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Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

Terbium-156m (24.4 h)

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)
65 Terbium-156m
(24.4 h)		 W, all compounds 7E+3 8E+3 3E-6 1E-8 1E-4 1E-3

Page Last Reviewed/Updated Wednesday, March 24, 2021

Page Last Reviewed/Updated Wednesday, March 24, 2021