One DAC-Hour is equal to how many millirem of CEDE?

One DAC-Hour is equal to how many millirem of CEDE?

• A. 2.5 mrem CEDE
• B. 25 mrem CEDE
• C. 0.25 mrem CEDE
• D. 5 mrem CEDE

Answer: (A)

In radiation protection, a DAC-hour is a standard way to estimate dose from airborne radioactive material. It is the product of the Derived Air Concentration (DAC) and the exposure time, and it directly translates into a CEDE (Committed Effective Dose). The accepted conversion is that one DAC-hour equals 2.5 mrem CEDE to the whole body. So, if you’re exposed at 1 DAC for one hour, the dose is 2.5 mrem CEDE; for more hours, multiply accordingly (e.g., 4 hours would be 10 mrem CEDE). For reference, 2.5 mrem CEDE is 0.025 mSv. The other numbers don’t match this standard DAC-hour conversion.

In radiation protection, a DAC-hour is a standard way to estimate dose from airborne radioactive material. It is the product of the Derived Air Concentration (DAC) and the exposure time, and it directly translates into a CEDE (Committed Effective Dose). The accepted conversion is that one DAC-hour equals 2.5 mrem CEDE to the whole body. So, if you’re exposed at 1 DAC for one hour, the dose is 2.5 mrem CEDE; for more hours, multiply accordingly (e.g., 4 hours would be 10 mrem CEDE). For reference, 2.5 mrem CEDE is 0.025 mSv. The other numbers don’t match this standard DAC-hour conversion.