United States Nuclear Regulatory Commission - Protecting People and the Environment

Cerium-144

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)
58 Cerium-144 W, see 134Ce 2E+2
LLI wall
3E+1 1E-8 4E-11 - -
(3E+2) - - - 3E-6 3E-5
Y, see 134Ce - 1E+1 6E-9 2E-11 - -
Page Last Reviewed/Updated Thursday, July 25, 2013