United States Nuclear Regulatory Commission - Protecting People and the Environment

Cobalt-58m

Atomic
No.
Radionuclide Class Table 1
Occupational Values
Table 2
Effluent Concentrations
Table 3
Releases to
Sewers
Col. 1 Col. 2 Col. 3 Col. 1 Col. 2
Oral
Ingestion
ALI
(µCi)
Inhalation Air
(µCi/ml)
Water
(µCi/ml)
Monthly
Average
Concentration
(µCi/ml)
ALI
(µCi)
DAC
(µCi/ml)
27 Cobalt-58m W, see 55Co 6E+4 9E+4 4E-5 1E-7 8E-4 8E-3
Y, see 55Co - 6E+4 3E-5 9E-8 - -
Page Last Reviewed/Updated Thursday, July 10, 2014