SCHEDULE 2 Specified Quantities of Radionuclides on Premises
Regulation 3(1) and (2)

Part I Table of Radionuclides
Radionuclide name, symbol	Radionuclide form	Quantity (Bq)
Actinium
Ac-224		2 1011
Ac-225		3 109
Ac-226		2 1010
Ac-227		4 107
Ac-228		5 1011
Aluminium
Al-26		7 1010
Americium
Am-237		4 1012
Am-238		6 1012
Am-239		2 1012
Am-240		4 1012
Am-241		3 108
Am-242		1 1012
Am-242m		3 108
Am-243		3 108
Am-244		2 1012
Am-244m		2 1014
Am-245		2 1012
Am-246		1 1012
Am-246m		2 1012
Antimony
Sb-115		2 1012
Sb-116		2 1012
Sb-116m		2 1012
Sb-117		1 1013
Sb-118m		7 1012
Sb-119		1 1013
Sb-120	(long lived isotope)	3 1012
Sb-120	(short lived isotope)	2 1012
Sb-122		2 1012
Sb-124		4 1011
Sb-124m		4 1012
Sb-125		4 1011
Sb-126		1 1012
Sb-126m		2 1012
Sb-127		2 1012
Sb-128	(long lived isotope)	2 1012
Sb-128	(short lived isotope)	1 1012
Sb-129		2 1012
Sb-130		1 1012
Sb-131		2 1012
Argon
Ar-37	(gas)	4 1017
Ar-39	(gas)	2 1016
Ar-41	(gas)	4 1013
Arsenic
As-69		7 1011
As-70		1 1012
As-71		3 1012
As-72		9 1011
As-73		8 1012
As-74		2 1012
As-76		9 1011
As-77		2 1012
As-78		7 1011
Astatine
At-207		4 1012
At-211		2 1011
Barium
Ba-126		2 1013
Ba-128		1 1013
Ba-131		6 1012
Ba-131m		3 1012
Ba-133		4 1011
Ba-133m		2 1012
Ba-135m		2 1012
Ba-139		1 1012
Ba-140		2 1012
Ba-141		1 1012
Ba-142		2 1012
Berkelium
Bk-245		3 1012
Bk-246		6 1012
Bk-247		3 108
Bk-249		2 1011
Bk-250		2 1012
Beryllium
Be-7		2 1013
Be-10		6 1011
Bismuth	
Bi-200		2 1012
Bi-201		2 1012
Bi-202		3 1012
Bi-203		4 1012
Bi-205		2 1012
Bi-206		2 1012
Bi-207		1 1011
Bi-210		2 1011
Bi-210m		6 109
Bi-212		7 1011
Bi-213		7 1011
Bi-214		1 1012
Bromine
Br-74		8 1011
Br-74m		6 1011
Br-75		2 1012
Br-76		1 1012
Br-77		4 1013
Br-80		1 1012
Br-80m		5 1012
Br-82		3 1012
Br-83		2 1012
Br-84		7 1011
Cadmium
Cd-104		1 1013
Cd-107		4 1012
Cd-109		2 1012
Cd-113		2 1011
Cd-113m		1 1011
Cd-115		2 1012
Cd-115m		2 1012
Cd-117		2 1012
Cd-117m		2 1012
Caesium
Cs-125		2 1012
Cs-127		1 1013
Cs-129		2 1013
Cs-130		2 1012
Cs-131		6 1013
Cs-132		9 1012
Cs-134		7 1010
Cs-134m		4 1012
Cs-135		9 1011
Cs-135m		8 1012
Cs-136		8 1011
Cs-137		1 1011
Cs-138		8 1011
Calcium
Ca-41		3 1013
Ca-45		3 1012
Ca-47		2 1012
Californium
Cf-244		2 1012
Cf-246		5 1010
Cf-248		2 109
Cf-249		3 108
Cf-250		7 108
Cf-251		3 108
Cf-252		1 109
Cf-253		2 1010
Cf-254		4 108
Carbon		
C-11		2 1012
C-11	(vapour)	1 1014
C-11	(dioxide gas)	1 1014
C-11	(monoxide gas)	1 1014
C-14		3 1012
C-14	(vapour)	4 1013
C-14	(dioxide gas)	3 1015
C-14	(monoxide gas)	1 1016
Cerium
Ce-134		1 1013
Ce-135		2 1012
Ce-137		2 1013
Ce-137m		2 1012
Ce-139		2 1012
Ce-141		2 1012
Ce-143		2 1012
Ce-144		3 1011
Chlorine
Cl-36		2 1012
Cl-38		6 1011
Cl-39		1 1012
Chromium
Cr-48		4 1013
Cr-49		2 1012
Cr-51		3 1013
Cobalt
Co-55		2 1012
Co-56		2 1011
Co-57		1 1012
Co-58		6 1011
Co-58m		2 1013
Co-60		6 1010
Co-60m		7 1012
Co-61		2 1012
Co-62m		9 1011
Copper
Cu-60		1 1012
Cu-61		2 1012
Cu-64		4 1012
Cu-67		3 1012
Curium
Cm-238		5 1012
Cm-240		7 109
Cm-241		5 1011
Cm-242		4 109
Cm-243		4 108
Cm-244		4 108
Cm-245		2 108
Cm-246		2 108
Cm-247		3 108
Cm-248		7 107
Cm-249		2 1012
Cm-250		1 107
Dysprosium
Dy-155		1 1013
Dy-157		1 1014
Dy-159		8 1012
Dy-165		2 1012
Dy-166		3 1012
Einsteinium
Es-250		1 1013
Es-251		6 1012
Es-253		8 109
Es-254		2 109
Es-254m		5 1010
Erbium
Er-161		6 1012
Er-165		2 1014
Er-169		3 1012
Er-171		2 1012
Er-172		3 1012
Europium
Eu-145		4 1012
Eu-146		3 1012
Eu-147		4 1012
Eu-148		4 1011
Eu-149		8 1012
Eu-150	(long lived isotope)	1 1011
Eu-150	(short lived isotope)	2 1012
Eu-152		1 1011
Eu-152m		2 1012
Eu-154		1 1011
Eu-155		2 1012
Eu-156		2 1012
Eu-157		2 1012
Eu-158		1 1012
Fermium
Fm-252		7 1010
Fm-253		6 1010
Fm-254		3 1011
Fm-255		9 1010
Fm-257		3 109
Fluorine
F-18		2 1012
Francium
Fr-222		1 1012
Fr-223		2 1012
Gadolinium
Gd-145		2 1012
Gd-146		2 1012
Gd-147		5 1012
Gd-148		9 108
Gd-149		6 1012
Gd-151		5 1012
Gd-152		1 109
Gd-153		2 1012
Gd-159		2 1012
Gallium
Ga-65		1 1012
Ga-66		9 1011
Ga-67		5 1012
Ga-68		2 1012
Ga-70		1 1012
Ga-72		2 1012
Ga-73		2 1012
Germanium
Ge-66		3 1012
Ge-67		7 1011
Ge-68		1 1012
Ge-69		2 1012
Ge-71		7 1014
Ge-75		2 1012
Ge-77		1 1012
Ge-78		2 1012
Gold
Au-193		7 1012
Au-194		1 1013
Au-195		3 1012
Au-198		2 1012
Au-198m		2 1012
Au-199		3 1012
Au-200		1 1012
Au-200m		2 1012
Au-201		2 1012
Hafnium
Hf-170		4 1012
Hf-172		5 1011
Hf-173		6 1012
Hf-175		2 1012
Hf-177m		2 1012
Hf-178m		4 1010
Hf-179m		2 1012
Hf-180m		2 1012
Hf-181		1 1012
Hf-182		7 1010
Hf-182m		2 1012
Hf-183		2 1012
Hf-184		2 1012
Holmium
Ho-155		2 1012
Ho-157		4 1012
Ho-159		6 1012
Ho-161		1 1013
Ho-162		5 1012
Ho-162m		4 1012
Ho-164		2 1012
Ho-164m		4 1012
Ho-166		1 1012
Ho-166m		8 1010
Ho-167		2 1012
Hydrogen
H-3	(tritiated water)	7 1013
H-3	(organically bound tritium)	1 1014
H-3	(tritiated water vapour)	1 1015
H-3	(gas)	1 1018
H-3	(tritiated methane gas)	1 1017
H-3	(organically bound tritium gas/vapour)	6 1014
Indium
In-109		7 1012
In-110	(long lived isotope)	2 1013
In-110	(short lived isotope)	1 1012
In-111		9 1012
In-112		2 1012
In-113m		5 1012
In-114		1 1012
In-114m		9 1011
In-115		6 1010
In-115m		3 1012
In-116m		2 1012
In-117		2 1012
In-117m		2 1012
In-119m		9 1011
Iodine
I-120		6 1011
I-120	(elemental vapour)	2 1013
I-120	(methyl iodide vapour)	2 1013
I-120m		7 1011
I-120m	(elemental vapour)	2 1013
I-120m	(methyl iodide vapour)	2 1013
I-121		4 1012
I-121	(elemental vapour)	1 1014
I-121	(methyl iodide vapour)	1 1014
I-123		9 1012
I-123	(elemental vapour)	5 1013
I-123	(methyl iodide vapour)	6 1013
I-124		2 1012
I-124	(elemental vapour)	9 1011
I-124	(methyl iodide vapour)	1 1012
I-125		1 1011
I-125	(elemental vapour)	1 1012
I-125	(methyl iodide vapour)	1 1012
I-126		8 1011
I-126	(elemental vapour)	5 1011
I-126	(methyl iodide vapour)	6 1011
I-128		1 1012
I-128	(elemental vapour)	2 1014
I-128	(methyl iodide vapour)	5 1014
I-129		1 1010
I-129	(elemental vapour)	2 1011
I-129	(methyl iodide vapour)	2 1011
I-130		3 1012
I-130	(elemental vapour)	5 1012
I-130	(methyl iodide vapour)	6 1012
I-131		9 1010
I-131	(elemental vapour)	6 1011
I-131	(methyl iodide vapour)	7 1011
I-132		2 1012
I-132	(elemental vapour)	2 1013
I-132	(methyl iodide vapour)	3 1013
I-132m		2 1012
I-132m	(elemental vapour)	4 1013
I-132m	(methyl iodide vapour)	5 1013
I-133		2 1012
I-133	(elemental vapour)	2 1012
I-133	(methyl iodide vapour)	3 1012
I-134		2 1012
I-134	(elemental vapour)	3 1013
I-134	(methyl iodide vapour)	4 1013
I-135		2 1012
I-135	(elemental vapour)	9 1012
I-135	(methyl iodide vapour)	1 1013
Iridium
Ir-182		1 1012
Ir-184		2 1012
Ir-185		3 1012
Ir-186	(long lived isotope)	3 1012
Ir-186	(short lived isotope)	2 1012
Ir-187		6 1012
Ir-188		5 1012
Ir-189		9 1012
Ir-190		2 1012
Ir-190m	(long lived isotope)	3 1012
Ir-190m	(short lived isotope)	1 1013
Ir-192		6 1011
Ir-192m		4 1011
Ir-193m		4 1012
Ir-194		1 1012
Ir-194m		1 1011
Ir-195		2 1012
Ir-195m		2 1012
Iron
Fe-52		2 1012
Fe-55		8 1012
Fe-59		8 1011
Fe-60		4 1010
Krypton
Kr-74	(gas)	5 1013
Kr-76	(gas)	1 1014
Kr-77	(gas)	6 1013
Kr-79	(gas)	2 1014
Kr-81	(gas)	7 1015
Kr-81m	(gas)	5 1014
Kr-83m	(gas)	3 1016
Kr-85	(gas)	1 1016
Kr-85m	(gas)	4 1014
Kr-87	(gas)	7 1013
Kr-88	(gas)	3 1013
Lanthanum
La-131		2 1012
La-132		2 1012
La-135		2 1014
La-137		2 1012
La-138		2 1011
La-140		2 1012
La-141		1 1012
La-142		1 1012
La-143		7 1011
Lead
Pb-195m		2 1012
Pb-198		4 1012
Pb-199		6 1012
Pb-200		3 1012
Pb-201		8 1012
Pb-202		6 1011
Pb-202m		4 1012
Pb-203		9 1012
Pb-205		1 1013
Pb-209		2 1012
Pb-210		3 109
Pb-211		2 1012
Pb-212		1 1011
Pb-214		1 1012
Lutetium
Lu-169		6 1012
Lu-170		3 1012
Lu-171		4 1012
Lu-172		3 1012
Lu-173		2 1012
Lu-174		1 1012
Lu-174m		3 1012
Lu-176		3 1011
Lu-176m		2 1012
Lu-177		3 1012
Lu-177m		3 1011
Lu-178		1 1012
Lu-178m		1 1012
Lu-179		2 1012
Magnesium
Mg-28		5 1012
Manganese
Mn-51		1 1012
Mn-52		2 1012
Mn-52m		8 1011
Mn-53		1 1014
Mn-54		3 1011
Mn-56		1 1012
Mendelevium
Md-257		9 1011
Md-258		4 109
Mercury
Hg-193	(organic)	3 1012
Hg-193	(inorganic)	3 1012
Hg-193	(vapour)	2 1013
Hg-193m	(organic)	2 1012
Hg-193m	(inorganic)	2 1012
Hg-193m	(vapour)	6 1012
Hg-194	(organic)	3 1011
Hg-194	(inorganic)	1 1012
Hg-194	(vapour)	6 1011
Hg-195	(organic)	5 1012
Hg-195	(inorganic)	5 1012
Hg-195	(vapour)	1 1013
Hg-195m	(organic)	3 1012
Hg-195m	(inorganic)	3 1012
Hg-195m	(vapour)	3 1012
Hg-197	(organic)	7 1012
Hg-197	(inorganic)	7 1012
Hg-197	(vapour)	5 1012
Hg-197m	(organic)	2 1012
Hg-197m	(inorganic)	2 1012
Hg-197m	(vapour)	4 1012
Hg-199m	(organic)	2 1012
Hg-199m	(inorganic)	2 1012
Hg-199m	(vapour)	1 1014
Hg-203	(organic)	3 1012
Hg-203	(inorganic)	3 1012
Hg-203	(vapour)	3 1012
Molybdenum
Mo-90		2 1012
Mo-93		2 1012
Mo-93m		4 1012
Mo-99		2 1012
Mo-101		2 1012
Neodymium
Nd-136		4 1012
Nd-138		5 1013
Nd-139		2 1012
Nd-139m		3 1012
Nd-141		2 1013
Nd-147		2 1012
Nd-149		2 1012
Nd-151		1 1012
Neon
Ne-19	(gas)	6 1013
Neptunium
Np-232		3 1012
Np-233		2 1014
Np-234		5 1012
Np-235		2 1013
Np-236	(long lived isotope)	3 109
Np-236	(short lived isotope)	3 1012
Np-237		5 108
Np-238		2 1012
Np-239		1 1012
Np-240		7 1011
Nickel
Ni-56		4 1012
Ni-56	(carbonyl vapour)	1 1013
Ni-57		2 1012
Ni-57	(carbonyl vapour)	2 1013
Ni-59		4 1013
Ni-59	(carbonyl vapour)	2 1013
Ni-63		1 1013
Ni-63	(carbonyl vapour)	1 1013
Ni-65		1 1012
Ni-65	(carbonyl vapour)	4 1013
Ni-66		5 1012
Ni-66	(carbonyl vapour)	1 1013
Niobium
Nb-88		7 1011
Nb-89	(long lived isotope)	1 1012
Nb-89	(short lived isotope)	8 1011
Nb-90		2 1012
Nb-93m		1 1013
Nb-94		1 1011
Nb-95		2 1012
Nb-95m		2 1012
Nb-96		2 1012
Nb-97		2 1012
Nb-98		1 1012
Nitrogen
N-13	(gas)	6 1013
Osmium
Os-180		1 1013
Os-181		3 1012
Os-182		6 1012
Os-185		7 1011
Os-189m		1 1013
Os-191		4 1012
Os-191m		7 1012
Os-193		2 1012
Os-194		2 1011
Palladium
Pd-100		7 1012
Pd-101		8 1012
Pd-103		4 1013
Pd-107		3 1013
Pd-109		2 1012
Phosphorus
P-32		1 1011
P-33		3 1012
Platinum
Pt-186		9 1013
Pt-188		6 1012
Pt-189		6 1012
Pt-191		7 1012
Pt-193		1 1014
Pt-193m		3 1012
Pt-195m		3 1012
Pt-197		2 1012
Pt-197m		2 1012
Pt-199		2 1012
Pt-200		2 1012
Plutonium
Pu-234		1 1012
Pu-235		2 1013
Pu-236		6 108
Pu-237		1 1013
Pu-238		2 108
Pu-239		2 108
Pu-240		2 108
Pu-241		1 1010
Pu-242		2 108
Pu-243		2 1012
Pu-244		2 108
Pu-245		2 1012
Pu-246		2 1012
Polonium
Po-203		3 1012
Po-205		7 1012
Po-206		1 1011
Po-207		8 1012
Po-208		2 109
Po-209		2 109
Po-210		4 109
Potassium
K-40		2 1012
K-42		7 1011
K-43		2 1012
K-44		6 1011
K-45		9 1011
Praseodymium
Pr-136		1 1012
Pr-137		2 1012
Pr-138m		2 1012
Pr-139		7 1012
Pr-142		1 1012
Pr-142m		2 1015
Pr-143		2 1012
Pr-144		2 1012
Pr-145		1 1012
Pr-147		1 1012
Promethium
Pm-141		1 1012
Pm-143		9 1011
Pm-144		2 1011
Pm-145		3 1012
Pm-146		2 1011
Pm-147		4 1012
Pm-148		1 1012
Pm-148m		5 1011
Pm-149		2 1012
Pm-150		1 1012
Pm-151		2 1012
Protactinium
Pa-227		3 1011
Pa-228		3 1011
Pa-230		3 1010
Pa-231		2 108
Pa-232		2 1012
Pa-233		2 1012
Pa-234		5 1011
Radium
Ra-223		3 109
Ra-224		7 109
Ra-225		3 109
Ra-226		2 109
Ra-227		2 1012
Ra-228		1 109
Rhenium
Re-177		2 1012
Re-178		2 1012
Re-181		3 1012
Re-182	(long lived isotope)	2 1012
Re-182	(short lived isotope)	4 1012
Re-184		1 1012
Re-184m		7 1011
Re-186		2 1012
Re-186m		1 1012
Re-187		5 1014
Re-188		1 1012
Re-188m		3 1012
Re-189		2 1012
Rhodium
Rh-99		4 1012
Rh-99m		9 1012
Rh-100		4 1012
Rh-101		7 1011
Rh-101m		2 1013
Rh-102		1 1011
Rh-102m		6 1011
Rh-103m		3 1015
Rh-105		2 1012
Rh-106m		2 1012
Rh-107		2 1012
Rubidium
Rb-79		1 1012
Rb-81		2 1012
Rb-81m		4 1012
Rb-82m		3 1012
Rb-83		1 1012
Rb-84		1 1012
Rb-86		2 1011
Rb-87		4 1012
Rb-88		5 1011
Rb-89		9 1011
Ruthenium
Ru-94		1 1014
Ru-94	(tetroxide vapour)	1 1014
Ru-97		3 1013
Ru-97	(tetroxide vapour)	1 1014
Ru-103		2 1012
Ru-103	(tetroxide vapour)	1 1013
Ru-105		2 1012
Ru-105	(tetroxide vapour)	6 1013
Ru-106		3 1011
Ru-106	(tetroxide vapour)	8 1011
Samarium
Sm-141		1 1012
Sm-141m		2 1012
Sm-142		9 1012
m-145		3 1012
Sm-146		2 109
Sm-147		3 109
Sm-151		6 1012
Sm-153		2 1012
Sm-155		2 1012
Sm-156		2 1012
Scandium
Sc-43		2 1012
Sc-44		2 1012
Sc-44m		9 1012
Sc-46		3 1011
Sc-47		3 1012
Sc-48		2 1012
Sc-49		1 1012
Selenium
Se-70		2 1012
Se-73		2 1012
Se-73m		2 1012
Se-75		2 1011
Se-79		5 1010
Se-81		2 1012
Se-81m		4 1012
Se-83		2 1012
Silicon
Si-31		2 1012
Si-32		2 1011
Silver
Ag-102		1 1012
Ag-103		2 1012
Ag-104		3 1012
Ag-104m		2 1012
Ag-105		2 1012
Ag-106		2 1012
Ag-106m		2 1012
Ag-108m		1 1011
Ag-110m		3 1010
Ag-111		2 1012
Ag-112		7 1011
Ag-115		9 1011
Sodium
Na-22		1 1011
Na-24		2 1012
Strontium
Sr-80		1 1014
Sr-81		9 1011
Sr-82		2 1012
Sr-83		3 1012
Sr-85		1 1012
Sr-85m		3 1013
Sr-87m		7 1012
Sr-89		1 1012
Sr-90		8 1010
Sr-91		2 1012
Sr-92		2 1012
Sulphur
S-35	(inorganic)	1 1012
S-35	(organic)	2 1011
S-35	(carbon disulphide vapour)	2 1013
S-35	(vapour)	2 1014
S-35	(dioxide gas)	1 1014
Tantalum
Ta-172		2 1012
Ta-173		2 1012
Ta-174		2 1012
Ta-175		2 1012
Ta-176		3 1012
Ta-177		1 1013
Ta-178	(long lived isotope)	3 1012
Ta-179		6 1012
Ta-180		9 1011
Ta-180m		6 1012
Ta-182		3 1011
Ta-182m		2 1012
Ta-183		2 1012
Ta-184		2 1012
Ta-185		1 1012
Ta-186		9 1011
Technetium
Tc-93		5 1013
Tc-93m		4 1012
Tc-94		6 1012
Tc-94m		1 1012
Tc-95		4 1013
Tc-95m		1 1012
Tc-96		4 1012
Tc-96m		2 1013
Tc-97		9 1012
Tc-97m		5 1012
Tc-98		1 1011
Tc-99		5 1010
Tc-99m		1 1013
Tc-101		2 1012
Tc-104		6 1011
Tellurium
Te-116		6 1012
Te-116	(vapour)	2 1014
Te-121		4 1012
Te-121	(vapour)	3 1013
Te-121m		1 1012
Te-121m	(vapour)	3 1012
Te-123		6 1012
Te-123	(vapour)	2 1012
Te-123m		2 1012
Te-123m	(vapour)	5 1012
Te-125m		2 1012
Te-125m	(vapour)	8 1012
Te-127		2 1012
Te-127	(vapour)	2 1014
Te-127m		1 1012
Te-127m	(vapour)	2 1012
Te-129		2 1012
Te-129	(vapour)	4 1014
Te-129m		1 1012
Te-129m	(vapour)	3 1012
Te-131		1 1012
Te-131	(vapour)	1 1014
Te-131m		2 1012
Te-131m	(vapour)	5 1012
Te-132		3 1012
Te-132	(vapour)	2 1012
Te-133		1 1012
Te-133	(vapour)	7 1013
Te-133m		1 1012
Te-133m	(vapour)	2 1013
Te-134		3 1012
Te-134	(vapour)	7 1013
Terbium
Tb-147		2 1012
Tb-149		2 1012
Tb-150		2 1012
Tb-151		4 1012
Tb-153		7 1012
Tb-154		4 1012
Tb-155		1 1013
Tb-156		3 1012
Tb-156m	(long lived isotope)	1 1013
Tb-156m	(short lived isotope)	4 1012
Tb-157		1 1013
Tb-158		2 1011
Tb-160		5 1011
Tb-161		2 1012
Thallium
Tl-194		1 1013
Tl-194m		2 1012
Tl-195		4 1012
Tl-197		5 1012
Tl-198		7 1012
Tl-198m		2 1012
Tl-199		6 1012
Tl-200		1 1013
Tl-201		7 1012
Tl-202		7 1012
Tl-204		2 1012
Thorium
Th-226		4 1011
Th-227		2 109
Th-228		6 108
Th-229		1 108
Th-230		2 108
Th-231		2 1012
Th-232		2 108
Th-234		3 1012
Thulium
Tm-162		2 1012
Tm-166		3 1012
Tm-167		4 1012
Tm-170		2 1012
Tm-171		1 1013
Tm-172		2 1012
Tm-173		2 1012
Tm-175		2 1012
Tin
Sn-110		6 1013
Sn-111		2 1012
Sn-113		5 1012
Sn-117m		3 1012
Sn-119m		5 1012
Sn-121		3 1012
Sn-121m		4 1012
Sn-123		2 1012
Sn-123m		2 1012
Sn-125		1 1012
Sn-126		5 1011
Sn-127		2 1012
Sn-128		2 1012
Titanium
Ti-44		2 1011
Ti-45		2 1012
Tungsten
W-176		5 1012
W-177		3 1012
W-178		6 1013
W-179		1 1013
W-181		1 1013
W-185		4 1012
W-187		2 1012
W-188		3 1012
Uranium
U-230		2 109
U-231		7 1012
U-232		6 108
U-233		3 109
U-234		3 109
U-235		3 109
U-236		3 109
U-237		2 1012
U-238		3 109
U-239		2 1012
U-240		2 1012
Vanadium
V-47		1 1012
V-48		1 1012
V-49		2 1014
Xenon
Xe-120	(gas)	1 1014
Xe-121	(gas)	3 1013
Xe-122	(gas)	1 1015
Xe-123	(gas)	9 1013
Xe-125	(gas)	2 1014
Xe-127	(gas)	2 1014
Xe-129m	(gas)	2 1015
Xe-131	(gas)	4 1015
Xe-133	(gas)	1 1015
Xe-133m	(gas)	2 1015
Xe-135	(gas)	2 1014
Xe-135m	(gas)	1 1014
Xe-138	(gas)	5 1013
Ytterbium
Yb-162		1 1013
Yb-166		8 1012
Yb-167		4 1012
Yb-169		3 1012
Yb-175		4 1012
Yb-177		2 1012
Yb-178		2 1012
Yttrium
Y-86		2 1012
Y-86m		1 1013
Y-87		2 1013
Y-88		2 1011
Y-90		2 1012
Y-90m		7 1012
Y-91		2 1012
Y-91m		2 1013
Y-92		6 1011
Y-93		8 1011
Y-94		6 1011
Y-95		6 1011
Zinc
Zn-62		1 1013
Zn-63		1 1012
Zn-65		5 1010
Zn-69		2 1012
Zn-69m		2 1013
Zn-71m		2 1012
Zn-72		3 1012
Zirconium
Zr-86		2 1013
Zr-88		1 1012
Zr-89		4 1012
Zr-93		8 1011
Zr-95		8 1011
Zr-97		2 1012
Other radionuclides not listed above (see note)		4 107
Note: In the case of radionuclides not specified elsewhere in this Part, the quantity specified in this entry is to be used unless the Executive has approved some other quantity for that radionuclide.		

Part II Quantity ratios for more than one radionuclide
1 For the purpose of regulation 3(2), the quantity ratio for more than one radionuclide is the sum of the quotients of the quantity of a radionuclide present Qp divided by the quantity of that radionuclide specified in the appropriate column of Part I Qlim, namely—
ΣQpQlim
2 In any case where the isotopic composition of a radioactive substance is not known or is only partially known, the quantity ratio for that substance shall be calculated by using the values specified in the appropriate column in Part I for ‘other radionuclides not listed above’ for any radionuclide that has not been identified or where the quantity of a radionuclide is uncertain, unless the employer can show that the use of some other value is appropriate in the circumstances of a particular case, when he may use that value.