CHP Radioactive Materials Handling & Waste Management Flashcards
6 cards from real CHP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CHP Radioactive Materials Handling & Waste Management flashcards as text
Which NRC license type grants a large institution broad authorization to use a wide range of radioactive materials with minimal individual license amendments?
Answer: Type A broad scope specific license
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.
When handling unsealed radioactive materials, which personal protective measure is most critical for preventing internal contamination?
Answer: Gloves and appropriate respiratory protection
Gloves prevent skin contamination and absorption, while respiratory protection prevents inhalation — the primary routes for internal contamination with unsealed sources.
What is the most appropriate shielding material for high-energy gamma rays emitted by radionuclides such as Co-60?
Answer: Lead or dense concrete
Lead's high density and atomic number make it highly effective for attenuating gamma rays through photoelectric absorption, Compton scattering, and pair production.
The 'two-person rule' (no lone zone) in nuclear security most commonly applies to which type of radioactive material operation?
Answer: Operations involving significant quantities of special nuclear material (SNM)
The two-person rule ensures no single individual has unsupervised access to significant quantities of special nuclear materials, providing a security and safety check.
What is the primary purpose of a Radiation Use Authorization (RUA) at a research institution licensed under a broad scope license?
Answer: To document approved procedures, authorized users, quantities, and locations for safe use
RUAs document approved procedures, authorized users, quantities, and use locations, providing the institutional framework for managing diverse radioactive material use under a broad license.
When using high-energy beta emitters like P-32, why is low-density plastic (acrylic/Lucite) preferred over lead for shielding?
Answer: Lead produces bremsstrahlung X-rays that increase total dose, while plastic minimizes secondary radiation
High-Z materials like lead increase bremsstrahlung production from high-energy beta particles, so low-Z plastics are preferred to minimize secondary X-ray generation.