Chapter DHS 157
APPENDIX P
Quantities of Radioactive Materials Requiring Consideration of the
Need for a Contingency Plan for Responding to a Release
Radioactive Material1/   Release Fraction   Quantity (GBq)   Quantity (Ci)
Actinium-228   0.001   148,000   4,000
Americium-241   0.001   74   2
Americium-242   0.001   74   2
Americium-243   0.001   74   2
Antimony-124   0.01   148,000   4,000
Antimony-126   0.01   222,000   6,000
Barium-133   0.01   370,000   10,000
Barium-140   0.01   1,110,000   30,000