Princípios de Segurança e Proteção Radiológica, Terceira ... - Cnen

Tabela 6.2 Valores Básicos de Limites de Atividade e Concentração em
Embalados Tipo A para alguns Radionuclídeos
Radionuclídeo
A 1 A 2
Concentração
em Atividade
para material
exceptivo
Limite de
Atividade para
uma consignação
exceptiva
(TBq) (TBq) (Bq/g) (Bq)
Am-241 1 × 10 1 1 × 10 -3 1 × 10 0 1 × 10 4
C-14 4 × 10 1 3 × 10 0 1 × 10 4 1 × 10 7
Ca-45 4 × 10 1 1 × 10 0 1 × 10 4 1 × 10 7
Cf-252 5 × 10 -2 3 × 10 -3 1 × 10 1 1 × 10 4
Cl-36 1 × 10 1 6 × 10 -1 1 × 10 4 1 × 10 6
Co-57 1 × 10 1 1 × 10 1 1 × 10 2 1 × 10 6
Co-58 1 × 10 0 1 × 10 0 1 × 10 1 1 × 10 6
Co-58m 4 × 10 1 4 × 10 1 1 × 10 4 1 × 10 7
Co-60 4 × 10 -1 4 × 10 -1 1 × 10 1 1 × 10 5
Cr-51 3 × 10 1 3 × 10 1 1 × 10 3 1 × 10 7
Cs-137 (a) 2 × 10 0 6 × 10 -1 1 × 10 1 (b) 1 × 10 4 (b)
Fe-59 9 × 10 -1 9 × 10 -1 1 × 10 1 1 × 10 6
Ga-67 7 × 10 0 3 × 10 0 1 × 10 2 1 × 10 6
H-3 4 x 10 1 4 × 10 1 (b) -
I-125 2 × 10 1 3 × 10 0 1 × 10 3 1 × 10 6
I-131 3 × 10 0 7 × 10 -1 1 × 10 2 1 × 10 6
In-111 3 × 10 0 3 × 10 0 1 × 10 2 1 × 10 6
Ir-192 1 × 10 0 (c) 6 × 10 -1 1 × 10 1 1 × 10 4
Kr-85 1 × 10 1 1 × 10 1 1 × 10 5 1 × 10 4
Mo-99 (a) 1 × 10 0 6 × 10 -1 1 × 10 2 1 × 10 6
Na-22 5 × 10 -1 5 × 10 -1 1 × 10 1 1 × 10 6
Na-24 2 × 10 -1 2 × 10 -1 1 × 10 1 1 × 10 5
Ni-63 4 × 10 1 3 × 10 1 1 × 10 5 1 × 10 8
P-32 5 × 10 -1 5 × 10 -1 1 × 10 3 1 × 10 5
Pm-147 4 × 10 1 2 × 10 0 1 × 10 4 1 × 10 7
Po-210 4 × 10 1 2 × 10 -2 1 × 10 1 1 × 10 4
Pu-239 1 × 10 1 1 × 10 -3 1 × 10 0 1 × 10 4
Ra-226 (a) 2 × 10 -1 3 × 10 -3 1 × 10 1 (b) 1 × 10 4 (b)
S-35 4 × 10 1 3 × 10 0 1 × 10 5 1 × 10 8
Sc-46 5 × 10 -1 5 × 10 -1 1 × 10 1 1 × 10 6
Se-75 3 × 10 0 3 × 10 0 1 × 10 2 1 × 10 6
Tc-99m 1 × 10 1 4 × 10 0 1 × 10 2 1 × 10 7
Xe-133 2 × 10 1 1 × 10 1 1 × 10 3 1 × 10 4
Y-90 3 × 10 -1 3 × 10 -1 1 × 10 3 1 × 10 5
(a) Valores de A 1 e/ou A 2 incluem contribuições de nuclídeos filhos com
meia-vida inferior a 10 dias
(b) Ver Tabela 6.3
128