NRRPT Radiological Protection Standards 3

Question 1

The annual occupational dose limit for the skin and extremities under 10 CFR Part 20 is:

Accepted Answer

50 rem (500 mSv)

Answer

10 CFR 20.1201 sets the annual occupational dose limit for the skin of the whole body and the extremities at 50 rem (500 mSv).

Question 2

A radiation worker receives an unplanned dose of 10 rem in one year. Under 10 CFR 20.1201, this would be:

Accepted Answer

A violation of the 5 rem TEDE annual limit

Answer

The annual occupational TEDE limit under 10 CFR 20.1201 is 5 rem; receiving 10 rem unplanned constitutes a violation.

Question 3

Which radiation weighting factor (wR) is assigned to alpha particles under ICRP 103?

Accepted Answer

20

Answer

ICRP Publication 103 assigns a radiation weighting factor of 20 to alpha particles due to their high linear energy transfer (LET).

Question 4

The 'negligible individual dose' (NID) defined by NCRP Report No. 116 is:

Accepted Answer

0.01 mSv/year

Answer

NCRP Report No. 116 defines the negligible individual dose as 0.01 mSv/year (1 mrem/year), below which individual protective actions are not warranted.

Question 5

Under 10 CFR Part 20, a 'declared pregnant worker' receives a dose limit of:

Accepted Answer

0.5 rem for the entire gestation

Answer

10 CFR 20.1208 limits the dose to the embryo/fetus of a declared pregnant worker to 0.5 rem (5 mSv) during the entire gestation period.

(NRRPT) National Registry of Radiation Protection Technicians Practice Test

(NRRPT) National Registry of Radiation Protection Technicians Practice Test

NRRPT Radiological Protection Standards 3