CHP CHP Radioactive Materials Handling & Waste Management

Question 1

Which NRC license type grants a large institution broad authorization to use a wide range of radioactive materials with minimal individual license amendments?

Accepted Answer

Type A broad scope specific license

Answer

A Type A broad scope specific license grants large research institutions authorization to use a wide range of radionuclides without amending the license for each new isotope.

Question 2

When handling unsealed radioactive materials, which personal protective measure is most critical for preventing internal contamination?

Accepted Answer

Gloves and appropriate respiratory protection

Answer

Gloves prevent skin contamination and absorption, while respiratory protection prevents inhalation — the primary routes for internal contamination with unsealed sources.

Question 3

What is the most appropriate shielding material for high-energy gamma rays emitted by radionuclides such as Co-60?

Accepted Answer

Lead or dense concrete

Answer

Lead's high density and atomic number make it highly effective for attenuating gamma rays through photoelectric absorption, Compton scattering, and pair production.

Question 4

The 'two-person rule' (no lone zone) in nuclear security most commonly applies to which type of radioactive material operation?

Accepted Answer

Operations involving significant quantities of special nuclear material (SNM)

Answer

The two-person rule ensures no single individual has unsupervised access to significant quantities of special nuclear materials, providing a security and safety check.

Question 5

What is the primary purpose of a Radiation Use Authorization (RUA) at a research institution licensed under a broad scope license?

Accepted Answer

To document approved procedures, authorized users, quantities, and locations for safe use

Answer

RUAs document approved procedures, authorized users, quantities, and use locations, providing the institutional framework for managing diverse radioactive material use under a broad license.

(CHP) Certified Health Physicist Practice Test

(CHP) Certified Health Physicist Practice Test

CHP CHP Radioactive Materials Handling & Waste Management