Derived air concentration

Derived air concentration (DAC) means the concentration of a given radionuclide in air which, if breathed by the reference man for a working year of 2,000 hours under conditions of light work (inhalation rate 1.2 cubic meters of air per hour), results in an intake of one ALI. DAC values are given in table 1, column 3, of appendix B to 20.1001-20.2401.

Source

10 CFR § 20.1003


Scoping language

As used in this part:

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