294 AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3 11 DECEMBER 2001 Symbol of Radionuclide Element and Atomic Number ^A1^(TBq) (Special form) ^A2^(TBq) (Other form) Activity concentration for exempt material Activity limit for an exempt consignment MFP Mixed fission products Note 1 Note 1 Mg-28^a Magnesium (12) 0.3 0.3 1 x 10¹ 1 x 10⁵ Mn-52 Manganese (25) 0.3 0.3 1 x 10¹ 1 x 10⁵ Mn-53 Unlimited Unlimited 1 x 10⁴ 1 x 10⁹ Mn-54 1 1 1 x 10¹ 1 x 10⁶ Mn-56 0.3 0.3 1 x 10¹ 1 x 10⁵ Mo-93 Molybdenum (42) 40 20 1 x 10³ 1 x 10⁸ Mo-99^a 1 0.6 1 x 10² 1 x 10⁶ N-13 Nitrogen (7) 0.9 0.6 1 x 10² 1 x 10⁹ Na-22 Sodium (11) 0.5 0.5 1 x 10¹ 1 x 10⁶ Na-24 0.2 0.2 1 x 10¹ 1 x 10⁵ Nb-93m Niobium (41) 40 30 1 x 10⁴ 1 x 10⁷ Nb-94 0.7 0.7 1 x 10¹ 1 x 10⁶ Nb-95 1 1 1 x 10¹ 1 x 10⁶ Nb-97 0.9 0.6 1 x 10¹ 1 x 10⁶ Nd-147 Neodymium (60) 6 0.6 1 x 10² 1 x 10⁶ Nd-149 0.6 0.5 1 x 10² 1 x 10⁶ Ni-59 Nickel (28) Unlimited Unlimited 1 x 10⁴ 1 x 10⁸ Ni-63 40 30 1 x 10⁵ 1 x 10⁸ Ni-65 0.4 0.4 1 x 10¹ 1 x 10⁶ Np-235 Neptunium (93) 40 40 1 x 10³ 1 x 10⁷ Np-236 (short lived) 20 2 1 x 10³ 1 x 10⁷ Np-236 (long lived) 9 0.02 1 x 10² 1 x 10⁵ Np-237 20 0.002 1 x 10^0b 1 x 10^3b Np-239 7 0.4 1 x 10² 1 x 10⁷ Os-185 Osmium (76) 1 1 1 x 10¹ 1 x 10⁶ Os-191 40 30 1 x 10³ 1 x 10⁷ Os-191m 10 2 1 x 10² 1 x 10⁷ Os-193 2 0.6 1 x 10² 1 x 10⁶ Os-194^a 0.3 0.3 1 x 10² 1 x 10⁵ P-32 Phosphorus (15) 0.5 0.5 1 x 10³ 1 x 10⁵ P-33 40 1 1 x 10⁵ 1 x 10⁸ Pa-230^a   Protactinium (91) 2 0.07 1 x 10¹ 1 x 10⁶ Pa-231 4 0.0004 1 x 10⁰ 1 x 10³ Pa-233 5 0.7 1 x 10² 1 x 10⁷ Pb-201 Lead (82) 1 1 1 x 10¹ 1 x 10⁶ Pb-202 40 20 1 x 10³ 1 x 10⁶ Pb-203 4 3 1 x 10² 1 x 10⁶ Pb-205 Unlimited Unlimited 1 x 10⁴ 1 x 10⁷ Pb-210^a 1 0.05 1 x 10^1b 1 x 10^4b Pb-212 a 0.7 0.2 1 x 10^1b 1 x 10^5b