10 CFR Appendix E to Part 835, Values for Establishing Sealed Radioactive Source Accountability and Radioactive Material Posting and Labeling Requirements

prev | next
Appendix E to Part 835 - Values for Establishing Sealed Radioactive Source Accountability and Radioactive Material Posting and Labeling Requirements

The data presented in appendix E are to be used for identifying accountable sealed radioactive sources and radioactive material areas as those terms are defined at § 835.2(a), establishing the need for radioactive material area posting in accordance with § 835.603(g), and establishing the need for radioactive material labeling in accordance with § 835.605.

Nuclide Activity (µCi)
H-3 1.5E 08
Be-7 3.1E 03
Be-10 1.4E 05
C-14 4.6E 06
Na-22 1.9E 01
Al-26 1.5E 01
Si-32 4.9E 04
S-35 2.4E 06
Cl-36 5.2E 05
K-40 2.7E 02
Ca-41 9.3E 06
Ca-45 1.1E 06
Sc-46 6.2E 01
Ti-44 1.5E 02
V-49 1.0E 08
Mn-53 7.5E 07
Mn-54 6.5E 01
Fe-55 2.9E 06
Fe-59 1.9E 02
Fe-60 8.1E 03
Co-56 3.9E 01
Co-57 2.3E 02
Co-58 1.3E 02
Co-60 1.7E 01
Ni-59 3.2E 06
Ni-63 1.3E 06
Zn-65 1.1E 02
Ge-68 5.6E 02
As-73 5.3E 02
Se-75 6.3E 01
Se-79 8.7E 05
Rb-83 9.1E 01
Rb-84 2.0E 02
Sr-85 1.2E 02
Sr-89 4.8E 05
Sr-90 3.5E 04
Y-88 3.3E 01
Y-91 5.0E 04
Zr-88 1.1E 02
Zr-93 9.3E 04
Zr-95 1.9E 02
Nb-91 6.9E 01
Nb-91m 3.6E 02
Nb-92 1.8E 01
Nb-93m 4.4E 02
Nb-94 2.3E 01
Nb-95 3.4E 02
Mo-93 7.7E 01
Tc-95m 1.3E 02
Tc-97 8.1E 01
Tc-97m 3.5E 02
Tc-98 2.5E 01
Tc-99 8.4E 05
Ru-103 4.4E 02
Ru-106 2.5E 02
Rh-101 8.7E 05
Rh-102 3.0E 05
Rh-102m 6.4E 05
Pd-107 9.3E 06
Ag-105 3.3E 06
Ag-108m 1.8E 01
Ag-110m 2.2E 01
Cd-109 1.6E 02
Cd-113m 2.0E 04
Cd-115m 1.0E 04
In-114m 7.7E 02
Sn-113 3.1E 02
Sn-119m 3.3E 02
Sn-121m 8.1E 05
Sn-123 1.3E 04
Sn-126 1.8E 02
Sb-124 9.1E 01
Sb-125 6.7E 01
Te-121m 1.8E 02
Te-123m 2.8E 02
Te-125m 4.4E 02
Te-127m 8.0E 02
Te-129m 2.3E 03
I-125 3.5E 02
I-129 1.8E 02
Cs-134 2.6E 01
Cs-135 1.3E 06
Cs-137 6.0E 01
Ba-133 5.1E 01
La-137 2.7E 05
Ce-139 2.4E 02
Ce-141 2.4E 03
Ce-144 1.4E 03
Pm-143 1.3E 02
Pm-144 2.9E 01
Pm-145 2.6E 02
Pm-146 4.4E 01
Pm-147 7.7E 05
Pm-148m 1.0E 02
Sm-145 2.4E 06
Sm-146 4.0E 02
Sm-151 2.5E 05
Eu-148 1.1E 06
Eu-149 1.1E 07
Eu-152 3.1E 01
Eu-154 3.1E 01
Eu-155 3.6E 02
Gd-146 5.1E 05
Gd-148 9.0E 01
Gd-151 2.9E 06
Gd-153 2.1E 02
Tb-157 2.5E 03
Tb-158 9.0E 04
Tb-160 1.2E 02
Dy-159 1.0E 07
Ho-166m 2.1E 01
Tm-170 8.4E 03
Tm-171 2.8E 04
Yb-169 5.5E 02
Lu-173 1.8E 06
Lu-174 9.3E 05
Lu-174m 1.0E 06
Lu-177m 5.8E 01
Hf-172 7.3E 04
Hf-175 3.0E 06
Hf-178m 8.7E 03
Hf-181 3.4E 02
Hf-182 7.5E 03
Ta-179 9.3E 06
Ta-182 7.3E 01
W-181 1.0E 03
W-185 3.9E 06
W-188 6.3E 04
Re-183 5.3E 02
Re-184 2.6E 02
Re-184m 1.5E 02
Re-186m 3.4E 05
Os-185 1.3E 02
Os-194 6.4E 04
Ir-192 1.3E 02
Ir-192m 1.4E 05
Ir-194m 2.7E 01
Pt-193 8.7E 07
Au-195 4.8E 02
Hg-194 5.2E 04
Hg-203 4.9E 02
Tl-204 2.2E 04
Pb-202 1.9E 05
Pb-205 9.0E 01
Pb-210 9.2E 01
Bi-207 1.7E 01
Bi-208 1.5E 01
Bi-210m 1.2E 03
Po-209 6.3E 03
Po-210 1.2E 03
Ra-226 2.2E 02
Ra-228 1.5E 03
Ac-227 4.2E 00
Th-228 8.4E 01
Th-229 3.1E 01
Th-230 5.4E 00
Th-232 9.3E 01
Pa-231 3.0E 01
U-232 1.0E 02
U-233 3.9E 02
U-234 2.9E 02
U-235 6.7E 01
U-236 3.1E 02
U-238 3.5E 02
Np-235 1.1E 02
Np-236 2.1E 01
Np-237 4.9E 01
Pu-236 2.0E 02
Pu-237 3.3E 02
Pu-238 9.0E 01
Pu-239 8.4E 01
Pu-240 8.4E 01
Pu-241 4.6E 03
Pu-242 8.7E 01
Pu-244 9.0E 01
Am-241 7.2E 01
Am-242m 1.1E 02
Am-243 7.3E 01
Cm-241 1.0E 05
Cm-242 6.2E 02
Cm-243 4.8E 01
Cm-244 1.5E 02
Cm-245 5.0E 01
Cm-246 1.0E 02
Cm-247 8.5E 01
Cm-248 2.8E 01
Cm-250 5.4E 00
Bk-247 6.0E 01
Bk-249 2.7E 04
Cf-248 4.4E 02
Cf-249 5.5E 01
Cf-250 1.2E 02
Cf-251 5.3E 01
Cf-252 5.2E 00
Cf-254 1.2E 02
Es-254 6.3E 01
Es-255 8.8E 03
Fm-257 5.1E 02
Md-258 6.1E 02

Any alpha emitting radionuclide not listed in appendix E and mixtures of alpha emitters of unknown composition have a value of 10 µCi.

With the exception that any type of STC has a value of 10 Ci, any radionuclide other than alpha emitting radionuclides not listed in appendix E and mixtures of beta emitters of unknown composition have a value of 100 µCi.

Note:

Where there is involved a mixture of radionuclides in known amounts, derive the value for the mixture as follows: determine, for each radionuclide in the mixture, the ratio between the quantity present in the mixture and the value otherwise established for the specific radionuclide when not in the mixture. If the sum of such ratios for all radionuclides in the mixture exceeds unity (1), then the accountability criterion has been exceeded.

[ 72 FR 31940, June 8, 2007]

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code

Title 10 published on 10-May-2017 03:48

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR Part 835 after this date.

  • 2016-11-18; vol. 81 # 223 - Friday, November 18, 2016
    1. 81 FR 81701 - Occupational Radiation Protection
      GPO FDSys XML | Text
      DEPARTMENT OF ENERGY, Safety and Security, Office of Environment, Health
      Notice of proposed rulemaking.
      The comment period for this proposed rule will end on December 19, 2016.
      10 CFR Part 835