NRRPT Radiological Control & Safety Procedures 5

Question 1

What is the correct procedure when a personnel dosimeter (TLD or film badge) is lost or damaged?

Accepted Answer

Reconstruct the dose using available survey records, air sample data, and co-worker dosimetry

Answer

When a dosimeter is lost or damaged, dose must be reconstructed using the best available information such as area surveys, air sampling data, bioassay results, and co-worker doses.

Question 2

Under the NRC's 10 CFR 20 access control requirements, who must be informed of their dose and dose limits?

Accepted Answer

All radiation workers at the start of their employment or upon entering a restricted area

Answer

10 CFR 20.1902 requires that licensees inform workers of dose limits and make their dose records available prior to starting work in a restricted area.

Question 3

Which of the following best describes the inverse square law as applied to radiation protection?

Accepted Answer

Radiation intensity decreases with the square of the distance from the source

Answer

The inverse square law states that radiation intensity varies inversely with the square of the distance from a point source—doubling distance reduces intensity to one-quarter.

Question 4

A radiological contingency plan should include which of the following elements?

Accepted Answer

Identification of credible accidents, estimated consequences, and pre-planned response actions

Answer

A radiological contingency plan must identify credible accident scenarios, estimate consequences, and specify pre-planned response actions to protect workers and the public.

Question 5

What is the recommended surveying technique to locate the edge of a contamination boundary accurately?

Accepted Answer

Move the detector slowly (2-3 cm/sec) in overlapping parallel paths at a consistent height

Answer

Slow, overlapping systematic survey passes ensure thorough coverage and allow the instrument's response time to register localized contamination without missing spots.

(NRRPT) National Registry of Radiation Protection Technicians Practice Test

(NRRPT) National Registry of Radiation Protection Technicians Practice Test

NRRPT Radiological Control & Safety Procedures 5