m
Ce-144Pr-144, Pr-144m
U-232Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208
U-240Np-240m, Np-240
Np-237Pa-233
Pu-244U-240, Np-240m, Np-240
Am-242mNp-238
Am-243Np-239
Cm-247Pu-243
Es-254Bk-250
Es-254mFm-254

Zprošťovací úrovně hmotnostní aktivity pro malé množství radioaktivní látky a zprošťovací úrovně aktivity
NuklidHmotnostní aktivita
[kBq/kg]
Aktivita
[Bq]
H-3106109
Be-7103107
Be-10104106
C-1110106
C-14104107
N-13102109
Ne-19102109
O-15102109
F-1810106
Na-2210106
Na-2410105
Mg-2810105
Al-2610105
Si-31103106
Si-32103106
P-32103105
P-33105108
S-35105108
Cl-36104106
Cl-3810105
Cl-3910105
Ar-37106108
Ar-39107104
Ar-41102109
K-40102106
K-42102106
K-4310106
K-4410105
K-4510105
Ca-41105107
Ca-45104107
Ca-4710106
Sc-4310106
Sc-4410105
Sc-45102107
Sc-4610106
Sc-47102106
Sc-4810105
Sc-49103105
Ti-4410105
Ti-4510106
V-4710105
V-4810105
V-49104107
Cr-48102106
Cr-4910106
Cr-51103107
Mn-5110105
Mn-5210105
Mn-52m10105
Mn-53104109
Mn-5410106
Mn-5610105
Fe-5210106
Fe-55104106
Fe-5910106
Fe-60102105
Co-5510106
Co-5610105
Co-57102106
Co-5810106
Co-58m104107
Co-6010105
Co-60m103106
Co-61102106
Co-62m10105
Ni-5610106
Ni-5710106
Ni-59104108
Ni-63105108
Ni-6510106
Ni-66104107
Cu-6010105
Cu-6110106
Cu-64102106
Cu-67102106
Zn-62102106
Zn-6310105
Zn-6510106
Zn-69104106
Zn-69m102106
Zn-71m10106
Zn-72102106
Ga-6510105
Ga-6610105
Ga-67102106
Ga-6810105
Ga-70102106
Ga-7210105
Ga-73102106
Ge-6610106
Ge-6710105
Ge-68*10105
Ge-6910106
Ge-71104108
Ge-75103106
Ge-7710105
Ge-78102106
As-6910105
As-7010105
As-7110106
As-7210105
As-73103107
As-7410106
As-76102105
As-77103106
As-7810105
Se-7010106
Se-7310106
Se-73m102106
Se-75102106
Se-79104107
Se-81103106
Se-81m103107
Se-8310105
Br-7410105
Br-74m10105
Br-7510106
Br-7610105
Br-77102106
Br-80102105
Br-80m103107
Br-8210106
Br-83103106
Br-8410105
Kr-74102109
Kr-76102109
Kr-77102109
Kr-79103105
Kr-81104107
Kr-81m1031010
Kr-83m1051012
Kr-85105104
Kr-85m1031010
Kr-87102109
Kr-88102109
Rb-7910105
Rb-8110106
Rb-81m103107
Rb-82m10106
Rb-83*102106
Rb-8410106
Rb-86102105
Rb-87103107
Rb-88102105
Rb-89102105
Sr-80103107
Sr-8110105
Sr-82*10105
Sr-8310106
Sr-85102106
Sr-85m102107
Sr-87m102106
Sr-89103106
Sr-90*102104
Sr-9110105
Sr-9210106
Y-8610105
Y-86m102107
Y-87*10106
Y-8810106
Y-90103105
Y-90m10106
Y-91103106
Y-91m102106
Y-92102105
Y-93102105
Y-9410105
Y-9510105
Zr-86102107
Zr-88102106
Zr-8910106
Zr-93*103107
Zr-9510106
Zr-97*10105
Nb-8810105
Nb-8910105
Nb-89m10105
Nb-9010105
Nb-93m104107
Nb-9410106
Nb-9510106
Nb-95m102107
Nb-9610105
Nb-9710106
Nb-9810105
Mo-9010106
Mo-93103108
Mo-93m10106
Mo-99*102106
Mo-10110106
Tc-9310106
Tc-93m10106
Tc-9410106
Tc-94m10105
Tc-9510106
Tc-95m10106
Tc-9610106
Tc-96m103107
Tc-97103108
Tc-97m103107
Tc-9810106
Tc-99104107
Tc-99m102107
Tc-101102106
Tc-10410105
Ru-94102106
Ru-97102107
Ru-103102106
Ru-10510106
Ru-106*102105
Rh-9910106
Rh-99m10106
Rh-10010106
Rh-101102107
Rh-101m102107
Rh-10210106
Rh-102m102106
Rh-103m104108
Rh-105102107
Rh-106m10105
Rh-107102106
Pd-100102107
Pd-101102106
Pd-103103108
Pd-107105108
Pd-109103106
Ag-10210105
Ag-10310106
Ag-10410106
Ag-104m10106
Ag-105102106
Ag-10610106
Ag-106m10106
Ag-108m*10106
Ag-110m10106
Ag-111103106
Ag-11210105
Ag-11510105
Cd-104102107
Cd-107103107
Cd-109104106
Cd-113103106
Cd-113m103106
Cd-115102106
Cd-115m103106
Cd-11710106
Cd-117m10106
In-10910106
In-11010106
In-110m10105
In-111102106
In-112102106
In-113m102106
In-114103105
In-114m102106
In-115103105
In-115m102106
In-116m10105
In-11710106
In-117m102106
In-119m102105
Sn-110102107
Sn-111102106
Sn-113103107
Sn-117m102106
Sn-119m103107
Sn-121105107
Sn-121m*103107
Sn-123103106
Sn-123m102106
Sn-125102105
Sn-126*10105
Sn-12710106
Sn-12810106
Sb-11510106
Sb-11610106
Sb-116m10105
Sb-117102107
Sb-118m10106
Sb-119103107
Sb-120102106
Sb-120m10106
Sb-122102104
Sb-12410106
Sb-124m102106
Sb-125102106
Sb-12610105
Sb-126m10105
Sb-12710106
Sb-12810105
Sb-128m10105
Sb-12910106
Sb-13010105
Sb-13110106
Te-116102107
Te-12110106
Te-121m102106
Te-123103106
Te-123m102107
Te-125m103107
Te-127103106
Te-127m103107
Te-129102106
Te-129m103106
Te-131102105
Te-131m10106
Te-132102107
Te-13310105
Te-133m10105
Te-13410106
I-12010105
I-120m10105
I-121102106
I-123102107
I-12410106
I-125103106
I-126102106
I-128102105
I-129102105
I-13010106
I-131102106
I-13210105
I-132m102106
I-13310106
I-13410105
I-13510106
Xe-120102109
Xe-121102109
Xe-122*102109
Xe-123102109
Xe-125103109
Xe-127103105
Xe-129m103104
Xe-131m104104
Xe-133m103104
Xe-133103104
Xe-1351031010
Xe-135m102109
Xe-138102109
Cs-12510104
Cs-127102105
Cs-129102105
Cs-130102106
Cs-131103106
Cs-13210105
Cs-134m103105
Cs-13410104
Cs-135104107
Cs-135m10106
Cs-13610105
Cs-137*10104
Cs-13810104
Ba-126102107
Ba-128102107
Ba-131102106
Ba-131m102107
Ba-133102106
Ba-133m102106
Ba-135m102106
Ba-137m10106
Ba-139102105
Ba-140*10105
Ba-141102105
Ba-142102106
La-13110106
La-13210106
La-135103107
La-137103107
La-13810106
La-14010105
La-141102105
La-14210105
La-143102105
Ce-134*103107
Ce-13510106
Ce-137103107
Ce-137m103106
Ce-139102106
Ce-141102107
Ce-143102106
Ce-144*102105
Pr-13610105
Pr-137102106
Pr-138m10106
Pr-139102107
Pr-142102105
Pr-142m107109
Pr-143104106
Pr-144102105
Pr-145103105
Pr-14710105
Nd-136102106
Nd-138103107
Nd-139102106
Nd-139m10106
Nd-141102107
Nd-147102106
Nd-149102106
Nd-15110105
Pm-14110105
Pm-143102106
Pm-14410106
Pm-145103107
Pm-14610106
Pm-147104107
Pm-14810105
Pm-148m10106
Pm-149103106
Pm-15010105
Pm-151102106
Sm-14110105
Sm-141m10106
Sm-142102107
Sm-145102107
Sm-14610105
Sm-14710104
Sm-151104108
Sm-153102106
Sm-155102106
Sm-156102106
Eu-14510106
Eu-14610106
Eu-147102106
Eu-14810106
Eu-149102107
Eu-15010106
Eu-150m103106
Eu-15210106
Eu-152m102106
Eu-15410106
Eu-155102107
Eu-15610106
Eu-157102106
Eu-15810105
Gd-14510105
Gd-146*10106
Gd-14710106
Gd-14810104
Gd-149102106
Gd-151102107
Gd-15210104
Gd-153102107
Gd-159103106
Tb-14710106
Tb-14910106
Tb-15010106
Tb-15110106
Tb-153102107
Tb-15410106
Tb-155102107
Tb-15610106
Tb-156m (24,4h)103107
Tb-156m' (5 h)104107
Tb-157104107
Tb-15810106
Tb-16010106
Tb-161103106
Dy-15510106
Dy-157102106
Dy-159103107
Dy-165103106
Dy-166103106
Ho-155102106
Ho-157102106
Ho-159102106
Ho-161102107
Ho-162102107
Ho-162m10106
Ho-164103106
Ho-164m103107
Ho-166103105
Ho-166m10106
Ho-167102106
Er-16110106
Er-165103107
Er-169104107
Er-171102106
Er-172102106
Tm-16210106
Tm-16610106
Tm-167102106
Tm-170103106
Tm-171104108
Tm-172102106
Tm-173102106
Tm-17510106
Yb-162102107
Yb-166102107
Yb-167102106
Yb-169102107
Yb-175103107
Yb-177102106
Yb-178103106
Lu-16910106
Lu-17010106
Lu-17110106
Lu-17210106
Lu-173102107
Lu-174102107
Lu-174m102107
Lu-176102106
Lu-176m103106
Lu-177103107
Lu-177m10106
Lu-178102105
Lu-178m10105
Lu-179103106
Hf-170102106
Hf-172*10106
Hf-173102106
Hf-175102106
Hf-177m10105
Hf-178m10106
Hf-179m10106
Hf-180m10106
Hf-18110106
Hf-182102106
Hf-182m10106
Hf-18310106
Hf-184102106
Ta-17210106
Ta-17310106
Ta-17410106
Ta-17510106
Ta-17610106
Ta-177102107
Ta-17810106
Ta-179103107
Ta-18010106
Ta-180m103107
Ta-18210104
Ta-182m102106
Ta-183102106
Ta-18410106
Ta-185102105
Ta-18610105
W-176102106
W-17710106
W-178*10106
W-179102107
W-181103107
W-185104107
W-187102106
W-188*102105
Re-17710106
Re-17810106
Re-18110106
Re-18210106
Re-182m10106
Re-18410106
Re-184m102106
Re-186103106
Re-186m103107
Re-187106109
Re-188102105
Re-188m102107
Re-189*102106
Os-180102107
Os-18110106
Os-182102106
Os-18510106
Os-189m104107
Os-191102107
Os-191m103107
Os-193102106
Os-194102105
Ir-18210105
Ir-18410106
Ir-18510106
Ir-18610106
Ir-186m10106
Ir-187102106
Ir-18810106
Ir-189*102107
Ir-19010106
Ir-190m (3,1 h)10106
Ir-190m' (1,2 h)104107
Ir-19210104
Ir-192m102107
Ir-193m104107
Ir-194102105
Ir-194m10106
Ir-195102106
Ir-195m102106
Pt-18610106
Pt-188*10106
Pt-189102106
Pt-191102106
Pt-193104107
Pt-193m103107
Pt-195m102106
Pt-197103106
Pt-197m102106
Pt-199102106
Pt-200102106
Au-193102107
Au-19410106
Au-195102107
Au-198102106
Au-198m10106
Au-199102106
Au-200102105
Au-200m10106
Au-201102106
Hg-193102106
Hg-193m10106
Hg-194*10106
Hg-195102106
Hg-195m*102106
Hg-197102107
Hg-197m102106
Hg-199m102106
Hg-203102105
Tl-19410106
Tl-194m10106
Tl-19510106
Tl-197102106
Tl-19810106
Tl-198m10106
Tl-199102106
Tl-20010106
Tl-201102106
Tl-202102106
Tl-204104104
Pb-195m10106
Pb-198102106
Pb-19910106
Pb-200102106
Pb-20110106
Pb-202103106
Pb-202m10106
Pb-203102106
Pb-205104107
Pb-209105106
Pb-210*10104
Pb-211102106
Pb-212*10105
Pb-214102106
Bi-20010106
Bi-20110106
Bi-20210106
Bi-20310106
Bi-20510106
Bi-20610105
Bi-20710106
Bi-210103106
Bi-210m*10105
Bi-212*10105
Bi-213102106
Bi-21410105
Po-20310106
Po-20510106
Po-20610106
Po-20710106
Po-20810104
Po-20910104
Po-21010104
At-20710106
At-211103107
Fr-222103105
Fr-223102106
Rn-220*104107
Rn-222*10108
Ra-223*102105
Ra-224*10105
Ra-225102105
Ra-226*10104
Ra-227102106
Ra-228*10105
Ac-224102106
Ac-225*10104
Ac-226102105
Ac-227*0,1103
Ac-22810106
Th-226*103107
Th-22710104
Th-228*1104
Th-229*1103
Th-2301104
Th-231103107
Th-23210104
Thpřír1103
Th-234*103105
Pa-22710106
Pa-22810106
Pa-23010106
Pa-2311103
Pa-23210106
Pa-233102107
Pa-23410106
U-230*10105
U-231102107
U-232*1103
U-23310104
U-23410104
U-235*10104
U-23610104
U-237102106
U-238*10104
Upřír*1103
U-239102106
U-240103107
U-240*10106
Np-23210106
Np-233102107
Np-23410106
Np-235103107
Np-236102105
Np-236m103107
Np-237*1103
Np-238102106
Np-239102107
Np-24010106
Pu-234102107
Pu-235102107
Pu-23610104
Pu-237103107
Pu-2381104
Pu-2391104
Pu-2401103
Pu-241102105
Pu-2421104
Pu-243103107
Pu-2441104
Pu-245102106
Pu-246102106
Am-237102106
Am-23810106
Am-239102106
Am-24010106
Am-2411104
Am-242103106
Am-242m*1104
Am-243*1103
Am-24410106
Am-244m104107
Am-245103106
Am-24610105
Am-246m10106
Cm-238102107
Cm-240102105
Cm-241102106
Cm-242102105
Cm-2431104
Cm-24410104
Cm-2451103
Cm-2461103
Cm-2471104
Cm-2481103
Cm-249103106
Cm-2500,1103
Bk-245102106
Bk-24610106
Bk-2471104
Bk-249103106
Bk-25010106
Cf-244104107
Cf-246103106
Cf-24810104
Cf-2491103
Cf-25010104
Cf-2511103
Cf-25210104
Cf-253102105
Cf-2541103
Es-250102106
Es-251102107
Es-253102105
Es-25410104
Es-254m102106
Fm-252103106
Fm-253102106
Fm-254104107
Fm-255103106
Fm-25710105
Md-257102107
Md-258102105

Vysvětlivky:
Za malé množství radioaktivní látky se považuje množství menší než 1 tuna.
Hodnoty hmotnostní aktivity a aktivity u nuklidů označených * (mateřské nuklidy) zahrnují i produkty jejich rozpadu (dceřiné nuklidy) s nimiž jsou v radioaktivní rovnováze.
Dceřiné nuklidy v radioaktivní rovnováze s mateřským nuklidem se samostatně neposuzují.
Mateřské nuklidy a příslušné dceřiné nuklidy v radioaktivní rovnováze
Mateřský nuklidDceřiné nuklidy
Ge-68Ga-68
Rb-83Kr-83m
Sr-82Rb-82
Sr-90Y-90
Y-87Sr-87m
Zr-93Nb-93m
Zr-97Nb-97
Mo-99Tc-99m
Ru-106Rh-106
Ag-108mAg-108
Sn-121mSn-121 (0,776)
Sn-126Sb-126m
Xe-122I-122
Cs-137Ba-137m
Ba-140La-140
Ce-134La-134
Ce-144Pr-144
Gd-146Eu-146
Hf-172Lu-172
W-178Ta-178
W-188Re-188
Re-189Os-189m (0,241)
Ir-189Os-189m
Pt-188Ir-188
Hg-194Au-194
Hg-195mHg-195 (0,542)
Pb-210Bi-210, Po-210
Pb-212Bi-212, Tl-208 (0,36), Po-212 (0,64)
Bi-210mTl-206
Bi-212Tl-208 (0,36), Po-212 (0,64)
Rn-220Po-216
Rn-222Po-218, Pb-214, Bi-214, Po-214
Ra-223Rn-219, Po-215, Pb-211, Bi-211, Tl-207
Ra-224Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0,36), Po-212 (0,64)
Ra-226Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
Ra-228Ac-228
Ac-225Fr-221, At-217, Bi-213, Po-213 (0,978), Tl-209 (0,0216), Pb-209 (0,978)
Ac-227Fr-223 (0,0138)
Th-226Ra-222, Rn-218, Po-214
Th-228Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0,36), Po-212 (0,64)
Th-229Ra-225, Ac-225, Fr-221, At-217, Bi-213, Po-213, Pb-209
ThpřírRa-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0,36), Po-212 (0,64)
Th-234Pa-234m
U-230Th-226, Ra-222, Rn-218, Po-214
U-232Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0,36), Po-212 (0,64)
U-235Th-231
U-238Th-234, Pa-234m
UpřírTh-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-240Np-240m
Np-237Pa-233
Am-242mAm-242
Am-243Np-239

Uvolňovací úrovně plošné aktivity pro povrchovou kontaminaci předmětů
Typ radionuklidového zdrojePlošná aktivita
[Bq/cm2]
Radionuklidové zdroje vyzařující záření beta nebo gama a nízce toxické radionuklidové zdroje emitující záření alfa0,4
Ostatní radionuklidové zdroje emitující záření alfa0,04

Vysvětlivky:
Nízce toxické radionuklidové zdroje emitující záření alfa jsou:

1. přírodní uran, ochuzený uran, přírodní thorium, Th-228, Th-230, Th-232, U-235 a U-238 obsažené v rudách nebo chemických koncentrátech, nebo

2. radionuklidový zdroj emitující záření alfa s poločasem přeměny menším než deset dní.