Question

A radiation worker is subject to a dose of 177 mrad/h of 8.4 quality factor neutrons for one 40 h work week. How many times the yearly allowable effective dose did she receive? The allowable yearly effective dose for a radiation worker is 5.00 rem.

Answer 1

The allowable yearly effective radiation dose of a worker is 11.89 rad/yr

Given:

Rate of radiation dose a worker is subjected to, r = 177 mrad/h = 0.177 rad/h

time taken, t = 40 h

quality factor, Q = 8.4

allowable yearly effective effective dose = 5.00 rem

Solution:

Effective radiation dose can be calculated as a product of radiation rate, quality factor and time taken.

Now, calculating effective dose of radiation,
`r_(eff)` as:

`r_(eff) = Q* r* t`

`r_(eff) = 8.4* 0.177* 40`

`r_(eff)` = 59.47 rad/h

Now, for allowable yearly effective dose of radiation, R:

R =
`(r_(eff))/(5)`

R =
`(59.47)/(5) = 11.89 rad/yr`