NDT Radiographic Testing Safety 3

Question 1

A film badge (OSL dosimeter) is worn during radiographic testing primarily to:

Accepted Answer

Measure and record cumulative radiation exposure

Answer

Film badges and OSL dosimeters are passive, legal-record dosimeters that accumulate and record total dose for regulatory compliance.

Question 2

What color is typically used on radiographic exclusion zone barrier ropes or tape to signal a radiation hazard?

Accepted Answer

Yellow and magenta (or purple)

Answer

Yellow and magenta (or purple) are the internationally recognized colors for radiation warning signs and barriers per ANSI/ISO standards.

Question 3

When transporting an Ir-192 camera, which DOT packaging category is most commonly required for a fully loaded industrial radiography camera?

Accepted Answer

Type B Package

Answer

The radioactivity levels in a loaded Ir-192 camera typically exceed Type A limits, requiring a DOT-certified Type B package for transport.

Question 4

A pocket dosimeter reads zero at the start of a shift but reads 2 mSv at the end, while the film badge shows only 0.1 mSv. The radiographer should:

Accepted Answer

Report both readings and investigate the discrepancy

Answer

Discrepancies between dosimeters must be investigated and reported to the RSO, as they may indicate dosimeter malfunction or an unreported exposure.

Question 5

A 'restricted area' in radiographic testing is defined as an area where dose could exceed:

Accepted Answer

0.05 mSv (5 mrem) in any one hour

Answer

Per 10 CFR Part 20, a restricted area is any area where an individual could receive a dose in excess of 0.05 mSv (5 mrem) in any one hour.

NDT - Non-Destructive Testing Practice Test