United States Nuclear Regulatory Commission - Protecting People and the Environment

Promethium-141

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)
61 Promethium-1412 W, all compounds except
those given for Y
5E+4
St. wall
2E+5 8E-5 3E-7 - -
(6E+4) - - - 8E-4 8E-3
Y, oxides, hydroxides, carbides, and fluorides - 2E+5 7E-5 2E-7 - -
Page Last Reviewed/Updated Thursday, July 10, 2014