Question

The radiation meter is showing radiation 2x as much as background. Is this a hot zone? If so why or why not?

Answer 1

Answer:

This is not a clear indication of the hot zone as the information of the radioactivity of the background is not provided clearly.

Explanation:

According to IAEA as well as NRCP, the hot area is defined on the basis of the radioactivity reading it shows instead of contrast or comparative reading from the background. The value of radiation activity which will be required to declare an area as hot zone is if it is greater than 0.1 mSv/h or $1.5091\times 10^{29} kg^{-1} s^{-1}$.