NRRPT Radioactive Material Control 2

Question 1

Under 10 CFR Part 20, what is the maximum permissible surface contamination level (removable) for beta-gamma emitters on unrestricted area surfaces?

Accepted Answer

200 dpm/100 cm²

Answer

NRC limits removable beta-gamma contamination to 200 dpm/100 cm² on surfaces in unrestricted areas.

Question 2

Which document must accompany a shipment of radioactive material when transported by highway in the US?

Accepted Answer

Shipping papers (Hazmat manifest)

Answer

DOT regulations (49 CFR) require shipping papers describing the radioactive material to accompany all hazmat highway shipments.

Question 3

A 'fixed contamination' reading differs from a 'removable contamination' reading in that fixed contamination is:

Accepted Answer

The activity that cannot be transferred by wiping

Answer

Fixed contamination is the activity bound to a surface that does not transfer to a standard smear wipe, unlike removable contamination.

Question 4

What is the primary purpose of a Radioactive Material (RAM) inventory?

Accepted Answer

To verify accountability and detect losses or theft of licensed material

Answer

RAM inventories ensure all licensed material is accounted for and enable prompt detection of unauthorized removal or loss.

Question 5

When a radioactive spill occurs in a laboratory, what is the FIRST action a worker should take?

Accepted Answer

Evacuate and post the area to prevent others from entering

Answer

Immediately evacuating and posting the area prevents additional personnel from becoming contaminated before trained responders arrive.

(NRRPT) National Registry of Radiation Protection Technicians Practice Test