United States Nuclear Regulatory Commission - Protecting People and the Environment

Protactinium-232

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)
91 Protactinium-232 W, see 227Pa 1E+3 2E+1
Bone Surf
9E-9 - 2E-5 2E-4
- (6E+1) - 8E-11 - -
Y, see 227Pa - 6E+1
Bone Surf
2E-8 - - -
- (7E+1) - 1E-10 - -
Page Last Reviewed/Updated Thursday, July 10, 2014