Reference, Questions and Help => Nuke Q&A => Definitions => Topic started by: Rennhack on Nov 23, 2005, 03:31
Title: Derived air concentration (DAC)
Post by: Rennhack on Nov 23, 2005, 03:31
The concentration of radioactive material in air and the time of exposure to that radionuclide in hours. An NRC licensee may take 2000 hours to represent one ALI, equivalent to a committed effective dose equivalent of 5 rems (0.05 sievert).