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