NRRPT Radiation Shielding and ALARA Principles 2

Question 1

Which NRC regulation establishes the annual occupational dose limit for the whole body?

Accepted Answer

10 CFR Part 20

Answer

10 CFR Part 20 sets the NRC's standards for radiation protection, including the 5 rem/year occupational whole-body dose limit.

Question 2

What is the annual occupational effective dose limit (deep dose equivalent) set by the NRC?

Accepted Answer

5 rem

Answer

10 CFR 20.1201 sets the annual occupational total effective dose equivalent limit at 5 rem (0.05 Sv).

Question 3

Under ALARA, engineered controls are preferred over which type of control?

Accepted Answer

Both A and B

Answer

The hierarchy of controls places engineering controls above both administrative controls and PPE in the ALARA framework.

Question 4

What is the primary purpose of a radiation work permit (RWP)?

Accepted Answer

To authorize and control radiological work activities

Answer

An RWP formally authorizes specific work in radiological areas and communicates hazards, dose limits, and required controls to workers.

Question 5

Which action is an example of applying ALARA through the 'time' component?

Accepted Answer

Rotating personnel to limit individual dose

Answer

Rotating personnel limits the time any individual spends in a radiation field, reducing their cumulative dose.

(NRRPT) National Registry of Radiation Protection Technicians Practice Test