United States Nuclear Regulatory Commission - Protecting People and the Environment

Iridium-189

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)
77 Iridium-189 D, see 182Ir 5E+3
LLI wall
5E+3 2E-6 7E-9 - -
(5E+3) - - - 7E-5 7E-4
W, see 182Ir - 4E+3 2E-6 5E-9 - -
Y, see 182Ir - 4E+3 1E-6 5E-9 - -
Page Last Reviewed/Updated Thursday, July 10, 2014