United States Nuclear Regulatory Commission - Protecting People and the Environment

Hafnium-172

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)
72 Hafnium-172 D, see 170Hf 1E+3 9E+0
Bone surf
4E-9 - 2E-5 2E-4
- (2E+1) - 3E-11 - -
W, see 170Hf - 4E+1
Bone surf
2E-8 - - -
- (6E+1) - - - -
Page Last Reviewed/Updated Thursday, July 25, 2013