NRRPT Radioactive Material Control 3

Question 1

Under DOT regulations, a Type A quantity of radioactive material is defined as:

Accepted Answer

A quantity not exceeding the A1 or A2 value for the radionuclide

Answer

Type A quantities are at or below the A1 (special form) or A2 (normal form) values, which represent the maximum allowed in a Type A package.

Question 2

What does the term 'source check' mean in the context of portable radiation survey instrument quality control?

Accepted Answer

Verifying instrument response using a known reference source

Answer

A source check confirms that a survey instrument gives a consistent, expected response to a reference source, indicating the instrument is functioning properly.

Question 3

Which action is required when radioactive material is found missing during a routine inventory?

Accepted Answer

Immediately notify the NRC Operations Center if the missing quantity meets reporting thresholds

Answer

10 CFR 30.50 and 10 CFR 20.2201 require immediate notification to the NRC Operations Center when theft or loss of reportable quantities of licensed material is discovered.

Question 4

A 'hot particle' is particularly hazardous because it:

Accepted Answer

Delivers a highly localized dose to a small area of skin or tissue

Answer

Hot particles deliver an extremely high local dose rate to a microscopic area of skin or tissue, potentially exceeding skin dose limits even when whole-body dose is low.

Question 5

Which engineering control most effectively reduces airborne radioactive contamination during decommissioning activities?

Accepted Answer

Using local exhaust ventilation with HEPA filtration at the point of generation

Answer

Local exhaust ventilation captures contaminants at their source before they disperse, and HEPA filters prevent release into general ventilation.

(NRRPT) National Registry of Radiation Protection Technicians Practice Test

(NRRPT) National Registry of Radiation Protection Technicians Practice Test

NRRPT Radioactive Material Control 3