Chapter DHS 157 Appendix F

Plutonium-243   1,000

Plutonium-244   0.001

Plutonium-245   100

Americium-237   1,000

Americium-238   100

Americium-239   1,000

Americium-240   100

Americium-241   0.001

Americium-242m   0.001

Americium-242   10

Americium-243   0.001

Americium-244m   100

Americium-244   10

Americium-245   1,000

Americium-246m   1,000

Americium-246   1,000

Curium-238   100

Curium-240   0.1

Curium-241   1

Radionuclide   Microcuries   Radionuclide   Microcuries

- See PDF for diagram

Curium-242   0.01

Curium-243   0.001

Curium-244   0.001

Curium-245   0.001

Curium-246   0.001

Curium-247   0.001

Curium-248   0.001

Curium-249   1,000

Berkelium-245   100

Berkelium-246   100

Berkelium-247   0.001

Berkelium-249   0.1

Berkelium-250   10

Californium-244   100

Californium-246   1

Californium-248   0.01

Californium-249   0.001

Californium-250   0.001

Californium-251   0.001

Californium-252   0.001

Californium-253   0.1

Californium-254   0.001

Einsteinium-250   100

Einsteinium-251   100

Einsteinium-253   0.1

Einsteinium-254m   1

Einsteinium-254   0.01

Fermium-252   1

Fermium-253   1

Fermium-254   10

Fermium-255   1

Fermium-257   0.01

Mendelevium-257   10

Mendelevium-258   0.01

Any alpha-emitting radionuclide not listed above or mixtures
of alpha emitters of unknown composition   0.001

Any radionuclide other than alpha-emitting radionuclides not listed
above, or mixtures of beta emitters of unknown composition   0.01

- See PDF for diagram

Note: For purposes of s. DHS 157.29 (2) (e), (5) (a) and s. DHS 157.32 (1) (a) where there is involved a combination of radionuclides in known amounts, the limit for the combination shall be derived as follows: determine, for each radionuclide in the combination, the ratio between the quantity present in the combination and the limit otherwise established for the specific radionuclide when not in combination. The sum of such ratios for all radionuclides in the combination may not exceed “1” — that is, unity.

Note: The quantities listed above were derived by taking 1/10th of the most restrictive ALI listed in Table I, Columns 1 and 2, of Appendix E, rounding to the nearest factor of 10 and constraining the values listed between 37 Bq and 37 MBq (0.001 and 1,000 microcuries). Values of 3.7 MBq (100 microcuries have been assigned for radionuclides having a radioactive half-life in excess of E+9 years, except rhenium, 37 MBq (1,000 microcuries, to take into account their low specific activity.