296 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 Re-189 a 3 0.6 1 x 10² 1 x 10⁶ Re (natural) Unlimited Unlimited 1 x 10⁶ 1 x 10⁹ Rh-99 Rhodium (45) 2 2 1 x 10¹ 1 x 10⁶ Rh-101 4 3 1 x 10² 1 x 10⁷ Rh-102 0.5 0.5 1 x 10¹ 1 x 10⁶ Rh-102m 2 2 1 x 10² 1 x 10⁶ Rh-103m 40 40 1 x 10⁴ 1 x 10⁸ Rh-105 10 0.8 1 x 10² 1 x 10⁷ Rn-222 a Radon (86) 0.3 0.004 1 x 10^1b 1 x 10^8b Ru-97 Ruthenium (44) 5 5 1 x 10² 1 x 10⁷ Ru-103 a 2 2 1 x 10² 1 x 10⁶ Ru-105 1 0.6 1 x 10¹ 1 x 10⁶ Ru-106 a 0.2 0.2 1 x 10^2b 1 x 10^5b S-35 Sulphur (16) 40 3 1 x 10⁵ 1 x 10⁸ Sb-122 Antimony (51) 0.4 0.4 1 x 10² 1 x 10⁴ Sb-124 0.6 0.6 1 x 10¹ 1 x 10⁶ Sb-125 2 1 1 x 10² 1 x 10⁶ Sb-126 0.4 0.4 1 x 10¹ 1 x 10⁵ Sc-44 Scandium (21) 0.5 0.5 1 x 10¹ 1 x 10⁵ Sc-46 0.5 0.5 1 x 10¹ 1 x 10⁶ Sc-47 10 0.7 1 x 10² 1 x 10⁶ Sc-48 0.3 0.3 1 x 10¹ 1 x 10⁵ SCO Note 3 Note 3 Se-75 Selenium (34) 3 3 1 x 10² 1 x 10⁶ Se-79 40 2 1 x 10⁴ 1 x 10⁷ Si-31 Silicon (14) 0.6 0.6 1 x 10³ 1 x 10⁶ Si-32 40 0.5 1 x 10³ 1 x 10⁶ Sm-145 Samarium (62) 10 10 1 x 10² 1 x 10⁷ Sm-147 Unlimited Unlimited 1 x 10¹ 1 x 10⁴ Sm-151 40 10 1 x 10⁴ 1 x 10⁸ Sm-153 9 0.6 1 x 10² 1 x 10⁶ Sn-113^a Tin (50) 4 2 1 x 10³ 1 x 10⁷ Sn117m 7 0.4 1 x 10² 1 x 10⁶ Sn-119m 40 30 1 x 10³ 1 x 10⁷ Sn-121m^a 40 0.9 1 x 10³ 1 x 10⁷ Sn-123 0.8 0.6 1 x 10³ 1 x 10⁶ Sn-125 0.4 0.4 1 x 10² 1 x 10⁵ Sn-126^a 0.6 0.4 1 x 10¹ 1 x 10⁵ Sr-82^a Strontium (38) 0.2 0.2 1 x 10¹ 1 x 10⁵ Sr-85 5 5 1 x 10² 1 x 10⁷ Sr-85m 2 2 1 x 10² 1 x 10⁶ Sr-87m 3 3 1 x 10² 1 x 10⁶ Sr-89 0.6 0.6 1 x 10³ 1 x 10⁶ Sr-90 a 0.3 0.3 1 x 10^2b 1 x 10^4b Sr-91 a 0.3 0.3 1 x 10¹ 1 x 10⁵