R.C.S.A. § 19-24 Appendix A

Quantities of Radioactive Materials Exempted from Registration Requirements Materials in Sealed Sources Radioactive materials in sealed sources not exceeding 1 millicurie for a given installation. Materials Not in Sealed Sources 1. Not more than 1 microcurie total quantity of any one or any combination of the following: Pb210, Ra226, Ac227, Pu239, Am241, Cm242, Po210, At211, U233 2. Not more than 10 microcuries total quantity of any one or any combination of the following: Sc46, Co60, Sr90, Ag105, Ru106, Te129, I131, Cs137, Ce144, Eu154, W181, Re183, Ir192 3. Not more than 100 microcuries total quantity of any one or any combination of the following: P32, C136, Ca45, Sc47, Sc48, V48, Fe59, Zn65, Ga72, As76, Rb86, Sr89, Y91, Nb95, Tc96, Rh105, Cd109, Ag111, Sn113, Te127, Ba140, La140, Pr143, Sm151, Ho166, Tm170, Lu177, Ta182, Pt191, Pt193, Au198, Au199, Tl200, Pb203, Tl204, Th234 4. Not more than 1,000 microcuries total quantity of any one or any combination of the following: H3, Be7, C14, Na24, S35, K42, Cr51, Fe55, Mn56, Ni59, Gu64, Ge71, Mo99, Pd103, Pm147, Ir190, Au196, Tl201, Tl202; natural uranium; natural thorium. 5. Not more than 10 microcuries of any one or of any combination of any radioactive materials not specified above.