United States Nuclear Regulatory Commission - Protecting People and the Environment

Technetium-99

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)
43 Technetium-99 D, see 93mTc 4E+3 5E+3
St. wall
2E-6 - 6E-5 6E-4
- (6E+3) - 8E-9 - -
W, see 93mTc - 7E+2 3E-7 9E-10 - -
Page Last Reviewed/Updated Thursday, July 25, 2013