Derived Air Concentration-Hour

{
  "id": "MLC-T-NUC-000120",
  "term": "Derived Air Concentration-Hour",
  "field": "Nuclear energy and radiation",
  "definition": "The product of the concentration of radioactive material in air (expressed as a fraction or multiple of the derived air concentration for each radionuclide) and the time of exposure to that radionuclide, in hours. A licensee may take 2,000 DAC-hours to represent one annual limit on intake (ALI), equivalent to a committed effective dose equivalent of 5 rems (0.05 Sv).",
  "abbreviation": "DAC-hour",
  "references": [
    "NRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/nuclear/derived-air-concentration-hour/"
}