United States Nuclear Regulatory Commission - Protecting People and the Environment

Hafnium-178m

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-178m D, see 170Hf 3E+2 1E+0
Bone surf
5E-10 - 3E-6 3E-5
- (2E+0) - 3E-12 - -
W, see 170Hf - 5E+0
Bone surf
2E-9 - - -
- (9E+0) - 1E-11 - -
Page Last Reviewed/Updated Thursday, July 10, 2014