United States Nuclear Regulatory Commission - Protecting People and the Environment

Radium-225

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)
88 Radium-225 W, all compounds 8E+0
Bone Surf
7E-1 3E-10 9E-13 - -
(2E+1) - - - 2E-7 2E-6
Page Last Reviewed/Updated Thursday, July 10, 2014