Chapter 31, Problem 55GP

To determine

Number of rem received by a person per year on average.

Answer to Problem 55GP

  $5.1\times {10}^{-2}\text{rem/yr}$

Explanation of Solution

Given info:

Radiation received from X-rays and gamma rays is $21\text{ mrad/yr}=21\times {10}^{-3}\text{rad/yr}$

Radiation received from particles having QF of 10 is:

  $\begin{array}{l}=\text{3}\text{.0 mrad/yr}\\ =3.0\times {10}^{-3}\times \text{10rad/yr}\\ =30\times {10}^{-3}\text{rad/yr}\end{array}$

Calculation:

Total rem received by a person can be given as:

  $\begin{array}{l}=\left(30\times {10}^{-3}\text{rem/yr}\right)+\left(21\times {10}^{-3}\text{rem/yr}\right)\\ =51\times {10}^{-3}\text{rem/yr}\\ =5.1\times {10}^{-2}\text{rem/yr}\end{array}$

Conclusion:

Thus, the rem received by a person is $5.1\times {10}^{-2}\text{rem/yr}$